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Ore-dressing process for extracting copper and silver

A technology, copper and silver technology, applied in the field of extraction of copper and silver by ore dressing, can solve the problems that affect the efficiency of enterprises, waste of resources, etc.

Active Publication Date: 2015-04-01
HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the physical and chemical properties of muddy and oxidized ores, the recovery rate of copper and silver generally does not exceed 65%, which seriously affects the benefits of enterprises and causes waste of resources.

Method used

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  • Ore-dressing process for extracting copper and silver
  • Ore-dressing process for extracting copper and silver
  • Ore-dressing process for extracting copper and silver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Grind the raw ore of the 3# inclined shaft of Baifang Copper Mine in Shuikou Mountain, and obtain 10t of beneficiation pulp after classification. The particle size of the beneficiation pulp is -106μm is 1.2t, and the particle size of -74μm is 1.08t. The concentration of slag in the 10t beneficiation pulp is 12wt %, the composition of the above raw ore is shown in Table 1; from the chemical multi-element analysis results of the raw ore in Table 1, it can be seen that copper and silver are valuable for recovery, and the oxidation rate of copper is 53.18%.

[0036] Add 1200g / t sodium sulfide, 400g / t isobutyl xanthate, 80g / t butyl xanthate and 200g / t terpineol oil to the pulp for roughing for 6 minutes to obtain 0.20t of coarse concentrate and 1.00t of coarse slag ; Concentrate the rough concentrate to obtain 0.108t concentrate and 0.092t middle ore 1; add 600g / t sodium sulfide, 200g / t isobutyl xanthate, 50g / t butylamine xanthate to the coarse slag Sweeping with 100g / t terp...

Embodiment 2

[0044] The 1# vertical shaft raw ore of Shuikoushan Baifang Copper Mine was ground, and after classification, 10t of pulp was obtained. The particle size in the pulp was -106μm1.4t, and the particle size was -74μm1.26t. The concentration of slag in the pulp was 14wt%;

[0045] Add 1500g / t sodium sulfide, 250g / t isobutyl xanthate, 90g / t butyl xanthate and 220g / t terpineol oil to the pulp for roughing for 6 minutes to obtain 0.32t rough concentrate and 1.08t rough slag ; Concentrate the rough concentrate to obtain 0.29t concentrate and 0.03t middle ore 1; add 600g / t sodium sulfide, 200g / t isobutyl xanthate, 60g / t butylamine xanthate to the coarse slag Sweeping with 100g / t terpineol oil for 8 minutes to obtain 0.14t of Zhongguo 2 and 0.94t of coarse slag; add 300g / t of sodium sulfide, 120g / t of isobutyl xanthate, and 30g / t of butylamine yellow to the above coarse slag Medicine and 80g / t pine alcohol oil were swept for 8 minutes to obtain 0.04t middling 3 and 0.90t tailings. Get ...

Embodiment 3

[0050] In a raw ore in Yunnan, the mudification rate is 55-70% (particle size -3mm), and the oxidation rate of copper in the raw ore is 75-85%. The above-mentioned raw ore is ground and graded to obtain 10t of ore pulp, and the particle size of the pulp is -106μm. 1.4t , wherein 1.26t with a particle size of -74 μm, the concentration of slag in the selected ore pulp is 14wt%;

[0051] Add 1200g / t sodium sulfide, 300g / t isobutyl xanthate, 80g / t butyl xanthate and 200g / t terpineol oil to the pulp for roughing for 6 minutes to obtain 0.35t of coarse concentrate and 1.05t of coarse slag ; Concentrate the rough concentrate to obtain 0.28t concentrate and 0.07t middle ore 1; add 600g / t sodium sulfide, 200g / t isobutyl xanthate, 40g / t butylamine xanthate to the coarse slag Sweeping with 100g / t terpineol oil for 8 minutes to obtain 0.12t of Zhongguo 2 and 0.93t of coarse slag; add 300g / t of sodium sulfide, 100g / t of isobutyl xanthate, and 30g / t of butylamine yellow to the above coarse ...

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Abstract

The invention provides an ore-dressing process for extracting copper and silver. The ore-dressing process comprises the following steps: (A) grinding raw ores, and grading the ground ores to obtain ore pulp; (B) carrying out rough concentration on the obtained ore pulp in the step (A) to obtain first rough concentrate and first coarse slag; (C) carrying out concentration on the obtained first rough concentrate to obtain concentrate and first middlings; scavenging first coarse slag to obtain second middlings and second coarse slag; (D) scavenging the second coarse slag to obtain third middlings and tailings; and (E) carrying out rough concentration on the first middlings, gradually returning the second middlings and third middllings to the previous step level by level, and finally obtaining concentrate and tailings. The process is used for extracting copper and silver from raw ore with high argillization rate and high oxidation rate, ore grinding is firstly carried out in the process for extracting the copper and silver, the ore grinding granularity, rough concentration and floatation agent are strictly controlled by virtue of a floatation process of rough concentration, scavenging and concentration, so that the recovery rate of copper and silver is relatively high. The experiment result shows that the recovery rate of the copper and silver can reach more than 90 percent.

Description

technical field [0001] The invention relates to the technical field of ore dressing, in particular to a process for extracting copper and silver through ore dressing. Background technique [0002] Baifang Copper Mine is a small and rich copper mine that is rare in China and even in the world. In the 1# shaft, 2# ore body and 3# ventilation wellhead of the Tonggutang mining area, there are high copper and silver grades, and the oxidation rate is relatively high. Ore with high mudification rate. The ore is earth-colored and earth-yellow in appearance, with yellow mud, gelatinous, disseminated, reticular and amorphous structures, and very few exist in veins. The useful minerals in the ore are mainly copper and silver. Copper minerals exist in the following forms: chalcocite, chalcopyrite, bornite, malachite, chrysocolla, azurite and a small amount of natural copper, which exist in gangues and their cracks. The cloth particle size is uneven in thickness. The copper grade of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B1/00B03D1/00
Inventor 曾贞明李加生
Owner HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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