Rotary kiln with a wide range of materials adaptability, in areas such as chemical and mechanical engineering applications is very broad, often used to deal with particulate matter. In the course of its operation, the particle mixing process is very complicated. This paper studies the use of discrete units of different size particles in a large rotary kiln mixing process, using the contact numbers to measure particle size axial mixing. Aluminum major minerals exist in nature, it crushed impregnated with high temperature sodium hydroxide solution to obtain sodium aluminate solution; filtered to remove the residue, the filtrate was cooled and added aluminum hydroxide crystals, after long agitation, sodium aluminate solution will Resolution precipitated aluminum hydroxide precipitate; wash the precipitate is separated out, and then the alumina rotary kiln at a temperature of 950-1200 ℃ calcined. Generating a white alumina white water insoluble oxide neutral, odorless and tasteless, hard, easily soluble in water, but does not absorb moisture easily deliquescence, but the calcined alumina is not hygroscopic . Alumina contact with skin and eyes have a certain degree of risk, if you eat, then it is likely to cause Alzheimer's and other symptoms. Alumina is generally used in mining. Ceramics and materials science, also called alumina. Alumina can be recycled many times, cycle times and material grade and the specific process related. Professional production of rotary kiln, Henan YuFeng Heavy Equipment: The main products are: lime kiln, rotary kiln, ceramic sand | sand rotary kiln, rotary kiln calcium aluminate powder, laterite nickel ore rotary kiln, rotary kiln magnesium, zinc oxide rotary kiln, rotary kiln bauxite, petroleum proppant rotary kiln, rotary kiln, disc granulator, wind swept coal mill, ball mill, preheater, burners, coolers, etc.. Welcome new and old customers to our company to negotiate! Please indicate Henan YuFeng Heavy Machinery (http://www.yufchina.com)