74 results about "Chloride salt" patented technology

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 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.

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 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.

This invention provides a method for synthesizing sodalite from 4A zeolite and simultaneously solidifying radioactive waste salts in situ, belonging to the field of radioactive waste salt solidification treatment technology in the dry reprocessing of spent fuel. The invention involves mixing 4A zeolite powder, radioactive waste salts, alkali metal chloride salts, and a dispersant at a specific liquid-to-solid ratio, followed by heating and drying to obtain a solidification precursor. The precursor is then ground, sieved, and sintered at temperatures not exceeding 900°C to obtain a solidified sodalite body. The method provided by this invention features low energy consumption, simple operation, low 4A zeolite usage, high radioactive waste salt coating rate, and high radioactive element fixation. The synthesized solidified sodalite body exhibits strong thermal stability and high mechanical hardness, with a normalized leaching rate of less than 5 x 10⁻⁶ after soaking in water at 90°C for 28 days. ‑ 4 g / (cm 2 ·d) The sodalite solidified body of the present invention can be geologically stored for a long time, effectively reducing the risk of migration, diffusion and leakage of radioactive materials.

The invention relates to the technical field of building materials, and discloses a hydrophobic modification method of chlorine salt polluted recycled aggregate and a preparation method of chlorine-sealing rib-protecting recycled concrete applying the hydrophobic modification method. The hydrophobic modification method of the chlorine salt-polluted recycled aggregate comprises the following steps: dipping the chlorine salt-polluted recycled aggregate in a silane emulsion diluent, taking out the chlorine salt-polluted recycled aggregate, and airing the chlorine salt-polluted recycled aggregate to complete hydrophobic modification of the chlorine salt-polluted recycled aggregate. Compared with unmodified recycled aggregate, the chlorine salt polluted recycled aggregate modified by the method provided by the invention has the advantages that the hydrophobic capacity is better, and the dissolution amount of water-soluble chloride ions is lower. The invention further discloses a preparation method of the chlorine-sealing rib-protecting recycled concrete, the chlorine-sealing rib-protecting recycled concrete comprises the following components: 300-500 parts of cement, 600-700 parts of sand, 1000-1100 parts of hydrophobic modified recycled aggregate and 1-3 parts of a water reducing agent, and the water-cement ratio is controlled to be 0.35-0.55. The method has the advantages that the durability of the recycled concrete member prepared from the chlorine salt polluted recycled aggregate is enhanced, and the utilization rate of the chlorine salt polluted recycled aggregate is increased.

The application discloses a movable assembled construction sand purification device and system, and belongs to the field of construction sand purification. The sand cleaning equipment is integrated into movable modules according to different functions, and the modules are combined according to process requirements. When used, the modules can be combined, and part of the modules can be reused. Various functional devices are respectively integrated and installed in a box, the box can be transported to a use site by a transport tool, and can be used after unloading and hoisting. Different combination modes can be adopted according to different properties of sand, such as machine-made sand, sea sand or river sand, to form a purification system. The purification system can effectively remove the edges and corners of machine-made sand, needle-shaped sand and weathered layers on the surface of sand particles, effectively remove the chloride salt (chloride ion content can reach 0.000% to 0.002%) and other harmful substances of sea sand, reduce the sea sand into the state of river sand before entering the sea, and can be safely used like river sand, so that the reinforcement corrosion and the deterioration of concrete are avoided.

A system for wastewater treatment employing in-situ cleaning of electrodes, comprising: at least one reactor for treating wastewater, said wastewater comprising chloride salts (sodium chloride, potassium chloride, calcium chloride, etc.) with a chloride concentration between 500 mg / L to 5,000 mg / L; and a controller for controlling the current supplied to the reactor by controlling the electrode active area and / or current density, such that the total amount of aqueous free chlorine produced during the wastewater treatment requires the addition of a certain amount of sodium bisulfite determined experimentally to produce a treated wastewater with a concentration of hydrochloric acid between 500 mg / L and 5,000 mg / L and a pH less than or equal to 4. After the addition of sodium bisulfite in the treated wastewater, the wastewater is recirculated back into the reactor. This ensures in-situ cleaning of the electrodes within the electrochemical reactor without the need for any additional equipment.

