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Oxygen-enriched strengthening smelting method for horizontal reduction furnace

A reduction furnace and oxygen-enriched technology, applied in the fields of metallurgy and chemistry, can solve the problems of high investment in the pulverized coal preparation system, slow temperature raising, and difficulty in compounding, so as to speed up the compounding and melting time, facilitate the distribution of materials, and achieve uniform distribution. Effect

Inactive Publication Date: 2020-09-29
个旧市锦星锑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, there is only one feeding port of the horizontal reduction furnace. On the top of the horizontal reduction furnace, near the fuel port, and natural gas, pulverized coal and coke are used as fuel and reducing agent, there is only one feeding port. Difficulty in chemical materials, slow heating speed and high energy consumption
[0004] In some special places where there is no supply of natural gas, the investment in pulverized coal preparation system is high, and the amount of fuel and reducing agent is small, only anthracite is used as fuel and reducing agent for horizontal furnaces, and horizontal furnaces using anthracite as fuel and reducing agent are basically No oxygen-enriched smelting

Method used

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  • Oxygen-enriched strengthening smelting method for horizontal reduction furnace
  • Oxygen-enriched strengthening smelting method for horizontal reduction furnace
  • Oxygen-enriched strengthening smelting method for horizontal reduction furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Lead-antimony-copper slag contains 60% lead, 10% antimony, 10% copper, and 5% sulfur; the particle size of pulverized coal is -200 mesh 80%, which contains 80% carbon, 1.5% sulfur, and 14% ash. Volatile content 5%; Lead-containing antimony-copper slag and anthracite are evenly proportioned according to a weight ratio of 100:3, and the prepared materials are loaded into the first feeding funnel 4 and the second feeding funnel 8, the first feeding funnel 4 And the second feeding funnel 8 is a square funnel, the first feeding funnel 4 bottoms are provided with the first feeding pipe 5, the second feeding funnel 8 bottoms are provided with the second feeding pipe 9, and the first feeding funnel 5 bottoms are provided with the first feeding pipe 5. A feeding port 6, the bottom of the second feeding pipe 9 is provided with a second feeding port 10, the first feeding pipe 5 and the second feeding pipe 9 are square, the length is 300mm, and the side length is 300mm, the first...

Embodiment 2

[0032]1) Lead-antimony-copper slag contains 70% lead, 6% antimony, 6% copper, and 3% sulfur; the particle size of pulverized coal is -200 mesh 85%, which contains 85% carbon, 0.7% sulfur, and 11% ash. The volatile matter is 3.5%, and the lead-containing antimony-copper slag and anthracite are evenly proportioned according to the weight ratio of 100:3, and the prepared materials are loaded into the first feeding funnel 4 and the second feeding funnel 8, the first feeding funnel 4 And the second feeding funnel 8 is a square funnel, the first feeding funnel 4 bottoms are provided with the first feeding pipe 5, the second feeding funnel 8 bottoms are provided with the second feeding pipe 9, and the first feeding funnel 5 bottoms are provided with the first feeding pipe 5. A feeding port 6, the bottom of the second feeding pipe 9 is provided with a second feeding port 10, the first feeding pipe 5 and the second feeding pipe 9 are square, the length is 400mm, the side length is 400mm...

Embodiment 3

[0037] 1) Lead-antimony-copper slag contains 80% lead, 2% antimony, 2% copper, and 1% sulfur; the particle size of pulverized coal is -200 mesh 90%, which contains 90% carbon, 0.1% sulfur, and 7% ash. The volatile matter is 2%, and the lead-containing antimony-copper slag and anthracite are evenly proportioned according to the weight ratio of 100:3, and the prepared materials are loaded into the first feeding funnel 4 and the second feeding funnel 8, the first feeding funnel 4 And the second feeding funnel 8 is a square funnel, the first feeding funnel 4 bottoms are provided with the first feeding pipe 5, the second feeding funnel 8 bottoms are provided with the second feeding pipe 9, and the first feeding funnel 5 bottoms are provided with the first feeding pipe 5. A feeding port 6, the bottom of the second feeding pipe 9 is provided with a second feeding port 10, the first feeding pipe 5 and the second feeding pipe 9 are square, the length is 500mm, the side length is 400mm, ...

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Abstract

The invention aims to provide an oxygen-enriched strengthening smelting method for a horizontal reduction furnace. The method is characterized in that lead-antimony-copper-containing slag and anthracite are uniformly compounded, two feeding funnels are adopted for feeding in two batches, the addition of the two batches of materials and the spraying-in of matched oxygen-enriched air are correspondingly controlled, the materials are gradually heated to the smelting temperature, smelting is conducted, and soda ash is added after smelting is completed for slagging; due to the fact that a 10-degreedip angle is formed between the oxygen-enriched smelting furnace and the ground, firstly, alkali slag is removed from a lead opening of the oxygen-enriched strengthening reduction furnace, and then oxygen-enriched reinforced reduction furnace slag is removed; and finally, an lead-antimony alloy is made into a casting ingot by a lead pump, matte copper on the surface of the lead-antimony alloy isremoved, and separate piling is conducted, so that the smelting time can be shortened, and the energy consumption can be reduced.

Description

technical field [0001] The invention relates to the technical fields of chemistry and metallurgy, in particular to a method for oxygen-enriched enhanced smelting in a horizontal reduction furnace. Background technique [0002] At present, domestic reduction furnaces are generally vertical furnaces, which have many supporting facilities, large floor space, high investment, and are not suitable for small enterprises with large fluctuations in raw material supply, small production scale, and flexible production organization. [0003] Generally, there is only one feeding port of the horizontal reduction furnace. On the top of the horizontal reduction furnace, near the fuel port, and natural gas, pulverized coal and coke are used as fuel and reducing agent, there is only one feeding port. There are problems such as difficulty in chemical material, slow heating speed and high energy consumption. [0004] In some special places where there is no supply of natural gas, the investme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/10C22B13/02C22B15/00C22B30/02C22B7/00
CPCC22B5/10C22B13/025C22B15/0052C22B30/02C22B7/001Y02P10/20
Inventor 张宝国
Owner 个旧市锦星锑业有限公司
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