197 results about "Chloride salt" patented technology

The invention relates to a preparation method and application of a mine water flocculation agent with an adsorption function. The mine water flocculation agent is prepared from the following raw materials: a mineral material, chitosan, water, silicate, acid, aluminum chloride salt, ferric chloride salt and polyacrylamide. The preparation method comprises the following steps: carrying out heat treatment on a mineral material, then adding water and chitosan, then adding silicate, reacting to generate polysilicic acid, grafting the polysilicic acid on chitosan macromolecules, then adding aluminum chloride salt and ferric chloride salt, reacting, finally adding polyacrylamide, and aging to obtain the composite material. The mine water flocculating agent provided by the invention can synchronously remove suspended matters, fluorides and COD (Chemical Oxygen Demand), and has the advantages of low dosage, short reaction time and high settling speed.

The utility model relates to a waste incineration fly ash washing wastewater treatment system, which comprises a raw water tank for collecting fly ash washing wastewater; the heavy metal removal reaction tank is used for removing heavy metals from the wastewater to obtain a mud-water mixture, and carrying out solid-liquid separation on the mud-water mixture to generate heavy-removed water; the hardness removal reaction tank is used for removing calcium and magnesium ions from the heavy water to obtain a mud-water mixture II and carrying out solid-liquid separation to generate softened water and calcium carbonate sludge; the pH adjusting barrel is used for adjusting the pH of the softened water to generate reclaimed water; the COD removal system is used for removing COD in the reclaimed water; the multi-medium filter is used for filtering the COD-removed water to obtain filtered water; the ultrafiltration equipment is used for filtering the filtered water to obtain ultrafiltration permeate liquid; the nanofiltration equipment is used for carrying out nanofiltration on the ultrafiltration permeate liquid, and chlorine salt enters separation membrane permeate liquid; and the evaporative crystallization equipment is used for evaporating and concentrating the separation membrane permeate to generate sodium chloride and potassium chloride. The device disclosed by the utility model can efficiently remove COD (Chemical Oxygen Demand) and heavy metals, reduce calcium ions in washing wastewater and ensure the quality of subsequent evaporative crystallization products.

The invention provides a method for extracting lithium, rubidium and cesium through strengthened roasting of lepidolite and preparing lithium, rubidium and cesium salt, and belongs to the technical field of lithium, rubidium and cesium extraction.The method comprises the steps that lepidolite, a carbon / sulfur additive and chlorine salt are subjected to ball milling, roasting and grinding, and roasted sand is obtained; through thermodynamic analysis on the lepidolite, after the carbon / sulfur additive is introduced, the Gibbs free energy of the reaction of the lepidolite and the additive is reduced, the reaction trend is improved, and in the roasting process, ions such as sodium, potassium and calcium in chlorine salt and the carbon / sulfur additive are replaced in a similar isomorphic manner, so that lithium, rubidium and cesium are leached more easily; in the process of intensifying roasting by introducing the carbon / sulfur additive, the use amount of the chlorine salt additive is reduced by 10-25%, potassium-sodium mixed salt and calcium oxalate are recycled, the recycling rate is greater than 50%, and the leaching residue amount is reduced by 30-40%; and the carbon / sulfur additive can directionally promote the reaction of the calcium salt additive and the lepidolite and convert the calcium salt additive into dicalcium silicate, so that the leaching residues obtained in the subsequent leaching process are easier to recycle.

According to the ultralow-sulfur ultralow-oxygen electrolytic high-purity iron preparation method, electrolyte adopts a chlorate system, the removal rate of the sulfur element can be increased by 90% or above, the sulfur content in an electrolytic iron product is lower than 0.1 ppm, quality improvement of the electrolytic high-purity iron is facilitated, in addition, a reduction furnace is adopted for deoxidation, the oxygen content of the electrolytic iron can be reduced by 90% or above, and the quality of the electrolytic high-purity iron is improved. And the oxygen content in the electrolytic iron reaches below 10ppm, so that the difficulty of high oxygen content in the electrolytic iron is solved.

