In the preparation of zinc or zinc compounds are zinc concentrate industry as the main raw material. Use roaster roasting zinc smelting process, before baking you need to control the moisture content of zinc concentrate in 7%. Due to uneven moisture content of zinc concentrate, zinc concentrate which requires drying dehydration. Changzhou and now Drying Equipment Co., metal sulphide concentrates in-depth understanding of the drying process, has developed a zinc sulfide concentrate dryer, drying equipment, copper concentrate, molybdenum concentrate and nickel concentrate dryer drying equipment, and achieved good drying effect! Domestic zinc concentrate is used mainly dry dry dry dry kiln zinc concentrate dewatering! Zinc concentrate kiln drying equipment, also known as rotary kiln dryer drum dryer, belonging to conventional drying equipment. Currently lime kiln drying equipment is mainly used for drying and dry phosphogypsum production. Zinc concentrate drying process simple statement: zinc concentrate to be dried from the delivery device (usually a belt conveyor) from the inlet into the drying equipment. Zinc concentrate and hot air drying dry indoor heat exchange, the water is evaporated. Zinc concentrate kiln dryer inside wall welded copy board, whose role is to continually took the material, increase the contact area with the hot air. After drying is complete, the zinc concentrate is fed by a conveyor device within the vibrating screen for screening, screening of zinc concentrate shall meet the technical requirements under the zinc concentrate, can be sent to boiling furnace roasting; chunk of zinc concentrate by the bucket hoist into the crushing device broken, and then return within vibrating sieve. Zinc concentrate during the drying process, the speed of the rotary kiln 4.62r / min; zinc concentrate in the drying chamber residence time of about 20 minutes; copy plate size is 800 × 220 (mm), the number is 55, the welding In dry cylinder head and spiral copy board to the rear angle 45 °, respectively, and 60 °; inlet air temperature was 800 ℃; the air temperature was 140 ℃; yield of 34.4t / h. Zinc concentrate drying equipment failure, according to our understanding of the transformation method, domestic zinc concentrate drying process into two main problems: the lower the yield, the drying process occurs agglomeration of zinc concentrate. As a domestic zinc concentrate smelting enterprises reflect their workshop production of zinc concentrate drying equipment did not reach production equipment design, especially during the rainy season yields lower. The problem occurs primarily from the perspective of solving structural drying equipment. A copy board: when an excessive number of copy board, zinc concentrate drying kiln speed is slower, so that wet material can be more uniformly dispersed in the drying kiln. If prone to agglomeration of zinc concentrate over 12% initial moisture and eventually find dry incomplete. And copy number plates welded angle visible above. 2 drying cylinder speed: the speed and movement of materials is directly proportional to the slow speed will lengthen the drying time, and even cause excessive drying of the situation. The need for zinc concentrate dryer speed setting for the zinc concentrate moisture content. 3 heat drying equipment: the zinc concentrate drying equipment is mainly used to provide heat chamber. The manufacturers of the combustion chamber volume 28m? About its gas nozzle placed in the drying kiln, according to 1.9m at the horizontal centerline. This design is clearly unreasonable, the volume of the combustion chamber is too large, making the gas residence time in which to grow, and by a greater flame resistance in the process of entering the drying kiln. Moreover the combustion chamber heat loss is larger, the combustion chamber temperature reaches 1000 ℃ (the zinc concentrate drying apparatus kiln temperature less than 100 ℃). The device can be carried out in order to heat the transformation: the gas nozzle to move up 0.8m, furnace volume also reduced to 19m3, designed to tilt the bottom surface (in order to reduce heat loss and flames running resistance). Zinc concentrate zinc concentrate drying equipment during the drying process, the drying equipment is mainly used kiln drying equipment. If you want to know more information kiln dryer, or zinc concentrate drying kiln drying equipment CAD drawings and technical solutions, welcome to contact me. 

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