This application discloses an apparatus and method for preparing Ti3O5 powder materials. Belonging to the field of oxide functional powder material preparation technology, the method utilizes TiO2 powder as raw material, sodium chloride-potassium chloride-calcium chloride as electrolyte, zinc and / or tin as cathode, and a graphite rod as anode. A sandwich-type electrolysis system of "zinc-tin-TiO2 powder-chloride salt" is constructed through density differences to directly electrolyze TiO2 powder to prepare Ti3O5 powder materials. This apparatus and method significantly shorten the traditional Ti3O5 powder material preparation process, and the zinc-tin cathode and electrolyte can be reused, greatly reducing costs. The electrolysis process involves few side reactions, is environmentally friendly, and emits no harmful substances, resulting in high-purity Ti3O5 powder materials.

This invention discloses a corrosion testing method adapted to the corrosion intensity of domestic passenger vehicles in the field of automotive material corrosion evaluation technology. The method involves washing, wiping, drying, scratching, masking, and weighing the passenger vehicle sample before placing it in a cyclic corrosion test chamber. A composite corrosion solution is then prepared using deionized water, sodium chloride, calcium chloride dihydrate, magnesium chloride hexahydrate, anhydrous sodium sulfate, sodium nitrate, ammonium chloride, sodium bicarbonate, and iron-manganese-sulfur-nitrate-silicon complex corrosion-promoting microspheres. Subsequently, the sample undergoes a series of cyclic treatments including salt spray deposition, wet heat penetration, hot air drying, and room temperature rehumidification. The corrosion performance of the corroded sample is then tested. This invention can simulate the chloride salt, wet heat, and alternating wet-dry corrosion environments experienced by domestic passenger vehicles in service, improving the adaptability and discriminative power of corrosion intensity evaluation.

The invention discloses cement slurry for reinforcing and leaking stoppage in a drilled hole and a preparation method of the cement slurry, and relates to the technical field of geological drilling engineering.The cement slurry is prepared from, by weight, 60-70 parts of sulphoaluminate cement, 20-30 parts of Portland cement, 3.5-5.5 parts of a composite early strength agent, 2-4 parts of an anti-freezing and anti-leakage agent and 0.3-0.5 part of a polycarboxylate superplasticizer. 0.1 to 0.2 part of polyacrylamide, and 18 to 22 parts of water; the composite early strength agent is a mixture of chlorine salt and calcium formate; the anti-freezing and anti-leakage agent is a mixture of glycerol and nano silica fume. The cement slurry has a very good leakage-proof plugging effect, solves the problem of slurry loss during leakage, is controllable in solidification time, low in maintenance energy consumption, free of external heating and complex heat preservation, controllable in heat release, and capable of avoiding local overheating cracking, avoiding the risk of slurry freezing in a low-temperature environment, and ensuring normal hydration.

The invention discloses a mechanical separation and resource utilization method for household garbage incineration fly ash. The method comprises the following steps: firstly washing and separating the household garbage incineration fly ash, then pickling and separating, and respectively collecting a soluble salt-containing first liquid phase obtained by washing and separating, a lead-containing second liquid phase obtained by pickling and separating and dioxin-enriched solid-phase fly ash; mixing the second liquid phase with the first liquid phase to enable the pH value of the mixed solution to be 8-9, then adding sulfide to enable the sulfide to completely react with Pb < 2 + > in the mixed solution to generate PbS precipitate, and separating to obtain lead concentrate and a third liquid phase containing chlorine salt; calcium chloride, potassium chloride and sodium chloride are efficiently recycled from the third liquid phase based on nanofiltration and flotation separation, the content of the potassium chloride and the sodium chloride obtained through centrifugation reaches up to 99%, the potassium chloride and the sodium chloride can be used as industrial-grade products, and the overall resource utilization degree of the household garbage incineration fly ash can be improved.

This invention relates to a method for preparing membrane materials, specifically a method for preparing hollow fiber composite membranes containing void structures. Addressing the characteristics of hollow fiber carriers, this invention employs an organic phase solution flowing into the carrier for interfacial polymerization. To address the issue of chloride ion loss in the later stages of polymerization, chloride salts such as lithium chloride or sodium chloride are added to the organic phase solution. These chloride salts replenish the chloride ions lost during silver chloride synthesis and act as phase transfer agents to promote the interfacial polymerization reaction between the two phases, ensuring the compactness of the polyamide.

