52 results about "Ferric Oxide Red" patented technology

This invention belongs to the field of solid waste resource recycling technology in the metallurgical industry. It discloses a process for preparing iron oxide red and extracting titanium dioxide from high-iron red mud. The process involves mixing high-iron red mud with an alkaline agent, followed by water leaching to obtain a water-leached solution and a water-leached residue. The water-leached solution undergoes desilication and carbon removal treatment to obtain aluminum hydroxide and sodium carbonate solutions. The water-leached residue is then acid-leached with sulfuric acid; silicon is recovered as silica gel, while aluminum and iron enter the solution and undergo polymerization to prepare a water purification agent. The acid-leached residue is treated with a high-temperature heap leaching-water leaching process using concentrated sulfuric acid to achieve efficient dissolution and separation of titanium. The titanium-iron mixed solution is subjected to stepwise crystallization control, successively precipitating ferric sulfate and ferrous sulfate crystals, which are then pyrolyzed to generate high-purity iron oxide red. Finally, the mother liquor is subjected to titanium precipitation and pyrolysis to obtain titanium dioxide. This invention achieves efficient separation and high-value utilization of all components of iron, titanium, aluminum, and silicon in red mud. The process flow is rationally cyclical, resulting in high-value-added products with low energy consumption and no secondary pollution.

The present application relates to the technical field of steel plate surface treatment, and particularly relates to a weathering steel rust layer purple coloring treatment agent and a use method thereof, the coloring treatment agent is composed of pre-coloring agent and sealing coloring agent; the pre-coloring agent comprises: tannic acid 12-17 g / L, pH regulator 2.2-2.5 g / L, additive 0.05-0.08 g / L, and the rest is water; the sealing coloring agent comprises: chitosan 8-10 g / L, coloring agent 1.5-3 g / L, dispersing agent 2-5 g / L, and the rest is solvent; the coloring agent is at least one of iron oxide red and ultramarine purple. The coloring treatment agent is applied to the surface of the weathering steel covered with rust layer after natural rusting or after the rust layer is stabilized, so that the rust layer is colored, the surface of the weathering steel after treatment is purple, and has a good decorative appearance.

The utility model discloses a tool for scraping and cleaning materials after grinding of a grinding groove for iron oxide red production, which relates to the technical field of iron oxide red production and comprises a workbench, a grinding disc is fixedly mounted at the top of the workbench, a rotating ring is further rotatably mounted at the top of the workbench, and the rotating ring is rotatably sleeved outside the grinding disc. And a driving mechanism used for driving the rotating ring to rotate is arranged on one side of the workbench, a stand column is installed on one side of the top of the rotating ring, a pair of disassembling and assembling pieces used for fixing the stand column are arranged on the rotating ring, and a bearing plate is installed at the upper end of the stand column. By arranging the driving mechanism and the cleaning mechanism, the cleaning mechanism can be driven by the driving mechanism to rotate and clean in the grinding disc, materials on the inner wall of the grinding disc can be comprehensively scraped by the bottom scraping plate and the side scraping plate on the hanging bracket, and meanwhile, the scraped materials are conveyed into the dust collector through the dust collection panel and the ventilation pipe; and thorough cleaning of materials in the grinding disc is achieved.

The invention belongs to the technical field of ink-jet printing ink, and provides ink-jet printing inorganic ink for a soft porcelain material as well as a preparation method and application of the ink-jet printing inorganic ink. The ink-jet printing inorganic ink for the soft porcelain material comprises the following components in percentage by mass: 21-35% of an inorganic pigment, 13-20% of a dispersing agent, 1.7-5.2% of modified organic silicon resin, 0.19-0.52% of a curing agent and 43-59% of a solvent, the inorganic pigment is at least one of cobalt blue, copper chrome black, titanium chrome yellow, iron oxide red and titanium oxide white; the particle size D50 of the ink is smaller than or equal to 0.25-0.4 mu m, the viscosity is 10-15 mPa.s, the surface tension is 26-32 mN / m, and the PH is 8-8.5. The inorganic ink for ink-jet printing is relatively high in grinding efficiency, relatively good in rheological property, anti-settling stability and ink-jet printing performance, relatively good in adhesive force on soft porcelain, and especially more excellent in color fastness and color development stability on the soft porcelain.

