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Method for improving recovery rate of valuable metals

A technology of valuable metals and recovery rate, which is applied in the direction of improvement of process efficiency, solid separation, flotation, etc., and can solve the problems of difficult separation of fine particles, reduction of production energy consumption, reduction of lead recovery rate, etc.

Active Publication Date: 2021-09-10
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above technical problems, the present invention provides a method for increasing the recovery rate of valuable metals, which can not only achieve efficient separation between minerals and effectively reduce the mutual inclusion of minerals, so as to effectively improve the recovery rate of copper, but also avoid the use of raw ore Fine grinding will cause difficulties in separating fine particles and lead recovery rate reduction caused by lead over-grinding, and also greatly reduce production energy consumption

Method used

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  • Method for improving recovery rate of valuable metals
  • Method for improving recovery rate of valuable metals
  • Method for improving recovery rate of valuable metals

Examples

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Effect test

Embodiment approach

[0062] (1) if Image 6 As shown, the method for improving the recovery rate of valuable metals proposed by the present invention may include: when the copper-zinc sulfide ore containing fine-grained copper minerals or the copper-lead-zinc sulfide ore containing fine-grained copper minerals are used as raw ore for ore dressing , copper mineral recovery is carried out in the following two steps:

[0063] ① Step 1: Use copper-zinc sulfide ore or copper-lead-zinc sulfide ore as the raw ore for moderate grinding (the moderate grinding refers to controlling the grinding fineness of the raw ore so that the monomer dissociation degree of the recyclable minerals in the raw ore reaches best degree of dissociation) to obtain the raw ore pulp; then use a highly selective collector (the collector with strong selectivity can adopt the BK301 collector in the prior art, or other collectors in the prior art can be used Selective collector) carry out copper flotation or copper-lead flotation t...

Embodiment 1

[0073] like Figure 8 As shown, a method to improve the recovery rate of valuable metals is used to treat a copper-lead-zinc sulfide ore containing fine-grained copper minerals. The treatment process is moderate grinding-copper-lead mixed flotation and copper-lead separation -zinc flotation-copper-sulfur mixed flotation-grinding-copper-sulfur separation flotation, it is for such as figure 1 The improvement of the existing process shown can specifically include: when the copper-lead-zinc sulfide ore containing fine-grained copper minerals is used as the raw ore for ore dressing, the copper minerals are recovered in the following two steps:

[0074] The first step: use the copper-lead-zinc sulfide ore containing fine copper minerals as the raw ore for grinding, and control the grinding fineness of the raw ore to -0.074mm, accounting for 80%, so that the monomers of the recyclable minerals in the raw ore are dissociated The degree of dissociation reaches the best degree, so as t...

Embodiment 2

[0078] like Figure 9 As shown, a method to improve the recovery rate of valuable metals is used to treat a copper-lead-zinc sulfide ore containing fine-grained copper minerals. The treatment process is moderate grinding-copper-lead mixed flotation and copper-lead separation - Zinc flotation - copper sulfur mixed flotation - roasting - leaching, it is for such as figure 1 The improvement of the existing process shown can specifically include: when the copper-lead-zinc sulfide ore containing fine-grained copper minerals is used as the raw ore for ore dressing, the copper minerals are recovered in the following two steps:

[0079] The first step: the same as the first step in Example 1.

[0080] Second step: adopt xanthate collector to carry out copper-sulfur mixed flotation to the zinc tailings (i.e. tailings containing fine-grained copper minerals) to obtain copper-sulfur concentrate and tailings; The concentrate is roasted to obtain calcined sand and flue gas (the flue gas ...

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Abstract

The invention discloses a method for improving the recovery rate of valuable metals. When copper-zinc sulphide ore or copper-lead-zinc sulphide ore is taken as raw ore for mineral separation, copper mineral recovery is carried out in the following two steps: step 1, the copper-zinc sulphide ore or copper-lead-zinc sulphide ore is taken as the raw ore for ore grinding to obtain raw ore pulp, then the raw ore pulp is subjected to flotation, most of copper minerals are recovered through flotation, most of micro-particle copper minerals are in an undissociated state and enter tailings, and the lead mineral content and the zinc mineral content of the tailings are allowed not to affect recovery of the copper minerals in the tailings, so the tailings containing the micro-particle copper minerals are obtained; and step 2, the copper minerals are recycled from the tailings containing the micro-particle copper minerals. According to the method, efficient separation of minerals can be achieved, mutual inclusion of the minerals can be effectively reduced, the purpose of effectively improving the recovery rate of valuable metal elements is achieved, the problems that fine particles are difficult to separate due to fine grinding of raw ores and that a lead recovery rate is reduced due to excessive grinding of lead are solved, and meanwhile, energy consumption of production is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of flotation of polymetallic sulfide ores containing copper and zinc, in particular to a method for improving the recovery rate of valuable metals. Background technique: [0002] At present, flotation of polymetallic sulfide ores containing various recyclable minerals (for example: copper-lead-zinc sulfide ores, copper-zinc sulfide ores, etc.) is a technical problem in the field of mineral flotation. [0003] Taking copper-lead-zinc sulfide ore as an example, the existing flotation separation technologies for copper-lead-zinc sulfide ore mainly include the following: ① The first is copper-lead mixed flotation-copper-lead separation-zinc-sulfur flotation process, including such figure 1 The shown copper-lead mixed flotation-copper-lead separation-zinc-sulfur priority flotation process and such as figure 2 The shown copper-lead mixed flotation-copper-lead separation-zinc-sulfur mixed separation flotation pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D103/02
CPCB03D1/00B03D2203/025Y02P10/20
Inventor 贺政赵志强罗思岗胡杨甲路亮
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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