39 results about "Chloride process" patented technology

The invention relates to a method for treating a residue obtained from the chloride process, wherein the residue comprises the components titanium dioxide, coke, an inert metal oxide, and an iron-containing component. Further, the invention refers to the use of this method to separate the components contained in said residue, and to the use of the separated components in the chloride process for obtaining titanium dioxide.

The invention relates to the technical field of chlorination-process titanium dioxide production, in particular to a chlorination-process titanium dioxide particle size control method which comprises the following steps: mixing hot oxygen, aluminum trichloride and preheated titanium tetrachloride in an oxidizing furnace, and reacting to obtain primary titanium dioxide particles; the pressure of the tail of the oxidizing furnace is controlled to be 180-400 kPa, so that the pressure of the furnace end is controllable within the range of 280-500 kPa, and target regulation and control of the particle size of the primary titanium dioxide particles within the range of 160-350 nm are achieved by controlling the pressure of the system. According to the method, the particle size of the primary titanium dioxide particles can be efficiently and quickly controlled within the range of 160-350 nm.

This invention discloses a method for recovering gallium-vanadium enriched material from gallium-vanadium-containing solid waste. The method includes: mixing the gallium-vanadium-containing solid waste with waste acid, stirring and leaching under heating conditions to obtain a slurry; wherein the waste acid is selected from waste hydrochloric acid, a byproduct of titanium dioxide extraction tail gas treatment during the chloride process, or waste sulfuric acid formed after drying chlorine gas with concentrated sulfuric acid during the chloride process; adding a neutralizing agent to the slurry to adjust the pH value to 0.3±0.1, filtering to obtain a first filtrate; adding a reducing agent to the first filtrate to reduce the trivalent iron and pentavalent vanadium in the solution, filtering to obtain a second filtrate; adjusting the pH value of the second filtrate to 3.8-4.5 with an alkaline precipitant to carry out a precipitation reaction, and obtaining gallium-vanadium enriched material after solid-liquid separation. This invention achieves simultaneous enrichment of gallium and vanadium, simplifying the process flow, reducing operational difficulty and production costs, while obtaining high-grade gallium-vanadium enriched material.

The invention relates to a preparation method of a glass fiber reinforced modified plastic titanium dioxide pigment. The method comprises the following steps: producing a rutile type titanium dioxide primary product by adopting a chlorination process, and pulping to prepare slurry; adjusting the pH value by using inorganic acid or alkali, adding a silane coupling agent for curing within a certain time, adding high-molecular siloxane for curing, and curing the cured slurry to form a layer of uniform and transparent siloxane elastomer on the surface of titanium dioxide; and adding a silane coupling agent through steam powder to finally form the product. The titanium dioxide pigment prepared by the method not only has excellent covering power, whiteness, weather resistance and the like of titanium dioxide, but also has the characteristics of low hardness and low plastic product processing difficulty of zinc sulfide, and is suitable for being used in products with high weather resistance requirements of glass fiber reinforced modified plastic outdoor systems.

This invention discloses a causal modeling optimization method, electronic device, and storage medium for the chloride process titanium dioxide production process based on a neural network surrogate model. The method includes acquiring and normalizing preprocessing data of the chloride process titanium dioxide production process; using recursive feature elimination based on cross-validation to obtain confounding factor features strongly correlated with the target output; training a surrogate model using the obtained feature data to predict the potential effects of each manipulated variable on the target output; and calculating the causal benefits through the potential results output by the surrogate model. This invention reduces the computational cost of causal modeling for complex chloride process titanium dioxide production processes, and can efficiently evaluate the causal benefits of manipulated variables when the system model is unclear or system parameters are lacking, providing a scientific basis for auxiliary decision-making and fault diagnosis in the chloride process titanium dioxide production process.