The invention relates to the technical field of colored polyester POY, in particular to soft light special-shaped polyester POY and a production process thereof. The soft light special-shaped polyester POY is prepared from PET matrix resin and red master batches, the mass ratio of the red master batch to the PET matrix resin is 1: (4-5); the red master batch is prepared from PET matrix resin and surface modified iron oxide red; the content of the surface modified iron oxide red in the red master batch is 8.0-20.0 wt%. According to the invention, the iron oxide red pigment is subjected to surface modification treatment, the compatibility of the iron oxide red pigment and PET resin is improved, and the high-quality red soft-light profiled polyester with high color fastness and stable performance is obtained by optimizing and adjusting parameters such as raw material drying, extrusion temperature, mixer temperature, spinning manifold temperature, circular blowing cooling and winding speed in the production process.

The invention relates to the technical field of sculpture materials, in particular to an antibacterial sculpture material with self-repairing capability and a preparation method thereof, and the antibacterial sculpture material comprises a clay basic component, a reinforced fiber component and a functional modification component, the functional modification component is prepared from the following components in parts by weight: 2 to 3 parts of self-repairing microcapsules, 5 to 8 parts of antibacterial modified nano montmorillonite, 0.5 to 1 part of nanoscale titanium dioxide and 0.3 to 0.8 part of iron oxide red or iron oxide green. The prepared sculpture material has temperature-sensitive self-repairing, antibacterial, mildew-proof and color-adjustable properties, the mechanical property, weather resistance and processing suitability of the sculpture material are improved, and the requirements of sculpture creation and long-term storage in different scenes are met.

The purpose of this invention is to provide an apparatus and method for extracting iron from red mud and preparing ferric oxide red, belonging to the field of resource utilization technology. This invention uses hydrochloric acid to leach iron from red mud and then separates ferric chloride solution from the leachate through an extraction process. Subsequently, high-purity ferric oxide red is prepared through alkaline precipitation, washing, and calcination. By using the method of this invention, iron resources in red mud can be recovered, achieving the dual goals of resource utilization and environmentally friendly treatment.

The application discloses a kind of iron oxide red dyeing ceramic grinding wheel and its preparation process, wherein, iron oxide red dyeing ceramic grinding wheel includes the following components according to weight parts: abrasive 90-120 parts, ceramic binder 10-28 parts, iron oxide red 0.2-1 part, temporary adhesive 0.5~2 parts, and wetting agent 2~5 parts, the temporary adhesive is hydroxypropyl methyl cellulose, the wetting agent is polyquaternary ammonium salt aqueous solution, and the concentration of polyquaternary ammonium salt aqueous solution is 0.5%~5%.The application prevents the aggregation and sedimentation of iron oxide red particles by the electrostatic effect and physical barrier effect of polyquaternary ammonium salt, so that the stability of the whole mixed liquid system can be maintained for a long time, which is beneficial to the uniform dispersion of iron oxide red particles;hydroxypropyl methyl cellulose has strong water retention, which can avoid cracking and other problems caused by excessive temperature difference and rapid water evaporation during the heating and drying process of grinding wheel blank.

The invention discloses a method for preparing iron oxide red by using iron-containing electroplating waste acid liquid, and belongs to the technical field of electroplating waste liquid, the method comprises the following steps: 1, adding an iron source into acidic iron-containing electroplating waste liquid; then impurity removal treatment is carried out to remove interfering ions, and a high-content ferrous solution is obtained; step 2, diluting the high-content ferrous solution, adding an alkaline precipitator for neutralization, and adding a particle size retention agent which is a hyperbranched surfactant; introducing air to obtain precursor slurry; step 3, carrying out filter pressing and washing on the precursor slurry, and removing chloride ions and sodium ions to obtain a filter cake; dispersing the filter cake in water, adding a seed crystal, and roasting by adopting segmented temperature control to obtain iron oxide red; soluble sulfide and permanganate are compounded to remove impurities, a hyperbranched surfactant is used as a particle size retention agent, crystal nucleus agglomeration is inhibited through a steric hindrance effect, heterogeneous nucleation sites are provided, and crystal growth is guided in combination with segmented temperature control.