The invention discloses a method for extracting lithium from brine containing sulfate radicals. The method comprises the following steps: S1, selecting brine containing sulfate radicals, filtering to remove impurities, and adjusting the pH value to 5-7; s2, enabling the brine to pass through a resin column containing an aluminum-based lithium adsorbent, and extracting lithium ions; s3, leaching the aluminum-based lithium adsorbent with water, performing countercurrent analysis, and collecting an analyzed lithium-containing liquid A; repeating the steps S2 and S3 until the adsorption capacity of the aluminum-based lithium adsorbent is reduced to 70% or below of the initial capacity; s4, soluble chlorate is used for carrying out salt top material replacement on sulfate radicals mixed in the aluminum-based lithium adsorbent, pure water analysis is carried out, and analyzed lithium-containing liquid B is obtained; and combining and analyzing the lithium-containing liquid. According to the method, the problem of performance degradation of the aluminum-based lithium adsorbent in the process of extracting the lithium from the brine containing the sulfate radicals is solved in a manner of adjusting the pH value in the front stage and replacing the sulfate radicals with the chlorine radical jacking material after adsorption, and various materials in the system can be basically recycled, so that the operation cost is fundamentally reduced, and meanwhile, the environmental protection problem caused by introduction of a large amount of salt is completely eradicated.

The invention discloses marine concrete resistant to chlorine salt erosion and a preparation method thereof, and belongs to the technical field of building materials. The marine concrete is prepared from the following components in parts by mass: 280 to 350 parts of cementing material, 1100 to 1200 parts of aggregate, 150 to 180 parts of mixing water and 2.5 to 4.0 parts of high-efficiency water reducing agent, and the cementing material is prepared from 210 to 270 parts of ordinary Portland cement, 50 to 70 parts of superfine slag powder and 10 to 20 parts of modifier on the basis of the cementing material; on the basis of the modifier, the modifier is prepared from 30 to 45 parts of hexacalcium aluminoferrite, 25 to 35 parts of metaettringite, 20 to 35 parts of tobermorite, 3 to 6 parts of nano attapulgite and 2 to 4 parts of a nano composite material. The components can accelerate the early hydration of cement and the volcanic ash reaction process in the concrete hardening process, so that the concrete can form a compact microstructure in the curing period and cooperate with the curing effect of a hydration product on chloride ions, thereby remarkably improving the chloride ion penetration resistance of the concrete, prolonging the service life of the structure and improving the concrete quality. The method is suitable for port engineering, maritime work structures and buildings in salinized soil areas.

The invention provides a preparation method of a chlorine salt conversion film with high corrosion resistance, which comprises the following steps: dissolving manganese chloride and calcium chloride in water, then adding ammonium dihydrogen phosphate, sodium nitrate and EDTA (Ethylene Diamine Tetraacetic Acid), and carrying out conversion treatment at 50-60 DEG C for 10-15 minutes to obtain a conversion film solution; placing the conversion film solution in a water bath kettle with the temperature of 50-60 DEG C for heating and heat preservation; the magnesium alloy is put into the conversion film solution to form a film for 10-15 min at the film forming temperature of 50-60 DEG C, and a conversion film is formed on the surface of the magnesium alloy; and taking out the magnesium alloy, washing and drying the conversion film, and characterizing. According to the preparation method of the chlorine salt high-corrosion-resistance conversion film, the preparation cost is low, and the prepared film layer is thick and uniform.

The invention discloses a fused salt purification method and a fused salt purification device.The fused salt purification method comprises the following steps that S1, in an oxygen-free and water-free operation environment, fused salt is put into a reaction container, firstly, the fused salt is heated to a first preset temperature and kept for a first preset duration, and then the fused salt is heated to a second preset temperature and kept for a second preset duration; s2, mixed gas of HCl and H2 is introduced into the reaction container heated to the second preset temperature, HCl is cut off after a period of time, then H2 is used for bubbling for a period of time, inert gas is introduced for bubbling, residual HCl and H2 in the molten salt are removed, and purified molten salt is obtained. The molten salt purification device comprises a gas supply system, a reaction container and a storage container, the device can treat kilogram-level chlorine salt in batches, and the molten salt purification efficiency is high.

