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Method for composite smelting of copper concentrate flash-molten bath and outokumpu flash furnace

A flash furnace and copper concentrate technology, which is applied in furnaces, electric furnaces, rotary drum furnaces, etc., can solve the problems of insufficient use of hearth area and low intensity of metallurgical process, so as to improve production capacity and reduce slag content Copper, the effect of improving properties

Inactive Publication Date: 2013-01-16
TONGLING NON FERROUS METAL GROUP CORP
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Problems solved by technology

Although the current sedimentation tank has a large area, the intensity of the metallurgical process is very low, and the hearth area has not been fully utilized. If the sedimentation tank can be used for melting pool smelting, it will improve the production capacity of the flash furnace and reduce the copper content in the slag. There is still great improvement in

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  • Method for composite smelting of copper concentrate flash-molten bath and outokumpu flash furnace

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Embodiment Construction

[0014] The flash-melting pool composite smelting method of copper concentrate in this embodiment, the smelting process of this embodiment is carried out in an Outokumpu flash furnace, and the Outokumpu flash furnace of this embodiment is as follows figure 1 As shown, the design of the furnace body of the reaction tower, the configuration of the metering and adding system of solid materials, the design of the concentrate nozzle, and the configuration of the fuel gun all remain unchanged from the original design of the flash smelting; the copper concentrate and dust returned by the reaction tower , flux and other solid materials and their processing capacity remain unchanged; the process control methods of heat balance and material balance remain unchanged. Install 6~10 air-material high-speed spray guns on the top of the sedimentation tank at the outlet of the reaction tower, and insert them into the sedimentation tank from the top of the sedimentation tank, 300~500mm away from ...

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Abstract

The invention discloses a method for composite smelting of a copper concentrate flash-molten bath and an outokumpu flash furnace. The method for composite smelting comprises the following steps: (1) dried copper concentrate, quartz sand, return dust, oxygen-enriched air and natural gas are injected into a reaction tower of the outokumpu flash furnace for flash smelting through a concentrate nozzle and a fuel nozzle, and then enter a sedimentation tank of the outokumpu flash furnace; (2) copper matte and slag are further generated in the sedimentation tank, and clarification separation is carried out; the slag on a melt is discharged out of the sedimentation tank through an overflow port in a sedimentation wall, so that the flash smelting is finished; and solid reducing agents are sprayed to the surface of the melt at high velocity through air or the oxygen-enriched air. By adopting the method, the yield of the outokumpu flash furnace is greatly improved, the clarification separation from the copper matte is accelerated, and the copper which is contained in the slag is reduced.

Description

technical field [0001] The invention relates to a copper concentrate smelting method used in an Outokumpu flash furnace and an Outokumpu flash furnace for realizing the method. Background technique [0002] Modern advanced copper sulfide concentrate smelting processes include flash smelting and bath smelting. Flash smelting mainly includes Outokumpu flash smelting (Outokumpu) and Inco (Inco) flash smelting processes. Bottom blowing process (Shuikoushan method), oxygen-enriched side blowing (Noranda method, Vanyukov method, Jinfeng method, Baiyin method, etc.), oxygen-enriched top blowing (Mitsubishi method, etc.), submerged top blowing method (Isa method, Osmert method, etc.). Outokumpu flash furnace is composed of three parts: reaction tower, sedimentation tank and ascending flue. Copper concentrate is sprayed from the concentrate nozzle on the top of the reaction tower. The oxidation reaction process and part of matte and slag are completed in the reaction tower. In the ...

Claims

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Application Information

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IPC IPC(8): C22B15/00
Inventor 周俊陈卓张劲松
Owner TONGLING NON FERROUS METAL GROUP CORP
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