This invention relates to the field of pigment preparation, specifically to a method for preparing highly conductive titanium dioxide using the chloride process. The method includes: reacting oxygen and titanium tetrachloride with an oxidation reaction to generate titanium dioxide particles, which are then introduced into a cooling conduit. A preheated coating agent is added for a coating reaction and slurry preparation. The slurry temperature is adjusted to 60-75°C and the pH to 2-3, and a phosphate-containing compound is added. The slurry temperature is adjusted to 80-90°C, and a sodium aluminate solution and an alkaline solution are added to adjust the pH of the slurry to 9.5-10.5, followed by a first homogenization treatment. A tin chloride solution and a sodium aluminate solution are added, and the pH of the slurry is adjusted to 7.5-8.5, followed by a second homogenization treatment. The pH of the slurry is adjusted to 4.5-5.5, followed by a third homogenization treatment. The pH of the slurry is adjusted to 5.5-6.5, followed by a fourth homogenization treatment. This method is low-cost, simple, and suitable for large-scale production, producing conductive titanium dioxide with excellent performance.

A device and method for efficient clean utilization of fluor carbon cerium ore double chlorination method, relate to the field of rare earth comprehensive utilization and recovery, the device is composed of a first continuous packing bed, pipeline device; second continuous packing bed; third continuous packing bed; first screw propelling type condenser; second screw propelling type condenser. Rare earth concentrate is chlorinated with aluminum chloride, carbon monoxide and chlorine gas generated in the first and second continuous packing beds in the third continuous packing bed. Chlorinated rare earth, aluminum fluoride and alkaline earth metal chlorides generated by chlorination reaction remain in the chlorination slag in solid form, and titanium tetrachloride, silicon tetrachloride and iron chloride leave the chlorination furnace in gaseous form. The gaseous chlorination products are condensed and recovered by the screw propelling type condenser. The solid phase products are separated by water immersion to obtain single rare earth chloride. The present application realizes the comprehensive utilization of rare earth elements and associated elements such as titanium, fluorine, silicon and iron in fluor carbon cerium ore, and no acid and alkali waste liquid and wastewater are generated in the reaction process, which has good environmental benefits.

The invention relates to a preparation method of slurry with high purity and high titanium dioxide content. The method comprises the following steps: carrying out oxidation reaction by taking semi-finished titanium dioxide produced by a chlorination process and refined titanium tetrachloride subjected to vanadium removal and silicon removal as raw materials; in the oxidation reaction, no reaction auxiliary agent is added, and crystal form transformation is realized only by reaction temperature, pressure and retention time; zirconium beads are added into the reacted titanium dioxide gas-solid mixture, heat exchange cooling is promoted, and the particle size and the temperature are controlled; separating by a bag filter, adding water or desalted water into the collected titanium dioxide, pulping, properly dispersing, filtering and washing, and removing soluble metal salt and other impurities; adding desalted water for pulping after washing and filter pressing, controlling the concentration of the pulp, adding a dispersing agent, a mildew preventive and a defoaming agent, and packaging. The chlorination process semi-finished product titanium dioxide and impurity-removed refined titanium tetrachloride are used as raw materials, impurities are reduced from the source, oxidation is free of auxiliaries, side reaction is avoided, purity is guaranteed, slurry conductivity is controlled through multi-round pulping and washing, and the requirement of the market for high-purity and high-titanium-dioxide-content slurry is met.

The invention discloses a method for preparing nano titanium dioxide by using chlorination process titanium dioxide waste acid. The method comprises the following steps: performing membrane separation and impurity removal on the titanium dioxide waste acid; selectively extracting Sc and V to obtain enriched liquid; selectively extracting iron ions in the enrichment liquid to obtain a titanium solution and a strip liquid; performing reverse osmosis concentration on the titanium solution to obtain a concentrated solution; performing microwave-assisted hydrolysis on the concentrated solution to obtain a precursor; the precursor is subjected to calcination treatment, and anatase type nano titanium dioxide is obtained; moreover, the particle size of the anatase type nano titanium dioxide is 10-100 nm, and the content of an anatase phase is greater than or equal to 80% by mass. According to the method, the titanium recovery rate is larger than 95%, rare metals such as Sc and V are synchronously recovered, and efficient recovery of resources is achieved; the nano TiO2 can be used in the fields of photocatalysis, new energy and the like, and the added value of the product is relatively high; the heavy metal content is low after waste acid treatment, the circular economy mode of treating waste with waste is achieved, and the method is environmentally friendly and has good popularization prospects.

