46results about How to "Adsorption does not affect" patented technology

The invention discloses cyclodextrin modified nano-silver hydrogel, and a preparation method and an application thereof. The cyclodextrin modified nano-silver hydrogel contains 0.1%-0.4% by mass of nano-silver particles modified by in-situ reduction of cyclodextrin, the nano-silver particles are uniformly dispersed, the tensile strength of the cyclodextrin modified hydrogel is 3.5-6 MPa, and the relative standard error for measuring a molecular surface scanning Raman signal is lower than 10%. The preparation method comprises the following steps: (1) uniformly mixing cyclodextrin with a silver salt aqueous solution to obtain a mixture, and heating under an alkaline condition to react to obtain cyclodextrin modified nano-silver gel; and (2) adding a gelator, and preparing the cyclodextrin modified nano-silver hydrogel via a frozen gel forming method. The cyclodextrin modified nano-silver hydrogel provided by the invention is good in uniformity, strong in repeatability, good in mechanical property, sensitive in detection, simple to prepare and mild in reaction, and is used as a surface enhanced Raman substrate.

The invention relates to a beneficiation method for low-grade difficult-to-treat scheelite, and the beneficiation method can be applied to obtain tungsten concentrates from the low-grade difficult-to-treat scheelite containing calcite and fluorite. The beneficiation method comprises the steps of ore preparation and ore grinding, gravity separation by a table concentrator and re-grinding, desulphurization by flotation, roughing, scavenging and concentrating. According to the beneficiation method, a novel inhibitor YFW-12 is developed, and the inhibitor can reduce the adsorption quantity, on the surface of the calcite and the surface of fluorite, of a collecting agent without affecting adsorption, on the surface of the scheelite, of the collecting agent, has a capability of selective inhibition of the calcite and the fluorite, and is non-toxic and is low in cost. A novel collecting agent BF-01 is developed, and the collecting agent is high in collecting capability and is good in environmental adaptation. The novel inhibitor YFW-12 and the novel collecting agent BF-01 are utilized to realize efficient utilization of the scheelite containing the calcite and the fluorite, so that economic benefits are remarkable.

The invention relates to a novel suction cup set. The novel suction cup set comprises three gas leakage prevention suction cups, a suction-adjustable suction cup and connecting frame; suction of the suction-adjustable suction cup can be adjusted by changing the position of a screw; the two sides pressure in second shell bodies are divided by second pistons of the gas leakage prevention suction cups, when suction of a single gas leakage prevention suction cup is not firm, normal suction of the other suction cups in the suction cup set is not influenced; and the suction-adjustable suction cup isconnected with the gas leakage prevention suction cups through the connecting frames. According to the novel suction cup set, the problems that the suction is not adjustable in a traditional suctioncup set, and when a single suction cup leaks, normal suction cannot be conducted on the whole suction cup set are solved.

The invention discloses a method for preparing a high-efficiency formaldehyde adsorption material based on activated carbon. The specific preparation process is as follows: add oxidized activated carbon to epichlorohydrin, add triethylamine to it at the same time, heat up and reflux to obtain chlorinated grafted activated carbon ; The pretreated paper fiber is reacted with chlorinated grafted activated carbon to obtain a cellulose-loaded modified activated carbon material; the cellulose-loaded modified activated carbon material is subjected to amination reaction to obtain an adsorption material. In the present invention, the activated carbon is oxidized and then grafted and modified to graft on the cellulose. The cellulose contains abundant hydroxyl groups and can introduce a large amount of amino groups through amination. At the same time, the hydroxyl groups produced in the grafting process can also undergo amination reaction, and a large number of amino groups are introduced, so that the prepared adsorbent not only contains a large number of amino groups, but also has a large specific surface area, which improves the adsorption performance of the adsorbent on formaldehyde.

A process for preparing the treating agent used to treat low-concentration heavy metal sewage containing Cr and Cd includes such steps as thermal acid washing of raw silica gel, introducing the wet air from the reactor of the saturated sodium (or potassium) bromide solution to the container of water vapour saturated air and silica gel to generate a water molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain the silylated silica gel, and graft reaction on vinylimine polymer.

The invention relates to a curing agent and a curing method thereof. The polluted soil heavy metal curing agent is characterized by comprising, by weight, 30-40% of fly ash, 35-51% of lime, and 19-35% of peat. According to the present invention, when the curing agent is used to treat the polluted soil, the curing agent and the heavy metal-polluted soil are completely mixed according to a weight ratio of 1:15 so as to obtain a mixed material, water with the amount of 40% of the weight of the mixed material is added, and complete stirring mixing is performed; and the polluted soil heavy metal curing agent completely adopts the nature minerals as the raw materials so as not to produce secondary pollution, and the heavy metals are cured while the soil fertilizer efficiency can be effectively improved so as to solve the technical problems of significant soil pH value changing and soil hardening of the existing chemical repair method.

A process for preparing the treating agent used to treat toxic heavy metal waste water containing Pb and Cu includes such steps as thermal acid washing of raw silica gel, introducing the wet air from the reactor of saturated sodium (or potassuim bromide solution to the container of water vapor saturated air and silica gel to generate a molecule layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain silylated silica gel, graft reaction on vinylimine polymer, and reacting on sodium chloroacetate.