The invention provides chlorine-doped nickel oxide, a preparation method and application thereof and a photoelectric device, and relates to the field of photoelectric materials.The preparation method of the chlorine-doped nickel oxide comprises the following steps that S10, an aqueous solution of nickel salt and chlorine salt is obtained, an alkaline solution is dropwise added, centrifugation is conducted, and a coprecipitate is obtained; s20, washing, drying and roasting the coprecipitate to obtain chlorine-doped nickel oxide; wherein the molar ratio of the nickel salt to the chlorine salt is (10-20): (1-4). In the technical scheme provided by the invention, the nickel salt and the chlorine salt are co-precipitated to generate a co-precipitate of nickel hydroxide and chloride, and then the co-precipitate is washed, dried and roasted to prepare the chlorine-doped nickel oxide, so that the hole mobility of the chlorine-doped nickel oxide is improved; the alkaline solution is dropwise added for coprecipitation, so that the particle size of the coprecipitate can be reduced, and the nanoscale chlorine-doped nickel oxide is prepared, so that the dispersity of the chlorine-doped nickel oxide in a mobile phase is improved, and the chlorine-doped nickel oxide can be applied to preparation of a hole transport film and improvement of the uniformity of the hole transport film.

The invention provides a Cr2AlC-derived two-dimensional carbide material and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a Cr2AlC MAX phase: uniformly mixing three raw material powders of Cr powder, Al powder and C powder, then mixing with sodium chloride salt and potassium chloride salt, heating and sintering, cooling, washing, and carrying out vacuum drying to obtain a Cr2AlC MAX phase powder material; and (2) stripping of the Cr2AlC MAX phase: grinding and uniformly mixing the Cr2AlC MAX phase powder in the step (1), copper chloride salt, sodium chloride salt and potassium chloride salt, heating and preserving heat. And cooling to room temperature, centrifuging with deionized water, centrifugally washing with a FeCl3 solution, and freeze-drying to obtain the two-dimensional carbide material. The method is simple in step, mild in reaction, green and safe, complete and efficient stripping of Cr2AlC can be achieved, and the method can be used for two-dimensional stripping of other three-dimensional materials; the types of ions adsorbed on the surface of the two-dimensional material sheet layer are simple, F <-> harmful to electrochemical performance is not carried, and the obtained novel two-dimensional porous carbon material can be used as an electrode material in a supercapacitor.

The invention discloses a building material base material produced by utilizing household garbage incineration waste and a preparation process of the building material base material. The base material is prepared from the following components in percentage by weight: 30 to 50 percent of fly ash, 20 to 40 percent of bottom slag, 10 to 20 percent of Portland cement, 3 to 10 percent of Fe-N-C-coated Cu-NPs modifier and 5 to 15 percent of water. Fly ash is subjected to water washing and 600-800 DEG C heat treatment to remove chlorine salt and organic matter, and bottom slag is subjected to screening and magnetic separation to control the particle size and the iron content. Fe-N-C-coated Cu-NPs is prepared through high-temperature pyrolysis and a wet chemical method, and dioxin decomposition and heavy metal solidification are catalyzed. The preparation process comprises the steps of pretreatment, mixing, vibration molding (5-10 MPa) and wet curing (20-35 DEG C, 80-95% humidity and 7-21 days). The compressive strength of the base material reaches 11.8-14.0 MPa, the dioxin content is lower than 0.1 ng-TEQ / kg, the heavy metal curing rate is 96.5-98.5%, the porosity is 10.5-12%, solid waste resource utilization is achieved, and environmental protection and economic benefits are achieved.

A method of treating a waste stream comprising an organic amine compound complexed with heavy metal ions. The process comprises the steps of: (1) adjusting the pH of the waste stream to between about 4 and about 10; (2) b) adding a chloride salt to the waste stream to produce a concentration of chloride ions in the waste stream; and (3) circulating the waste stream through the electrochemical reactor. The electrochemical reactor includes an electrode array including alternating anodes and cathodes. The waste stream is recycled through the electrochemical reactor for a sufficient period of time to hydrolyze amine compounds in the waste stream.

