How to increase the ZnO content in the volatilization kiln for zinc leaching residues in wet zinc smelting
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In conventional volatilization kilns, the Zn content in ZnO is typically between 55-60%, while the Zn content in the slag resulting from leaching is around 20-22%. The carbon content of the coke particles is above C75. I’m not sure how to maintain a high level of Zn content in ZnO, at around 60 or 58%, after it comes out of the kiln. I would appreciate some guidance from experts. :handshake
Factors such as temperature, amount of coke, and the time of feeding into the furnace should be controlled!
The key is to ensure proper operation of the large furnace (temperature, air volume, air pressure, coking rate), while also maintaining pressure balance in the control system as well as stability in the composition and moisture content of the material fed into the furnace. Ensure the particle size and composition requirements for coke powder and coal powder. Generally, if done well, the ratio of flue dust to bag dust is around 2:8.
Everything I’ve seen is cooled using huge air cooling towers. Others such as vacuum have only been seen in textbooks.
By using a new filtering method, it is possible to process the material without the need for cooling