Method for smelting lead-containing material

A material and melt technology, applied in the smelting field of lead-containing materials, can solve the problems of high precision operation technology, poor adaptability of raw materials, and high production cost, and achieve the effect of full utilization of waste heat, large production capacity and small heat loss.

Inactive Publication Date: 2011-05-04
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The above-mentioned process methods all have deficiencies, such as different environment, energy consumption and safety problems, and high production cost, troublesome operation, high accuracy of operation technical requirements, and poor adaptability of raw materials; today's requirements for energy saving and emission reduction of enterprises It is becoming more and more strict, especially due to the particularity of pyrometallurgy in terms of labor hygiene, and especially the shortage of resources, it is necessary to innovate the lead smelting process and equipment, and the smelting method for processing complex lead materials containing zinc, copper and other metals

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  • Method for smelting lead-containing material
  • Method for smelting lead-containing material
  • Method for smelting lead-containing material

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Experimental program
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Effect test

Embodiment 1

[0054] The treatment consists of low-grade lead oxide ore containing 16% Pb and high-grade lead sulfide ore containing about 70% Pb as the main ore, mixed with hydrometallurgy slag, lead precious metal system slag, pyrite and flux, after drying and crushing The powdery mixed lead material into the furnace contains about 40% of Pb, about 4% of Zn, about 1.5% of Cu, about 18% of S, and about 2500g / t of Ag. The powdery mixed lead material goes through the flash furnace ( 16) The central spray gun (1) is provided at the throat, and the oxygen-enriched gas with an oxygen volume ratio of 60% to 100% forms a high-speed jet at the throat, and the charge is introduced and dispersed into a mist through the bell mouth and sent to the reaction tower . 5-30mm carbon reducing agent is fed into the reaction tower (3) through the feeding device (2). According to the amount of pure oxygen fed per ton of mixed material into the furnace, the gas volume is 160-200Nm 3 According to calculation, ...

Embodiment 2

[0056]The treatment consists of low-grade lead oxide ore containing 30% Pb and low-grade lead sulfide ore containing about 35% Pb as the main ore, mixed with hydro-method zinc smelting slag, hydro-method copper smelting slag, pyrite and flux, and dried and crushed The powdery mixed lead material into the furnace contains about 25% of Pb, about 9% of Zn, about 0.8% of Cu, about 15% of S, and about 1100g / t of Ag, and the powdery mixed lead material goes through the flash furnace The central spray gun (1) of (16) is provided at the throat, and the oxygen-rich gas with a volume ratio of 60% to 100% forms a high-speed jet at the throat, and the charge is introduced and dispersed into a mist through the bell mouth and sent to the reaction. tower. 20-50mm carbon reducing agent is fed into the reaction tower (3) through the feeding device (2). According to the amount of pure oxygen fed per ton of mixed material into the furnace, the gas volume is 120-180Nm 3 According to the calcula...

Embodiment 3

[0058] The treatment consists of high-grade lead oxide ore containing 75% Pb and low-grade lead sulfide ore containing about 30% Pb as the main ore, mixed with hydro-method zinc smelting slag, hydro-method copper smelting slag, pyrite and flux, after drying and crushing The powdery mixed lead material into the furnace contains about 55% of Pb, about 6% of Zn, about 1.0% of Cu, about 12% of S, and about 1500g / t of Ag. The powdery mixed lead material goes through the flash furnace ( 16) The central spray gun (1) is provided at the throat, and the oxygen-enriched gas with an oxygen volume ratio of 60% to 100% forms a high-speed jet at the throat, and the charge is introduced and dispersed into a mist through the bell mouth and sent to the reaction tower . 5-20mm carbon reducing agent is fed into the reaction tower (3) through the feeding device (2). According to each ton of mixed material into the furnace, the amount of pure oxygen gas is 120-220Nm 3 According to calculation, a...

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Abstract

The invention discloses a method for smelting a lead-containing material, relating to the technological process for processing complex lead materials by utilizing a smelting method. The method is characterized in that a flash furnace and a depletion furnace are combined for smelting during the smelting process. The method of the invention has the advantages of short and continuous flow, energy saving, large capacity, efficient source utilization, environment protection, good safety and good industrial hygiene, no danger of foam slag exploration and safe production. The lead smelting process with high smelting strength and various advantages realizes single-step lead smelting, and has stronger adaptability on materials. The process is not only suitable for treating lead ore with complex components, but also suitable for treating wet smelting zinc slag, wet smelting copper slag and lead noble metal system slag, can do complementation of lead, zinc and copper and has more advantages overlead, zinc and copper jointed enterprises. The recovery rates of lead and concomitant valuable metals of copper, zinc and noble metals are higher.

Description

technical field [0001] The invention discloses a smelting method for lead-containing materials, which relates to a technological process for processing complex lead materials by adopting a smelting method. Background technique [0002] Lead is an important basic raw material for the development of the national economy. China is the world's largest lead producer and the second lead consumer after the United States. Lead smelting methods can be simply summarized into two categories: traditional method and direct lead smelting method. The traditional method is sintering-blast furnace smelting method (including sintering machine, sintering pot, sintering pan, etc.); the direct lead smelting method is a method in which the sintering process of lead sulfide concentrate is cancelled, and the raw concentrate is directly smelted in the furnace. The traditional sintering-blast furnace smelting method has been the main production method of lead for many years, and even now, its output...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B13/00C22B5/10C22B7/04
CPCY02P10/20
Inventor 王成彦陈治华尹飞郜伟宋元张郑晓斌岳青山
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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