95results about How to "Improve coagulation efficiency" patented technology

The present invention provides a return sludge settler changed by an inclined tube settler, characterized in that the upper reation region is set with a mixing region and a promoting flocculation zone, a blender is set in the mixing region, a promoting mixer and an attachable stainless steel cylinder are set in the promoting flocculation zone, a baffle system is set between a filtering zone and a inclined tube water outlet, a mud zone sets a plug concentrating mud scraper, the mud pipe is connected with a mud runback to water inlet, the mud runback is set with a mud reflux pump, the mud runback is connected with exterior, and a medical feeding point is set in the water inlet and the main settler. The advantages of the invention is that giving full play impact to index such as biological degradation organic matter, nitrogen and phosphorus etc nu changing traditional inclined tube settler, enhancing coagulation efficiency by high effect mixing and mud return, thus the effluent effect is improved, and the solid ratio of the drainable sludge is enhanced, meeting the direct dehydration condition.

The invention discloses a high speed steel finishing roll of a wire bar mill and a manufacturing method of the high speed steel finishing roll, belonging to the technical field of machining and casting. The finishing roll consists of a roll neck and a roll body comprising a working layer, a primary core and a core part; the working layer comprises the following chemical components: 1.50-2.50 percent of C, 0.40-1.00 percent of Si, 0.40-0.80 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, 4.0-8.0 percent of Cr, 0.50-1.00 percent of Ni, 5.00-8.00 percent of Mo and 5.00-8.00 percent of V. In the casting process, the casting temperature and the rotating speed of a centrifuge can be controlled by adopting manners of high-temperature discharge from a furnace, low-temperature casting, high-speed mold filling and slow-down solidification. According to the high speed steel finishing roll and the manufacturing method of the high speed steel finishing roll, the adaptability of high speed steel materials on bar rolling can be effectively solved by reasonable design of alloy components and the processing technology, and the wear resistance and the millimeter rolling quantity of the roll are improved; in addition, the high speed steel finishing roll has favorable thermal crack resistance, and the working efficiency of a heavy and medium plate mill can be greatly improved.

The invention discloses an inorganic polymer coagulant for water treatment and a preparation method thereof. The inorganic macromolecule coagulant is polymerized zirconium tetrachloride, which uses zirconium tetrachloride and concentrated lye as raw materials, and slowly adds the concentrated lye to the zirconium tetrachloride solution to obtain different suitable alkalization degrees, concentrated alkali The dropwise addition process is controlled to be completed within 3 hours, and then the stirring is continued for 3-5 hours until the solution becomes a colorless and transparent liquid. The inorganic polymer coagulant provided by the invention has the advantages of good product stability, strong adsorption and bridging ability to colloidal substances, good coagulation effect, wide application range, etc., and can be widely used in water supply, wastewater treatment, papermaking, textile printing and dyeing , Daily chemicals and other fields, and has a good water treatment effect. The method of the invention has the characteristics of simple and convenient process, economy, speed and the like.

The invention relates to the field of wood processing equipment, in particular to veneer sticking equipment for wood processing. The equipment comprises a device main body, a conveyor belt is movablyarranged at the lower end of the interior of the device main body, a touch rotating wheel is movably arranged on the left side of the interior of the device main body, a fit plate is movably installedon the outer side of the touch rotating wheel, a gluing rotating wheel is movably arranged on the outer side inside the touch rotating wheel, and a scraping plate is movably installed on the outer side of the gluing rotating wheel. A veneer roll is movably arranged at the upper end of the interior of the device main body, and the touch rotating wheel is arranged under the veneer roll, when wood enters the device main body under the drive of a baffle on the conveyor belt, acting force can be exerted on the touch rotating wheel to drive the touch rotating wheel to move upwards to make contact with the lower end of the veneer roll, and when the wood continues to move, the veneer roll can be driven to rotate clockwise by driving the touch rotating wheel to rotate, so that veneer on the outerside of the veneer roll can move downwards to make contact with the outer side of the wood. Automatic veneer sticking is achieved, and meanwhile energy consumption is saved.

