62 results about "Red Ferric Oxide" patented technology

The invention discloses a controlling method of iron oxide sheet of rolled band steel surface of middle-thin board blank, which is characterized by the following: controlling component; proceeding heat load directly; heating to remove phosphor; rolling under high temperature; forcing to cool; controlling Si content in the steel; eliminating red ferric oxide on the surface of heat roll steel; fitting for the steel with not more than 0.18%C, not more than 0.20% Si, not more than 1.50% Mn, not more than 0.015% P, not more than 0.01% S and Nb, V and Ti.

An object of the present invention is to provide soft capsule formulations of active vitamins D, well-suited to practical production with easy discrimination of active ingredient levels, in which stability of the active vitamins D₃ to light and heat is ensured, and which material is highly safe to the human body. According to the present invention, soft capsule formulations of active vitamins D₃ can be obtained-wherein the capsule shell contains a white pigment and yellow iron oxide and/or red iron oxide, or titanium oxide and caramel, or yellow iron oxide.

The invention discloses a method for preparing a solid-mold casting coating material for large-sized cast parts. According to the method, the solid-mold casting coating material is prepared from the following ingredients in parts by weight: 68-75 parts of quartz powder, 5-7 parts of wood ash, 5-7 parts of fly ash, 10-12 parts of water glass, 10-12 parts of sodium bentonite, 4-6 parts of nano calcium carbonate, 1-2 parts of lignosulfonic acid, 2-4 parts of carboxymethyl cellulose, 0.3-0.7 part of glycerine, 2-4 parts of sodium borate, 5-7 parts of starch paste, 1.4-1.6 parts of silica sol, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder, 1-2 parts of sodium tripolyphosphate, 4-5 parts of potassium feldspar powder and 525-635 parts of water. The solid-mold casting coating material prepared by the method has excellent gas permeability and quick-drying performance in both a high-temperature environment and a low-temperature environment, thereby meeting the production requirements of the large-sized cast parts.

The invention relates to a lost foam coating and a preparation method thereof. The coating comprises the following components in parts by weight: 45-55 parts of bauxite clinker, 8-15 parts of alundum powder, 20-25 parts of quartz powder, 3-8 parts of flaky graphite, 1-3 parts of sodium-based bentonite, 0.5-1.5 parts of CMC (Carboxyl Methyl Cellulose), 0.5-1.5 parts of polyvinyl alcohol, 1-3 parts of silica sol, 0.1-0.3 part of T-80, 0.2-0.4 part of n-caprylic alcohol and 1-3 parts of red ferric oxide powder. The lost foam coating provided by the invention has better high-temperature permeability and good brushability. The lost foam coating has high permeability, extremely strong adhesion and good brushability on the premise of improving the strength of a foam pattern, the foam pattern can meet the handling requirement of a large-sized casting after being dried, and the sand adhesion resistance is high.

The invention discloses a method for preparing a solid-mold casting coating material. According to the method, the solid-mold casting coating material is prepared from the following ingredients in parts by weight: 65-75 parts of rectorite powder, 5-7 parts of diatomite, 10-12 parts of wood ash, 10-12 parts of sodium bentonite, 4-6 parts of nano attapulgite, 1-2 parts of sodium tripolyphosphate, 0.8-1.5 parts of sodium carboxymethyl cellulose, 5-7 parts of starch paste, 1.4-1.6 parts of silica sol, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder and 525-535 parts of water. The solid-mold casting coating material prepared by the method has high wear resistance and excellent gas permeability and quick-drying performance in both a high-temperature environment and a low-temperature environment, thereby meeting the production requirements of large-sized cast parts.

