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Copper ore processing technology

A processing process and technology for copper ore, applied in the field of processing technology of copper ore, can solve the problems of unfavorable copper extraction, unfavorable copper extraction in ammonium salt solution, large dissolution loss of extractant, etc., so as to shorten the leaching time and selectivity Strong, improve the effect of leaching rate

Inactive Publication Date: 2015-11-04
TIANJIN DEV ZONE JUNCHENG PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] When PH7, as the pH increases, the free NH in the solution 3 increase, copper ions form copper-ammonia complexes, the equilibrium shifts to the right, and the extractable free Cu 2+ The concentration drops, and the NH extracted into the organic phase 3 These factors are not conducive to the extraction of copper. Generally, acidic extractants have a high solubility in ammonium salt solutions, and almost all of them form ammonium soaps that dissolve into the water phase. The loss of extraction agent dissolution is large, which is not conducive to the extraction of copper in ammonium salt solutions.

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  • Copper ore processing technology

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Embodiment 1

[0069] The newly mined oxygen-sulfur mixed ore was selected and analyzed by non-ferrous geological tests: total copper: 1.8%, primary copper sulfide: 0.128%, secondary copper sulfide: 0.488%, free copper oxide: 1.12%, combined copper oxide: 0.064%, Vulcanization rate: 34.22%, oxidation rate: 65.78%, binding rate: 3.56%, after the mixed ore is crushed by sand making machine 1 with 6mm mesh, the particle size distribution is: <40 mesh accounts for 17%, 40 mesh -3mm accounts for 33%, 3-6mm accounts for 50%, put the crushed ore into the leaching tank 2, add the leaching agent in the leaching liquid heating tank 3, prepare the leaching liquid, and pump the leaching liquid into the leaching tank from the bottom of the leaching tank 2 with the pump A4 In 2, a certain amount of leaching agent is replenished every day, and the ore leaching process is completed after a leaching cycle of 20 days, and then the leaching solution is discharged from the drain port at the bottom of the leachin...

Embodiment 2

[0071] The leaching process in the present invention is: select the ore with a copper grade of 1.800% and a copper metal content of 162 kg, and add 9 tons (dry weight) of the ore into the leaching tank 2, and the measured specific gravity is 1.56t / m 3 According to the mineral composition, calculate the amount of leaching agent and oxidant that should be added, add the leaching agent and oxidizing agent in two stages, first add the leaching agent in the leachate heating tank 3, and configure a 3 Use a pump with a pump head of 40m to drive the leachate into the leaching tank 2 from the bottom of the leaching tank 2, so that the leachate can seep out evenly on the surface of the ore, and then according to the analysis of the concentration of copper in the leachate and the concentration of the leaching agent, daily Supplement a certain amount of leaching agent, after a leaching cycle of 20 days, complete the ore leaching process, draw the daily leached copper amount and leaching ra...

Embodiment 3

[0081] Extraction process in the present invention: the leachate in the high-level storage tank 8 flows into the extraction and stripping tank 9 by itself, and the high-level storage tank 8 is connected with the extraction tank through a reinforced plastic pipe, and a gate valve is connected therebetween to control the flow of the leachate. After mixing, it enters the clarification chamber, the organic phase is in the upper layer, the leachate is in the lower layer, and the raffinate is returned to the leaching system for recycling;

[0082] The extraction conditions are:

[0083] 1) The average copper concentration of the feed liquid is 4.0g / L, the extraction rate is 80%, and the processing capacity of the feed liquid is 313L / d, 12L / h;

[0084] 2) The extraction adopts one-stage extraction and one-stage back-extraction, the extraction ratio is 1:1, and the back-extraction ratio is 1.5-2:1;

[0085] 3) 2 sets of stirring motors, 1 set for extraction and 1 set for stripping, w...

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Abstract

The invention provides a copper ore processing technology suitable for copper ores of refractory and hard-leaching ores. The copper ore processing technology comprises the steps of leaching, extraction and electro-deposition. Smashed ores are added into a leaching tank, leaching liquid is pump into the leaching tank, the leaching liquid is discharged into a low-position storage tank after a leaching cycle and then is pumped into a high-position storage tank after being filtered by a filtration device, leaching liquid in the high-position storage tank automatically flows into an extract reverse-extraction box, an extract return to a leaching system for recycling, reverse-extraction liquid flows into an electro-deposition tank, and electro-deposition tail liquid flows into an electro-deposition tail liquid storage tank. The copper ore processing technology adopts a compound leaching agent, has good adaptability and vitality and is suitable for leaching of various copper ore resources. A Lix54-199 alkaline copper extraction agent is further used for extraction, so that facilities and equipment do not need anti-corrosion treatment, investment is reduced, the leaching agent can be recycled, cost is saved, and environmental pollution is avoided.

Description

[0001] technical field [0002] The invention relates to the technical field of hydrometallurgy, in particular to a copper ore treatment process. Background technique [0003] For Guihua Dacun Copper Mine, the average copper content of the ore in the whole area is 1.81%, which is mainly oxidized ore-based oxygen-sulfur mixed ore, and contains high calcium, magnesium, aluminum, and iron. The ore is processed by conventional mineral processing methods , so that the recovery rate of copper is low; moreover, the ore is an alkaline gangue, and the acid consumption is as high as 12-15t / tCu. If the ore is treated with hydrometallurgical acid leaching technology, it will cause compaction, which will cause difficulty in the penetration of the leachate, and the ore in the ore Sulfide ore is not easy to be leached, so the ore belongs to the refractory and refractory ore that is difficult to process by traditional methods. Therefore, it is of great practical significance and broad appli...

Claims

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Application Information

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IPC IPC(8): C22B3/04C22B3/26C22B15/00C25C1/12
CPCY02P10/20
Inventor 苏建强
Owner TIANJIN DEV ZONE JUNCHENG PAPER IND
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