Method for recycling copper minerals from high-sulfur rebellious copper ore step by step

A technology for copper ore and copper recovery, which is used in the step-by-step recovery of copper minerals, the flotation of high-sulfur refractory copper ore, the regrinding and re-election of medium ore, and the mixed flotation of complex high-sulfur refractory copper ore. It can solve the problems that copper minerals cannot be dissociated individually, the recovery rate of copper minerals is not high, and the separation of copper and sulfur is affected, so as to achieve the effect of saving beneficiation costs, easy operation and good recovery.

Inactive Publication Date: 2015-07-08
TONGLING NON FERROUS METAL GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the grinding particle size is too coarse, copper minerals cannot be dissociated individually, and the recovery rate of copper minerals is not high. In addition, copper minerals associated with sulfur minerals cannot be dissociated individually, and the copper loss rate in sulfur concentrate is too high.
If the grinding particle size is too fine, it will increase the cost of grinding, and at the same time, it will cause over-grinding of sulfur minerals, which is difficult to suppress in flotation and affect the separation of copper and sulfur.

Method used

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  • Method for recycling copper minerals from high-sulfur rebellious copper ore step by step
  • Method for recycling copper minerals from high-sulfur rebellious copper ore step by step

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0036] Example 2: (1), crushing and grinding: the raw ore is crushed and ground, and the particle size of -0.074mm accounts for 73%;

[0037] (2) Mixing and roughing: Send the broken ore after grinding into the flotation machine, add water to adjust the slurry concentration to 33%, add 80g / t butyl xanthate and 40g / t BK-301 and stir for 2.5min, Carry out flotation for 7 minutes to obtain copper and sulfur mixed concentrate and mixed roughing tailings;

[0038] (3) Mixed sweeping 1: add 10g / t butyl xanthate and 20g / t BK-301 to the mixed roughing tailings, stir for 3 minutes and send it to the flotation machine for 7 minutes to obtain middle ore 1 and mixed Sweeping 1 tailings;

[0039] (4) Mixed scavenging 2: add 10g / t butyl xanthate and 10g / t BK-301 to the tailings of mixed scavenging 1, stir for 3 minutes and send it to the flotation machine for 6 minutes to obtain middle ore 2 and Tailings, medium ore 2 returns to mixed sweeping 1, and tailings are discarded;

[0040] (5) ...

Embodiment 3

[0048] Example 3: (1), crushing and grinding: the raw ore is crushed and ground, wherein the particle size of -0.074mm accounts for 75%;

[0049] (2) Mixed roughing: add water to the crushed raw ore to adjust the concentration of the flotation pulp to 35%, add 100g / t butyl xanthate and 100g / t BK-301, stir for 3 minutes and float for 8 minutes to obtain copper , sulfur mixed concentrate and mixed rougher tailings;

[0050] (3) Mixed sweeping 1: Add 30g / t butyl xanthate and 30g / t BK-301 to the mixed roughing tailings, stir for 4 minutes and send it to the flotation machine for 8 minutes to obtain middle ore 1 and mixed Sweeping 1 tailings;

[0051] (4) Mixed sweeping 2: Add 15g / t butyl xanthate and 15g / t BK-301 to the tailings of mixed sweeping 1, stir for 4 minutes and send it to the flotation machine for 8 minutes to obtain middle ore 2 and Tailings, medium ore 2 returns to mixed sweeping 1, and tailings are discarded;

[0052] (5) Separation and concentration 1: add copper...

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Abstract

The invention discloses a method for recycling copper minerals from high-sulfur rebellious copper ore step by step. The method comprises the following steps: (1) crushing and grinding raw ore; (2) mixing and crude selection; (3) mixing and scavenging I; (4) mixing and scavenging II; (5) separation and fine selection I; (6) separation and fie selection II; (7) grinding of reground middling ore; (8) regrinding and crude selection; (9) regrinding and scavenging I; (10) regrinding and scavenging II; (11) regrinding and fine selection I; (12) regrinding and fine selection II. The beneficial effects are as follows: the method for recycling copper minerals from high-sulfur rebellious copper ore adopts mixing and bulk flotation, regrinding and selection of middling ores and step-by-step recycling; the method solves the problems of lower copper concentrate grade and recycling rate, over-high loss ratio of copper in sulfur concentrate caused by non-uniform copper and sulfur insetting grain size and thin copper ore insetting grain size; the method is important to improve economic benefits of enterprises and societies.

Description

technical field [0001] The present invention relates to the field of mineral processing, in particular to a method for flotation of high-sulfur refractory copper ore, more specifically, the present invention relates to mixed flotation of complex high-sulfur refractory copper ore, middle ore regrinding and re-election , Step-by-step recovery process of copper minerals. Background technique [0002] The ore processed by a mine in Tongling Nonferrous Metals is high-sulfur refractory copper ore. The copper minerals and sulfur minerals in the ore are mainly inlaid with medium and fine grains, and some are inlaid with coarse grains. The intercalation relationship between them is very close, and they often exist in the form of intercalated or wrapped together, sometimes They are filled and alternated along the fractures of each other in the shape of veinlets, and it is difficult to completely dissociate the monomers during the grinding process, which has a certain impact on the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/08B03B1/00
Inventor 代献仁王周和赵红芬丁鹏彭时忠赵结斌刘文胜程志龙李建华唐玉弟刘彬张应
Owner TONGLING NON FERROUS METAL GROUP CORP
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