The invention discloses a method for preparing a high-wear-resistance solid-mold casting coating material. According to the method, the high-wear-resistance solid-mold casting coating material is prepared from the following ingredients in parts by weight: 65-75 parts of quartz powder, 5-7 parts of diatomite, 10-12 parts of wood ash, 10-12 parts of sodium bentonite, 4-6 parts of nano attapulgite, 1-2 parts of lignosulfonic acid, 0.8-1.5 parts of sodium carboxymethyl cellulose, 5-7 parts of starch paste, 1.4-1.6 parts of silica sol, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder and 525-535 parts of water. The solid-mold casting coating material prepared by the method has high wear resistance and excellent gas permeability and quick-drying performance in both a high-temperature environment and a low-temperature environment, thereby meeting the production requirements of large-sized cast parts.

The invention discloses a method for preparing a solid-mold casting coating material for cast aluminum. According to the method, the solid-mold casting coating material is prepared from the following ingredients in parts by weight: 65-75 parts of quartz powder, 5-7 parts of plant ash, 5-7 parts of slag, 10-12 parts of corundum powder, 10-12 parts of sodium bentonite, 4-6 parts of nano attapulgite, 1-2 parts of lignosulfonic acid, 2-4 parts of polyvinyl alcohol, 0.3-0.7 part of n-octanol, 2-4 parts of sodium borate, 5-7 parts of starch paste, 1.4-1.6 parts of silica sol, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder and 525-535 parts of water. The solid-mold casting coating material prepared by the method has excellent gas permeability and quick-drying performance in both high-temperature environments and low-temperature environments, thereby being capable of meeting the production requirements of large-sized cast parts.

The invention mainly discloses a preparation method of a superfine iron oxide red pigment with high glossiness and pure red tone. The preparation method comprises the following steps of: preparing a solution from refined ferrous sulfate, neutralizing the solution with a mixed alkaline solution, heating to 40-50 DEG C, and oxidizing to obtain special seed crystals; carrying out secondary oxidization under the condition of existence of seed crystals, depositing generated iron sesquioxide on special crystal nucleus, neutralizing diluted ammonia water with the concentration of about 8 percent by using the generated sulfuric acid, controlling PH of the system to 3.0-5.0, continuously dropwise adding the ferrous sulfate and the diluted ammonia water, and gradually growing the crystal nucleus to form the orange red iron oxide pigment; and pulping an organic red iron oxide filter cake, and calcining at high temperature to obtain the superfine iron oxide red pigment with high glossiness and pure red tone. The preparation method disclosed by the invention has the advantages that: the superfine iron oxide red pigment with high glossiness and pure red tone is prepared by utilizing the preparation method disclosed by the invention; and the preparation method is realized by using a method of reducing the influence degree to the environment and has favorable environment-friendly effect.

The invention discloses a preparation method and application of rice-like alpha-iron trioxide. The preparation process adopts a hydrothermal reaction method, and the specific steps are as follows: first, mechanical stirring is used to uniformly disperse the iron salt and the surfactant in deionized water to obtain a mixed solution; the mixed solution is placed in a reactor for hydrothermal reaction; finally, the obtained The product is washed and freeze-dried to obtain a precursor; then the precursor is calcined at 200-900° C. for 1-40 hours, cooled to room temperature and ground to obtain red rice-like ferric oxide powder material. The invention has the advantages of wide source of raw materials, simple preparation method, convenient operation, green and pollution-free, and the obtained material has high structural purity, regular morphology and uniform particle size distribution. It can reach more than 1000mAh/g, and has better cycle life.

The invention relates to a preparation method for ferric oxide coated tin dioxide nanometer polycrystalline microballoons, and belongs to the technical field of preparation of new energy materials of inorganic compounds. The ferric oxide coated tin dioxide nanometer polycrystalline microballoons are prepared by the hydrothermal method with cane sugar, urea, tin tetrachloride and ferric trichloride as raw materials. The method comprises the following steps: dissolving tin tetrachloride in water, adding cane sugar, carrying out stirring for 0.5 hour at room temperature, putting the obtained solution into a hydro-thermal vessel with a volume of 45 ml, heating the solution to a temperature of 180 DEG C for a hydro-thermal reaction for 24 hours, carrying out centrifugal separation when the reaction is finished, and carrying out rinsing with considerable deionized water so as to obtain black powder; dissolving ferric trichloride and urea in a mixed solution of ethanol and water, adding the black powder into the solution, carrying out stirring and ultrasonic treatment, putting the obtained liquid into the hydro-thermal vessel with a volume of 45 ml, and heating the liquid to a temperature of 60 DEG C for a hydro-thermal reaction for 48 hours; carrying out centrifugal separation when the reaction is finished, and carrying out rinsing with considerable deionized water and sintering at a temperature of 500 DEG C in air for 4 hours so as to obtain red ferric oxide coated tin dioxide nanometer polycrystalline microballoons. The invention has the advantages of simple operation, cheap raw materials, environmental protection, high yield, etc.

