175results about How to "Improve technical indicators" patented technology

The present invention relates to an impurity-removing purification floatation process for sulfur concentrate, belonging to the metallurgical chemical field. Its technical core is characterized by changing the traditional mode of using sulfuric acid to burn slag and separate iron into the mode of floating and purifying iron sulfide as raw material for producing sulfuric acid, using produced high-grade iron sulfide concentrate to make acid and making the slag-burned iron grade be directly reached to requirement for smelting iron and can obtain refined iron powder, so that 100% of burned slag can be utilized. Said process has two contents, one is to cyanide tail slay of gold concentrate which is one of sulfuric acid raw material and remove impurity and another is to purify sulfur concentrate. Said invention can make vitriol plant not only produce sulfuric acid, but also produce iron concentrate powder and gold.

The invention relates to an ore dressing combination process for processing a high-slime lead-zinc oxide and sulfide mixed ore. The ore dressing combination process comprises the steps as follows: crushing a raw ore and washing by a vibration sieve; carrying out primary classification on parts under the sieve and desliming fine particle fractions after primary classification through a two-stage one-closed-circuit process; combining parts over the sieve with rough particle fractions after primary classification, carrying out primary grinding, carrying out secondary classification on ground products, carrying out table-shaking gravity separation on rough particle fractions after secondary classification, and enabling fine particle fractions after secondary classification to enter a long conical cyclone for desliming; obtaining concentrate, namely lead concentrate by gravity separation, carrying out primary grinding on middlings obtained by gravity separation, combining tailings obtained by gravity separation with settled sand obtained by desliming in a short conical cyclone, carrying out ore grinding, and carrying out floatation separation to obtain lead sulfide concentrate, zinc sulfide concentrate and lead-zinc oxide bulk concentrate in sequence; and carrying out floatation separation on slime to obtain lead-zinc oxide and sulfide bulk concentrate. The ore dressing combination process is stable in operation, has very good technical indexes, and can bring very good economic benefits to enterprises.

The invention discloses a direct-drive control system of a single-needle industrial flat bed sewing machine. The system consists of a processor, an operation board, a communication circuit, a motor drive circuit, an electromagnetic valve drive circuit, a footrest detecting circuit, a position detecting circuit, a motor, an over-current protection circuit, a voltage detecting circuit, a current detecting circuit, a switch power, a rectification circuit and a footrest speed regulator; the design of a hardware circuit and software of the system is modularized; thread stop motion is relatively rapid, accurate and free of lagged thread; the overlap ratio of stitch is high, stitching is accurately numbered and sewing process is relatively stable; a human and machine operation interface is more humanized and exercisable, and Chinese characters are also displayed, thereby overcoming the disadvantages of the traditional human and machine interfaces that only English and numerical information is available.

The invention discloses a method for comprehensive utilization of iron and sulfur in tailing containing iron and sulfur, comprising the following steps: carrying out floatation on and decontaminating the iron and sulfur tailing and enriching the iron and sulfur to obtain an iron and sulfur concentrated ore; carrying out oxidizing roasting on the iron and sulfur concentrated ore to obtain calcine and flue gas; carrying out sulfuric acid pickling and decontamination on the calcine to obtain iron ore concentrate; absorbing the flue gas by an acid production device for producing sulfuric acid; carrying out reduction roasting on the iron ore concentrate to obtain metalized pellet. In the invention, the method for comprehensive utilization of iron and sulfur in tailing containing iron and sulfur can be employed for comprehensive utilization of iron and sulfur in the iron and sulfur tailing; while sulfuric acid is produced, high-purity reduced iron with a metallization rate of more than 95% and a metallic iron content of more than 90% can be obtained. The method of the invention features simple technological processes, high technical specifications, low costs and great practicability and economic benefits.

The invention discloses a method for the high-value and non-waste utilization of cyanidation slag and belongs to the technical field for the resource utilization of metallurgical slag. The method comprises: a process of separating rich sulfur and iron elements from the cyanidation slag, a process of roasting high-quality pyrite concentrate to prepare sulfuric acid and coproduce high purity iron powder, a process of extracting gold from the high purity iron powder, and a process of treating the three wastes. The method has the advantages of effective treatment of waste gas, waste water and waste slag discharged from the whole process and realizing the non-waste discharge.

