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Need to provide external heat source when the existing equipment of molybdenum and molybdenum concentrate roasting process for roasting heat, the main reaction of excess calories, calories late desulfurization shortage, excessive smoke and roasting, baking low flue gas SO2 concentration problems were studied roasting process "carbon" kiln molybdenum concentrate, molybdenum concentrate proposed a "carbon" roasting process and equipment. 
 

The process is carried out using a rotary kiln roasting of molybdenum, by setting the mezzanine of the heat exchanger in the kiln method, the recovery of molybdenum roasting main reaction heat released and preheated air, preheated air from the kiln out again into the discharge end for rotary kiln calcination reaction occurs with molybdenum concentrate and to segment the kiln off sulfur residual materials to supplement the heat zones, reducing the high temperature reaction zone in the middle of the rotary kiln temperature, molybdenum concentrate roasting process after Kai furnace in the fully completed without external heating of the state to achieve a molybdenum concentrate of "carbon" firing. 
 

The process to fully utilize the heat of reaction of molybdenum roasting, eliminating external heat source under normal production conditions (traditional roasting process a minimum of energy consumption indicators 275kgce / t), molybdenum concentrate to achieve a "carbon" roasting and zero CO2 emissions, is home and abroad. Relevant research results have been used widely in Luoyang, Henan Province China Molybdenum Industry Group smelting companies. Accordance with the minimum energy consumption indicators 275kg / t, the annual output of 200,000 tons is calculated using the self-heating of molybdenum roasting technology each year for the country to save 55,000 tons of standard coal, emissions CO213.7 tons; Meanwhile, product yield ratio improve the existing technology to around 20%, the content of molybdenum trioxide product than existing technology to improve the level of about 20%, better desulfurization product, the product is about 0.05% sulfur, contain far below the international sulfur content 0.1% standard. 

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