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An operation method for starting the cold material in the oxygen-enriched side-blowing molten pool copper smelting process

An operation method and oxygen-enriched technology, applied in furnaces, electric furnaces, rotary drum furnaces, etc., can solve the problems of large power consumption and electrode consumption, long time required, high furnace start-up cost, etc. low intensity effect

Active Publication Date: 2017-02-08
CHIFENG FUBANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is expensive to start the furnace and consumes a lot of electric energy and electrodes; in addition, it takes a long time for the electric furnace to melt the material, generally it can reach more than ten days, which seriously affects the production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 An operation method for starting the cold material in the oxygen-enriched side-blowing molten pool copper smelting process, the following steps are adopted:

[0015] (1) Build the foundation of the material column: put firewood with a moisture content of ≤20% into the oxygen-enriched side-blowing furnace, and ignite the wood until the height of the firewood reaches 0.5m above the primary tuyere, and keep the firewood in a burning state during the process of putting in the firewood , After the firewood is put in, open the primary tuyere, control the pressure of the primary tuyere at 10KPa, use the primary tuyere to send air to support the combustion, make the firewood fully burnt, and start to put in coke. The feeding port is put into the oxygen-enriched side-blowing furnace as bottom coke. The bottom coke is mainly used for heat preservation of the molten melt to prevent the melt from solidifying again after reaching the bottom of the furnace. The amount of cok...

Embodiment 2

[0019] Example 2 An operation method for starting the cold material in the oxygen-enriched side-blowing molten pool copper smelting process adopts the following steps:

[0020] (1) Build the foundation of the material column: put firewood with a moisture content of ≤20% into the oxygen-enriched side-blowing furnace, and ignite the wood until the height of the firewood reaches 0.8m above the primary tuyere, and keep the firewood in a burning state during the process of putting in the firewood , After the firewood is put in, open the primary tuyere, control the pressure of the primary tuyere at 15KPa, use the primary tuyere to send air to support the combustion, make the firewood fully combustible, and start to put in coke. The feeding port is put into the oxygen-enriched side blowing furnace as the bottom coke. The bottom coke is mainly used for the heat preservation of the molten melt to prevent the melt from solidifying again after reaching the bottom of the furnace. The amoun...

Embodiment 3

[0024] Example 3 An operation method for starting the cold material in the oxygen-enriched side-blowing molten pool copper smelting process adopts the following steps:

[0025] (1) Build the foundation of the material column: put firewood with a moisture content of ≤20% into the oxygen-enriched side-blowing furnace, and ignite the wood until the height of the firewood reaches 0.7m above the primary tuyere, and keep the firewood in a burning state during the firewood input process , After the firewood input is completed, open the primary tuyere, control the pressure of the primary tuyere at 13KPa, use the primary tuyere to send air to support the combustion, make the firewood fully combustible, and start to put in coke. The feeding port is put into the oxygen-enriched side-blown furnace as bottom coke. The bottom coke is mainly used for heat preservation of the molten melt to prevent the melt from solidifying again after reaching the bottom of the furnace. The amount of coke inp...

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Abstract

The invention discloses a cold metal blowing-in operation method of an oxygen-enriched side-blown bath copper smelting process. Such materials as matte furnace slag and cokes are mixed, and are directly fed into an oxygen-enriched side-blown furnace by a charging belt; oxygen-enriched air is fed from a primary air port; the cokes are combusted to release heat to melt such materials as the matte furnace slag; a bath is formed in the oxygen-enriched side-blown furnace; and after the depth of the bath reaches the production demand, a copper concentrate is fed to normal production. The method mainly comprises four steps of building of a material column foundation, formation of material columns, elimination of the material columns and beginning of normal production. The method is short in blowing-in time and low in cost, generates no environmental pollution, and effectively reduces the labor intensity.

Description

technical field [0001] The invention relates to the process technology in the field of non-ferrous metal smelting, in particular to an operation method for starting a cold material in an oxygen-enriched side-blowing molten pool copper smelting process. Background technique [0002] Oxygen-enriched side-blowing molten pool copper smelting process has been widely used in China due to a series of characteristics such as small investment, strong adaptability to materials, and simple operation. During the production process, materials are put into the furnace from the top of the furnace, oxygen-enriched air is blown into the slag layer through the tuyeres, and the matte-making smelting reaction occurs between the materials and oxygen in the smelting slag layer to complete the mass transfer and heat transfer process. Oxygen-enriched air is directly blown into the smelting slag layer, which strongly agitates the smelting slag, and the small matte particles produced by matte smeltin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B15/00
Inventor 罗银华王志超王治永李国军刘丹舟陈鹏泽单志敏展宏图赵龙虎宋大勇
Owner CHIFENG FUBANG COPPER
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