The invention aims to provide a movement following glass cleaning robot based on negative pressure absorption. The movement following glass cleaning robot comprises a cleaning device and a cleaning guiding device which are arranged at two sides of cleaned glass. The cleaning device comprises a robot support and a turbofan. The front end and the back end of the robot support are respectively provided with a cleaning member supporting carrier on which a cleaning member is mounted. The turbofan is fixed on the upper surface of the robot support. A DC motor is mounted on the turbofan. The lower surface of the robot support is provided with a negative pressure chamber which corresponds with the turbofan. The left side and the right side of the robot support are provided with Hall elements. The cleaning guiding device comprises a guided cleaning member carrier and a strong magnet fixing board. A strong magnet is fixed between the guided cleaning member carrier and the strong magnet fixing board. The movement following glass cleaning robot can perform wiping on the inner layer and the outer layer of the glass and furthermore has high operation efficiency.

The invention relates to an adsorption inhibitor of carboxybetaine surfactant, which belongs to the technical field of colloid and interface chemistry. This type of adsorption inhibitor is an oligomeric quaternary ammonium salt, the number of nitrogen atoms in the molecule is 3-8, and the number of methylene groups between the nitrogen atoms is 2-8. In aqueous medium, these compounds ionize into polycations. Due to their high charge density, they can be preferentially adsorbed to negatively charged rock or oil sand surfaces, thereby reducing the adsorption of carboxybetaine surfactants on rock or oil sand surfaces. and its hydrophobic effect on rock or oil sand surfaces. For example, it can reduce the saturated adsorption capacity of cetyl dimethyl carboxybetaine on the surface of Daqing oil sands by 48%; in the range of 1×10‑6~1×10‑4mol / L, it can make cetyl The contact angles of aqueous solutions of alkyldimethylcarboxybetaines and didodecylmethylcarboxybetaines on glass slides with negatively charged surfaces decreased from a maximum of >150° to <20°. These compounds can therefore be used as adsorption inhibitors in non-alkali binary compound flooding.

The invention discloses a method for preparing a filter medium for removing arsenic from drinking water, which comprises the following steps of: a) mixing raw materials, namely ultra-high molecular weight polyethylene powder, powdered activated carbon, ferromanganese ore powder, red mud powder and a foaming agent in a weight ratio of 150-300:50-200:50-200:50-200:50-150; and b) pressing the mixture obtained by the step a) in a mold, sintering and cooling. Compared with the prior art, the prepared filter medium can efficiently remove the arsenic from the drinking water, is simple and convenientto use and is suitable for treating drinking water at a home terminal; and detection results show that the filter medium prepared by the method has the removal rate of 95 to 99 percent for the arsenic in the drinking water.

The invention relates to the application of an inhibitor AA / AMPS in positive flotation demagnesization of phosphate rock, which belongs to the field of mineral processing and purification technology of phosphate rock. This application is to add inhibitor AA / AMPS in the process of positive flotation demagnesification of phosphate rock. Specifically, the inhibitor AA / AMPS is used to prepare phosphate rock pulp, wherein the mass concentration of the phosphate rock pulp is 20-25%; the inhibitor AA / AMPS accounts for 100-140 g / t of the phosphate rock pulp. Inhibitor AA / AMPS (acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer), for phosphate rock containing a lot of dolomite, under alkaline conditions, inhibits the flotation of dolomite by positive flotation process It can effectively increase the difference in flotation performance between apatite and dolomite, and facilitate the efficient removal of dolomite. In addition, the inhibitor AA / AMPS has the characteristics of strong selectivity of inhibitory performance, low cost, and simple use, etc. It can effectively reduce the magnesium content of phosphate concentrate, improve the quality of concentrate, and realize the flotation of high-magnesium and low-grade phosphate rock to reduce magnesium. Target.

The invention relates to a clamp for ship block transferring and a method for ship block transferring through the clamp. The clamp comprises a magnet block, a switch handle for controlling the magnetism, a set of clamping heads and a set of connecting rods. Each clamping head comprises a clamping head body and a connecting arm. Each clamping head body is provided with a clamping opening. The connecting end of each connecting arm is movably connected with one end of the corresponding connecting rod through a connecting hole. The other end of each connecting rod is connected with the magnet block. According to the clamp for ship block transferring and the method for ship block transferring through the clamp, the structure is simple, the design is flexible, the weight is light, and installation of the clamp by construction personnel is convenient; and the clamping heads are matched with strut type shelving piers for use, the strut type shelving piers can be adsorbed on a block structure, accordingly, the strut type shelving piers can be transferred together with the block structure, the workload for arranging the strut type shelving piers for the second time is avoided, and a second set of strut type shelving piers do not need to be prepared, so that the strut type shelving pier vacancy rate is decreased.

A process for preparing the treating agent used to treat high-toxicity heavy metal waste water containing Hg, Cd and Pb includes such steps as thermal acid wasing of raw silica gel, introducing the wet air from the reactor of saturated potassium (or sodium) bromide solution to the container of water vapor saturated air and silica gel to generate a molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain silylated silica gel, graft reaction on vinylimine, and reacting on vinylthioether.