A kind of foundation bottom plate protection system and method in strong corrosion geological environment, system includes foundation bottom plate, deep well cylinder, main pipeline, branch pipeline, pumping device, the foundation bottom plate is fixed on foundation by anti-floating anchor rod, the main pipeline is arranged in the foundation, the main pipeline both sides are evenly distributed with several branch pipelines, the branch pipeline top end is evenly distributed with water-permeable hole, one end of the main pipeline is closed, the other end is connected with deep well cylinder, the deep well cylinder is embedded in the soil of the structure to be built side, the top end of deep well cylinder is exposed to ground, the pumping device is connected with deep well cylinder, the deep well cylinder is equipped with the treatment mechanism for corrosive groundwater;Method includes forward treatment mode and reverse treatment mode.The application can improve the corrosion and waterproof effect by improving the foundation bottom plate structure, fundamentally avoid the erosion of building structure by high chloride salt and sulfate in geology.

The invention relates to the technical field of intelligent control of a fly ash chlorine salt separation system, in particular to an intelligent control method for the fly ash chlorine salt separation system and application of the intelligent control method for the fly ash chlorine salt separation system. Operating parameters are dynamically adjusted in combination with a dechlorination process energy consumption optimization model, separation proportions and separation conditions of chlorine salts with different purities are output by means of a chlorine salt resource grading separation prediction model, real-time monitoring feedback is performed through a fly ash pollutant cooperative control analysis platform, and a parameter dynamic adjustment closed loop is formed; the system comprises a parameter acquisition unit, an optimization operation unit, an energy consumption regulation and control unit, a grading separation prediction unit, a cooperative monitoring feedback unit and a closed-loop optimization unit, and deep fusion and cooperative linkage of all modules are achieved. According to the invention, systematicness and accuracy of chlorine salt separation are improved, and efficient promotion of chlorine salt separation and pollutant cooperative control is realized.

The invention discloses a method for separating germanium from a waste optical fiber preform, and belongs to the technical field of metallurgy and chemical industry. According to the method, waste optical fiber preform powder and chlorine salt are mixed and pelletized, then pellets are roasted in an inert atmosphere, the chlorine salt can destroy a germanium-oxygen tetrahedral structure formed by entering quartz lattices in an isomorphic form, germanium is released from the quartz lattices, and then the germanium reacts with chloride generated after decomposition of the chlorine salt to generate volatile GeCl4. After the raw materials are subjected to chloridizing roasting, germanium and part of impurity metals generate volatile chlorides, and after roasting slag is subjected to chloridizing roasting, the raw materials for recycling high-purity quartz are obtained. According to the method, germanium in the waste optical fiber preform is fully recycled, and efficient separation of germanium is achieved.

The utility model relates to the field of potassium chloride collection, in particular to equipment for recovering potassium chloride in seaweed, which comprises a drum screen, a shredder, a belt dryer, a vibrating screen, a disc screen, a salt tank, a plate filter and a turnover tank. Seaweed particles on the vibrating screen are conveyed into the disc screen through a ton bag, the salt tank, the plate filter and the turnover tank are connected through pipelines, impurities in raw material seaweeds are separated through the rotary screen, the seaweeds are shredded into the seaweed particles through the shredding machine, the seaweed particles are dried through the belt dryer, and the dried seaweed particles are subjected to impurity removal through the vibrating screen. The disc screen removes impurities of the seaweed particles again, auxiliaries added through the feeding pipe are mixed in the salt tank and then are pumped into the plate filter, a filter layer is formed in the plate filter, the plate filter extracts a solution which is 1 / 4 away from the upper portion of the bottom of the salt tank to be filtered, and the turnover tank collects the filtered potassium chloride salt solution.

The present invention relates to a method for obtaining a bath of molten chloride salts comprising at least one actinide in which the oxidation state and / or degree of oxidation of said at least one actinide are predetermined according to the intended application, comprising the following steps: (a) establishing, for said at least one actinide, its potential-oxoacidity diagram at a given temperature T in a bath of molten chloride salts, (b) from the potential-oxoacidity diagram established in step (a), defining the potential-oxoacidity domain in which said at least one actinide is in the predetermined oxidation state and / or degree of oxidation, (c) selecting at least three different compounds which are different from said at least one actinide setting, at the temperature T, the potential and oxoacidity of the bath of molten chloride salts in the domain defined in step (b), it being possible for one of said at least three compounds to be the chloride ion contained in the bath of molten chloride salts, then (d) introducing, into a bath of molten chloride salts comprising said at least one actinide at the temperature T, said at least three compounds selected in step (c). The present invention relates to the use of various mixtures or compositions in the preparation of a nuclear fuel, during its operation or else during its reprocessing.

