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Oxygen blowing and coal injection secondary lead smelting furnace and oxygen blowing and coal injection method

A technology for smelting furnace and regenerating lead, which is applied to coal injection regenerating lead smelting furnace and the fields of oxygen blowing, oxygen blowing and coal injection, can solve the problem of low smelting efficiency, coal powder cannot be directly injected into the molten liquid, and coal powder combustion is insufficient. and other problems, to achieve the effect of reducing slag production, shortening smelting time, and wide range of coal powder particle size.

Pending Publication Date: 2021-07-30
JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an oxygen-blowing and coal-injecting regenerated lead smelting furnace and an oxygen-blowing and coal-injecting method to solve the problems in the prior art that the pulverized coal is not fully combusted and the pulverized coal cannot be directly sprayed into the molten liquid, resulting in smelting The problem of inefficiency

Method used

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  • Oxygen blowing and coal injection secondary lead smelting furnace and oxygen blowing and coal injection method
  • Oxygen blowing and coal injection secondary lead smelting furnace and oxygen blowing and coal injection method
  • Oxygen blowing and coal injection secondary lead smelting furnace and oxygen blowing and coal injection method

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Embodiment 1: Oxygen blowing, coal injection regenerated lead smelting furnace includes: coal injection tank 1, pressure gauge 2, coal feeding valve 3, coal hopper 4, safety valve 5, air inlet valve 6, air inlet flowmeter 7, air inlet Pressure regulating valve 8, air injection pressure regulating valve 10, air injection flow meter 11, gas storage pressurization valve 12, air compressor 13, gas storage tank 14, coal injection machine 15, coal injection pipe 16, coal injection oxygen lance 17, oxygen Station 18, oxygen pressure regulating valve 19, oxygen flowmeter 20, compressed air pressure regulating valve 21, compressed air flowmeter 22 and melting furnace body 23;

[0060] The outlet at the bottom of the coal injection tank 1 is connected to the feed port 15-5 of the coal injection machine 15; the inlet end of the coal injection machine 15 is connected to the gas storage tank through the gas injection flow meter 11 and the gas injection pressure regulating valve 10 co...

Embodiment 2

[0091] Example 2: In figure 2 Among them, the oxygen-blowing and coal-injection regenerative lead smelting furnace also includes: a coal discharge valve 9; a coal discharge valve 9 is connected to the discharge port at the bottom of the coal injection tank 1; a coal injection machine 15 is connected to the outlet end of the coal discharge valve 9 . Others are the same as in Example 1.

Embodiment 3

[0092] Example 3: In Figure 8 Among them, there are no less than two outlets at the bottom of the coal injection tank 1 . A coal injection machine 15 is connected to each discharge port.

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Abstract

The invention discloses an oxygen blowing and coal injection secondary lead smelting furnace and an oxygen blowing and coal injection method, and belongs to the technical field of non-ferrous metal smelting. A discharge hole in the bottom of a coal injection tank is connected with a coal injection machine; the inlet end of the coal injection machine is connected with the gas outlet port of a gas storage tank, the outlet end of the coal injection machine is connected with a pulverized coal inlet of a coal injection oxygen lance through a coal injection pipe, and the coal injection oxygen lance is inserted into a smelting furnace body; a gas outlet port of the gas storage tank is communicated with the coal injection tank, and a gas inlet port of the gas storage tank is connected with an air compressor through an air storage pressurizing valve; an upper sealing top of the coal injection tank is also connected with a coal feeding valve, a pressure gauge and a gas inlet valve, and the upper inlet end of the coal feeding valve is connected with a coal hopper; an oxygen station is connected with an oxygen inlet of the coal injection oxygen lance; and the gas outlet port of the gas storage tank is connected with a compressed air inlet of the coal injection oxygen lance. The oxygen blowing and coal injection secondary lead smelting furnace has the advantages of simple structure and low manufacturing cost; combustion is more complete, and the smelting efficiency is improved; and the pulverized coal goes deep into molten liquid slag to accelerate the decomposition of lead sulfate, so that the consumption of scrap iron or iron ore is greatly reduced, and the slag yield is reduced.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to an oxygen blowing and coal injection regenerated lead smelting furnace and an oxygen blowing and coal injection method. Background technique [0002] When metal is smelted, it is necessary to add coal powder into the smelting furnace body. The function of coal powder in the smelting furnace body is to provide the heat required for the smelting process, and at the same time, it is also used as a reducing agent for reducing metals. There are various coal feeding methods and coal injection devices, basically all of which can meet the production needs. The conventional coal injection device is mainly composed of raw coal storage and transportation, coal powder preparation, coal powder transportation, coal powder injection, dry gas preparation and gas supply power system. Improper tank explosion often occurs, causing harm to equipment and even endangerin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K3/02F23N1/02F27D99/00C22B5/10C22B13/02
CPCF23K3/02F23N1/025F27D99/0003C22B5/10C22B13/02F23K2203/201
Inventor 杨春明
Owner JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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