Method for smelting lead-containing material

A technology of materials and melts, which is applied in the field of smelting lead-containing materials, can solve the problems of high precision of operation technical requirements, low adaptability of raw materials, high production costs, etc., and achieve the effects of full utilization of waste heat, large production capacity and low heat loss

Inactive Publication Date: 2010-07-07
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
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  • 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 e

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

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The processing consists of 16% low-grade lead oxide ore containing Pb and high-grade lead sulfide ore containing about 70% Pb, mixed with hydrometallurgical copper slag, lead precious metal system slag, pyrite and flux, and dried and crushed The powdered 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 mixed lead material of powdered into the furnace is passed through the flash furnace ( 16) The central spray gun (1) is given at the mouth of the throat, oxygen-enriched gas with a volume ratio of 60% to 100% oxygen is jetted at the mouth of the throat at a high speed, the charge is introduced and dispersed into the reaction tower through the horn mouth. . 5-30mm carbon reducing agent is fed into the reaction tower (3) through the feeding device (2). The amount of pure oxygen gas is 160~200Nm per ton of the mixture into the furnace 3 In total, after mixing, the oxidation-reduction...

Embodiment 2

[0056] The main ore is processed by 30% low-grade lead oxide ore containing Pb and 35% low-grade lead sulfide ore, mixed with hydrometallurgical zinc slag, hydrometallurgical copper slag, pyrite and flux, and dried and crushed After entering the furnace in powder form, the mixed lead material contains about 25% of Pb, about 9% of Zn, about 0.8% of Cu, about 15% of S, and about 1100g / t of Ag. The mixed lead material is put into the furnace and passed through the flash furnace. (16) The central spray gun (1) is given at the mouth of the throat, and oxygen-enriched gas with a volume ratio of 60% to 100% oxygen is jetted at the mouth of the throat at a high speed, and the charge is introduced and dispersed into a mist through the horn and sent to the reaction. tower. The 20-50mm carbon reducing agent is fed into the reaction tower (3) through the feeding device (2). The amount of pure oxygen gas is 120~180Nm per ton of the mixture into the furnace 3 In total, after mixing, the oxi...

Embodiment 3

[0058] The main ore is processed by high-grade lead oxide ore containing 75% Pb and low-grade lead sulfide ore containing 30% Pb, mixed with hydrometallurgical zinc slag, hydrometallurgical copper slag, pyrite and flux, and dried and crushed The powdery mixed lead material entering 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 mixed lead material of powdered enters the furnace through the flash furnace ( 16) The central spray gun (1) is given at the mouth of the throat, oxygen-enriched gas with a volume ratio of 60% to 100% oxygen is jetted at the mouth of the throat at a high speed, the charge is introduced and dispersed into the reaction tower through the horn mouth. . 5-20mm carbon reducing agent is fed into the reaction tower (3) through the feeding device (2). The amount of pure oxygen gas is 120~220Nm per ton of the mixture into the furnace 3 After mixing, the oxidation-reduction reaction is carried o...

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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 over lead, 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] A smelting method for lead-containing materials relates to a process of processing complex lead materials by 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 methods and direct lead smelting methods. The traditional method is the sintering-blast furnace smelting method (including sintering machine, sintering pot, sintering pan, etc.); the direct lead smelting method eliminates the sintering process of lead sulfide concentrate, and the raw concentrate is directly smelted into the furnace. For many years, the traditional sintering-blast furnace smelting method has been the main production method of lead. Even now, its output still accounts for more than 60% of the world's lead output. However, with t...

Claims

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Application Information

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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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