A process for removing the algae from the raw water of water works by ultrasonic waves includes adding coagulant to said raw water, coagulating reaction while applying ultrasonic waves via ultrasonic transducer, filtering and disinfecting.

The invention discloses the electrotome handle, lighting electrotome handle, vacuum suction tube, vacuum pump of an attraction electrotome. In the hollow electrotome handle, a power circuit of the electrotome is arranged in the electrotome handle or the wall of the electrotome handle; an attraction opening is formed the tail of the electrotome handle; a conducting blank pipe is provided with a hollow channel, and the rear end of the conducting blank pipe is arranged in the front of the electrotome handle; and the rear end of the conducting blank pipe is connected with the power circuit of the electrotome, and the front end of the conducting blank pipe extrudes out of the electrotome handle and forms a thin tip suction inlet forward. The electrotome provided by the invention absorbs smoke generated in the process of operation uninterruptedly, and during the operation on a narrow and deep area, the electrotome can penetrate into the area to absorb the generated smoke, liquid impurities and the like close to the electrotome completely in time and discharge the smoke, the liquid impurities and the like to the outside or a sterilizer without blocking the negative pressure suction pipe and the negative pressure pump; and in an operation area of a narrow dark area, an illuminating lamp on the electrotome can also illuminate conveniently and clearly. In addition, an electrotome head, the electrotome handle and the negative pressure pump can be disassembled conveniently and quickly to be replaced and disinfected, and a filter screen and a filter can be replaced conveniently.

The invention relates to a method for disposing water containing massive algae on the basis of calcium-peroxide-enhanced coagulation. The method includes the steps of adding calcium peroxide into thewater containing the massive algae and adding an iron salt coagulant, wherein calcium peroxide and the coagulant can catalyze the generation of free radicals used for oxidizing and inactivating algaecells. Compared with the prior art, the method is based on a Fenton-like technology of calcium peroxide, enhanced coagulation and sedimentation for disposing the water containing the massive algae areachieved, the use dosage of the coagulant can be reduced, synchronous and efficient removal of the algae and organic matter is achieved, and the algae are inactivated without causing cell disruptionand releasing intracellular organic matter. The method is an environmentally friendly pollution-free technology with a great prospect.

The invention discloses a polyimide superfine fiber and a preparation method thereof. The method includes the steps of adding solvent to dissolve diamine under protection of nitrogen, adding dianhydride to make the solid content of the solution be 9-20%, conducting reaction for 3-12 hours at a temperature of 0-50 DEG C to obtain a polyimide spinning solution, conducting spinning through the polyimide spinning solution according to a wet method or dry method spinning process, and conducting imidization on polyamide acid protofilament through the thermal amidation or chemical imidization process. The minimum monofilament density of the prepared polyimide superfine fiber can reach 0.153 dtex, the raw materials are wide in source and low in cost, the spinning process is stable, and industrial production can be achieved.

The invention relates to injectable and degradable dry hemostatic cryogel with good shape memory and blood coagulation capability as well as a preparation method and an application of the injectable and degradable dry hemostatic cryogel. Chitosan is resuspended in deionized water, glacial acetic acid is dropwise added under stirring, and a CS solution is obtained after uniform mixing; dopamine hydrochloride is added to the deionized water to prepare a DA solution; the CS solution is mixed with the DA solution, an oxidant solution is added simultaneously, and the solutions are uniformly mixed to obtain a mixed solution; and finally, the mixed solution is placed at the temperature of subzero 7-subzero 20 DEG C to react for 12-36 h, a cross-linked cryogel network in a frozen state is obtained, and is placed in the deionized water to be melted, freeze drying is conducted, and the injectable and degradable dry hemostatic cryogel with good shape memory and blood coagulation capability is obtained. The cryogel dressing has high elasticity and ultrafast shape recovery capability, can quickly absorb blood, and has photo-thermal antibacterial performance and the like.