The invention relates to a process for processing hematite ore containing iron carbonate. The process comprises the following steps that: ore is subjected to ore grinding to achieve monomer separation; concentrated ore obtained through magnetic separation of a weak magnetic separator, a medium magnetic separator and a strong magnetic separator are converged; the converged concentrated ore is subjected to coarse separation and fine separation sequentially by a floatation medicament with strong selective collection capacity on the iron carbonate to obtain iron carbonate concentrated ore; the obtained iron carbonate concentrated ore enters a thermal decomposition process; the decomposed ore enters a water-addition stirring tank to prepare ore pulp with appropriate concentration; the ore pulp and tailings after being subjected to floatation by the iron carbonate are mixed together for reverse floatation of the hematite; and after the reverse flotation, final concentrated ore and final tailings are obtained. The thermal decomposition process utilizes a rotary kiln to carry out thermal decomposition on the iron carbonate concentrated ore. The weight percentage of the appropriate concentration of the ore pulp is between 42 and 48 percent. The process can effectively reclaim the iron carbonate lost in the tailings, improves the grade of the final concentrated ore, provides referential significance for domestic similar ore separation and has remarkable economic and social benefits.

The invention provides a double-layer low level vacuum preloading consolidation device and a soft soil foundation consolidation method. The device consists of a main controller, a power distribution controller, a vacuum pump, a submersible pump, a buffer knockout drum, a control valve, a vacuum gauge, a vacuum degree detecting head, a hydraulic fill consolidation layer vacuum pipe network, a soft soil consolidation layer vacuum pipe network, a subsidence mark, an open water overflow port, pipes and gauge tables, wherein a cofferdam is reclaimed along the consolidation area border in the soft soil foundation, a soft soil consolidation layer is formed in the cofferdam, the soft soil consolidation layer is provided with the soft soil consolidation layer vacuum pipe network and a hydraulic fill consolidation layer, the hydraulic fill consolidation layer is provided with a bearing separation layer and the hydraulic fill consolidation layer vacuum pipe network, and the hydraulic fill consolidation layer vacuum pipe network is hydraulically filled with a sealing layer. The invention has the advantages of reasonable structure, convenient construction, short construction period, low cost, good consolidation effect, facilitation of construction in large areas, consolidation of the soft soil foundation, dredging, and reutilization of the dredged sludge after consolidation, and can solve the problem of difficult land occupation of a blow-off field and create economic benefits.

The invention relates to an online monitoring system of an optical fiber laser output power based on an integrating sphere. The system comprises a high-energy optical fiber laser output power sampler and a detecting unit, wherein the detecting unit comprises a photoelectric detector, a signal processing circuit and a data collecting and processing unit, the photoelectric detector is put into an output window of the high-energy optical fiber laser output power sampler, and a signal generated by the photoelectric detector is sent to the data collecting and processing unit after being processed by the signal processing circuit. The system is used for optical laser energy monitoring with different wavelengths by exchanging different sizes of the detectors, is capable of keeping an all-fiber compact structure of a high-energy optical fiber laser system without bearing strong laser irradiation and without the problem of laser damage threshold, is used for high-efficiency and high-energy optical fiber laser sampling and online monitoring, and is simple in structure, low in cost and easy to operate.

The invention belongs to the technical field of the mulberry seedling culturing and the orchard constructing. In spring, the sheared waste mulberry branches are used for the hard branch hotbed cottage by applying the modern agricultural technology so that the matrix components are optimized, the nutrients are diversified, the cottages can root rapidly and survive, the rooting rate / survival rate of the cottages are greatly improved, and the mulberry seedlings can be transplanted in the field to grow or construct the orchard. The method has the advantages of rapid mulberry seedling culturing and orchard constructing, low cost, high rooting rate of cottages, high survival rate of the mulberry seedlings transplanted in the field, very wide source of cottages and simple technical process and being convenient to popularize and apply.