Integrated processes and systems for the co-production of titanium dioxide and caustic soda. A chlor-alkali process is integrated with a chloride process of titanium dioxide production to produce both caustic soda and titanium dioxide. A chlor-alkali unit produces caustic soda, chlorine, and hydrogen. The chlorine produced in the chlor-alkali unit then serves as an input for a titanium dioxide production unit. Some or all of the hydrogen is combusted to generate the heat required for the titanium dioxide production unit, and / or used in other processes, such as a reducing agent in the production of direct reduced iron (DRI).

The application provides a method for controlling the particle size of titanium dioxide primary product in a chlorination process, which comprises the following steps: high-temperature O2 enters an oxidation reactor through a combustion chamber, and TiCl4 vapor enters the oxidation reactor through a TiCl4 feeding ring; the high-temperature O2 and the TiCl4 vapor react in a mixing reaction zone of the oxidation reactor to generate TiO2 powder; CsCl particles are sprayed into the oxidation reactor at the rear end of the feeding ring adjacent to the oxidation reactor; at least one magnetic field is applied to the mixing reaction zone and / or a cooling conduit, and the magnetic field parameters are set according to the target particle size of the titanium dioxide primary product. The application also provides a method for removing scars of an oxidation reactor for titanium dioxide in a chlorination process. The application also provides a device for controlling the particle size of titanium dioxide primary product in a chlorination process. The method of the application effectively solves the problem of scarring of the furnace wall from the rear end of the feeding ring to the high-temperature reaction core area of the oxidation reactor, and the average particle size of the titanium dioxide primary product produced reaches 180-260 nm, the purpose of optimizing the particle size distribution is achieved, and thus the quality of the titanium dioxide primary product in the chlorination process can be stabilized.

The invention relates to the technical field of metallurgy, in particular to an anosovite reconstruction method for a chlorination process titanium dioxide oxidation unqualified primary product and anosovite, and the reconstruction method comprises the following steps: step 1, dechlorinating the chlorination process titanium dioxide oxidation unqualified primary product to obtain a first mixture; 2, the first mixture and petroleum coke are mixed, ground and smashed, and a second mixture is obtained; 3, adding a solvent into the second mixture to obtain a third mixture; 4, the third mixture is subjected to heat preservation for a first time at the first temperature, and a melt is obtained; and step 5, cooling the melt to room temperature by adopting gradient cooling to obtain anosovite. According to the reconstruction method disclosed by the invention, the problems of resource waste and low grade rate caused by unqualified primary products produced due to factors such as starting and stopping in the current production process are effectively solved.

This invention belongs to the technical field of metal ion adsorption materials, specifically a method for preparing an adsorbent and a method for determining the soluble zinc content of raw materials used in the ammonia chloride process for producing electrolytic zinc. This invention modifies the surface of manganese dioxide with a thiourea-based silane coupling agent, grafting a silane coupling agent containing a thiourea structure onto the surface of manganese dioxide. The adsorption of lead, copper, and cadmium ions in solution is achieved using the manganese dioxide matrix and the thiourea-based silane coupling agent on the matrix surface, while effectively preventing the adsorbent from adsorbing zinc ions from the solution. When the adsorbent prepared by this invention is used to determine the soluble zinc content of raw materials used in the ammonia chloride process for producing electrolytic zinc, it exhibits a small testing error and can effectively improve the accuracy of soluble zinc content determination.