The invention discloses a waterproof breathable wall protection coating and a preparation method thereof, and belongs to the technical field of wall coatings. The problem that an existing outer wall waterproof coating is difficult to give consideration to breathability and waterproofness is solved. The coating comprises a primer, a floating coat and a finishing coat, the primer, the floating coat and the finish paint are respectively and independently prepared from silicone acrylic emulsion, styrene acrylic emulsion, bone glue, glutinous rice glue, nano aluminum oxide sol or nano aluminum oxide alcohol dispersion liquid, water, a dispersing agent, a coalescing agent, a defoaming agent, a thickening agent, clay filler, iron oxide red, wollastonite and hydrophobically modified bar-shaped filler; the PVC of the primer is larger than that of the CPVC, the PVC of the floating coat is approximately equal to that of the CPVC, and the PVC of the finishing coat is smaller than that of the CPVC. According to the waterproof and breathable wall protection coating, a trumpet-shaped structure with an inward opening is formed by utilizing a pigment volume concentration theory, and an aluminosilicate hydrophilic surface is formed on the surface of the coating, so that water in a wall can be quickly evaporated, and external water can be effectively prevented from entering the wall.

The application discloses a kind of gas mist type water-based self-repairing coating and its preparation method and application, the water-based self-repairing coating, by weight parts, including the following components: by weight parts including the following components: deionized water 10-30 parts, bactericide 0.1-0.5 parts, defoaming agent 0.1-0.5 parts, dispersing agent 1-2 parts, anti-settling agent 1-3 parts, anti-flash rust agent 0.5-1 part, modified zinc phosphate 5-10 parts, aluminum tripolyphosphate 5-15 parts, iron oxide red or iron titanium powder 5-10 parts, double-coated modified graphene microcapsule 10-35 parts, water-based nano fluorocarbon resin 20-40 parts, film-forming aid 1-5 parts, pH regulator 0.1-0.5 parts, propellant 1-5 parts.The gas mist type water-based self-repairing coating of the application can have high self-repairing width under normal temperature environment under the premise of reaching weather resistance and corrosion resistance, and has good environmental protection performance, is convenient to use by aerosol type packaging, and is more suitable for outdoor site construction.

The application discloses an inorganic copolymer anticorrosive paint and a preparation method thereof, and relates to the technical field of paints. The inorganic copolymer anticorrosive paint comprises the following raw materials in parts by weight: 20-30 parts of silica sol, 8-15 parts of sodium hydroxide, 30-45 parts of metakaolin, 8-20 parts of quartz sand, 15-25 parts of water, 0.3-2 parts of sodium polyacrylate, 0.2-3 parts of polydimethylsiloxane emulsion, 5-12 parts of modified nanometer titanium dioxide, 6-10 parts of modified epoxy resin, 10-25 parts of hydroxyethyl methacrylate, 5-10 parts of zinc phosphate, 3-8 parts of aluminum tripolyphosphate and 2-6 parts of red iron oxide. The inorganic copolymer anticorrosive paint has scientific raw material proportioning, and the anticorrosive performance is enhanced through the modified nanometer titanium dioxide and the epoxy resin. In the preparation, step-by-step feeding and ultrasonic dispersion are adopted to ensure that the materials are uniform, and vacuum degassing and nitrogen protection are adopted to improve the stability. The silica sol, the zinc phosphate and other components have a synergistic effect, a dense coating is formed, the anticorrosive performance is high, the construction performance is good, and the inorganic copolymer anticorrosive paint is suitable for various scenes.

The invention relates to the cross technical field of new energy materials and waste acid regeneration, and provides a device and method for preparing iron oxide red through pure iron or pure iron gas cutting slag and integrated electromagnetic induction spray roasting-regenerated acid circulation and application, and the method comprises the steps that pure iron or pure iron gas cutting slag is added into a regenerated hydrochloric acid solution, filtering is conducted after the operation is finished, the concentration of Fe < 3 + > is adjusted to 180-220 g / L, HCl is adjusted to 5-8 wt%, and a mixed solution is obtained; 0.1-0.3 wt% of a dispersing agent is added into the adjusted solution, then spraying and oxygen reaction are carried out, iron oxide red and hydrogen chloride are generated, the temperature ranges from 550 DEG C to 650 DEG C, the pressure ranges from-300 Pa to-600 Pa, the oxygen content ranges from 5 vol% to 10 vol%, and the reaction time ranges from 3 s to 8 s; spraying hydrogen chloride through desalted water to form regenerated hydrochloric acid and returning to the first step. The method not only solves the problem of low additional value of existing pure iron gas cutting slag treatment, but also solves the problem of low purity of iron oxide red caused by a traditional method for preparing iron oxide red.

