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Method for recovering barite from lead and zinc tailings

A barite and tailings technology, applied in solid separation, flotation, etc., to achieve the effects of low environmental pollution, low cost of chemicals and processing costs

Active Publication Date: 2015-12-16
广东省资源综合利用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] It can be seen from the above literature that for the comprehensive recovery of barite in tailings, there is no such thing as dolomite containing more than 50%, and at the same time BaSO 4 Report on comprehensive recovery of low-grade refractory barite ore with content less than 15%

Method used

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  • Method for recovering barite from lead and zinc tailings
  • Method for recovering barite from lead and zinc tailings

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Experimental program
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Effect test

Embodiment 1

[0021] The content of lead-zinc tailings fineness -0.074mm is 72.58%, the content of dolomite is 60.13%, and the content of barite is 10.25%. Pyrite roughing concentration is 37%, barite roughing concentration is 33%, barite primary concentration is 27%, barite secondary concentration is 26%. According to the doses listed in Table 1 and figure 1 The process operation listed, the final obtained barite concentrate contains BaSO 4 90.85%, BaSO 4 The recovery rate is 70.63%.

Embodiment 2

[0023] The content of lead-zinc tailings fineness -0.074mm is 74.66%, the content of dolomite is 55.25%, and the content of barite is 14.25%. Pyrite roughing concentration is 39%, barite roughing concentration is 35%, barite primary concentration concentration is 29%, barite secondary concentration concentration is 28%, barite secondary concentration concentration is 27%, barite concentration concentration is 27%. The concentration of spar is 26% for four times, and the concentration of barite for five times is 25%. According to the doses listed in Table 1 and figure 1 Listed process operation, the final barite concentrate containing BaSO 4 95.47%, BaSO 4 The recovery rate is 60.84%.

Embodiment 3

[0025] The content of lead-zinc tailings fineness -0.074mm is 73.39%, the content of dolomite is 64.28%, and the content of barite is 13.65%. Pyrite roughing concentration is 36%, barite roughing concentration is 31%, barite primary concentration concentration is 29%, barite secondary concentration concentration is 27%, barite secondary concentration concentration is 26%, barite concentration concentration is 26%. The concentration of crystal stone is 25% for four times. According to the doses listed in Table 1 and figure 1 Listed process operation, the final barite concentrate containing BaSO 4 93.68%, BaSO 4 The recovery rate is 63.57%.

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Abstract

The invention relates to a method for recovering barite from lead and zinc tailings. The method includes the following steps: pyrite flotation is carried out to obtain pyrite flotation tailings; barite rougher flotation is carried out to obtain barite rough concentrates and barite rougher flotation tailings; scavenging is carried out on the barite rougher flotation tailings to obtain flotation tailings; and barite rough concentrate selection is carried out to obtain barite concentrates. The method is a beneficiation method which is relatively lower in medicament cost and processing cost and small in environmental pollution, and can use tailing water repeatedly; and the method is suitable for low-grade barite ore with the dolomite content ranging from 55% to 65% and the barite grade ranging from 10% to 15%.0

Description

technical field [0001] The invention relates to a method for recovering barite from lead-zinc tailings, in particular to a method for comprehensive recovery of low-grade barite with high dolomite content in lead-zinc tailings. technical background [0002] The utilization of pure barite ore in our country is relatively good, but there are still a large number of associated barite ore, whose quality is generally low, and barite is not well recovered comprehensively. The industrial grade of barite mining is 50%, the cut-off grade is 30%, BaSO 4 Those with a content of less than 30% are low-grade barite ores. A lead-zinc mine in Guangxi is associated with low-grade barite, and the tailings contain BaSO after flotation of lead-zinc 4 It is only about 13%, which belongs to low-grade barite ore. At the same time, the dolomite content in lead-zinc tailings reaches 55-65%, and those with dolomite content higher than 20% belong to high dolomite content. At the same time, the tai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 张红英何晓娟罗传胜刘进陈志强
Owner 广东省资源综合利用研究所
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