The invention provides a method for synthesizing sodalite from 4A zeolite and synchronously solidifying radioactive waste salt in situ, and belongs to the technical field of radioactive waste salt solidification treatment of spent fuel dry post-treatment. The preparation method comprises the following steps: mixing 4A zeolite powder, radioactive waste salt, alkali metal chloride salt and a dispersing agent according to a certain liquid-solid ratio, heating, and drying to obtain a cured precursor; and grinding and sieving the cured precursor, and sintering under the condition of not exceeding 900 DEG C to obtain the sodalite cured body. The method provided by the invention is low in energy consumption, simple in process operation, small in 4A zeolite dosage, high in radioactive waste salt coating rate and high in radioactive element fixing amount; the synthesized sodalite solidified body is high in thermal stability and mechanical hardness, the normalized leaching rate after the sodalite solidified body is soaked in water at 90 DEG C for 28 days is smaller than 5 * 10 <-4 > g / (cm < 2 >. D), and the sodalite solidified body can be geologically stored for a long time, so that the migration, diffusion and leakage risks of radioactive substances are effectively reduced.

A porous iron phosphate, a preparation method therefor, and the use thereof. The preparation method comprises the following steps: (1) mixing a carbon source, a chloride salt and an iron source with a solvent, adding aqueous ammonia, freezing same, and performing freeze-drying treatment to obtain a xerogel material; (2) carbonizing the xerogel material to obtain a Fe2O3-C precursor having a 3D network structure; and (3) mixing the Fe2O3-C precursor, urea and phosphoric acid with a solvent, heating and reacting same, and then carrying out sintering treatment to obtain the porous iron phosphate. The iron phosphate prepared by the method has a three-dimensional porous structure; and because of said structure, a lithium iron phosphate positive electrode material prepared by means of using the iron phosphate as a precursor exhibits an increased specific surface area, which shortens the diffusion path of lithium ions and accelerates the diffusion, thereby improving the electrochemical properties of lithium ion batteries.

The invention belongs to the technical field of material corrosion protection, and particularly relates to a titanium-based corrosion inhibitor of a chloride molten salt medium and a preparation method and application of the titanium-based corrosion inhibitor. The corrosion inhibitor comprises an inner core made of sponge titanium particles; the outer layer is a mixed layer of magnesium oxide and amorphous carbon, and in the mixed layer, the magnesium oxide is dispersed in the amorphous carbon in the form of particles of 1-20 nm. The method comprises the following steps: S1, obtaining sponge titanium particles; s2, mixing a magnesium source, a carbon source and a dispersing agent, and preparing a solution with water; s3, adding sponge titanium particles into the solution, and uniformly stirring; s4, drying the dispersion liquid in a hot air atmosphere; and S5, calcining the dried mixed particles in a nitrogen atmosphere to obtain the titanium-based corrosion inhibitor of the chloride molten salt medium. The corrosion inhibitor can effectively remove impurities such as water and oxygen in the chlorate, and the corrosion resistance of a container material in the chlorate is improved.

The invention discloses a method for recovering manganese and lead by reducing and leaching electrolytic manganese anode slag through alkali-activated sulfur powder, which comprises the following steps: S1, uniformly mixing the electrolytic manganese anode slag, the sulfur powder and solid alkali, and heating and activating to obtain an activated and reduced material; s2, the activation reduction material is leached with dilute sulfuric acid, and a manganese-containing leaching solution and lead sulfate-containing leaching residues are obtained after liquid-solid separation; and S3, the leaching residues are leached through a chlorine salt solution, and a lead-containing solution and the leaching residues are obtained after solid-liquid separation. The method is simple and easy to operate, the reducing agent is wide in source and low in cost, the leaching rate of manganese and lead can be effectively increased, and the concentration of impurities in the leachate is low; secondary waste residue pollution and waste gas pollution are not generated in the whole process, so that the pollution to the environment is effectively reduced.