The application discloses a two-component water-based high-temperature-resistant anticorrosive paint as well as a preparation method and application thereof, and belongs to the technical field of paints. The paint A component provided by the application simultaneously adds methylphenyl silicone resin and water glass with a modulus of 5.0-8.0, and zinc phosphate, kaolin, iron oxide red, aluminum oxide and a thickening agent are added, and meanwhile, the mass percentage range of silane coupling agent in the A component to zinc phosphate, kaolin, iron oxide red and aluminum oxide in the A component is limited, so that excellent dispersibility and suitable viscosity between the components can be realized, the adhesion and the anticorrosion performance of the coating are ensured, further introduction of glass powder can improve the high-temperature resistance of the paint. In addition, the preparation method of the paint is simple in operation and is beneficial to actual production.

The invention relates to the technical field of water-based paint, and particularly discloses high-solid-content water-based paint and a preparation process thereof. The high-solid-content water-based paint is prepared from the following raw materials in parts by weight: 7 to 20 parts of deionized water, 30 to 50 parts of high-solid-content water-based resin, 0.1 to 1 part of dispersing agent, 0.1 to 0.6 part of defoaming agent, 5 to 10 parts of anti-rust pigment, 10 to 30 parts of mica powder, 5 to 20 parts of iron oxide red, 10 to 30 parts of barium sulfate, 1 to 5 parts of coalescing agent, 0.1 to 0.5 part of flatting agent, 0.1 to 0.8 part of wetting agent and 0.5 to 2 parts of thickening agent mixed paint. According to the water-based paint, 7-20 parts of deionized water and 30-50 parts of high-solid-content water-based resin are adopted as a core matrix, a dispersing agent, a defoaming agent, an anti-rust pigment, an extender pigment and a functional additive in a specific proportion are matched, and the deionized water is added in two stages, so that the solid content of the prepared water-based paint is greatly increased, and the situation that the solid content of existing water-based paint is low is effectively solved.

The application belongs to the technical field of ceramic daily necessities, and particularly discloses a ceramic glaze, which comprises the following raw materials in parts by weight: 27-33 parts of frit, 18-22 parts of quartz, 12-15 parts of calcite, 12-20 parts of zinc oxide, 5-8 parts of Longyan soil, 2-4 parts of calcined talc, 17-20 parts of calcium phosphate, 10 parts of titanium white, and 8-10 parts of red iron oxide. The application provides a ceramic glaze and an application method of the ceramic glaze in brown-bottom yellow crystal point ceramic products. Through control of the raw material composition of the ceramic glaze and process control of the preparation process of the ceramic product, a ceramic product with a deep brown glaze color and uniformly distributed yellow crystal bodies in a circular shape can be stably prepared.

This invention, entitled "A Preparation Method and Application of Titanium-Doped Iron Oxide Red," belongs to the field of lithium-ion battery cathode material technology. The preparation method involves: controlling the titanium content of ferrous sulfate, a byproduct of titanium dioxide production; precipitating and removing impurities from it with Fe and Ti elements; adjusting the pH; and adding Fe... 2+ Heating, filtration, washing, and drying yield titanium-doped iron oxide red precursor powder. This invention uses ferrous sulfate, a byproduct of titanium dioxide production, as the iron source and utilizes its titanium impurities for in-situ titanium doping, thus producing high-purity titanium-doped iron oxide red with adjustable titanium content, high purity, and low impurity content. Furthermore, the entire preparation process of titanium-doped iron oxide red is simple, has a short production time, and is low in cost.