The invention discloses an environment-friendly dedusting system for construction sites. The environment-friendly dedusting system comprises a power source system, an air quality monitoring system, acontrol system and a sprayer system, wherein the power source system is controlled by a controller I; the air quality monitoring system is controlled by a controller II; the sprayer system is controlled by a controller III; the control system comprises a main controller, the controller I, the controller II and the controller III; the on and off of the electric connection of the systems is controlled by the signal transmission between the main controller and the controller I, the controller II as well as the controller III. The environment-friendly dedusting system has the beneficial effects that in the dedusting process, the air quality is monitored in real time, and the dust concentration at the construction site is detected by the air quality monitoring system; the amount of labor is reduced, the labor intensity is decreased, the dedusting effect is good, the working efficiency is high, the water resource is saved, and the environment quality at the construction site is improved.

The invention discloses a landscape water body emergency treatment method based on a magnetic loading coagulation technology. The landscape water body emergency treatment method comprises the following steps: (1) guiding the landscape water body to be treated into a reaction tank, orderly feeding magnetic powder and polyaluminum chloride to the reaction tank, and stirring for 30-90 seconds under the condition of a stirring speed of (80-200)r / min; (2) adding polyacrylamide and stirring for 4-10 minutes under the condition of a stirring speed of (40-80)r / min; stopping stirring, and after static settling for 25-60 minutes, discharging clear water, discharging sludge from the reaction tank and recovering the magnetic powder. The landscape water body emergency treatment method based on the magnetic loading coagulation technology is simple to operate, low in dosage of a coagulant, high in coagulation efficiency, short in floc static settling time and good in water yielding effect. The precipitation of suspended solid substances is accelerated by virtue of magnetic loading, and therefore, pollutants in the water can be effectively removed; the recovered magnetic powder can be recycled and can be applied to improvement of the water quality of the landscape water body, particularly emergency treatment.

The invention provides a modification method for saving the operation cost of a water treatment plant supplied with water from a low turbidity water source. The modification method comprises the following steps: investigating the change situations of water quality and water amount of water in the water source of a water treatment plate in different seasons, evaluating the conventional technological processing effect and operation cost of the water treatment plant; if the water in the water source of the water treatment plate meets the conditions of low turbidity and low pollution, reconstructing and enhancing each technical step, optimizing the operation parameters; after reconstruction, and evaluating the quality of processed water and cost so as to achieve the goal of reducing operation cost. Through evaluating the comprehensive operation cost and determining the optimal operation parameters by using an optimization processing unit, the water quality of water source of a water treatment plant, processing effect of each technical unit, the water quality indexes of processed water, and safety are all combined with the overall economic cost of the water treatment plant; moreover, the wastewater generated during the production process is returned together to enhance the coagulation efficiency of low turbidity water, the water resource is also saved, the sewage discharge is reduced, and the method is very important for the upgrading and reconstruction of the water treatment plant.

The invention relates to a compound flocculant with polymerization ferric chloride and amination polymers based on papermaking sludge and a method for preparing the compound flocculant. The method includes synthesizing amination polymers from the papermaking sludge generated in the papermaking industry; compounding the amination polymers and the inorganic flocculant polymerization ferric chloride to prepare the compound flocculant with the polymerization ferric chloride and the amination polymers based on the papermaking sludge. The compound flocculant and the method have the advantages that the color removal rate of disperse yellow water samples can reach 95% at least when the compound flocculant is used for treating the simulated dye water samples and the dosing quantity of the compound flocculant is 5 mg / L, excellent flocculation effects can be realized by the compound flocculant for water samples under different acidity and alkalinity conditions and other diversified water samples, the capital construction cost of reaction tanks and sedimentation tanks can be reduced, and the compound flocculant is high in electricity performance and flocculation efficiency, good in dissolving property, long in storage cycle and applicable to the field of water supply, wastewater treatment and the like and suitable for actual application to water treatment.

