Aluminium hydroxide

About: Aluminium hydroxide is a research topic. Over the lifetime, 2043 publications have been published within this topic receiving 22032 citations. The topic is also known as: Al(OH)3 & Amphojel.

Industrial wastes treatment after iron hydroxide flocculation - by anodic oxidation and aluminium hydroxide flocculation

Abstract: Industrial wastes with a high degree and greatly fluctuating content of pollutants, specially in the textile industry, are purified by an iron hydroxide flocculation process. The fluid is next oxidised anodically and, if necessary, chlorinated. The final stage is an anodic Al hydroxide flocculation. Before oxidn. the fluid is pref. passed through a flotation or sedimentation stage, and after the aluminium hydroxide flocculation through filters. This results in a minimum consumption of power and of Al. The inexpensive iron hydroxide flocculation performs the principal purification. The plant can be run quickly at maximum load in case the pollutant concentration rises rapidly.

A method of preparing a high-performance graphene reinforced aluminium-based composite material

Abstract: A method of preparing a graphene reinforced aluminium-based composite material is provided. The method includes a step of preparing graphene oxide; a step of performing surface modification on aluminum powder to prepare flake-like aluminum powder; a step of preparing graphene/aluminium hydroxide/aluminum multilayer clad structured powder, namely a step of mixing graphene and the aluminum powder, then adding the mixture into an alcohol solution, and performing ultrasonic treatment for 0.1-1 h at 30-50 DEG C to obtain the graphene/aluminium hydroxide/aluminum multilayer clad structured powder; and a step of adding the prepared graphene/aluminium hydroxide/aluminum multilayer clad structured powder into a hot pressing sintering mold, applying a pressure of 100-200 MPa, protecting the powder with argon or nitrogen and performing hot pressing sintering to obtain the high-performance graphene reinforced aluminium-based composite material. The method effectively avoids graphene agglomeration and interface reactions between the graphene and aluminum. The microhardness of the composite material prepared by the method is increased by 30% or above.

Wood imitation material and production technology thereof

Abstract: A wood-imitation material is made by using straw, seed husk as base material, and adding modified sodium silicate made from sodium silicate and sodium fluosilicate and condensed aluminium phosphate made from phosphoric acid and aluminium hydroxide through disintegrating, mixing, agitating and forming. Said invention has the advantage of no poisoness and harm, free from heating and pressurization while forming, fire-retardant, anti-pressure, water-resistant, anti-wear, anti-ageing, smooth surface and wood-feel, which is suitable for polishing, coating film etc..

Stable antacid suspension of aluminium and/or magnesium hydroxide(s) - prepd. by mixing powdered prod. with water, fragmenting and dispersing to give particle size of 5-10 microns

Abstract: Process for the preparation of a stable suspension of aluminium hydroxide and/or magnesium hydroxide, as active antacid agent, by mixing the aluminium hydroxide and/or magnesium hydroxide in powder form with water and then mechanically fragmenting and dispersing the mixture, until the mean particle size is of the order of 5-10 microns Used for treatment of gastric hyperactivity The present invention provides a high concentration neutralising suspension, having a creamy consistency, which is suitable for oral administration and has particles of sufficiently small and homogeneous size to give a dispersion having an active total surface adequate for gastric purposes and has an alkalinising capacity which is constant and measurable The neutralising capacity is at least four times that of comparable products prepared as gels and is superior to that of concentrated gels, thus allowing smaller amounts of product to be used

Process for the production of aluminum hydroxide of improved whiteness

Abstract: Aluminium hydroxide of high whiteness is produced by (i) heating aluminium hydroxide obtained from the Bayer process to a temperature of 300 to 700° C. (ii) dissolving the soluble fraction of the thus obtained activated product at 85 to 275° C. in aqueous sodium hydroxide to form a sodium aluminate liquor containing an undissolved residue of very fine boehmite, (iii) filtering said sodium aluminate liquor to obtain a clear solution of sodium aluminate supersaturated with respect to dissolved alumina, (iv) cooling said clear solution to 50 to 80° C. and seeding with crystallized aluminium hydroxide to induce further crystallization, and (v) separating, washing and drying the produced aluminium hydroxide crystals.