This application belongs to the technical field of building repair materials, and particularly relates to a red brick restoration agent and its restoration method. The red brick restoration agent is composed of the following components by weight: 30-40 parts polymer dry powder mortar, 8-12 parts aldehyde-free alcohol adhesive, 0.1-0.3 parts iron oxide red powder, 0.05-0.15 parts iron oxide yellow powder, and 8-12 parts clean water. This restoration agent, through the synergistic effect of "nano-mineral color matching + polymer micro-reinforcement + aldehyde-free alcohol adhesive bonding," enables the repair layer to be "integrated" with the old brick in four dimensions: visual appeal, mechanical properties, durability, and environmental friendliness, achieving "original appearance restoration and lifespan extension."

The utility model relates to the technical field of grinding and purification of iron oxide red, solves the technical problem that a purification filter plate is short in service life, and particularly relates to a high-performance grinding and purifying machine for iron oxide red, which comprises a storage bin serving as a supporting foundation, a feeding bin is fixedly connected to the storage bin, and a grinding base used for grinding iron oxide red is arranged in the middle of the inner side of the feeding bin. Due to the arrangement of the screening and purifying assembly, ground iron oxide red can be screened and purified, coarse materials accumulated on the screening plate can be shaken off from the top end of the screening plate in the screening period, and then the coarse materials are gathered in the coarse material collecting drawer, so that the surface of the screening plate is prevented from being blocked, the cleaning frequency can be reduced, and the working efficiency is improved. And therefore, the service life of the screening plate is prolonged, the situation of operation interruption is avoided, and the overall machining efficiency is improved.

This application relates to the field of coating compositions, specifically disclosing an environmentally friendly epoxy coating that is phosphorus-free and resistant to salt spray for 1000 hours and its preparation method, comprising component A and component B, including the following raw materials in parts by weight: epoxy resin 35-40 parts, n-butanol 2-2.5 parts, xylene 5-5.5 parts, dispersant 0.1-0.5 parts, iron oxide red 10-12 parts, heavy calcium carbonate 4-6 parts, zinc oxide 2-4 parts, rust-inhibiting silica powder 4-6 parts, kaolin 4-6 parts, talc powder 3-4 parts, rust-inhibiting pigment 7-8 parts, precipitated barium sulfate 12-15 parts, petroleum resin 4-5 parts, leveling agent 0.02-0.06 parts; curing agent 12-15 parts, n-butanol 1-2 parts, xylene 1-1.5 parts, dispersant 1-3 parts, mica iron oxide 0.4-0.6 parts; talc powder including one or more of calcium ion exchange talc powder, cerium ion exchange talc powder, and lanthanum ion exchange talc powder. The coating in this application is environmentally friendly, phosphorus-free, and has good salt spray resistance.

The present invention relates to the technical field of iron oxide red preparation. Disclosed is a method for preparing high-purity iron oxide red by microwave roasting and ultrasonic-enhanced acid leaching of coal gangue. By controlling the microwave roasting temperature of the coal gangue to be 500°C and the time to be 30 min, the iron dissolution rate reaches 93.6% under the conditions of an optimal ultrasonic power of 300 W, an acid concentration of 20%, an acid leaching temperature of 80°C, an acid leaching time of 30 min, and a liquid-solid ratio of 4 mL / g. A leaching solution is extracted by using a solvent extraction method (TBP-SK-hydrochloric acid system). After extraction, the content of iron ions in the solution is as high as 99.78%; and the optimal pH for hydrothermal treatment is controlled to 11, the temperature is controlled to 170°C and the time is controlled to 3 h, so as to prepare a high-purity iron oxide red product. The iron oxide red has a purity of 99.89%, which meets the requirement (98.5%) of "YHT4 Iron Oxide Standard for Ferrite" (GB / T 24244-2009), and can be used as a raw material for producing high-performance soft-magnetic ferrite.

The present application provides a kind of high furnace baking device for iron oxide red production, including hot air surrounding pipe and the connecting pipe being connected with hot air surrounding pipe, the inside circumference of the hot air surrounding pipe is equidistantly fixed and installed with several branch pipes, the air outlet port of each branch pipe is provided with adjusting plate.The present application is provided with adjusting plate that can swing and rotate around branch pipe axis, and utilizes the combination of rotating ring, push ring, rack and pinion transmission and electric telescopic rod, realizes the independent driving and linkage adjustment of adjusting plate in two degrees of freedom;Electric telescopic rod drives rack translation through push ring and connecting rod, drives adjusting plate to swing around its connecting shaft to change airflow injection angle;Drive motor drives rotating ring to rotate through gear ring transmission, and then drives adjusting plate to rotate around branch pipe axis as a whole through arc block, to adjust the circumferential distribution of hot air;The device can significantly improve the uniformity of hot air distribution in high furnace baking process, improve baking quality and efficiency.

