Aluminum oxide production paper

Uses. Manufacture of rayon, mercerized cotton, soap, paper, aluminum, petroleum products metal cleaning electrolytic extraction of zinc tin plating oxide coating... 

Aluminum oxide is used in the production of aluminum manufacture of abrasives, refractories, ceramics, electrical insulators, catalyst and catalyst supports, paper, spark plugs, crucibles and laboratory works,... 

Because both the black and the green materials contain aluminum oxide or hydroxide, a cause for the black color must be found. The amorphous copper material that shows in the EDAX results but not on the XRD pattern may be this cause. A possible source of the black color in corroded bronze is suggested by Gettens (13) in his study of the corrosion of an ancient Chinese fragment. He attributes a black color in the corrosion layers to the presence of tenorite (CuO) and states that because it is so amorphous, it gives indistinct diffraction patterns or none at all. In a later paper Gettens (14) repeats his belief that the dark product in bronze corrosion is tenorite and stresses the need for further analysis. Plenderleith (15) agrees that the dark material in bronze corrosion is tenorite, but much debate continues as evidenced by a more recently published discussion between corrosion scientists and museum conservators (16). 

Sodium aluminate (theoretical formula NaA102) has a certain industrial importance not only as an intermediate in the digestion of bauxite in the Bayer process (see Section 3.2.4.2). USA production of sodium aluminate in 1993 was estimated to be 85 10- t/a. Sodium aluminate is produced by dissolving hydrated aluminum oxide in 50% sodium hydroxide. It is utilized in water purification, in the paper industry, for the post-treatment of Ti02-pigments, for the manufacture of aluminum-containing... 

Recovery of SCWO products. Examples of valuable products include precious metal oxides, phosphate,paper fillers, iron and aluminum coagulants, and carbon dioxide. 128-130... 

Aluminum sulfate, often called alum, is used in paper making to increase the paper s stiffness and smoothness and to help keep the ink from running. It is made from the reaction of sulfuric acid with the aluminum oxide found in bauxite ore. The products are aluminum sulfate and water. Bauxite ore is 30% to 75% aluminum oxide. 

Aluminum oxides and related compounds have long been technologically important as abrasives (corundum) and in refractories and ceramics in the a-crystalline modification. In the y modification, a more open, defect structure, aluminum oxide becomes activated alumina and is useful in chromatography and in catalysis. A third modification occurs on the surface of the metal on exposure to air and serves as the well-known protective oxide. A more recent technological achievement is the production of remarkably uniform cylindrical fibers of AI2O3. These fibers can be incorporated in a variety of fabrics, papers, ropes, and so on, which gain the advantage of stability to very... 

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