This invention discloses a ternary chloride salt thermal storage material that balances thermal storage performance and corrosion resistance, along with its preparation method. The thermal storage material is obtained by adding metal and metal oxide nanoparticles to a ternary molten salt composed of sodium chloride, potassium chloride, and magnesium chloride. The thermal storage performance of the ternary molten salt is enhanced through the interaction between the nanoparticles and the chloride salt; simultaneously, the interaction between the nanoparticles and the corrosive surface of the alloy pipe forms a corrosion-resistant layer or consumes corrosive components, achieving automatic corrosion prevention; and new nanoparticles can be replenished in the thermal storage tank as needed based on their consumption. The ternary chloride salt thermal storage material prepared by this invention exhibits excellent thermal storage performance, strong corrosion resistance, and low price; moreover, its preparation method is simple, efficient, low-cost, and convenient to operate, effectively overcoming the shortcomings of traditional molten chloride salts, such as poor thermal performance and strong corrosivity, and can be used as a high-temperature thermal storage / heat transfer medium in concentrated solar power generation systems.

The application discloses a method for removing arsenic and enriching noble metals from anode slime, and comprises the following steps: mixing ground anode slime with concentrated sulfuric acid, a carbonaceous reducing agent and a chloride salt to form a mixture, performing first roasting on the mixture to convert base metals in the anode slime into soluble salts and convert arsenic-containing phases into diarsenic trioxide; heating the mixture after the first roasting to perform second roasting, so that the diarsenic trioxide is volatilized to obtain calcined sand; and after the calcined sand is treated by acid immersion, filtering to obtain a base metal salt-containing solution and noble metal enrichment; the application can realize efficient volatilization and removal of arsenic in the anode slime, efficient removal of base metals and efficient enrichment of noble metals, wherein the removal rate of arsenic is greater than 98%, the removal rate of base metals is all greater than 90%, and the noble metals in the anode slime are hardly lost, and the application has the advantages of high arsenic removal rate, efficient noble metal enrichment, high recovery rate, simple operation and the like.

This invention relates to a method for promoting dechlorination and inhibiting calcium leaching from waste incineration fly ash, belonging to the field of municipal solid waste resource utilization technology. The method includes the following steps: 60-90% fly ash, 10-40% auxiliary materials, 0-5% additives, and 0-5% regulators are mixed evenly by mass percentage, then mixed with water at a solid-liquid ratio of 1:(2-3.5). The mixture is stirred hydrothermally at 120-200℃ and 0.5-1.5MPa for 1-5 hours. After cooling, solid-liquid separation is performed to obtain solid material and ash washing wastewater. This invention achieves complete leaching and separation of chloride salts in waste incineration fly ash. Simultaneously, the calcium in the fly ash reacts with the silicon and aluminum components in the auxiliary materials to form a calcium-silicon-aluminum mineral phase, thereby inhibiting the dissolution of calcium in the fly ash into the liquid phase and significantly reducing the treatment cost of fly ash desalination wastewater.

The invention belongs to the technical field of metallurgical engineering, and particularly relates to a hydrothermal cobalt ore wet leaching method. The method comprises the following steps: mixing the hydrothermal cobalt ore concentrate with a soluble chlorate solution, and adding acid to adjust the pH value to obtain concentrate pulp; adding an oxidizing agent into the concentrate pulp, heating, pressurizing, stirring and leaching, cooling, reducing pressure, separating to obtain a leaching solution and leaching residues, and removing impurities from the leaching solution to obtain a purified leaching solution; and adding an extracting agent into the purified leachate to extract cobalt, then carrying out reverse extraction to obtain a high-concentration cobalt solution, and carrying out precipitation and calcination to obtain cobalt oxide. According to the method, efficient directional dissolution of cobalt is achieved through high Cl <->, low pH, controlled oxidation-reduction potential Eh and medium-high temperature pressurization, high-purity cobalt products are prepared by combining harmless solidification of iron and arsenic and extraction-reverse extraction-cobalt precipitation-calcination of cobalt, dissolution of impurities such as iron and arsenic is inhibited, and the cobalt leaching process which is low in consumption, efficient and environmentally friendly is obtained.