The invention relates to the technical field of iron oxide pigment production, in particular to a method for preparing high-purity iron oxide red by using industrial waste residues, which comprises the following steps: adding a proper amount of NaOH aqueous solution into a ferrous sulfate solution with the concentration of 4.5-5g / 100ml and the pH value of 4-4.5, adjusting the pH value to 10-11, introducing air to react for 45-60 minutes, and removing mother liquor to obtain seed crystal; the method comprises the following steps: putting the iron mud and seed crystal which are stirred at a high speed, a ferrous sulfate solution with the concentration of 28-30g / 100ml, an additive and a proper amount of water into a reaction kettle, continuously stirring and reacting for 2.5-3 hours, and controlling the temperature in the reaction kettle at 130-140 DEG C; and sequentially sieving, cleaning, dehydrating, drying and crushing to obtain the product. The method for preparing the high-purity iron oxide red from the industrial waste residues is short in reaction time in the preparation process and low in energy consumption, and the obtained iron oxide red is high in purity.

The invention discloses a method for recovering trisodium phosphate, tripotassium phosphate, iron oxide red and graphite from iron phosphate slag, which comprises the following steps: step 1, pulping: putting the iron phosphate slag into pulping equipment, adding a proper amount of deionized water, and starting the equipment for pulping, so that the iron phosphate slag is fully dispersed to form a uniform pasty material; the pulping aims to increase the contact area between the iron phosphate slag and a subsequent reagent and improve the efficiency of a subsequent reaction; step 2, stirring and leaching: transferring a slurry material obtained by pulping into a stirring and leaching reaction kettle, adding 32% of liquid caustic soda into the reaction kettle according to a proportion of 20%, then starting a stirring device, and controlling the temperature in the reaction kettle to be 25-40 DEG C and the stirring and leaching time to be 30-60 minutes, so that the liquid caustic soda fully reacts with components in the iron phosphate slag; the method has the advantages that various valuable components in the iron phosphate slag are efficiently recycled, and the method is high in resource utilization rate, environmentally friendly, low in cost and the like.

This invention discloses a water-based asphalt waterproof coating and its preparation method, relating to the field of building waterproofing technology. It comprises the following raw material components in parts by weight: 5-30 parts emulsified asphalt, 10-40 parts heavy calcium carbonate, 1-10 parts iron oxide red, 0-30 parts water, 0.1-3 parts adhesion promoter, 0.1-0.6 parts defoamer, 0.1-0.6 parts bactericide, 0.5-3 parts thickener, 0.1-0.5 parts pH adjuster, 35-50 parts modified WPUA post-crosslinking emulsion, and 0.05-0.3 parts photoinitiator. The waterproof coating prepared by this invention utilizes a modified WPUA post-crosslinking emulsion, fully leveraging the UV-treated crosslinking technology of the double bonds in the modified WPUA post-crosslinking emulsion. By adjusting the proportions of each component, the weather resistance, water resistance, and adhesion strength of the water-based asphalt waterproof coating are improved.

This utility model belongs to the field of pipeline repair technology, specifically a flexible liner for in-situ repair of water supply and drainage pipelines. It includes an inner membrane, a fiberglass braided layer, a photosensitive resin impregnated layer, and a composite light-shielding protective film arranged from the inside out. The photosensitive resin impregnated layer contains 0.5-2 wt% photoinitiator, 0.1-0.5 wt% polymerization inhibitor, and 1-3 wt% hydrophobic agent. The composite light-shielding protective film includes: an inner light-blocking layer, which is a two-component blended PE film of carbon black and iron oxide red; an outer wear-resistant layer, which is a polyimide-coated PET film; and a wavy pre-embossed surface with a embossing depth of 0.3-0.8 mm. This utility model, by constructing a composite light-shielding protective film with an inner light-blocking layer and an outer wear-resistant layer, and simultaneously setting wavy pre-embossing on it, can improve the wear resistance of the flexible liner while preventing it from breaking during expansion.