The invention discloses a biodegradable cryogel dressing as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. Amino compounds are selected as main components, and the selected amino compounds have good biocompatibility and can be degraded in organisms. Therefore, the amidation reaction of amino and carboxyl in the amino compound is catalyzed by EDC hydrochloride and NHS to form a basic network structure of the cryogel. The cryogel dressing is holes communicating with each other in a free state, compared with the cryogel dressing in a shape free state, the cryogel dressing in a shape fixed state is a collapsed and closed hole, but a cryogel dressing sample still keeps an undamaged network structure. The preparation method disclosed by the invention is simple and low in cost, the biodegradable cryogel dressing is easy to carry and biodegradable, and the prepared cryogel dressing can be used for quickly stopping bleeding andhas huge potential in serving as a novel hemostatic for promoting wound healing.

The invention provides a high-efficiency airport fog eliminating system and a fog eliminating method thereof. The high-efficiency airport fog eliminating system comprises a standing wave field synthesis system, a moisture absorbent applying system and a carrying platform; the standing wave field synthesis system comprises a phase synchronization unit and a plurality of strong sound production units which are symmetrically arranged on the two sides of a runway based on the central axis of the runway. A fog dispersal operation space is formed between the strong sound production units which are oppositely arranged based on the central axis of the runway; the phase synchronization unit is electrically connected with the strong sound production units, and the phase synchronization unit realizessynchronous control of the plurality of strong sound production units; the moisture absorbent applying system is arranged on the strong sound production units, the strong sound production units are arranged on the carrying platform, and the carrying platform drives the strong sound production units to reciprocate in the extending direction of the runway. In addition, the invention also provides afog eliminating method. According to the system, the two strong sound production units reciprocate along the axis of the runway, and the moisture absorbent is applied to the fog eliminating operationspace, so that fog in the fog eliminating operation space is eliminated, and the system has the advantages of not influencing traffic operation and the like.

The present invention relates to a lid mold structure with a grill and a diversion control device. The lid mold structure is characterized in that: a fixed mold frame is provided internally with a fixed mold core; a movable mold frame is provided internally with a movable mold core; the movable mold core is connected to a shunt sub; the fixed mold core is provided with a sprue bush; the center of the fixed core is provided with a molding recess; the molding recess is provided with a circular radiator grill; one side of the circular radiator grill is provided with two diversion control modules; the other side of the circular radiator grill is provided with a condensation control cavity; the center of the movable mold core is provided with an oval shaping boss; the center of the oval shaping boss is provided with a molding grill; one side of the molding grill is provided with a semicircular boss, and one side of the boss is connected to a guide column group; and shaping boss is equipped with a deceleration bump group. Dross outside the shaping boss and the circular radiator grill in the fixed mold core realize the more efficient and smooth gas exhaust, rapidly reduce local problems, improve the efficiency of coagulation, reduce the pores of the product, and improve the mold quality.

The invention discloses movable type combined transporting and loading equipment for building thermal-insulation frame material processing. The movable type combined transporting and loading equipmentcomprises a supporting and carrying cabinet, a transporting base, an inner table, an inner bracket, a glue coating table and a rear sleeve frame, wherein the transporting base is arranged on the upper end surface of the supporting and carrying cabinet; one side of the top of the supporting and carrying cabinet is equipped with the inner table; and one side of the inner table is equipped with theinner bracket. The movable type combined transporting and loading equipment has the beneficial effects that: glue coating nozzles on the bottom of a glue barrel drop and coat mucilage glue into glue holes; while mucilage glue is dropped, a motor II drives the glue barrel in a rail slot I to move back and forth, and a motor III drives the glue barrel to move back and forth, so that on one hand, connection between upper and lower layers of frames on a thermal insulation frame material is guaranteed to be firmer, on the other hand, the glue coating nozzles are matched to synchronously and separately coat glue for glue holes in different positions on the thermal insulation frame material, and therefore, the equipment improves glue coating efficiency of the thermal insulation frame material. The equipment is high in automation degree of work, is firm and durable, has good social benefits, and is suitable for being popularized and used.

