Drying device and drying method of carbide slag

Abstract

The invention relates to a drying device and drying method of carbide slag, the device mainly comprises a flue gas generating furnace, a feeder, a drying pipe, a material scattering device, a separator, a fine particle conveying device, a finished product conveying device, a dust remover and a draught fan; the drying medium generated by the flue gas generating furnace and the high-moisture material to be dried fed by the feeder respectively enter the material scattering device and the drying pipe, the high-moisture material is scattered and preliminarily dried in the material scattering device, the deep drying and the pneumatic separation are achieved in the drying pipe, wherein particles with a particle size not exceeding the design upper limit are entrained into the separator by air stream, the coal particles with a particle size greater than the design upper limit fall into the scattering device and are scattered again; the finished product collected by the separator is sent into acarbide slag storage bin or a coal-use site through a conveying device; the exhaust gas discharged by the separator is discharged into the atmosphere through the draught fan after being processed by the dust remover; the device has the advantages of better drying effect, reliable operation, simple system and compact structure.

Description

technical field [0001] The invention relates to the technical field of drying, in particular to a carbide slag drying device and a drying method. Background technique [0002] Calcium carbide slag is the waste residue mainly composed of calcium hydroxide after hydrolysis of calcium carbide to obtain acetylene gas. In the process of chemical production, after one dehydration, the moisture content of calcium carbide slag is still as high as more than 40%, and it is in the form of paste. It is easy to leak and pollute the road surface during transportation. Long-term accumulation not only takes up a lot of land, but also has serious damage to the land. Erosion. To fundamentally solve the above problems, we can only seek new methods and treatment techniques, comprehensive utilization, turn harm into benefit, and turn waste into wealth. [0003] The main component of dry carbide slag is Ca(OH) 2 , can be used as a substitute for slaked lime, and is widely used in construction,...

AI Technical Summary

Problems solved by technology

[0005] The carbide slag drum drying process system is relatively simple and the technology is relatively mature, but there are also defects such as low heat transfer coefficient, small processing capacity of a single system, poor particle size distribution of finished products, and large floor space.

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