This invention relates to a wall painting coating and its preparation method, belonging to the field of polymer coating technology. The wall painting coating of this invention comprises the following components in parts by weight: 35-45 parts of waterborne acrylic copolymer emulsion; 15-25 parts of waterborne iron oxide red paste; 1.8-2.5 parts of silane-modified attapulgite clay; 0.4-0.6 parts of associative polyurethane thickener; 0.6-1.0 parts of wood fiber; 0.8-1.2 parts of wetting and dispersing agent; 0.15-0.2 parts of defoamer; 2.0-3.0 parts of film-forming aid; and 31-33 parts of water. The wetting and dispersing agent is sorbitan monolaurate, N,N-bis(2-hydroxypropyl)-dodecanoamide, or N-tris(hydroxymethyl)methyl-citrate monohydrazide amide.

The invention relates to the technical field of hydrometallurgy and inorganic nano material preparation, and discloses a preparation method of iron oxyhydroxide and a preparation method of iron oxide red. The preparation method of the iron oxyhydroxide comprises the steps that acid leaching slurry is provided, the acid leaching slurry is composed of acid leaching liquid and a second solid material, the acid leaching liquid is a reaction product of an acid solution and a first solid material, and the first solid material and the second solid material are solid raw materials containing nickel and iron; introducing oxygen-containing gas into the acid leaching slurry, controlling the temperature of the acid leaching slurry to be 65-95 DEG C, carrying out oxidation precipitation reaction, stopping introducing the oxygen-containing gas after full reaction, and carrying out solid-liquid separation to obtain filter residues with iron oxyhydroxide as a main component and nickel-containing filtrate. The preparation method of the iron oxide red comprises the preparation method of the iron oxyhydroxide and also comprises the step of preparing the iron oxide red from the prepared iron oxyhydroxide. According to the method provided by the invention, effective separation of iron and nickel can be realized, and high-value recovery of iron is realized.

In order to solve the problems that the mechanical property and the long-acting corrosion resistance of the existing water-based paint are difficult to consider, and the existing water-based paint often depends on high-cost or toxic raw materials, the invention provides an innovative design based on'structure-function 'dual synergy. The coating system realizes performance breakthrough through the following synergistic mechanism: firstly, talcum powder with specific particle size and form is compounded with muscovite, a multi-scale labyrinth type physical shielding structure with small lamellas filling large lamellar gaps is constructed in the coating, and a corrosion medium permeation path is greatly prolonged and retarded; secondly, anion emulsified asphalt particles are coated in situ in the curing process of the water-borne epoxy resin through process design, a compact sea-island structure composite matrix with epoxy as a sea phase and asphalt as an island phase is formed, and excellent adhesive force and mechanical strength are provided for the coating. The'island structure 'and the'maze structure' cooperate in space and act together with the environment-friendly chemical passivation pigment (iron oxide red / zinc phosphate), so that triple efficient cooperation of physical shielding, chemical corrosion inhibition and matrix enhancement is realized. The coating is excellent in comprehensive performance under a preferable ratio, has long-acting corrosion resistance, high mechanical strength, good constructability and environmental friendliness, is remarkably reduced in raw material cost, and is particularly suitable for long-acting protection in harsh corrosive environments such as refinery equipment, oil and gas storage tanks and ocean platforms.

The application discloses a temperature-sensing color-changing coating for a cooker surface and a preparation method and application thereof; the coating is composed of coatings A and B with different colors; the coating composition comprises methyltrimethoxysilane, octamethoxytrisilane, pigments A / B, a filler, a thickening agent aqueous solution, a dispersing agent, a leveling agent, isopropyl alcohol, acetic acid and deionized water; the application utilizes the color mixing between iron oxide red with different color phases and titanium dioxide and black pigments respectively, prepares two coatings with different red colors, and applies the coatings to the bottom center position of a ceramic coating non-stick pot; at normal temperature, due to the color difference between the two coatings, a certain pattern is presented; when the bottom temperature of the pot reaches 170-200 DEG C during cooking, due to the color change of inorganic pigments at high temperature, the two red colors gradually change into the same color; after the cooking is finished, with the gradual decrease of the pot temperature, the two colors are restored into different colors, and the pattern is presented again, so that the function of indicating the bottom temperature of the pot is achieved.