The invention relates to the technical field of chlorination process titanium dioxide production waste residue and waste gas recovery, in particular to a synergistic resource recovery method and system for FeCl2 waste residue and Cl2-containing tail gas. Comprising the following steps: S1, mixing FeCl2-containing waste residues with water and a dispersing agent to prepare slurry, so as to obtain FeCl2 slurry; s2, the Cl2-containing tail gas and FeCl2 slurry are subjected to countercurrent contact reaction, and FeCl3 slurry is obtained; s3, the FeCl3 slurry is subjected to impurity removal and filtration to obtain a FeCl3 solution, and then the FeCl3 solution is subjected to spray drying to obtain FeCl3. 6H2O microspheres; and S4, carrying out fluidized bed roasting on the FeCl3. 6H2O microspheres by using a mixed gas containing O2 and water vapor to obtain the alpha-Fe2O3 pigment, and recycling the released chlorine after adsorption and purification by a molecular sieve. According to the method, the chlorine element and the iron element can be efficiently recovered at the same time, the cyclic utilization rate of the chlorine element reaches 88%, and meanwhile high-alpha-phase iron oxide is obtained.

The invention relates to a preparation method of a titanium dioxide pigment for an automobile non-metal part coating, which comprises the following steps: pulping a rutile type titanium dioxide primary product produced by a chlorination process, adjusting the pH value to 9.0-9.5, adding an aqueous solution of sodium polyacrylate and potassium salt, and curing to obtain titanium dioxide dispersed slurry; adding a silicate solution in two steps, maintaining the pH value of the slurry by using an inorganic acid solution, and curing to form a compact silicon oxide film layer; continuously adding a magnesium salt solution at one time, adding a basic aluminate solution within 30-60 minutes, controlling the pH value by using an inorganic acid solution, and curing to form a magnesium-aluminum composite film layer; and continuously curing, washing with deionized water, filtering, drying, carrying out steam powder treatment, and adding a compound organic agent at an organic inlet of a steam powder conveying pipeline to obtain the product. The paint has the advantages of excellent weather resistance, low color paste viscosity, high storage stability and excellent film appearance performance, and meets the application requirements of automobile nonmetal part paint.

The application discloses a method for recycling chlorination method acidic wastewater and application, and belongs to the technical field of titanium dioxide, wherein a titanium / iron-based bimetallic framework is impregnated into thermally expandable catalytic microspheres by taking the thermally expandable catalytic microspheres as a carrier, high temperature of an acid leaching reaction is utilized to make the thermally expandable catalytic microspheres expand, and catalytic centers are exposed, so that the efficiency of the acid leaching reaction is improved. In the process of treating the chlorination method acidic wastewater, the thermally expandable catalytic microspheres expand when the acid leaching is carried out at high temperature, the volume of the microspheres is increased, the internal porosity is improved, the wrapped nanometer zero-valent iron active sites are exposed, efficient catalysis and chelation are facilitated, heavy metals in the acidic wastewater are removed, complex compounds are formed with calcium and magnesium in the acidic wastewater, the heavy metals are promoted to be separated from the titanium crystal lattice, and the existence of titanium ions ensures that the catalyst cannot replace titanium in the artificial rutile, and the purity of the artificial rutile is ensured.

The invention discloses artificial rutile as well as a preparation method and application thereof, and relates to the technical field of artificial rutile, the preparation method of the artificial rutile comprises the following steps: providing an acid leaching solution and a titanium-rich material; adding the acid leaching liquid and the titanium-rich material into a reaction kettle according to a ratio, and carrying out acid leaching reaction to obtain an acid leaching material; carrying out solid-liquid separation on the acid-leached material to prepare an artificial rutile semi-finished product and an acid-leached liquid; the artificial rutile semi-finished product is washed, dried and calcined, and artificial rutile is prepared; the acid leaching solution comprises sulfuric acid and an acid leaching post-solution. The content of TiO2 in the artificial rutile prepared by the preparation method of the artificial rutile can reach 92-95%, the impurity content is further reduced by 70%, the purity of the artificial rutile is far higher than that of the artificial rutile prepared by the prior art, and the artificial rutile can be used as a substitute for natural rutile and meets the requirements of producing sponge titanium and titanium dioxide by a chlorination process; meanwhile, the acid liquor can be recycled, and the social comprehensive benefits of environmental protection are achieved.

