Rotary kiln for the production of magnesium metal

Henan Zhengzhou Mining Machinery Co.,Ltd. is a professional manufacturer of metal magnesium industry equipment supply, rotary kiln in the production of magnesium metal is very extensive and very important one of the equipment. Rotary kiln is a certain degree of gradient cylindrical, the slope of 3% to 3.5%, with the help of the kiln rotation to promote the material in the rotary kiln mixing, the material mixed with each other, and contact to reaction. Kiln burner jet coal combustion produces a lot of heat, heat to the flame radiation, convection of hot air, kiln brick conduction and other means of transmission to the material. The material relies on the inclination of the kiln cylinder and the kiln rotation to move forward in the kiln. The material with the kiln rotation, full roll, enhanced radiation heat transfer process. Raw materials are heated evenly, calcined completely, easy to control the calcination temperature. Magnesium metal smelting process mainly electrolytic and silicon thermal reduction method. Electrolysis: MgCl2 = Mg + Cl2. Silicon thermal reduction method: The dolomite (a mixture of CaCO3 and MgCO3) is calcined and decomposed to obtain calcined white (a mixture of CaO and MgO), which is further reduced to obtain metallic magnesium. About two tons of dolomite can get a ton of calcined white. CaCO3 · MgCO3=CaO·MgO+2CO2 (CaO·MgO)+si=2CaO·SiO2+2Mg. Utilizing the calcination process of dolomite in the rotary kiln can be continuously produced, which has the advantages of large production capacity, high degree of mechanization, simple maintenance, high activity of calcination, low ignition loss and high magnesium extraction rate.