Method for increasing metal recycling rate of complex lead-zinc ore

A technology of lead-zinc mine and recovery rate, which is applied in the field of flotation to achieve good economic benefits, increase the recovery rate of lead and zinc, and improve the effect of recovery rate

Inactive Publication Date: 2018-01-05
内蒙古森泰企业咨询有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the actual mining of complex lead-zinc mines and the deficiencies of existing flotation technology, the present invention mainly provides a method for improving the flotation recovery rate of complex lead-zinc mines

Method used

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  • Method for increasing metal recycling rate of complex lead-zinc ore
  • Method for increasing metal recycling rate of complex lead-zinc ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Inner Mongolia Zhalantun City Guosen Mining Co., Ltd. lead-zinc-silver polymetallic mine, the first stage of grinding to -200 mesh accounts for about 55% of the raw ore, and the lead roughing under the condition of medium alkalinity is adopted. After adding sulfide ore beneficiation agents, the first The foam products in the slots contain more than 40% lead and about 15% zinc, and they are directly entered into the process of selection 3; the foam products of the remaining three slots after rough selection enter the process of selection 1. This not only ensures the flotation concentrate grade of lead sulfide ore, but also improves the recovery rate.

Embodiment 2

[0024] In the lead-zinc-silver polymetallic mine of Zhalantun Guosen Mining Co., Ltd., Inner Mongolia, during the lead separation process, sulfide ore and high-efficiency oxide ore collectors are added to the lead roughing tailings gate box (sweeping 1) at the same time , the foam product obtained in Sweeping 1 enters the Sweeping 1 process after regrinding; Sweeping 2 and Sweeping 3 are also added with sulfide ore and high-efficiency oxidized ore collectors, and the medium ore products are returned in sequence. In this way, both fine particle lead sulfide and lead oxide are partially recovered.

Embodiment 3

[0026] The regrinding process in Example 2 is based on the change of the raw ore: when the mud content in the scavenging 1 foam product is high, the regrinding is an open-circuit process; otherwise, the regrinding is a closed-circuit process. In this way, problems such as falling out of the beneficiation tank when there is a lot of mud content and low grade of concentrate products can be solved.

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Abstract

The invention provides a lead-zinc ore flotation procedure and a chemical system. The lead-zinc ore flotation procedure and the chemical system aim at solving the problem that the recycling rate of lead-zinc ore is low. The lead-zinc ore with the recycling rate needing to be increased refers to the lead-zinc ore with the complex raw ore structure, uneven granularity and the high oxidation rate. Minerals are recycled through staged ore grinding, stepped quick flotation, oxygen-sulfur mixed flotation, combined chemical feeding and the like. Staged ore grinding and stepped quick flotation are conducted in the lead floatation process, fine-grain lead is recycled, and the circulation amount of coarse-grain lead is reduced; a product is directly output through a first zinc rough flotation groove, and remaining foam enters a second fine flotation machine; an original first fine flotation machine provides fine flotation and scavenging, so that the grade of concentrate is guaranteed, and the recycling rate is increased; and oxidized ore is recycled by adding an oxidation chemical in the scavenging process. By means of the whole set of lead-zinc ore flotation procedure and the chemical system, the metal recycling rate of the lead-zinc ore which is high in mud content and oxidation rate, uneven in granularity and fineness and the like can be effectively increased.

Description

technical field [0001] The invention relates to a flotation method, in particular to a method for improving the recovery rate of complex lead-zinc ores. Background technique [0002] According to statistics, the total recovery rate of mineral resources in my country is only about 50%, and the comprehensive utilization rate of co-generated mineral resources is less than 40%. The total recovery rate of mineral resources is 20 to 30 percentage points lower than that of foreign countries. my country is a developing country with a large population. The per capita possession of many important mineral resources and water resources is far below the world's average level. The contradiction between supply and demand is prominent. The severe situation does not allow my country's mining industry to continue to follow the old path of wasting resources and deteriorating the environment. We must take the road of sustainable development. The key to this is to increase the comprehensive utili...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03D103/02
Inventor 姚青峰周长银
Owner 内蒙古森泰企业咨询有限公司
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