An all-digital satellite signal simulator proposed by the invention aims to provide a simulator capable of providing a plurality of modulation modes such as UQPSK. The invention is realized by the following technical scheme: the simulator board transmits the encoded data generated in the Matlab in advance to the field programmable gate array FPGA through the PCIE bus interface of the main controlboard to the simulator board to generate 32 channels of DDS modulation data; the DSP on the simulator board receives the coding mode, the modulation mode and the coded data source sent by the main control board through the SRIO interface to select control parameters of the switch signal, and inputs the parsed control parameters respectively to the channel coding unit, the signal modulation unit and the selector in the field programmable gate array FPGA through the EMIF bus; due to the channel coding unit, the digital-to-analog converter converts the channel data into high-intermediate frequency analog signals according to different coding modes of input differential coding and convolutional coding; and the high-intermediate frequency analog signals are sent to the analog processing sectionto output a high-intermediate frequency broadband satellite analog signal with multiple modes and continuously variable code rate.

This invention relates to an integrated design method for digital models of complicated products based on files, which sets up models of commercial engineering soft and self edited software, determines the input variables to generate input files and templet files used for drive, generates data and files of the analysis results, determining the data format of the output variables and output result files, records the formats, position and the data kinds of the input variables in the templet file by an index tool of a file packaging device and finishes the record of the output variable position, format and data kinds to replace the input variables in the templet file to generate new input files, sets up models to the input files again to compute and generate new output files and carry out searches and fetch to the output variables in the output files to finish automatic integration finally.

The invention discloses a low-power high-precision time service system. The system comprises a satellite receiver, a control module and a crystal oscillator, wherein the control module is connected with the satellite receiver and the crystal oscillator, the satellite receiver is used for receiving 1PPS signals in satellite signals and sending the received 1PPS signals to the control module through a serial port, the control module determines effectiveness of the 1PPS signals, the crystal oscillator is used for outputting frequency signals to the control module, the control module comprises a digital phase-locked loop circuit and a crystal oscillator frequency reference circuit, the digital phase-locked loop circuit is used for enabling output 1PPS signals to maintain consistent with input 1PPS signals and eliminating accumulative errors generated by the crystal oscillator, and the crystal oscillator frequency reference circuit is used for eliminating jittering errors generated by the satellite receiver by performing data processing on the received 1PPS signals by taking crystal oscillator frequency signals as a reference so as to output high-precision 1PPS signals with neither the accumulative errors nor the jittering errors. According to the invention, the work efficiency is improved, and user networking is facilitated.

The present invention discloses a constant-temperature groove, which comprises a groove body (1) and is characterized in that the groove body (1) is divided into 2 cavities (2) including a left one and a right one, wherein circulation channels (3) are arranged on the upper end and the lower end between the cavities (2), a stirring oar (4) is arranged inside one of the cavities (2) and connected with an electrical machine (5). The groove body provided by the present invention is divided into 2 cavities, one of which is adopted as the working area, and the other is provided with the stirring oar inside to form a single circulation of the medium, thereby having simple structure, higher technical standard, and the temperature which is much more stable and even. As proved by the test carried out by National institute of metrology, the technical index of the present invention is superior to or meet the national standard, meanwhile the present invention adopts the stirring on the lateral of the working area, thereby preventing the stirring oar of the constant-temperature groove from being damaged by the fallen thermometer used to measure the temperature. The present invention has the advantages of a simple structure, small fluctuation of both the temperature and the maximum temperature difference, and the technical index superior to the national standard, etc.

The invention relates to a rubber asphalt mixture and a preparation method thereof. The mixture is prepared with the following components in proportion by weight: gradation stone: petroleum matrix asphalt: rubber powder modifier= 89 to 94: 4 to 6: 2 to 5, and the rubber powder modifier comprises the following component in proportion by weight: rubber power: hexanediol= 100: 3 to 7. The preparation method of the mixture comprises the following steps that: the hexanediol is doped in waste tire powder according to the proportion to be mixed and moistened to obtain the rubber powder modifier; mineral aggregates are heated to the temperature of 210 to 220 DEG C, and then rubber powder modifier and petroleum matrix asphalt are added into the mineral aggregates at the same time to be mixed for 40 to 60 seconds to obtain the mixture. The method is free from pre-mixing the rubber powder and the stone, is simple, and can realize the transformation from rubber to oil, and the petroleum-stone ratio of the mixture can be reduced to 6 to 8. All technical indexes of the directly-mixed rubber asphalt mixture are higher than the industrial standard, and the directly-mixed rubber asphalt mixture can be used for the road construction and water prevention and leakage prevention of roof and tunnels.

