A system and method for grinding and magnetically separating copper slag

A technology for grinding, magnetic separation, and copper slag, applied in the direction of improving process efficiency, can solve the problems of low iron concentrate grade, high operating cost, high environmental protection cost, and achieve high grade, reduce energy consumption, and good reduction effect. Effect
CN106367608BActive Publication Date: 2018-02-09JIANGSU PROVINCE METALLURGICAL DESIGN INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU PROVINCE METALLURGICAL DESIGN INST
Publication Date
2018-02-09

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Abstract

The invention discloses a system and method for treating copper slag through ore grinding and magnetic separation. The system comprises a rotary hearth furnace and ore grinding and magnetic separation equipment. The rotary hearth furnace comprises a feed inlet, a discharge outlet, an exhaust gas outlet, a pre-reduction layer and a reduction layer, wherein the pre-reduction layer is installed in a furnace body of the rotary hearth furnace and located above the reduction layer; the pre-reduction layer is of an open loop structure and is provided with a head end and a tail end, and a gap is reserved between the head end and the tail end in the horizontal direction; and the reduction layer is formed by building refractory materials and laid on the bottom of the rotary hearth furnace. According to the system and method for treating copper slag through ore grinding and magnetic separation, pre-reduction and reduction of pellets are carried out in the rotary hearth furnace, and the reduction effect is good; zinc-rich dust is obtained by collecting generated exhaust gas, and iron and zinc in copper slag are recovered simultaneously; and the system is simple, and the treatment capacity of the rotary hearth furnace is high.
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Description

technical field

[0001] The invention belongs to the field of waste utilization, in particular to a system and method for ore grinding and magnetic separation treatment of copper slag. Background technique

[0002] Precious metal resources are scarce and expensive, and more and more countries around the world pay more and more attention to them. Precious metal industrial waste is a very valuable secondary resource among the precious metal resources that are increasingly scarce in the world today. Effective treatment and utilization of these industrial waste has considerable economic benefits. value.

[0003] Copper slag is the slag produced in the copper smelting process, which is a kind of non-ferrous metal slag. The waste slag discharged from reverberatory furnace copper smelting is reverberatory furnace copper slag, and the waste slag discharged from blast furnace copper smelting is blast furnace copper slag. my country's copper production ranks first in the world. In th...

Claims

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