The invention discloses coagulation treatment equipment. The coagulation treatment equipment comprises a stirring barrel, wherein a feeding opening is fixedly connected to the side wall of the stirring barrel; a driving motor is fixedly installed on the stirring barrel; a rotating shaft is fixedly installed at the output end of the driving motor; a stirring rod is fixedly connected to the bottom of the rotating shaft; a plurality of vibration springs are fixedly connected to the inner wall of the stirring barrel; and one end of each vibration spring is fixedly connected with an extrusion cylinder, multiple vibration cavities are formed in the inner wall of the extrusion cylinder and located at one end of the vibration spring, one end of each vibration cavity is fixedly connected with an extrusion plate, multiple transmission mechanisms are fixedly arranged at the bottom of the extrusion plate, and limiting mechanisms are fixedly arranged among the transmission mechanisms. Compared with the prior art, through rotation of the stirring rod, materials can be gradually coagulated into blocks, the surface of the extrusion cylinders can be extruded, the vibration springs on the side walls of the extrusion cylinders can be extruded, counter-acting force can be generated on the coagulated materials, and material coagulation treatment efficiency can be improved.

The invention discloses a medicine feeder for continuous sludge dehydration. The medicine feeder comprises a pipe body, an outer ring pipe, a medicine feeding pipe and a plurality of branch pipes, wherein the two ends of the pipe body in the axial direction are provided with a liquid inlet and liquid outlet respectively; the outer ring pipe is arranged on the periphery of the pipe body; one end of the medicine feeding pipe extends out of the outer ring pipe, and the other end of the medicine feeding pipe is communicated with an internal space of the outer ring pipe. The branch pipes are arranged between the outer ring pipe and the pipe body and distributed in the circumference direction of the outer ring pipe, one end of each branch pipe is communicated with the internal space of the outer ring pipe, and the other end of the branch pipe is communicated with the inside of the pipe body. The invention further discloses a secondary coagulation system for continuous sludge dehydration. The secondary coagulation system comprises a liquid inlet pipe, the medicine feeder, a mixing pipe and a coagulation barrel which are sequentially connected in the flow direction of liquid. The coagulation barrel is provided with a clear liquid outlet. The medicine feeder enables a medicine to be quickly and evenly mixed with mixed liquid, so that the medicine and the mixed liquid react fully, and thus a flocculation effect in the mixing flocculation process is improved.

The invention provides a preparation method of high polymeric polyalumnium sulfa coagulant, belonging to the water purification drug technical field; the preparation steps are as follows: Na2SO4 solid is added in AlCl3 solution according to 0.05-0.10 of mole ratio of SO42- / Al3+, the mixture is stirred and is dissolved completely; and then the mixture is rapidly mixed with Na2CO3 solution at normal temperature and normal pressure under strong mixing condition, the mole ratio of OH- / Al3+ is controlled to be 1.2-2.2, the total aluminum concentration is 0.2-0.4mol / L, so as to obtain the stable and transparent homogeneous phase polyalumnium sulfa solution; the homogeneous phase polyalumnium sulfa solution is heated at constant temperature from 95 to 105 DEG C, stirred and back-flows for 6-8h, and then cooling and aging are carried out to obtain the high polymeric polyalumnium sulfa coagulant. The high polymeric polyalumnium sulfa has high polymerization degree and strong stability and can remove turbidity and organic matters in the drinking water by strengthening coagulation, the water yielding quality is odiously improved and the invention has high application value.

The invention discloses a hemihydrate building gypsum coagulant and a preparation method and application thereof. The coagulant comprises mother liquor and powdery master batch, wherein the powdery master batch comprises soluble calcium salts; and the mother liquor is a sulfuric acid solution. The soluble calcium salts are matched with dilute sulfuric acid with a certain concentration to improve the concentration of calcium ions and sulfate ions in the fluid phase of the hemihydrate gypsum slurry so as to rapidly reach the supersaturation degree of crystallization of calcium sulfate dihydrate,finally, a large amount of primary micro calcium sulfate dihydrate crystal nuclei are formed in the solution of the hemihydrate gypsum slurry, the obtained crystal nuclei are smaller in size and strong in induced crystallization effect, so that quick hardening of the hemihydrate building gypsum is achieved; the preparation process is simple, the using method is simple and easy to operate, technical support and theoretical guidance are provided for the hemihydrate gypsum coagulant with low cost and high coagulation promoting effect, and the method has good application prospect.