The invention discloses a method for extracting and preparing nickel carbonate, nickel sulfate and red ferric oxide from serpentine and tailings thereof. The serpentine and tailings thereof are used as raw materials. The method comprises the following unit processes of: pre-treating; performing acid leaching; performing fractional precipitation; performing ammonia leaching; acidifying; preparing nickel carbonate; preparing nickel sulfate; and calcining. According to the method, useful components such as nickel and iron in the serpentine can be fully and effectively utilized, products such as nickel carbonate, nickel sulfate and red ferric oxide with tight market demand can be produced, and higher nickel and iron recovery rate can be obtained. The purity of the nickel carbonate is 47.93 percent in terms of nickel and the yield is 90.10 percent; the purity of the nickel sulfate is 22.12 percent in terms of nickel and the yield is 85.73 percent; and the purity of the red ferric oxide is 92.40 percent in terms of Fe2O3 and the yield is 92.94 percent.

A surface treatment method for hot-rolled steel strips, which is carried out in the following steps: (1) heating the slab to 1220-1250 ° C, descaling after heat preservation; (2) rough rolling, the cumulative reduction is 75-77%, Hot coiling at 1000~1100°C to obtain the intermediate billet; (3) second descaling, the temperature is 1100~1300°C; then finish rolling, the cumulative reduction of finish rolling is 80~90%; (4) with 10~ Cool at a speed of 12°C/s to 500~520°C, and then coil. The process of the present invention can effectively reduce FeO fragmentation during the rolling process, avoid the subsequent generation of red scale, and at the same time effectively reduce the thickness of scale, and finally realize the flexible production of scale control.

The invention relates to waterborne epoxy iron red shop primer and a preparation method thereof. The waterborne epoxy iron red shop primer contains two compositions; A composition is prepared by the steps of dissolving epoxy-modified waterborne amine hardener in deionized water, then adding wetting dispersant, polymethyl siloxane, iron oxide red, precipitated barium sulfate, sericite, compound ferrotitanium powder, and aluminium triphosphate, and mixing, blending and grinding the mixture; B composition is prepared by mixing and blending bisphenol-a-type epoxy resin and butyl glycidyl ether. The waterborne epoxy iron red shop primer is safe and environment-friendly and can be used as anticorrosive shop primer for interior and exterior walls of steel oil storage tanks in oil fields.

The invention provides a friction block in a brake pad. The friction block is prepared from phenolic resin or boron modified phenolic resin or melamine modified phenolic resin, nitrile butadiene rubber powder, lignin fiber, activated carbon, expandable graphite, molybdenum disulfide, barium sulfate, calcium carbonate, calcium sulfate whisker, iron oxide yellow, aluminum oxide, red ferric oxide powder, silicon carbide, wollastonite, vermiculite powder and high abrasion furnace black. The invention further provides a preparation method of the friction block based on the component formula. The preparation method conducts ingredient strengthening and technology strengthening for the friction block, ingredient strengthening and technology strengthening realize powerful combination, and therefore the comprehensive performances comprising the friction coefficient, hardness, wear-resisting property, impact toughness, heat-conducting property, resistance to high temperature and corrosion resistance of the friction block in the brake pad are improved so as to meet the use requirements under the high-load, high-temperature, high-speed and high-corrosive environment. The invention further provides the brake pad comprising the friction pad.

