Process and device for treating decopperized slag by adopting bottom-blowing molten pool to produce wet lead and raw copper

A molten pool smelting and crude lead technology, applied in the direction of improving process efficiency, etc., can solve the problems that environmental pollution will not be greatly improved, flue gas is difficult to recover, and slag is highly corrosive, so as to avoid adverse effects, leaching Less corrosion, good energy saving effect

Active Publication Date: 2010-05-12
JIYUAN YUGUANG NONFERROUS METALLURGY DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that the low concentration of SO 2 The flue gas is difficult to recover and pollutes the environment; the labor intensity is high and the working environment is poor; the thermal efficiency is low and the energy consumption is high; the furnace temperature changes greatly, the slag is highly corrosive, and the life of the furnace lining...

Method used

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  • Process and device for treating decopperized slag by adopting bottom-blowing molten pool to produce wet lead and raw copper
  • Process and device for treating decopperized slag by adopting bottom-blowing molten pool to produce wet lead and raw copper
  • Process and device for treating decopperized slag by adopting bottom-blowing molten pool to produce wet lead and raw copper

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Embodiment 1

[0042] Such as figure 1 As shown in the schematic diagram, embodiment 1: a process for producing crude lead and blister copper using bottom-blown molten pool smelting treatment to remove copper slag, the specific steps are as follows:

[0043] (1) Preparation of raw and auxiliary materials: After batching copper removal slag, stones, coke foam, iron filings and iron oxide powder according to the weight ratio of 1000:50:70:100:40, they are continuously quantitatively fed into the bottom blowing melting furnace for melting and reduction , settling and separating, producing crude lead and lead matte, and producing smelting slag, maintaining a molten pool of 600-1000mm deep in the furnace consisting of crude lead, lead matte and smelting slag, keeping the temperature at 1050-1200°C, and producing The crude lead is released continuously through the siphon port at one end of the bottom-blown smelting furnace, the lead matte is mixed with the smelting slag continuously and released t...

Embodiment 2

[0048] Such as figure 1 As shown in the schematic diagram, embodiment 2: a process for producing crude lead and blister copper using bottom-blown molten pool smelting treatment to remove copper slag, the specific steps are as follows:

[0049] (1), preparation of raw and auxiliary materials: after the copper removal slag, stones, coke foam, iron filings, and iron oxide powder are batched according to the weight ratio of 1000:50:70:100:40, the copper removal slag, stones, coke foam, iron Chips, iron oxide powder, blowing slag, returned soot and other copper-containing slags are metered and mixed, and then sent to the feeding port on the upper part of the bottom blowing smelting furnace by a belt feeder and continuously added into the furnace, and continuously quantitatively enter the bottom blowing smelting furnace. The raw and auxiliary materials after the furnace are melted, reduced, settled and separated. The natural gas and oxygen are sent into the molten pool through the m...

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Abstract

The invention belongs to the field of nonferrous metal, in particular to a process and a device for treating decopperized slag by adopting a bottom-blowing molten pool to produce wet lead and raw copper. A bottom-blowing smelter hearth is utilized to smelt decopperized slag to produce wet lead, furnace slag and lead copper matte, ferrum-silico-calcium slag is produced in the smelting process, the furnace slag serves as building material factory raw materials after meeting the disposal slag requirements, and a bottom-blowing converting furnace is utilized to convert the lead copper matte to produce raw copper. The process has low energy consumption, long service life of the furnace, high metal recovery efficiency, low product cost, high smelting environment protectiveness , easy realization of automatic control of process, and high labour productivity; the disposal slag contains low-grade valuable metal, and therefore, the disposal slag can be comprehensively utilized as raw materials in building material industry, which accords with the recycling economy principle.

Description

Technical field: [0001] The invention belongs to the field of nonferrous metallurgy, and in particular relates to a process and a device for producing blister lead and blister copper by adopting bottom-blowing molten pool smelting to process copper-removing slag. Background technique: [0002] In the process of lead smelting, whether crude lead is refined by pyrolysis or electrolytic refining, it is necessary to remove copper by pyrolysis at the beginning of refining. The main components of copper removal slag produced by fire copper removal are shown in the following table (see Table 1). [0003] Table 1: Analysis list of main elements of copper removal slag [0004] [0005] The purpose of fire treatment is to separate the main component lead in the copper removal slag, and enrich the copper in the form of matte copper. The matte obtained here contains Cu 2 In addition to S and FeS, it also contains a lot of PbS. Most lead smelters sell the matte to copper smelters ...

Claims

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Application Information

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IPC IPC(8): C22B15/00C22B13/02C22B7/04
CPCY02P10/20
Inventor 赵传和杨明刘素红张和平陈会成
Owner JIYUAN YUGUANG NONFERROUS METALLURGY DESIGN & RES INST CO LTD
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