The invention provides an industrial sewage treatment method, which comprises the following steps of (1) mechanical treatment; (2) softening treatment; (3) reinforced coagulation; (4) pulse discharging plasma-photocatalysis cooperated degradation of organic matters; (4) ultrasound cooperated nanometer zero-valent iron treatment; (6) iron wire cage framework cellulose aerogel adsorption; (7) ultrafiltration / nanofiltration-reverse osmosis integrated film method treatment. The industrial sewage treatment method provided by the invention has the advantages that the process is simple; the operationperiod is short; contaminants such as suspended matters, organic matters and salts contained in the industrial sewage can be thoroughly removed; a good removal effect can be achieved on various kindsof continuous organic contaminants and heavy metal; in addition, the commonality is realized on the contaminant removal; the heavy metal recovery rate is high; the economic benefits are good; the process flexibility is high; the anti-impact load capability is high; the sewage recovery rate is high; the method is applicable to the sewage treatment in various fields of electric power, photovoltaics, photoelectricity, semi-conductors, electrics, pharmacy, metallurgy, petrochemical engineering and the like.

The invention discloses injectable hemostatic cryogel for promoting tissue regeneration and a preparation method and application thereof. The preparation method comprises the following steps: ultrasonically dispersing polydopamine, chitosan and collagen in deionized water, adding glacial acetic acid, and stirring until dissolving; and dissolving oxidized dextran in deionized water, adding an oxidized dextran solution into a mixed solution under vigorous stirring, transferring to a refrigerator for a reaction, and melting at room temperature to obtain the injectable hemostatic cryogel for promoting tissue regeneration. The aperture of the cryogel is 50-200 [mu] m, and the cryogel is provided with interconnected macroporous structures and stable mechanical strength, can be conveyed to a narrow and deep wound through an injector after being compressed and fixed, quickly recovers to block the wound and form a physical barrier after sucking blood, and activates a blood coagulation process through concentrated blood to achieve a hemostasis effect. The cryogel prepared by the invention has rapid shape recovery capability, injectability, good hemostatic capability and the like.

The invention discloses a friable rock stratum sample-collection drill pipe structure, particularly discloses a drill pipe structure; according to the drill pipe structure, multiple layers of structures are combined to form a circular hollow zone, external refrigerants keep the hollow zone at a low temperature, so that the outer sides of samples are solidified to form protective shells, and soil sample in the core portion is separated and collected through a sampling tube. The outer edges of the samples cannot be squeezed due to the fact that cooling is performed after sampling. The drill pipestructure is characterized in that an inner support ring is arranged on the inner wall of one end of an outer drill bushing, the inner diameter of the inner support ring is reduced gradually from bottom to top, multiple groups of drill pipe edges are arranged on the outer wall of the outer drill bushing at equal intervals, drill pipe edges in the same group are arranged circularly, the width of the drill pipe edges is reduced gradually from one end to the other end gradually, an inner circular groove is formed in the inner side wall of the outer drill bushing, one end of the inner circular groove extends to the position of the inner support ring, a lower spacer tube is arranged in the outer drill bushing, one end of the lower spacer tube is screwed with the other end of the outer drill bushing through external threads, and a seal gasket is arranged on the end face of the other end of the lower spacer tube, and fits the inner support ring well.

The invention discloses a condensation device with an improved structure for isoprene rubber production, and relates to the technical field of equipment for isoprene rubber production. The device comprises a tank body with the periphery sealed, a first motor fixedly arranged at the top of the tank body through a motor support, a stirring rotating shaft vertically and rotatably arranged in the tank body through a bearing, fan blades arranged at the bottom of the stirring rotating shaft and a glue spraying pipe arranged at the upper end of the tank body and used for spraying glue liquid and hot water into the tank body. The device has the beneficial effects that power is increased for spraying of glue liquid through rotation of the stirring rotating shaft, resistance of water is reduced, volatilization of a solvent is facilitated, under the action of rotation of the stirring rotating shaft and stirring of the fan blades, colloidal particles are completely dispersed in hot water, a mixture in the inner cavity of the tank body can be fully stirred through rotation of the fan blades, and with the auxiliary effect of rotation of a turnover plate, the glue solution is in full contact with the solvent.