The invention relates to a two-on-one heavy type gas-steam combined cycle unit AGC control method. The two-on-one heavy type gas-steam combined cycle unit AGC control method comprises the steps that 1, an actual AGC load instruction is produced; 2, deviation between a produced total power signal and the actual AGC load instruction is calculated and then is transmitted to an integral operation module to perform integral operation; 3, subtraction operation is conducted on the actual AGC load instruction and actual load of a steam turbine generator unit, then the difference is divided by two, and a result is superposed in a unit total load control loop; 4, deviation between a unit front pressure control given value obtained after a steam turbine load signal is subjected to conversion of a function f (x) and a unit front pressure measurement value is calculated, then proportional-integral operation is performed, and a result serves as a steam turbine control instruction; 5, a watch keeper manually sets load offsets of two gas turbines to achieve load optimization configuration of the two gas turbines and keep total power constant. The two-on-one heavy type gas-steam combined cycle unit AGC control method enables the capacity of responding to the outside AGC load instruction of a whole unit to be effectively improved and enables the unit to flexibly adapt to various operating modes.

The invention discloses a molecular spectrum imaging device applied in clinical medicine, biology, hylology, microelectronics and other subject fields. The invention is characterized in that: light sources are connected to dispersion units through optical fibers; the dispersion units are connected to a dark field optical collector through optical fibers and used for illumination of a microscope; a signal of an image sensor CCD is connected to a computer through a cable; a control wire of the computer is connected to a dispersion unit controller which is connected to the dispersion units; the computer changes the wavelength of the light sources through control of the dispersion units, acquires image data through the image sensor CCD and finally obtains molecular spectrum data of a sample. The molecular spectrum imaging device has high technical index and quick imaging speed, does not need a push-broom component, is easy to be combined with the general microscope for use and has wide imaging spectrum range covering visible light and near infrared light, thereby being favorable for detection and analysis of biological tissues.

The invention relates to a porous electric brush, wherein through holes are formed on an electric brush body. The porous electric brush comprises the electric brush body and a lead fixedly connected with the electric brush body. The porous electric brush is characterized in that: the through holes are formed on the electric brush body and are the through holes passing through an arc bottom face of the electric brush body and the face opposite to the bottom face. The porous electric brush has the advantages of noise-reducing and temperature rise-reducing functions and high wear resistance on the premise of guaranteeing the comprehensive technical indexes of electrical property.

The invention discloses catechinic acid fiber blended deodorization flame-retardant woven fabric. Raw materials of needed warp and needed weft for weaving comprise, by weight, 29 to 35 parts of syndiotactic polypropylene, 18 to 23 parts of polylactic acid, 8 to 12 parts of polyhydroxybutyrate, 3 to 5 parts of montmorillonoid, 0.02 to 0.05 part of canthaxanthin, 0.4 to 0.8 part of diprophylline, 0.5 to 0.9 part of calcium chloride, 23 to 28 parts of catechinic acid fibers, 25 to 30 parts of reed fibers, 18 to 24 parts of flame-retardant fibers, 17 to 23 parts of Lenzing modal fibers, 19 to 27 parts of zein fibers, 7 to 9 parts of oleic acid polyethylene glycol ester, 10 to 14 parts of ethylene glycol monoethyl ether acetate, 3 to 4 parts of peppermint, 2 to 5 parts of isatis roots, 1 to 3 parts of rheum officinale, 85 to 100 parts of 1-butyl-3-methylimidazolium acetate, 95 to 105 parts of 1-allyl-3-methylimidazolium chloride, 4 to 6 parts of auxiliaries and a proper amount of water. The fabric has the advantages of being resistant to odor, flames and abrasion, capable of absorbing sound and isolating heat and the like.

The invention provides a mulberry yellow wine and a making method thereof. The mulberry yellow wine is made from the raw material of mulberry fruit juice, water, glutinous rice, wine yeast, and yeast, wherein, the content of the mulberry fruit juice takes 40-60 percent of the gross weight of the raw materials. The mulberry yellow wine made from the main raw materials of mulberry and glutinous rice maintains the nutrition contents in the raw materials, and comprises more than twenty kinds of amino acids, organic acids, vitamin B and oligosaccharides and so on. The amino acids in the wine which is formed by the fermentation of the proteins in the raw materials, the sugar formed by the hydrolysis and saccharification of the starch in the glutinous rice, the inherent glucose, cane sugar and fruit sugar of the mulberry, the natural wine fragrant formed during the fermentation, mulberry tannic acid, malic acid, vitamin C and fatty acids etc. make sure that the mulberry yellow wine has a taste of sweet and sour and a pleasant fragrance.

