Which industries are rotary kilns applied to?

(1) The technical performance and operation of rotary bed kiln, to a large extent, determine the quality, output and cost of enterprise products. The ballad "As long as the large kiln is turned, there will be tens of millions" is a vivid description of the importance of the production of the transit bed kiln.
(2) In the building materials industry, in addition to calcining cement clinker, the rotary bed kiln is also used to calcine clay, limestone and dry slag; In the production of refractory materials, the raw materials are calcined in a rotary kiln to stabilize their size, increase their strength, and then processed into shapes.
(3) In the beneficiation process, the lean iron ore is magnetically roasted in a rotary bed kiln to change the original weak magnetism of the ore into strong magnetism, which is conducive to magnetic separation.
(4) In the chemical industry, soda is produced in a rotary kiln, and phosphate fertilizer and barium sulfide are calcined. In the 1960s, LapPle and others in the United States invented a new process for producing phosphoric acid in a rotary bed kiln. This method has the advantages of low energy consumption, less electricity consumption, no sulfuric acid and utilization of medium and low grade phosphate rock.
(5) The whole production process of cement is summarized as "two grinding and one burning", in which "one burning" refers to the process of burning raw meal prepared by grinding into clinker under the high temperature of rotary bed kiln. Therefore, the rotary bed kiln is the main machine in cement production, commonly known as the "heart" of cement plants.
(6) In terms of environmental protection, developed countries in the world have used cement kilns to incinerate hazardous wastes and garbage for more than 20 years, which not only makes waste less and harmless, but also uses waste as fuel to save coal dust and achieve waste recycling.