The invention belongs to the technical field of nano material preparation, and discloses a graphene / high-entropy hydroxide nano composite material and a preparation method thereof.The preparation method comprises the following steps that 1, graphene oxide is added into deionized water and subjected to ultrasonic dispersion; 2, dissolving a plurality of metal nitrates or chlorides in the dispersion liquid containing the graphene oxide, and uniformly stirring to form a mixed solution; and 3, adding a mixed aqueous solution of sodium carbonate and sodium borohydride into the mixed solution, and carrying out stirring reaction at room temperature for a certain time to form the graphene / high-entropy hydroxide nano composite material. In the prepared nano composite material, excellent chemical bond combination can be formed between the graphene and the high-entropy hydroxide, and the size of the high-entropy hydroxide nano particles is extremely small, so that the high-entropy hydroxide nano particles can be used as an electrocatalyst and provide more active sites.

The application discloses a fly ash de-washing chloride salt intelligent control method and system based on primary water washing conductivity, relates to the technical field of fly ash treatment, and comprises the following steps: primary stirring water washing is performed on fly ash to be treated according to a fixed water-fly ash ratio, and primary water washing liquid is obtained; the conductivity value of the primary water washing liquid is detected; based on the conductivity value and a preset fitting formula, the chloride ion concentration of the primary water washing liquid is calculated, and the critical chloride ion concentration of tertiary water washing liquid is determined; the chloride ion concentration, the primary water washing water-fly ash ratio and the critical chloride ion concentration are input into a trained water consumption prediction model, the optimal water-fly ash ratio of secondary water washing and the optimal water-fly ash ratio of tertiary water washing are output, and the washing water flow of the secondary water washing unit and the tertiary water washing unit is regulated so that the chloride content of the water washing residue after the tertiary water washing is less than a preset content threshold. The application accurately calculates the optimal water consumption of secondary water washing and tertiary water washing and accurately regulates the water consumption, thereby realizing efficient utilization of water resources.

An aerosol antiperspirant composition that includes a liquid propellant and an antiperspirant concentrate. The concentrate includes a particulate active premix, a carrier, and a fragrance. The particulate active premix composition has a basic aluminum chloride salt of formula Al2(OH)3.778Cl2.222 to Al2(OH)5.048Cl0.952, an amino acid, an alkaline earth metal salt, and greater than 1% of an alkali metal salt and / or magnesium chloride.

The application provides a device for recycling mixed waste salt of sodium chloride and sodium sulfate, which comprises a mixed waste salt organic matter removal system, a low-chloride salt treatment system and a high-chloride salt treatment system connected to the discharge end of the mixed waste salt organic matter removal system respectively; the low-chloride salt treatment system comprises a low-chloride salt impurity removal system, a low-chloride salt evaporation crystallization system connected to the low-chloride salt solution outlet of the low-chloride salt impurity removal system, and a sodium sulfate refining system connected to the sodium sulfate crystal outlet of the low-chloride salt evaporation crystallization system. The application divides the mixed waste salt into low-chloride salt with high sodium sulfate content and high-chloride salt with low sodium sulfate content. The sodium sulfate refining system in the low-chloride salt treatment system can utilize the dissolution-crystallization balance principle and the physical entrainment balance principle of the sodium sulfate-sodium chloride-water ternary system to obtain high-quality sodium sulfate products, thereby simplifying the process, reducing the cost, improving the recovery rate of sodium sulfate, and obtaining relatively high-purity sodium sulfate products.

The present application relates to a kind of gold leaching high-salt wastewater zero discharge treatment process and system, gold leaching high-salt wastewater zero discharge treatment process includes wastewater pretreatment, multistage filtration, membrane concentration and evaporation crystallization process;Wherein, wastewater pretreatment is used to remove most of suspended solids, hardness substance and heavy metal ions in gold leaching high-salt wastewater;Multistage filtration is used to remove small particles and organic pollutants in gold leaching high-salt wastewater;Membrane concentration is used to concentrate treatment to gold leaching high-salt wastewater;Evaporation crystallization is used to evaporate crystallization to the concentrated gold leaching high-salt wastewater, make the chloridion and sulphate in it into solid miscellaneous salt;The wastewater quality after evaporation crystallization reaches gold leaching process system reuse standard.The present application can effectively solve the problem that existing gold leaching high-salt wastewater treatment process pollutant is not completely removed, energy utilization rate is low, economic benefit and environmental protection are poor.