In a paper / film composite structure, the film is made of a low substituted cellulose ether having a molar degree of substitution with alkyl and / or hydroxyalkyl groups in the range of 0.05 to 1.3. The paper / film composite structure can be delivered to the waste paper recycling process without previously removing the film portion. The strength of film is increased without adding to the manufacturing cost. The paper / film composite structure is inexpensive and eliminates the risk of film rupture during the working, transporting and use stages.

The invention discloses an agglomeration device for producing isoprene rubber with an improved structure, and relates to the technical field of equipment for producing isoprene rubber. The motor, the stirring shaft arranged in the tank through the vertical rotation of the bearing, the fan blade arranged at the bottom of the stirring shaft and the glue spraying pipe arranged at the upper end of the tank for spraying glue and hot water into the tank. The beneficial effects of the present invention are: the device increases the power for the spraying of the glue through the rotation of the stirring shaft, reduces the resistance of the water, and contributes to the volatilization of the solvent. The particles are completely dispersed in the hot water, and the rotation of the fan blade can also fully stir the mixture in the inner cavity of the tank. With the auxiliary function of the rotation of the turning plate, the glue can fully contact the solvent.

The invention discloses a continuous condensation method of perfluorinated ethylene propylene emulsion. According to the continuous condensation method of the perfluorinated ethylene propylene emulsion, a pipeline type emulsifying machine with the following parameters is used: the effective volume ratio alpha (effective volume in a container / volume in the container) is less than or equal to 0.6 and greater than or equal to 0.2; the dynamic coefficient K is equal to Pv / mu / n<2>, wherein Pv is the power used by each unit volume and the unit is W / m<3>, mu is the viscosity of the emulsion and the unit is Pa.s, n is the rotation speed, and the unit is rps, and K is greater than or equal to 10000; continuous condensation is carried out on the perfluorinated ethylene propylene emulsion prepared by the emulsion polymerization method. The continuous condensation method provided by the invention is simple in process, dispenses with diluting the emulsion before the condensation, so that the dosage of the ionized water is saved and the production cost can be effectively reduced; moreover, the residual powder rate is low, and the condensation effect is good.

The invention belongs to the field of thin-strip continuous casting, and relates to an edge quality control technology of thin strip steel produced through thin-strip continuous casting, in particular to a production control method for improving flanging of a thin-strip continuous casting thin strip steel coil. By controlling the H content of continuous casting molten steel and the baking time of various refractory materials before casting, the H content of the molten steel in a molten pool in the continuous casting process of thin strip steel is controlled, the heat conduction efficiency between the molten steel on the edge of the molten pool and a crystallization roller is improved, the thickness of a blank shell obtained by molten steel solidification is increased, and the influence of static pressure of the molten steel on the edge thickness of the continuous casting thin strip steel is reduced. Meanwhile, by measuring the difference value between the maximum value and the minimum value of the thickness of the thick area of the edge area of the thin strip steel, a mathematical model of the edge pressure of the crystallization roller and the difference value is established, and the control value of the edge pressure of the crystallization roller is adjusted in real time. The problem of flanging of the strip steel coil in the thin-strip continuous casting thin strip steel production process can be solved, so that the edge quality of the thin strip steel coil and the product percent of pass are improved.

The invention discloses a flocculant and a preparation method thereof. The raw material formula is composed of the following components in parts by weight: 50-80 parts of polyacrylamide; 5-8 parts of magnesium sulfate; 5-8 parts of attapulgite 8 parts; 5~8 parts of aluminum sulfate. The invention discloses a flocculant and a preparation method thereof. The flocculant has high coagulation efficiency and good effect, and is especially suitable for treating printing and dyeing wastewater. The decolorization rate exceeds 90% and the CODcr removal rate is greater than 78%.