Process for extracting copper by wet method from copper-containing sulfidization ore

A technology of sulfide ore and wet method, which is applied to the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems of poor process adaptability, environmental pollution, difficult to handle sulfuric acid, etc., and achieve a wide range of raw materials, easy process operation, copper The effect of high recovery rate

A technology of sulfide ore and wet method, which is applied to the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems of poor process adaptability, environmental pollution, difficult to handle sulfuric acid, etc., and achieve a wide range of raw materials, easy process operation, copper The effect of high recovery rate

CN101307387AActive Publication Date: 2008-11-19BEIJING GENERAL RES INST OF MINING & METALLURGY
0 Cites 21 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for extracting copper by wet method from copper-containing sulfidization ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Add 100g of finely ground 1# copper concentrate to the GSA type 2L vertical titanium-lined autoclave, the concentrate contains copper: 14.17%, iron: 31.63%, sulfur: 32.19%, 600ml leachate, the main component of the leachate: free H 2 SO 4 : 60g / L, Cu 2+ : 15g / L, Fe 3+ 35g / L, heated to 110°C, leaching time 4h, after the reaction, the slurry is thick, and the thick overflow is sent to the anode chamber of the electrolytic cell for oxidation, and the thick underflow enters the next stage of oxidation and iron removal, and the underflow concentration is 33%. The leaching rate of Cu in the closed atmospheric pressure leaching section is 42%, and the leaching rate of iron is 25%. The leach solution contains Cu30g / L and Fe40g / L.

[0056] The dense underflow of the first stage of closed atmospheric pressure leaching and the electrowinning catholyte enter the second stage of oxygen pressure iron removal and leaching. The reaction is carried out in a GSA type 2L vertical titan...

Embodiment 2

[0060] One-stage closed atmospheric pressure leaching test conditions: leaching temperature 130°C, leaching time 6h, leaching liquid-solid mass ratio 4:1, main components of leaching liquid: free H 2 SO 4 : 250g / L, Cu 2+ : 15g / L, Fe 3+ 35g / L, others are the same as Example 1, the Cu leaching rate of the closed atmospheric pressure leaching section is 45%, and the iron leaching rate is 36%. The leach solution contains Cu40g / L and Fe50g / L.

[0061] Two-stage oxygen pressure iron removal leaching test conditions: leaching temperature: 170°C, leaching time 4h, air is introduced during the reaction process, others are the same as Example 1, Cu leaching rate in oxygen pressure iron removal leaching section is 25%, total Cu leaching rate is 70% , the iron in the leaching solution enters the slag, and the Fe in the solution is <2g / L.

[0062] Three-stage enhanced oxidation leaching test conditions: leaching temperature 130°C, leaching liquid-solid mass ratio 4:1, Cu 0.5g / L in lea...

Embodiment 3

[0064] One-stage closed atmospheric pressure leaching test conditions: leaching temperature 80°C, leaching time 4h, leaching liquid-solid mass ratio 6:1, main components of leaching liquid: free H 2 SO 4 : 180g / L, Cu 2+ : 15g / L, Fe 3+ 35g / L, others are the same as Example 1, the Cu leaching rate of the closed atmospheric pressure leaching section is 40%, and the iron leaching rate is 25%.

[0065] Two-stage oxygen pressure iron removal leaching test conditions: leaching temperature: 80°C, leaching time 3h, hydrogen peroxide was introduced in the reaction process, the others were the same as in example 1, Cu leaching rate in the oxygen pressure iron removal leaching section was 25%, and the total leaching rate of Cu was 70%. , the iron in the leaching solution enters the slag in the form of goethite, and the Fe in the solution is <2g / L.

[0066] Three-stage enhanced oxidation leaching test conditions: leaching temperature 110°C, leaching liquid-solid mass ratio 6:1, Cu 0.5g / ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for extracting copper by a copper-containing sulphide ore wet method, which is characterized in that: (1) under the catalytic action of chloride ions, acid water solution containing ferric ions is used to leach a copper-containing sulphide ore, ore pulp is precipitated and then is divided into two parts of upper clear liquid and bottom current; (2) the upper clear liquid is sent into an anode chamber of a diaphragm electrolytic cell to perform the anode oxidation reaction to ferrous ions in the upper clear liquid to generate the ferric ions which are returned to step (1) to be served as leachate; the bottom current is leached out through oxidation iron removal and is subject to the solid-liquid separation; (3) solution obtained after the bottom current is leached out through the oxidation iron removal and is subject to the solid-liquid separation in the step (2) is sent into a cathode chamber of the diaphragm electrolytic cell to be electrowon to produce electrocopper, cathode waste liquid is returned to the step (1) to be leached; leaching residue, under the catalytic action of the chloride ions, oxidizes and leaches the copper in the leaching residue, and the leached copper is reclaimed through extraction-electrowinning. The method has short flow, small investment, low power consumption of electrowinning, wide applicable range of raw materials, easy process operation, and high copper recovery rate, and is environment-friendly and so on.

Description

technical field [0001] The invention relates to a method for extracting copper by wet method from copper-containing sulfide ore, relating to a method for wet-extracting copper from copper-containing sulfide ore, especially chalcopyrite. Background technique [0002] Wet copper extraction technology began in the 1960s, mainly dealing with copper oxide ore and secondary sulfide ore. About 20% of the current world production of copper is extracted from these resources by leaching-extraction-electrowinning technology. Copper concentrate with chalcopyrite as the main mineral is the main raw material of the copper industry. At present, almost all of this raw material adopts the traditional pyrometallurgy process, that is, the "smelting-blowing-refining" process. Therefore, pyrometallurgy still occupies the dominant position in current copper production. However, there are the following disadvantages in pyrometallurgy: (1) the investment cost is high, and large-scale production mu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
19 Nov 2008
Publication
CN101307387A
IPC
C22B15/00; C22B3/06; C25C1/12
CPC
Y02P10/20
Inventors
林江顺; 蒋开喜