There is provided a marking method that is highly productive and enables production of easily-identifiable compositions for use in oral administration such as drugs and foods without damaging the quality of the oral composition. The marking method according to the present invention is a method for marking such a composition for use in oral administration and includes the steps of: dispersing a change in color-inducing oxide in the composition for use in oral administration; and scanning a surface of the composition for use in oral administration with a laser beam at wavelengths of from 200 nm to 1100 nm and with from 0.1 W to 50 W average power in to make the particles of the change in color-inducing oxide agglomerate so as to become discolored. The change in color-inducing oxide used in the present invention is at least one selected from the group consisting of titanium dioxide, yellow ferric oxide, and red ferric oxide.

The present invention relates to a process for producing red iron oxide with only marginal goethite content, wherein a ferrous chloride feedstock is employed as starting material. The process comprises precipitating lepidocrocite seeds having a high BET surface area by mixing the ferrous chloride feedstock with an alkali and oxidizing the obtained mixture, and growing the lepidocrocite seeds, whereby the lepidocrocite converts into red iron oxide.

The invention belongs to the technical field of the metallurgical industry and discloses a device for treating a pickling red ferric oxide desiliconized filter mass, which is used for carrying out harmless treatment to the pickling red ferric oxide desiliconized filter mass. The treatment device is characterized in that according to a process sequence, the device is provided with a heating device and a reclaiming device which are communicated with each other; the heating device heats and decomposes the pickling red ferric oxide desiliconized filter mass; and the reclaiming device respectively reclaims a solid material and a gas material decomposed and produced by the heating device. The invention also discloses a treatment method adopting the treatment device. With the technical proposal, the harmless treatment is carried out to the filter mass with certain toxicity and harmfulness; the full ferric content of an obtained solid is over 64 percent; the property of the solid is close to the property of concentrated iron powder; the solid can be returned to a sintering system for use and can be also used as a desiliconizing agent for the pretreatment of molten iron; the obtained industrial hydrochloric acid can be used for other applications; and the whole production process produces no waste liquid and no toxic gas. The device has small investment for process equipment, simple operation and maintenance and good economical benefit.

A process for making red iron oxide containing less than 1500 ppm sulfur is described. The iron oxide is useful as a catalyst or catalyst ingredient in a wide variety of processes and in a preferred embodiment has an acicular shape.

The invention discloses a method for preventing powdery peeling of hot-rolled pickling-free automobile beam steel scale, and belongs to the technical field of steel rolling. The composition and ratioof Fe3O4 and FeO are adjusted by controlling the content of the silicon element to be within the range of 0.28-0.30wt%, and 0.200-0.225wt% of chrome element is added for preventing red scale from being produced. By optimizing temperature technology parameters, a set of fans are added in the rolling cooling process, the blast capacity is 40000 m<3>/h, air pressure is 255 Pa, the cooling speed in the rolling process is improved, and therefore the FeO-Fe3O4 conversion efficiency in the rolling process is improved. By means of the method, the content of Fe3O4 generated in pickling-free steel is about 80%, the content of FeO is about 4%, the surface quality is greatly improved, the phenomenon of powdery peeling of hot-rolled pickling-free automobile beam steel scale is effectively prevented, and meanwhile scale plasticity is improved.

The invention relates to a lost foam coating and a preparation method thereof. The coating comprises the following components in parts by weight: 30-40 parts of bauxite clinker, 15-25 parts of magnesium oxide powder, 1-3 parts of sodium-based bentonite, 0.5-1.5 parts of CMC (Carboxyl Methyl Cellulose), 0.5-1.5 parts of polyvinyl alcohol, 0.3-0.8 part of phenol-formaldehyde resin, 0.2-0.4 part of n-caprylic alcohol and 0.5-1.5 parts of red ferric oxide powder. The lost foam coating provided by the invention has an excellent stripping effect and superior permeability, i.e., phenomena of air pores and slag inclusion can be effectively prevented, the quality of a casting is improved, subsequent treatment is simple, and a large amount of labor is saved.