The invention provides a multi-channel separation function signal generator and a signal generating method. The multi-channel separation function signal generator comprises a single-chip programmable logic device and an analog unit, wherein an interface circuit, a clock generating circuit and logic control units are arranged in the programmable logic device in an embedded mode. According to the multi-channel separation function signal generator and the signal generating method, separation function signals of several or dozens of channels can be generated directly, each channel function signal has a direct current pattern or a sine pattern or a pulse pattern, the amplitude, the frequency, the phase position and the pulse width parameter of the signals of each channel can be set independently, and the amplitude reaches up to 20V.

The invention relates to a method for preparing activated carbon, in particular to the method for preparing the activated carbon used for flue gas demercuration. The method is characterized by comprising the following steps of: preparing feed coal, and performing anoxybiotic dry distillation, milling, stirring while adding coal tar, extrusion molding, carbonization, activation, milling and dipping on the feed coal to obtain finished products. The method for preparing the activated carbon used for the flue gas demercuration has the advantages of unique process, high technical indexes of produced products and wide application range.

The invention relates to a composition and a preparation process, a testing process and an application thereof. The composition comprises a therapeutically effective amount of candesartan or pharmaceutically acceptable ester or salt, a therapeutically effective amount of amlodipine or other pharmaceutically acceptable salt, 70-150 parts of mannitol or lactose, 2-5 parts of croscarmellose sodium or cross-calcium carboxymethyl cellulose and 5-40 parts of microcrystalline cellulose or corn starch. The composition is easy to prepare, low in production cost, utilizes accessories of unique prescription, and the like, can be prepared into oral preparation in forms of tablets, capsules, granules and the like by means of pharmaceutics, can be checked by different checking processes, has high quality, has functions of treating hypertension, angina pectoris and kidney diseases and has effect of myocardial protection.

The invention relates to a general integration technology for realizing high efficiency of a linear power supply. The invention is characterized in that a automatic power supply regulator tube output and input voltage tracking technology, a large closed-loop feedback control technology, a switch power supply full-range power regulation technology and an electronic component application technology are combined, and for adjustable-output-voltage or fixed-output-voltage linear power supplies which are formed by the following power devices: 1) a three terminal regulator; 2) a large power transistor; 3) an MOS-type field-effect tube; 4) a low-dropout linear integrated regulator or module; and 5) a common linear power supply module, no matter how large the output voltage and the output current of the two kinds of linear power supplies are or no matter how large the variation is, the efficiency of the linear power supplies can be promoted to the utmost extent by using a simplest general method to enable the efficiency of the linear power supplies to exceed the efficiency of low-voltage switch power supplies. Moreover, all general functional circuits for realizing the high-efficiency linear power supply are integrated on one chip which is a special chip for the high-efficiency linear power supply.

The invention relates to a process for processing a complex gold ore containing copper and arsenic. The complex gold ore containing copper and arsenic is processed by combining the steps of reselecting, floating, cyaniding and leaching, calcinating arsenic ore concentrate. The process of the invention comprises the following steps: grinding the raw ore to certain granularity, by using the specific gravity difference of mispickel, copper sulphide and gold, separating mispickel and coarse monomer gold with high specific gravity (gold loading or gold unloading) by using reselection, enriching middling by using flotation to obtain (gold loading or gold unloading) copper concentrate, leaching tailing (if gold-loading gangue ) by cyaniding and stirring to extract fine particle gold in gangue, reselecting arsenic concentrate to calcinate, recovering As2O3 by using low temperature cloth bag arsenic collection technology through air cooling or water cooling, and leaching calcine (if gold-loading calcine) by stirring and cyaniding. The process of the invention has simple device, obtains high technical index, and provides good economic benefit to mine.