The invention provides vanadium-based MXene and an etching preparation method thereof, and the etching preparation method comprises the following steps: step 1, placing MAX powder, chlorate and alkali in a container, wherein the chlorate is placed between the MAX powder and the alkali; 2, the container is heated and subjected to heat preservation for a certain time; 3, after reacting for a certain time, stopping heating and cooling to obtain an etching mixture; and 4, the etching mixture is subjected to washing treatment and drying treatment, and the vanadium-based MXene can be obtained. According to the etching preparation method, the problem of over-etching can be avoided, and meanwhile, the preparation method is better in selectivity; no fluorine participates, so that the safety is relatively high; the etching preparation time is short, reaction equipment is simple, and the cost is low.

The invention discloses a high-entropy metal sulfide nano material and a preparation method thereof, and relates to the field of high-entropy materials.Transition metal chlorate and sodium chloride are placed in a first reaction boat in the upstream area of a reaction container; placing the zinc sulfide nano-template in a second reaction boat in a downstream area of the reaction container; heating the reaction container to 500-525 DEG C at a first heating rate, keeping the temperature for 20-40 minutes, and transporting metal chloride gas volatilized by the eutectic effect of the precursor to a second reaction boat in a downstream area along with the dynamic airflow, so that the zinc sulfide nano-template reacts with the metal chloride gas; and cooling to room temperature at a second cooling rate, and collecting a solid product in the second reaction boat to obtain the high-entropy metal sulfide nano material. According to the method, the complex microstructure of the precursor template can be copied, and topological conversion is realized; and the chemical morphology, the components, the crystal structure and the like of the high-entropy nano material can be regulated and controlled.

The present invention relates to the use of at least one oxoacid reducing element, and optionally a salt of the oxoacid reducing element, in a molten chloride fuel salt for a molten-salt nuclear fission reactor (MSR). The present invention also relates to a process of nuclear fission within a molten-salt nuclear fission reactor (MSR), said process being characterized in that it is carried out within the MSR reactor, placed in which is an oxoacid reducing element, and optionally a salt of the oxoacid reducing element. The present invention further relates to a molten-salt nuclear fission reactor (MSR) comprising a molten chloride fuel salt, and a mixture comprising the aluminum metal, and its oxidized form, as an oxoacid reducing element, and optionally a salt of the oxoacid reducing element.

The present invention relates to the technical field of ice prevention for foundation pits, and in particular, to an ice-preventing concrete material, its application, and a method for constructing ice prevention for the side walls of foundation pits. The ice-preventing concrete material includes concrete and ice-preventing particles, and the ice-preventing particles are obtained by mixing silicate cement, chloride salts, ammonium salts, lignin, and water; the chloride salt is one of calcium chloride, magnesium chloride, potassium chloride, ferric chloride, and aluminum chloride, and the ammonium salt is one of urea, ammonium nitrate, and triethanolammonium. The present invention prevents the formation of ice hanging on the side walls of foundation pits through the slow dissolution and penetration principle of ammonium salts and chloride salts, thereby avoiding safety accidents caused by ice hanging falling; the concrete and ice-preventing particles can be mixed evenly, so that they can be effectively applied or sprayed on the side walls of foundation pits, and the preparation is simple, the degree of structural corrosion is small, the pollution to the soil is small, and it has the characteristics of economy, safety, and environmental protection.

This invention discloses a precision grinding process for machining the shaft of a swimming pool pump motor, relating to the field of shaft precision grinding technology. The process includes: Step 1: Establishing an incident window using a coherent jet nozzle, allowing the jet to penetrate the air gap into the grinding zone, first wetting and then introducing the load, and recording the incident window, jet posture, and dressing rhythm as working condition metadata; Step 2: After precision grinding, according to the material type, magnetic noise is used for ferromagnetic steel and X-ray diffraction is used for austenitic steel to obtain thermal damage and residual stress, and combining this with cleanliness to generate a surface integrity label and bind it to the working condition metadata; Step 3: Performing deionized ultrasonic cleaning and rinsing according to the label to remove chloride salts and free iron, rebuilding the passivation film according to specifications using chemical passivation, controlled drying, and clean sealing; Step 4: Under the premise of qualified chemical condition, performing isotropic ultra-finishing and low-plasticity rolling on the sealed working zone to form surface compressive stress and maintain geometric tolerances, quickly indicating inspection and writing back the label.

