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Method for depleting lead copper matte and bismuth copper matte by using induction electric furnace

A technology of induction electric furnace and lead matte is applied in the field of induction electric furnace depleted lead matte and bismuth matte, which can solve the problems of high energy consumption, high lead or bismuth content in sub-matte, short furnace body life and other problems, and can achieve production Simple process, high metal recovery rate and complete separation effect

Active Publication Date: 2014-06-11
长沙科力威蒸馏技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the recovery of lead, bismuth, copper and other valuable metals in lead matte and bismuth matte mostly adopts blast furnace method and reverberatory furnace method for depletion process. Or high bismuth, high energy consumption, serious environmental pollution, short furnace life and other shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Take 1000kg of lead-depleted matte as an example:

[0010] 1. Select 1000kg of lead matte, add 50kg of lead concentrate or sulfur, 150kg of iron filings or molded iron, and 50kg of pulverized coal.

[0011] 2. Mix the above ingredients and put them into the induction furnace, smelt at 800°C-1000°C for 2-3 hours to realize the separation of lead and copper in the metal form of lead matte, and then raise the temperature to 1200°C-1250°C Then smelt for 2-3 hours to reduce the lead compound to produce metallic lead, and the copper enters the sub-matte to realize the separation of copper and lead.

[0012] 3. In the 1200°C-1250°C temperature range of the above-mentioned reduction smelting, when iron does not participate in the reaction, pour the secondary matte and crude lead into the ingot mold, solidify and break to obtain secondary matte and crude lead.

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Abstract

The invention provides a method for depleting lead copper matte and bismuth copper matte by using an induction electric furnace. The method is characterized by comprising the following steps of: dosing lead copper matte or bismuth copper matte, lead concentrate or sulphur, scrap iron or figured iron, and powdered coal in a certain ratio; adding the substances into the induction furnace to carry out reduction smelting for 2-3 hours under the temperature of 800-1000DEG C; separating metallic lead or bismuth from copper in the lead copper matte or the bismuth copper matte; heating at the temperature of 1200DEG C-1250DEG C and smelting for 2-3 hours for reducing the compound of lead or bismuth to generate metal lead or bismuth; charging copper into secondary matte to realize of the separation of copper, lead or bismuth; putting the secondary matte and coarse lead or coarse bismuth into an ingot mold; and crushing in a concentrating way to obtain the secondary matte, coarse lead or coarse bismuth. The treatment work is carried out in the electric induction furnace, the method is simple in production technology, the copper and the lead or bismuth can be more thoroughly separated from one another, and the method is high in metal recovery rate and less in pollution.

Description

technical field [0001] The invention relates to a metal smelting method, in particular to a method for depleting lead matte and bismuth matte by using an induction furnace. Background technique [0002] Lead matte and bismuth matte are the products of crude lead and coarse bismuth pyro-refining, smelting and decopper copper dross, which are reduced and smelted in a metallurgical furnace. The main components are lead or bismuth and copper, generally containing 10% lead or bismuth ~35%, copper 25%~35%. At present, the recovery of lead, bismuth, copper and other valuable metals in lead matte and bismuth matte mostly adopts blast furnace method and reverberatory furnace method for depletion process. Or high bismuth, high energy consumption, serious environmental pollution, short life of the furnace and other shortcomings. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the above-mentioned process, and provide a kind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00C22B7/00C22B15/00C22B13/02C22B30/06
CPCY02P10/20
Inventor 赵志强
Owner 长沙科力威蒸馏技术有限公司