Method and device for smelting jamesonite by bottom-blowing pool

A technology for brittle sulphur, lead and antimony ore and molten pool smelting is applied in the field of bottom blowing molten pool smelting method and device for brittle sulphur, lead and antimony ore, and can solve the problems of low concentration, many intermediate products, waste of sulfur resources and the like

Active Publication Date: 2011-01-05
JIYUAN YUGUANG NONFERROUS METALLURGY DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process is adopted by most lead-antimony smelting enterprises, and it is the only mature brittle sulfur-lead-antimony ore smelting process. However, the process still has long process, many intermediate products, many returned materials, low degree of automation of equipment, and low recovery rate of antimony and lead. , high production costs and other issues; in addition, due to process problems, the concentration of sulfur dioxide in the flue gas is unstable, and the concentration is low, making acid production difficult, which not only causes waste of sulfur resources, but also pollutes the environment
The traditional lead-antimony pyrometallurgical smelting process can no longer meet the requirements of sustainable development for the non-ferrous metallurgical industry. New technologies, new processes, and new equipment for lead-antimony smelting have been developed and used to gradually replace traditional processes with high energy consumption, heavy pollution, and low efficiency. It should be the development direction of lead-antimony smelting in the future
Patent document CN 101157994B discloses a method for smelting lead-antimony ore in an oxygen molten pool. Although lead-antimony alloys can be produced by one-step oxidation smelting, lead and antimony cannot be separated

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  • Method and device for smelting jamesonite by bottom-blowing pool

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Embodiment 1

[0070] Embodiment 1 A kind of bottom-blown molten pool smelting device of brittle sulfur-lead-antimony ore, see figure 2 , image 3 , including a bottom-blown oxidation furnace 1, a bottom-blown smelting furnace 2, a bottom-blown reduction furnace 3 and an electric front bed 4, and the bottom-blown oxidation furnace 1, bottom-blown smelting furnace 2 and bottom-blown reduction furnace 3 are all cylindrical horizontal type converter, the bottom of the furnace body is provided with gas spray gun ports 1.4, 2.4, 3.4 respectively, the top of the furnace body is respectively provided with exhaust ports 1.2, 2.2, 3.2 and feeding ports 1.3, 2.3, 3.3, and the end is provided with burner ports 1.1, 2.1, 3.1, slag outlets 2.5, 3.5, 4.2 are provided at the end or cylinder, siphon lead outlet 2.6 is provided at the end of bottom-blowing smelting furnace 2, and antimony outlet is provided at the side of bottom-blown reduction furnace 3 cylinder Port 3.6, which can be rotated when the fur...

Embodiment 2

[0077] Embodiment 2 A bottom-blown molten pool smelting method for brittle sulfur-lead-antimony ore. The gas lance installed at the bottom lance port 2.4 of the bottom-blown smelting furnace 2 is continuously injected with gas and oxygen-enriched air, and the pressure of the gas is not lower than 0.4MPa, the gas is producer gas or coke oven gas, and the volume ratio of gas to oxygen is 2.5 to 6;

[0078] Coal gas and oxygen are continuously sprayed into the gas lance installed at the bottom gas lance mouth 3.4 of the bottom blowing reduction furnace 3, the pressure of the gas is not lower than 0.4MPa, the gas is producer gas or coke oven gas, and the volume of oxygen is The ratio is 3 to 7;

[0079] The rest are the same as Example 1.

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Abstract

The invention relates to a method and a device for smelting jamesonite by a bottom-blowing pool. The method comprises the following steps of: performing pool smelting, oxidation and desulfurization on the jamesonite by using a bottom-blowing oxidation furnace to produce antimony-containing high-lead slag, a lead-antimony alloy and flue gases suitable for acid preparation; reducing the antimony-containing high-lead slag and blowing the lead-antimony alloy by using a bottom-blowing smelting furnace to produce antimony oxides and lead bullion capable of being used for electrolysis; and reducing the antimony oxides by using a bottom-blowing reduction furnace to produce needle antimony. In the smelting method of the invention, the three bottom-blowing furnaces and an electrically-heated settler are adopted to treat the jamesonite to produce the lead bullion, the needle antimony and the slag; therefore, compared with the prior art, the method has the advantages of short flow, good lead-antimony separation effect, fewer intermediate products, less revert, high resource utilization rate and production continuity; and the bottom-blowing oxidation furnace can realize spontaneous heating balance by sulfide combustion with low energy consumption and high recovery rate and can greatly reduce the cost.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method and device for smelting brittle sulfur-lead-antimony ore in a bottom-blown melting pool. Background technique [0002] my country has a large number of symbiotic complex polymetallic sulfide ores such as antimony, lead, zinc, and tin. Generally, such ores cannot obtain separate antimony concentrates through ore dressing, but only lead-antimony concentrates mainly composed of brittle sulfur-lead-antimony ores. In addition, it is also accompanied by a small amount of copper, silver, bismuth, tin, arsenic and other metals. With the decrease of single antimony ore resources in our country, the complex lead-antimony ore resources are relatively increasing. Therefore, the production of complex antimony ore such as brittle pyro-lead-antimony ore has become an inevitable trend in the development of my country's antimony industry. In recent years, some domestic scientific research insti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/02C22B13/02
CPCY02P10/20
Inventor 赵传合李贵赵振波刘素红陈会城杨明张和平狄聚才
Owner JIYUAN YUGUANG NONFERROUS METALLURGY DESIGN & RES INST CO LTD
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