The present invention provides a post-treatment method for improving the purity of K / NaMgF3 particles, particularly relating to the field of chemistry. The method comprises the following specific steps: (1) placing K / NaMgF3 particles in an aqueous solution and stirring and dissolving them thoroughly; (2) adding a fluoride salt and a buffer to the solution treated in step (1) and stirring thoroughly; (3) adding a magnesium salt and a chloride salt to the solution treated in step (2) and stirring thoroughly; and (4) pouring out the residual solution treated in step (3) and drying the residual solid in step (4). The K / NaMgF3 of the present invention remains unchanged and does not introduce new impurities. The method can remove MgF2 impurities while neither destroying the structure of K / NaMgF3 nor introducing new impurities. The steps are closely related, and no intermediate rinsing or treatment is required. The process is simple, and while ensuring efficient impurity removal, energy conservation and environmental protection are also taken into account. The method is applicable to various K / NaMgF3 preparation methods, does not use toxic and hazardous substances, and has low waste liquid treatment costs.

A comprehensive utilization and treatment method and equipment system for ammonia distillation wastewater from the ammonia-soda process includes an evaporation and concentration chamber, a heat pump system, a cooling chamber, a freezing separation chamber, a heat exchanger, an evaporation and crystallization chamber, and a cooling crystallization chamber. Combined with solar radiation, the wastewater undergoes a multi-stage heat exchange cycle through evaporation, cooling and freezing separation, gas-liquid separation, evaporation and crystallization, and cooling crystallization. This process effectively and continuously separates sodium chloride and calcium chloride salts while recovering fresh water. The sodium chloride recovery rate is 75%, the calcium chloride recovery rate is 75%, and the fresh water recovery rate is 55%. This reduces the input cost of raw salt and the amount of mixed solids landfilled in the alkali production process, lowering operating costs. The wastewater can be directly used as lime slurry or, after treatment, as raw water for molten salt, conserving water resources. Through the comprehensive utilization of the wastewater, evaporation efficiency is increased, land area previously occupied by solar pond evaporation of the wastewater is reduced, and the comprehensive utilization of waste resources is maximized.

A reagent for chlorine analysis includes N, N-diethyl-p-phenylenediamine (DPD), an inorganic chloride salt at a concentration of 0.5 M or more, and water. Further, a method for detecting chlorine in an aqueous sample includes performing a photometric assay on a test sample. The test sample comprises: a water-containing sample; and a DPD reagent containing DPD, an inorganic chloride salt having a concentration of 0.5 M or more, and water. The reagents and detection methods can be used with little or no strong acid.

The invention belongs to the technical field of safety and environmental protection, and provides a coalbed methane produced water resource utilization process which comprises the following steps: obtaining coalbed methane produced water containing various chloride salts, and pretreating the coalbed methane produced water containing various chloride salts to remove impurities; the method comprises the following steps: conveying coal bed gas produced water from which impurities are removed and which contains various salts such as chlorides and the like to a multi-effect evaporation assembly, and sequentially carrying out five-effect countercurrent evaporation, three-effect countercurrent evaporation and single-effect vacuum evaporation treatment, so as to obtain NaCl solids, KCl solids and salt slurry containing CaCl2; and feeding the salt slurry containing CaCl2 into a spray drying device, and drying to obtain a CaCl2 solid. NaCl solids, KCl solids and CaCl2 solids are obtained through five-effect countercurrent evaporation, three-effect countercurrent evaporation, single-effect vacuum evaporation and drying treatment, salt products meet the requirements of industrial salt, and coal bed gas produced water is utilized to a large extent.