The invention belongs to a waterborne nano coil coating and a preparation method thereof. Firstly, an inorganic material with no toxic property, foreign smell and combustion characteristic is used as a basic powder material of a coil coating, a waterborne acrylic emulsion, waterborne epoxy resin, water-soluble functional auxiliaries and other film forming matters are compounded, updated and modified by using a nanotechnology and nano materials, and gaps of large micro materials in a coating structure are filled by using various nano powder materials after the hydration of the coil coating is effectively finished, so that the coating generates a coating function enhancing effect under the synergistic action of multi-effect combination of the nano materials and micro materials, the defect that the performance of the waterborne coil coating prepared by a micrometer technology is lowered is overcome effectively, and the technical performance of the waterborne coil coating is remarkably enhanced. By using the waterborne nano coil coating and the preparation method thereof, the production efficiency is increased, the fire risks and industrial pollution of the traditional solvent type coil coating are eliminated, and meanwhile, the aim of safe, environment-friendly, low-consumption and efficient production is achieved.

The invention relates to a silicon carbide ceramic material, in particular to a silicon carbide honeycomb ceramic pug and a pugging method. Silicon carbide with different grain diameters is adopted as a main material, and then a binder, a pore-forming agent, a lubricating agent, a high polymer release agent, water and a plasticizer are added, after the pugging steps like mixing materials and twice ageing, the pug with high plasticity and high viscidity and used for producing silicon carbide honeycomb ceramics is obtained. According to the silicon carbide honeycomb ceramic pug and the pugging method, provided by the technical scheme of the invention, various technical indices of the produced honeycomb ceramic products are obviously improved when compared with that of the prior art.

The invention relates to an efficient environment-friendly concrete preservative, which comprises the following components in portion by weight: 10 to 18 portions of various benzoic acids and boric acids, 20 to 40 portions of silica fume, 20 to 35 portions of alkalis; 35 to 50 portions of ethanolamine, and 15 to 20 portions of active components. The preservative can be widely applied to various building materials, especially to concrete and cement, and is reliable in rust prevention and corrosion resistance and good in environmental indexes. The preservative has the advantages of containing no mineral oil, containing no nitrite, chromate and the like harmful to human body, adapting to compressive strength (50 MPa in general) of actual requirements, improving strength, durability and heat resistance and meeting the requirements for high-performance concrete, along with no toxicity, no stimulation, no pollution, good construction performance, high dimensional stability, less shrinkage and no cracking in the hardening process.

The present invention discloses a down-conversion module with ultra-wide and large instantaneous bandwidth and a frequency conversion method thereof. The circuit structure of the down-conversion module with ultra-wide and large instantaneous bandwidth comprises a low-frequency stage double conversion branch, a high-frequency stage double conversion branch, a single-pole double-throw switch S1, and an intermediate-frequency amplification branch. The low-frequency stage double conversion branch and the high-frequency stage double conversion branch are symmetrical structures; one end of the low-frequency stage double conversion branch and one end of the high-frequency stage double conversion branch are configured to receive radio-frequency signals, and the other end of the low-frequency stage double conversion branch and the other end of the high-frequency stage double conversion branch are configured to connect with the single-pole double-throw switch S1; and the single-pole double-throw switch S1 is configured to select one of the low-frequency stage double conversion branch and the high-frequency stage double conversion branch to connect with the intermediate-frequency amplification branch. The down-conversion module with ultra-wide and large instantaneous bandwidth has the advantages of high integration density, light weight, small size, low cost, high reliability, good manufacturability and the like. The present invention further discloses a frequency conversion method of a down-conversion module with ultra-wide and large instantaneous bandwidth.

The invention discloses a preparation method of lithium bis (fluorosulfonyl) imide, which comprises the following steps: dropwise adding bis (fluorosulfonyl) imide under the condition that anhydrous lithium halide salt and a non-polar solvent are mixed and stirred, and absorbing tail gas by adopting alkali liquor; continuously reacting for 1-12 hours at the temperature of 0-60 DEG C after dropwise adding, cooling to room temperature, dropwise adding an organic alkaline compound, and adjusting the pH value of the reaction liquid to 5-8; and filtering, and leaching a filter cake by adopting a non-polar solvent to obtain a lithium bis (fluorosulfonyl) imide crude product. The method has the beneficial effects of mild reaction, simple process and low cost, and is suitable for industrial production.