Method for recovering copper, iron and silicon from copper smelting slag

A technology for copper smelting slag and copper recovery, applied in the field of copper smelting, can solve problems such as difficult control, poor practicability, and long process flow

Inactive Publication Date: 2015-02-11
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned method for separating iron, copper, and silicon components from coppe...

Method used

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  • Method for recovering copper, iron and silicon from copper smelting slag
  • Method for recovering copper, iron and silicon from copper smelting slag
  • Method for recovering copper, iron and silicon from copper smelting slag

Examples

Experimental program
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Effect test

Embodiment 1

[0064] use figure 1 The process flow shown is the floating magnetic combined process, which is used to recover copper, iron and silicon in hot copper smelting slag. figure 1 It is a process flow diagram for recovering copper, iron and silicon in Example 1 of the present invention.

[0065] The hot-melt slag discharged from the flash smelting furnace is treated as the treatment object, the copper grade of which is 1.0% to 1.6%, and the temperature is within the range of 1000°C to 1350°C. When discharging slag, put hot molten slag into a special slag bag, and oxidize it by passing industrial pure oxygen into the slag in the slag bag. Control the flow rate of oxygen to 18m 3 / min, the oxidation time is 15min, and the mixed slag containing hematite, copper oxide ore and quartz ore is obtained.

[0066] Then, the above-mentioned slag bag is transported to the slag cooling field by a slag bag car, and it is naturally cooled for 24 hours, and then sprayed with water for 36 hours. ...

Embodiment 2

[0072] use figure 2 The process flow shown is the floating magnetic combined process, which is used to recover copper, iron and silicon in hot copper smelting slag. figure 2 It is a process flow chart of recovering copper, iron and silicon in Example 2 of the present invention.

[0073] The hot-melt slag discharged from the flash smelting furnace is treated as the treatment object, the copper grade of which is 1.0% to 1.6%, and the temperature is within the range of 1000°C to 1350°C. When discharging slag, put hot molten slag into a special slag bag, and oxidize it by passing industrial pure oxygen into the slag in the slag bag. Control the flow rate of oxygen to 18m 3 / min, the oxidation time is 15min, and the mixed slag containing hematite, copper oxide ore and quartz ore is obtained.

[0074] Then, the above-mentioned slag bag is transported to the slag cooling field by a slag bag car, and it is naturally cooled for 24 hours, and then sprayed with water for 36 hours. ...

Embodiment 3

[0080] use image 3 The process flow shown is the process of floating magnetism-leaching-extraction-electrodeposition, which is used to recover copper, iron and silicon in hot copper smelting slag. image 3 It is a process flow chart of recovering copper, iron and silicon in Example 3 of the present invention.

[0081] The hot-melt slag discharged from the one-step copper smelting furnace is used as the treatment object, the copper content of which is 3% to 10%, and the temperature is within the range of 1000°C to 1350°C. When discharging slag, put hot molten slag into a special slag bag, and oxidize it by passing industrial pure oxygen into the slag in the slag bag. Control the flow rate of oxygen to 20m 3 / min, the oxidation time is 20min, and the mixed slag containing hematite, copper oxide ore and quartz ore is obtained.

[0082] Then, the above-mentioned slag bag is transported to the slag cooling field by a slag bag car, and it is naturally cooled for 24 hours, and th...

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Abstract

The invention provides a method for recovering copper, iron and silicon from copper smelting slag. The method comprises the following steps: (a) adopting oxygen to oxidize hot copper smelting slag to obtain mixed slag charge, wherein the temperature of the hot copper smelting slag is 1000-1350DEG C, and the mixed slag charge comprises hematite, copper oxide ore and quartz mine, and carrying out slow cooling processing on the mixed slag charge; (b) recovering the hematite from the mixed slag charge subjected to the slow cooling processing in the step (a) through flotation and magnetic separation, receiving a copper-contained product through activation flotation or leaching, and finally filtering tailings subjected to hematite recovery and the copper-contained product to obtain a silicon-contained product. The method provided by the invention has the advantages of short flow, simple technology, easiness in realization and control, wide use range, high practicality and the like and basically meets copper smelting slag resourceful processing requirements of the copper smelting industry. In addition, the method for recovering the copper, the iron and the silicon from the copper smelting slag, which is provided by the invention, does not generate secondary wastes, is free from pollution and has little energy input.

Description

technical field [0001] The invention belongs to the technical field of copper smelting, in particular to a method for recovering copper, iron and silicon from copper smelting slag. Background technique [0002] Copper smelting slag mainly includes copper smelting slag and one-step copper smelting slag. At present, the vast majority of copper smelting slag is copper smelting slag. Copper smelting slag is a kind of slag produced in the copper smelting process, which mainly contains: 0.90% to 3.0% Cu, 35% to 44% Fe and 26.6% to 35.0% SiO 2 . The world's focus on the treatment of copper smelting slag is currently on the recovery of copper, mainly using pyrolysis and beneficiation dilution processes. In the beneficiation and depletion process, the vast majority of metal copper is recovered; for the tailings after copper separation, a few enterprises use the magnetic separation process to recover iron minerals, but since the iron minerals are mainly fayalite, Fayalite is a comp...

Claims

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Application Information

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IPC IPC(8): C22B7/04
CPCY02P10/20
Inventor 耿联胜
Owner YANGGU XIANGGUANG COPPER
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