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
CN102876902AInactive Publication Date: 2013-01-16TONGLING NON FERROUS METAL GROUP CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGLING NON FERROUS METAL GROUP CORP
Publication Date
2013-01-16
Estimated Expiration
Not applicable · inactive patent

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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.
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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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