The invention belongs to the technical field of preparation of anhydrous aluminum trichloride, and particularly relates to a method and device for preparing anhydrous aluminum trichloride based on a low-temperature indirect chlorination method, and the method comprises the following steps: introducing chlorine gas into a molten medium material Me at 185-650 DEG C, so that the molten medium material Me and chlorine gas are subjected to chlorination reaction to generate chloride, then, AlCl3 is generated through a replacement reaction between the solid Al and chloride, aluminum chloride generated through the reaction is sublimated and enters a trap, and an anhydrous aluminum trichloride finished product is obtained after trapping; wherein the melting point of the medium material Me is 185-650 DEG C, the medium material Me can react with chlorine to generate chloride, and the chloride of the medium material Me can be subjected to replacement reaction with aluminum to generate metal or alloy of AlCl3; according to the method and the device for preparing the anhydrous aluminum trichloride based on the low-temperature indirect chlorination process, the aim of preparing the high-purity anhydrous aluminum trichloride with low cost, low energy consumption, low investment and high yield can be achieved.

The invention relates to the technical field of titanium dioxide, and discloses a granularity detection method of a titanium dioxide chloride primary product, which comprises the following steps: mixing the titanium dioxide chloride primary product with a sanding medium and a first aqueous solution containing a dispersant, and carrying out primary dispersion to form a first mixture; fully stirring the first mixture; taking a part of the sample from the stirred first mixture, pouring the sample into a second aqueous solution containing a dispersant, mixing, and carrying out secondary dispersion treatment by using ultrasound to obtain a detection sample; carrying out particle size detection on the detection sample by adopting a laser particle analyzer to obtain a detection result; wherein the dispersant concentration of the second aqueous solution is higher than that of the first aqueous solution. Aiming at the core problems of high viscosity and low dispersity of the chlorination process titanium dioxide primary product, the detection result is accurate and reliable and the data relevance is clear through the design of dispersing twice with a dispersing agent.

The invention discloses high-weather-resistance chlorination process titanium dioxide and a preparation method. The titanium dioxide comprises a titanium dioxide base material and a coating layer located on the surface of titanium dioxide, the coating layer at least comprises a compact silicon film layer, a zinc silicate film layer and a magnesium titanate film layer from inside to outside; the compact silicon film layer is formed by adding a soluble silicic acid source and a pH regulator into chlorination-process titanium dioxide-based material slurry and homogenizing; the pH value of the slurry is kept to be greater than or equal to 10.0 in the preparation process of the titanium dioxide-based material slurry by the chlorination method. The titanium dioxide provided by the invention has extremely high weather resistance, and can be used in scenes with relatively high weather resistance requirements, such as outdoors and the like.

The invention belongs to the technical field of resource utilization of industrial by-products and preparation of inorganic functional materials, and discloses a method for preparing high-purity magnesium metavanadate based on synergistic conversion of the industrial by-products. Ammonium metavanadate extracted from a chlorination process titanium dioxide byproduct hydrochloric acid, a thermal power plant magnesium desulfurization byproduct magnesium sulfite and an aluminum oxide process is used as a raw material, and the method sequentially comprises the following steps: dissolving ammonium metavanadate in hot water, and acidifying with the byproduct hydrochloric acid to obtain an acidic vanadium-containing solution; adding a byproduct magnesium sulfite under heating and stirring, carrying out a deep impurity removal reaction, and carrying out solid-liquid separation to obtain a purified solution; adjusting the pH value of the purified liquid to be nearly neutral to initiate a synthetic reaction; directional crystallization is carried out by adopting programmed cooling and combining seed crystal induction; and separating, washing and drying to obtain the high-purity magnesium metavanadate. According to the method, synergistic high-value utilization of three industrial byproducts is achieved, the process is simple, the cost is low, the method is environmentally friendly, the purity of the obtained product is larger than or equal to 99.2%, the crystal form is regular, and the method is suitable for catalysts or electrode materials.

