A process of making a dense, cohesive and uniform aluminum oxide coating on a metallic substrate includes electrodepositing polynuclear aluminum oxide hydroxide clusters from a polynuclear aluminum oxide hydroxide cluster solution on a metallic substrate to form a precursor coating, and post-treating the precursor coating to form a final aluminum oxide coating on the metallic substrate.

A process of making a dense, cohesive and uniform aluminum oxide coating on a metallic substrate includes electrodepositing polynuclear aluminum oxide hydroxide clusters from a polynuclear aluminum oxide hydroxide cluster solution on a metallic substrate to form a precursor coating, and post-treating the precursor coating to form a final aluminum oxide coating on the metallic substrate.

The present invention relates to a porous aluminum hydrate, to a process for preparing same and to the use of same as intermediate in the preparation of an alumina or of a mixed oxide based on aluminum, on cerium and on zirconium. The invention also relates to the alumina obtained from the aluminum hydrate.

The present invention relates to a porous aluminum hydrate, to a process for preparing same and to the use of same as intermediate in the preparation of an alumina or of a mixed oxide based on aluminum, on cerium and on zirconium. The invention also relates to the alumina obtained from the aluminum hydrate.

Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D.sub.50-value of 15-30 m, a D.sub.90-value of 30-45 m and a D.sub.10-value of <9.5 m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D.sub.50-value of 15-30 m, a D.sub.90-value of 30-45 m and a D.sub.10-value of <9.5 m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D.sub.50-value of 15-30 m, a D.sub.90-value of 30-45 m and a D.sub.10-value of <9.5 m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D.sub.50-value of 15-30 m, a D.sub.90-value of 30-45 m and a D.sub.10-value of <9.5 m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

The present disclosure discloses a method for recycling all types of lithium batteries. First, the lithium battery waste is acid-leached to obtain a solution containing most of metal ions. After filtering, the solution is separated from the remaining solids, and then the obtained solution is subjected to separate precipitation many times. After separately adjusting the pH value of the solution many times, adding precipitants with a high selectivity ratio, and matching with filtration and separation reaction, all ions in the lithium battery waste are sequentially precipitated in forms of iron phosphate (FePO.sub.4), aluminum hydroxide (Al(OH).sub.3), manganese oxide (MnO.sub.2), dicobalt trioxide (cobalt oxide, Co.sub.2O.sub.3), nickel hydroxide (Ni(OH).sub.2), and lithium carbonate (Li.sub.2CO.sub.3).

The present disclosure discloses a method for recycling all types of lithium batteries. First, the lithium battery waste is acid-leached to obtain a solution containing most of metal ions. After filtering, the solution is separated from the remaining solids, and then the obtained solution is subjected to separate precipitation many times. After separately adjusting the pH value of the solution many times, adding precipitants with a high selectivity ratio, and matching with filtration and separation reaction, all ions in the lithium battery waste are sequentially precipitated in forms of iron phosphate (FePO.sub.4), aluminum hydroxide (Al(OH).sub.3), manganese oxide (MnO.sub.2), dicobalt trioxide (cobalt oxide, Co.sub.2O.sub.3), nickel hydroxide (Ni(OH).sub.2), and lithium carbonate (Li.sub.2CO.sub.3).