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Copper extracting smelting technique for copper ore dressing tailings

A technology for copper smelting and tailings, which is applied to the improvement of process efficiency and other directions, can solve the problems of large power consumption of copper extraction, uneconomical power consumption, poor water permeability, inability to realize heap leaching or tank leaching, etc., and achieve reasonable reagent consumption and clear solution. , the effect of less impurities

Inactive Publication Date: 2010-11-03
JIANGXI COPPER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the flash smelting converter slag beneficiation tailings, the copper content is about 0.5%, of which about 50% is acid-soluble copper. Due to the low copper content in the tailings, it is uneconomical to use the stirring process to extract copper, and the tailings -325 The target fine powder accounts for more than 70%, and the water permeability is poor, so heap leaching or tank leaching cannot be realized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Tailings 240kg, gypsum 7.2kg, add 4800ml of concentrated acid, 24kg of water (made into 400g / l concentrated acid) to granulate, dry for 11 days, then put the granules into the tank for soaking, add 120 1 liter of water and 240ml of concentrated acid, soaking time is 5-10 hours, for the second soaking, add 120 liters of water and 240ml of concentrated acid, soaking time of 5-10 hours, combine the two leachate.

Embodiment 2

[0013] Tailings 1000kg, gypsum 30kg, add 20000ml of concentrated acid and 100kg of water (made into 360g / l concentrated acid) to granulate, dry for 7 days, then soak the granules in a tank, add 400 liters of water and 400ml of concentrated acid for the first soaking acid, soak for 3.5 hours and drain; for the second soak, add 330 liters of water and 300ml concentrated acid, soak for 3.5 hours and drain; for the third soak, add 300 liters of water and 300ml concentrated acid, soak for 19 hours and drain, and combine the three extractions.

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PUM

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Abstract

The invention provides a new technique for abstracting copper and smelting from copper concentration tailings, which comprises: adopting gypsum and sulphuric acid to evenly mix and granulate the tailings, ripening, drying, then, putting into a groove, adding dilute acid or industrial water to dip for many times until the tailings have no colors. The method has the advantages of simple technique, short reaction time, convenient operation, rational reagent consumption and little impurity content in solution which is leached, iron is correspondingly restrained, and the solution is clear, which is convenient for further electrowinning and abstracting the copper.

Description

Technical field: [0001] The invention relates to a new process for extracting copper from tailing slag after copper is selected from copper smelting converter slag. Background technique: [0002] In flash smelting converter slag beneficiation tailings, the copper content is about 0.5%, of which about 50% is acid-soluble copper. Due to the low copper content in the tailings, it is uneconomical to use the stirring process to extract copper, and the tailings -325 The target fine powder accounts for more than 70%, and the water permeability is poor, so heap leaching or tank leaching cannot be realized. Invention content: [0003] The purpose of the present invention is to provide a new process for copper extraction and smelting from copper beneficiation tailings. [0004] The purpose of the present invention can be achieved through the following schemes: [0005] Use gypsum and sulfuric acid to mix and granulate the tailings. After aging and drying, put them in a tank and ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B15/00
CPCY02P10/20
Inventor 郑春到欧阳辉肖珲赵鹭娜朱富庆
Owner JIANGXI COPPER CORP
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