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A method for extracting valuable metals from low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores

A sulfide ore and polymetallic technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve problems such as poor adaptability, difficult operation, and adverse environmental effects

Inactive Publication Date: 2017-12-08
四川有色金砂选矿药剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Full flotation process There are many kinds of flotation reagents added, and some flotation reagents have certain toxic and side effects, which will have certain adverse effects on the environment
[0006] (2) Gravity separation-flotation process The tailings produced by the gravity separation process need to be further concentrated to meet the subsequent flotation process, which is difficult to operate
[0007] (3) The adaptability of the process flow to ore resources The existing separation technology has poor adaptability to the processing of extremely low-grade copper-lead-zinc polymetallic sulfide ore resources, and the process flow indicators are not good

Method used

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  • A method for extracting valuable metals from low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores
  • A method for extracting valuable metals from low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores
  • A method for extracting valuable metals from low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Copper-lead-zinc-iron polymetallic sulfide ore from Hanyuan area of ​​Sichuan is used as raw material. The raw ore copper grade is 0.15%, lead grade is 1.08%, zinc grade is 0.88%, and iron grade is 22.64%.

[0031] Such as figure 1 As shown, a method for processing low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores to extract valuable metals comprises the following steps:

[0032] S1. Ore crushing and primary grinding stage: The raw material low-grade copper-lead-zinc-iron-iron polymetallic sulfide ore is crushed by a crusher to a particle size of less than 5mm, and then the sample with a particle size of less than 5mm is ground to a particle size by a rod mill. The mineral aggregates with a diameter of ≤0.154mm accounted for 85% of the total mineral aggregate weight;

[0033] S2, spiral chute re-election pre-selection stage: the ore obtained in step S1 is pre-selected by spiral chute re-election to obtain copper-lead-zinc-iron mixed concentrate;

[0034] ...

Embodiment 2

[0045]Copper-lead-zinc-iron polymetallic sulfide ore from Lanping, Yunnan Province is used as raw material. The ore copper grade is 0.18%, lead grade is 0.86%, zinc grade is 1.15%, and iron grade is 23.66%.

[0046] Such as figure 1 As shown, a method for processing low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores to extract valuable metals comprises the following steps:

[0047] S1. Ore crushing and primary grinding stage: The raw material low-grade copper-lead-zinc-iron-iron polymetallic sulfide ore is crushed by a crusher to a particle size of less than 5mm, and then the sample with a particle size of less than 5mm is ground to a particle size by a rod mill. Mineral materials with a diameter of ≤0.154mm account for 80% of the total weight of mineral materials;

[0048] S2, spiral chute re-election pre-selection stage: the ore obtained in step S1 is pre-selected by spiral chute re-election to obtain copper-lead-zinc-iron mixed concentrate;

[0049] S3. Copper...

Embodiment 3

[0060] The copper-lead-zinc-iron polymetallic sulfide ore in Xishuangbanna, Yunnan Province is used as raw material. The ore copper grade is 0.22%, lead grade is 1.05%, zinc grade is 1.24%, and iron grade is 19.65%.

[0061] Such as figure 1 As shown, a method for processing low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores to extract valuable metals comprises the following steps:

[0062] S1. Ore crushing and primary grinding stage: The raw material low-grade copper-lead-zinc-iron-iron polymetallic sulfide ore is crushed by a crusher to a particle size of less than 5mm, and then the sample with a particle size of less than 5mm is ground to a particle size by a rod mill. Mineral materials with a diameter of ≤0.154mm account for 90% of the total weight of mineral materials;

[0063] S2, spiral chute re-election pre-selection stage: the ore obtained in step S1 is pre-selected by spiral chute re-election to obtain copper-lead-zinc-iron mixed concentrate;

[0064] S...

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Abstract

The invention discloses a method for extracting valuable metals from low-grade copper-lead-zinc-iron polymetallic sulfide ores, comprising the following steps: S1, ore crushing, and a stage of grinding; S2, a spiral chute re-selection pre-selection stage; S3, copper Lead-zinc-iron mixed concentrate drying stage; S4, sulfated roasting stage; S5, second-stage grinding stage; S6, wet leaching stage; S7, solid-liquid separation stage; S8, using electrowinning process to process leachate to obtain cathode copper Products, the remaining liquid is evaporated and crystallized to obtain zinc sulfate products; S9, the leached slag is subjected to strong magnetic separation to obtain iron concentrates, and non-magnetic products are recovered by shaking table gravity to obtain lead concentrates. The beneficial effects of the present invention are: the comprehensive utilization of valuable metals copper, lead, zinc and iron in low-grade copper-lead-zinc-iron-iron polymetallic sulfide ore resources can be realized, and various products can be obtained; , and no additional chemicals are added in the beneficiation process.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for extracting valuable metals from low-grade copper-lead-zinc-iron-iron polymetallic sulfide ores. Background technique [0002] Copper, lead, and zinc are traditional types of non-ferrous metals. The demand for non-ferrous metal resources at home and abroad is still on the rise. The beneficiation of copper-lead-zinc polymetallic sulfide ore generally adopts flotation process, but with the intensification of the development of ore resources, the resources of easy-to-select rich ore are facing shortage, and the difficulty of ore sorting is increasing. The traditional flotation process technology can no longer meet the requirements Demand for the development of low-grade copper-lead-zinc polymetallic sulfide ore resources. [0003] At present, the existing known technologies are: (1) the invention patent of "a mineral processing method for separating copper-le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 肖军辉施哲陈金花汤小军官长平徐国栋周怡玫邓星星李辉张平杨云
Owner 四川有色金砂选矿药剂有限公司
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