The application relates to the technical field of concrete testing, and discloses a high-performance concrete testing method for resisting the action of chloride salt freeze-thaw, which comprises a workbench, a plurality of detection stations are arranged on the workbench, a plurality of sensing control lifting frames are arranged on the two sides of the workbench, a plurality of detection cover plates are arranged on the top of the sensing control lifting frames, the detection cover plates correspond to the positions of the detection stations, in the application, the concrete test sample is placed on the detection station, when the conveying belt conveys the sample to the specified position, the sensing control lifting frame senses the position of the detection station, drives the detection cover plate to move downwards until the cover plate covers the detection station, at this moment, the detection probe is located in the detection station, the internal concrete sample is proportionally detected, and the detection data is uploaded to the transmitter after the detection is completed, so that the purpose of accurately detecting the concrete is achieved.

The utility model discloses an experimental device, which comprises a test piece box, a plurality of test cavities, a plurality of connecting rods, a plurality of connecting rods and a plurality of connecting rods, the salt solution box is provided with a salt storage box, a salt conveying pipe and a plurality of mixed liquid boxes, and the salt conveying pipe is used for conveying chlorate and sulfate to each mixed liquid box; a plurality of water pumps are arranged, and each test cavity is communicated with the corresponding mixed liquid box through the corresponding water pump; the temperature control device comprises a compression condenser and a heater, the compression condenser is used for refrigerating the test piece, and the heater is used for heating the test piece; and the control system is used for controlling the operation of each component. By arranging the multiple independent test cavities, the multiple independent mixed liquid boxes and the temperature control device, the test device has multiple test function modes, in addition, under different function modes, different temperature parameters can be controlled through the temperature control device, the actual road environment can be better simulated, and the accuracy of test results can be ensured to a great extent.

This invention discloses a process for preparing chlorides by reducing chlorination with rare metal oxides, comprising the following steps: S1, in an inert atmosphere, a mixture containing rare metal oxide powder, a reducing agent, and a chloride salt is subjected to a reduction reaction at a predetermined temperature 1; S2, the temperature is lowered to a predetermined temperature 2, oxygen is introduced, and the concentration of oxygen in the mixed gas is adjusted to carry out a chlorination reaction, and the chlorinated product is condensed and collected. This invention eliminates the need for gaseous chlorinating agents such as chlorine or hydrogen chloride, avoiding the leakage risks of liquid chlorine and compressed hydrogen chloride during storage and transportation; the raw materials can be directly rare metal oxides, with a wide range of sources, good process adaptability, and significantly reduced production costs.

The invention relates to an impurity removal method for a hydrochloric acid leaching solution containing magnesium minerals, in particular to a method for removing nickel from the hydrochloric acid leaching solution containing the magnesium minerals under high magnesium concentration. According to the method for removing the nickel impurities through the coprecipitation method when the magnesium concentration is high (larger than 50 g / L), the nickel removal effect is good, the nickel slag grade is high, the magnesium loss is small, and the nickel impurities in the magnesium chloride salt solution are low. The high magnesium concentration is that the magnesium concentration is greater than 50g / L, the method is a co-precipitation method, and a neutralizer and an iron inducer are respectively added into the leachate, so that iron ions and nickel ions are subjected to co-precipitation reaction. The method has the following advantages: (1) the iron inducer is added, so that impurities such as nickel can be effectively removed when the concentration of magnesium ions is relatively high; extra water addition for dilution is not needed, and the current production scale is not influenced. And (2) the nickel slag obtained by impurity removal is high in nickel content and high in economic value. And (3) the iron inducer is low in price.

The invention discloses a method for removing trace chloride salts in aminosilane, comprising the following steps: S1 provides a resin fixed bed, wherein an ion exchange resin is fixed in the resin fixed bed; S2 passes crude aminosilane liquid into the resin fixed bed through a sealed pipe, allowing the aminosilane liquid to flow through the fixed bed and fully contact with the resin inside; S3 receives the aminosilane liquid flowing out of the resin fixed bed, and obtains a crude aminosilane product whose chlorine content meets the electronic grade standard. The invention has simple process technology, strong stability, wide applicability, and is convenient and easy to operate, which can match the existing synthesis and purification process, and adopts a sustainably regenerated weakly alkaline anion exchange resin, which has excellent desalination effect and is economical and environmentally friendly.