The application discloses a method for preparing calcined seeds by adopting titanium oxychloride solution by-produced in chlorination method of titanium white, and comprises the following steps: S1. pulp is obtained by taking the filter cake after alkali washing, titanium oxychloride solution is added, pH is adjusted to 3.5-5, and slurry II is obtained; S2. the slurry II is heated to 55-65 DEG C at a rate of 0.3-0.5 DEG C / min, then hydrochloric acid solution is added, heating is carried out to boiling at a rate of 0.3-0.5 DEG C / min, after keeping boiling for 2-4 h, water is added to dilute to the titanium dioxide content of 90-120 g / L in the material, and calcined seeds are obtained. The method can realize the recycling of hydrochloric acid and TiO2 in the titanium oxychloride, and reduces the cost of waste water treatment; the application is simple in operation, short in technological process, and easy to realize industrial production.

The invention provides application of an aluminum trichloride production process to reduction of scabbing of an oxidation reactor in a titanium tetrachloride gas oxidation reaction process in a chlorination process titanium dioxide process. The system of the aluminum trichloride production process comprises an aluminum trichloride reactor; an aluminum feeding hole is formed in the upper part of the aluminum trichloride reactor, and a first feeding channel and a second feeding channel are respectively formed in the bottom of the aluminum trichloride reactor; and a gas regulation and control distribution plate is arranged in the aluminum trichloride reactor. According to the invention, the distribution of the feeding channels and the process of the aluminum trichloride generator are adjusted, titanium tetrachloride and chlorine in the aluminum trichloride generator are fully mixed, and meanwhile, the aluminum balls have the advantages of preventing blanking blockage and having a large contact surface with chlorine, so that the temperature of the generator is more stable and controllable, and high stability and high reaction rate of operation of the generator are realized. The preparation difficulty is not high, the stability of the oxidation reactor is greatly improved, and obvious economic benefits can be brought by popularization and application in the chloridized titanium dioxide industry.

The invention belongs to the technical field of preparation of anhydrous aluminum trichloride, and particularly relates to a production device for preparing anhydrous aluminum trichloride based on a low-temperature indirect chlorination method, which comprises: a reaction furnace body, which is divided into an upper aluminum accommodating cavity and a lower medium accommodating cavity by a pore plate; the external temperature control device is used for regulating and controlling the temperature of the reaction furnace body; the solid aluminum material is placed in the aluminum containing cavity, the molten medium material is placed in the medium containing cavity, and the filling amount of the medium material is larger than the volume of the medium containing cavity, so that part of the molten medium material overflows the pore plate and makes contact with the solid aluminum material, and a micro-reaction area is formed on the upper side of the pore plate; the height ratio of the micro-reaction area to the medium accommodating cavity is (0.1-0.8): 1; the production device for preparing the anhydrous aluminum trichloride based on the low-temperature indirect chlorination method is simple in structure, the reaction process can be well controlled, and the prepared product is high in purity and white.

The invention discloses a titanium dioxide production process analysis method, relates to the technical field of artificial intelligence, and aims to solve the problem of low credibility of cause and effect evaluation caused by data defects in a chlorination process titanium dioxide production process in the prior art. Forming a production process data set; s2, correcting or complementing abnormal features or missing samples in the production process data set by using a graph enhancement strategy; and S3, constructing a causal reasoning model based on the original data set and the graph-enhanced data set, performing multi-model fusion decision through a covariance cross fusion strategy, and evaluating the causal effect of the change of the control parameters in the reaction process on the product parameters. According to the method, the accuracy of causal effect evaluation is remarkably improved through a graph data enhancement and causal reasoning fusion framework.

