Zinc calcine production and fume treating system and method

Abstract

The invention discloses a zinc calcine production and fume treating system. The system comprises a zinc calcine production unit and a fume treating unit, wherein the zinc calcine production unit comprises a rotary kiln, the tail of the rotary kiln is provided with a feeding port and a fume outlet, wherein the feeding port is provided with a feeding device, the fume outlet is connected with the fume treating unit, the fume treating unit comprises a settling chamber and a water purification spray tower which are sequentially connected, the water purification spray tower is provided with a gas discharging port and a liquid discharging port, wherein the gas discharging port is connected with an alkali liquor spray tower through a pipeline, fume discharged from the fume discharging port is discharged after being treated by the alkali liquor spray tower, the liquid discharging port is sequentially connected with a stirring pond and a sedimentation pond, zinc precipitation reaction is conducted on liquid coming out from the liquid discharging port in the stirring pond, the liquid enters the sedimentation pond to be precipitated, precipitated sludge is pressed and filtered by a pressing filtering machine and delivered to a feeding machine to be taken as the raw material and recycled. The system has the advantages of reasonable structural design and massive production, and environmentalpollution is reduced while a zinc smelting raw material of zinc calcine with stable quality and high zinc containing rate is provided.

Description

technical field [0001] The invention relates to the technical field of zinc calcined sand production and processing, in particular to a zinc calcined sand production and flue gas treatment system and method. Background technique [0002] In recent years, on the one hand, there is a huge gap in the demand for zinc resources in my country. On the other hand, a large amount of zinc-containing industrial waste ash and zinc-containing hazardous waste are directly discharged into the environment, which results in a waste of energy and resources and also causes environmental damage. Great pollution and damage. In the existing production technology, due to the high recovery cost, low efficiency and poor recovery technology of these zinc-containing wastes, it is impossible to recover zinc-containing waste residues on a large scale and convert them into stable quality and availability. High-quality zinc smelting raw materials, thereby solving environmental pollution and reducing resourc...

AI Technical Summary

Problems solved by technology

[0002] In recent years, on the one hand, there is a large gap in the demand for zinc resources in my country, and on the other hand, a large amount of zinc-containing industrial waste ash and zinc-containing hazardous waste are directly discharged into the environment, causing energy and resources to be wasted again and causing environmental damage. Great pollution and damage. In the existing production technology, due to the high cost of recycling these zinc-containing wastes, low efficiency, and unqualified recycling technology, it is impossible to recycle zinc-containing wastes on a large scale and convert them into stable quality and high availability. High-quality raw materials for zinc smelting, thereby solving environmental pollution and reducing resource gaps

At the same time, the smoke and dust emissions of existing metals and intermediate raw materials in the smelting production process will cause great environmental pollution. If large-scale production, the smoke and dust pollution will be even greater

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