Production method of crude lead smelting environment-friendly copper removing agent

A production method and an environment-friendly technology are applied in the field of environment-friendly copper remover for crude lead smelting, which can solve the problems of low sulfur content and poor copper removal effect, and achieve the effects of reducing pollution and reducing emissions.

Active Publication Date: 2018-12-21
栾川县亨凯冶金材料销售有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vulcanization is based on the fact that the affinity between sulfur and copper is greater than that of lead. Add copper remover (sulfur, pyrite) to make copper and sulfur form copper sulfide, which is removed in the form of scum. The existing copper remover has a low sulfur content. Poor copper removal effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The invention discloses a production method of an environment-friendly copper removal agent for crude lead smelting, and the adopted technical scheme includes the following steps:

[0014] Step1. Crushing and screening: After the pyrite waste residue is transported to the feeding hopper by the forklift, it is sent to the jaw crusher through the vibrating feeder for material crushing. The crushed material enters the vibrating screen for screening by the belt, and the material with a particle size of <5mm enters the semi-finished product storage area through the chute; the material with a particle size of ≥5mm is transported to the grate for secondary screening through the belt, and the grate is screened The material with a particle size of 5mm≤particle size<10mm enters the roller crusher for crushing through the chute, and the crushed material enters the vibrating screen through the belt for re-screening; after screening by the grate, the material with a particle size≥10m...

Embodiment 2

[0019] Embodiment 2 is basically the same as Embodiment 1, the difference is that: the inlet temperature of the drying furnace in Step3 is 180° C., and the outlet temperature is 80° C. After drying, the moisture content of the material is reduced from 12% to 0.1%.

Embodiment 3

[0021] Embodiment 2 is basically the same as Embodiment 1, the difference is: preferably, the inlet temperature of the drying furnace in Step3 is 160° C., and the outlet temperature is 90° C. After drying, the moisture content of the material is reduced from 12% to 0.08%.

[0022] Components not specified herein are prior art.

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PUM

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Abstract

The invention relates to a production method of a crude lead smelting environment-friendly copper removing agent. According to the technical scheme, the production method comprises the steps that ferric sulfide is crushed multiple times, impurities such as sand in ferric sulfide particles are removed through a jigging machine, and drying is conducted after stirring to remove water. The sulphur content of the produced copper removing agent is higher than 52%, no pollution or smoke is generated, emission of sulfur dioxide is reduced, no irritant gas is generated, no low-level pollution is generated, and the copper content in lead is lower than 0.00015% after copper removing. Environment-friendly devices such as a biomass hot blast furnace, a bag-type dust collector and a cyclone dust collector are widely adopted in the production process, green production is achieved, and pollution to the environment in the production process is reduced.

Description

technical field [0001] The invention belongs to the technical field of copper removal from crude lead, and relates to a production method of an environment-friendly copper removal agent for crude lead smelting. Background technique [0002] The lead content of crude lead is 96-98.4%, and the remainder is Cu, Sn, As, Sb, Zn, S and other elements. The existence of these elements is very harmful to the properties of lead and must be removed and recycled to the greatest extent. Copper removal from crude lead usually adopts two methods of smelting and vulcanization. The basic principle of smelting to remove copper is based on the fact that the solubility of copper in the lead liquid decreases as the temperature drops. When the lead liquid with high copper content is cooled, the copper becomes solid and crystallizes out, because its specific gravity is smaller than that of lead (approximately 9), so it floats to the surface of the lead liquid and is removed in the form of copper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B03B7/00
CPCB02C21/00B03B7/00
Inventor 杨红波
Owner 栾川县亨凯冶金材料销售有限公司
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