The invention discloses a device and method for controlling the particle size of titanium dioxide generated by a chlorination process, and the device comprises an oxidation reactor used for converting titanium tetrachloride into rutile type titanium dioxide; an inlet of the growth zone is connected with an outlet of the oxidation reactor, and the growth zone is used for controlling the nucleation number and growth time of rutile titanium dioxide so as to obtain titanium dioxide particles with a target particle size; an inlet of the cooling guide pipe is connected with an outlet of the growth area, and the cooling guide pipe is used for cooling the titanium dioxide particles. According to the scheme provided by the invention, the average particle size of the titanium dioxide chloride primary product is controllable in a range of 180-280nm, and in the process of controlling the particle size of the primary product, the average retention time of TiO2 particles in a high-temperature area is controlled without changing any raw and auxiliary material process control parameters. The additive KCl in the original process can be specially used for adjusting the particle size distribution of the primary product, AlCl3 is also specially used for controlling the rutile conversion rate, and excessive adjustment is not needed, so that the particle size distribution of the TiO2 primary product is more uniform.

The invention relates to a method for recovering 1, 2-dichloroethane in polyvinyl chloride (PVC) production by an ethylene chlorination process, which comprises the following steps of: treating a high-boiling residue after the PVC production by the ethylene chlorination process by a first-stage heating kettle, and distilling out a high-value component rich in the 1, 2-dichloroethane; distilled materials of the first-stage steam outlet and the second-stage steam outlet are used as feeding materials of the rectifying tower, 1, 2-dichloroethane is extracted from the top of the rectifying tower, part of tower kettle products are extracted from a tower kettle of the rectifying tower, and the other part of tower kettle liquid is returned to a high-boiling-point substance raw material inlet of the first-stage heating kettle; when the residual liquid amount of the first-stage heating kettle is lower than 20% wt, a valve between tower bottoms and a high-boiling-point material inlet of the first-stage heating kettle is opened, the tower bottoms flow back to the first-stage heating kettle, when the materials in the first-stage heating kettle can be freely stirred, the valve is closed to stop the tower bottoms from flowing back to the first-stage heating kettle, a conveying valve is opened, and the materials in the first-stage heating kettle are conveyed to the second-stage heating kettle; the materials are conveyed into a second-stage heating tank; jelly-shaped waste is discharged from the solid discharging port. The defect that in the prior art, a small amount of a high-boiling-point substance mixture is recycled or directly treated as dangerous waste is overcome.

The invention discloses a water-based paint and a preparation method of high-whiteness chlorination process titanium dioxide, the water-based paint comprises titanium dioxide, and the titanium dioxide is prepared by the following steps: by taking a rutile type titanium dioxide primary product as a raw material, sequentially carrying out pulping dispersion treatment to obtain titanium dioxide slurry and carrying out inorganic coating treatment to obtain an inorganic coating solution; carrying out suction filtration and washing treatment to obtain a filter cake, carrying out organic coating treatment to obtain a titanium dioxide preparation, and carrying out airflow crushing treatment to finally obtain a titanium dioxide product. The water-based paint and the preparation method of the high-whiteness chlorination-process titanium dioxide can be widely applied to the field of water-based paint, the application whiteness and covering power of the product can be effectively improved through dispersion pulping, inorganic coating, organic coating and airflow pulverization treatment, and the conventional and application indexes of the product can reach the level of high-quality titanium dioxide for the water-based paint.

The invention discloses a method for comprehensively utilizing organic silicon wastewater and fused salt chlorination waste fused salt, which comprises the following steps: S1, carrying out water leaching on the fused salt chlorination waste fused salt by adopting the organic silicon wastewater, and then carrying out solid-liquid separation to obtain water leaching residues and water leaching liquid; s2, carrying out nanofiltration treatment on the water immersion liquid to obtain nanofiltration concentrated liquid and nanofiltration clear liquid; s3, neutralizing the nanofiltration concentrated liquid by using a calcium-containing alkaline substance, neutralizing the nanofiltration clear liquid by using a sodium-containing alkaline substance, and respectively carrying out solid-liquid separation to obtain a solid-phase product and a liquid-phase product; and S4, concentrating and crystallizing the liquid phase products respectively. The organic silicon wastewater and the chlorination process waste fused salt are comprehensively treated, high-purity ferric hydroxide, calcium chloride and sodium chloride are obtained, and efficient treatment of the organic silicon wastewater and efficient recycling of chlorination process waste fused salt ions are achieved.