The Muitiple Effects of Rotary Kiln

In a fairly long period , the demand for DRI of our country is strong . In the whole world, the direct reduced iron production accounted for 5.5% of the crude steel production ,the direct reduced iron production accounted for 6.5% of the pig iron production, the direct reduced iron should be more than 20 million tons / year. Meanwhile, the shortage of scrap in China, especially high-quality steel scrap shortage, and to solve the scrap shortage in China, rely on imports DRI / HBI is unrealistic, impossible. Play our wealth of non-coking coal resource advantage, while taking advantage of both domestic and foreign iron ore resources in the domestic development of direct reduced iron production is essential, the sustainable development of Chinese iron and steel industry, circular economy, an important part of protecting the environment one. Many scholars and economists of the steel industry forecast: in the future long time, the development space of direction reduce iron is large .
 
The constant sharp technical performance and operation of the rotary kiln largely determine the product quality, productivity and cost of the enterprise. "As long as the large kiln turn, there are thousands and thousands" this ballad is on the production of rotary kiln importance of vivid description. Applications in the rotary kiln, the largest number in the cement industry. The entire production process of cement summarized as "two grinding burn", "burn" is good raw material grinding preparation, the role of the high temperature of the rotary kiln burning process clinker. Therefore, the rotary kiln cement production in the host, commonly known as the "heart" of the cement factory.

In the building materials industry, apart from the calcination of cement clinker,the rotary kiln is also used calcined clay, limestone and slag drying; rotary kiln calcination of raw materials in the production of refractory materials, its dimensional stability, strength increase, again molding. Beneficiation process rotary kiln depleted iron ore magnetic roasting ores original weak magnetic change to a strong magnetic facilitate magnetic separation. Chemical industry, the rotary kiln to produce soda, calcined phosphate, barium sulfide. LapPle the 1960s, the United States invented the new process rotary kiln production of phosphoric acid. The method has low energy consumption, power consumption, without the advantages of sulfuric acid and can be used in low-grade phosphate rock. On the environment, the world's developed countries to use cement kilns firing hazardous waste, garbage more than 20 years history, which not only makes waste minimization, harmless, and waste as a fuel saving ,achieve the purpose of doing resourceful waste.

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