Method for recovering indium-enriched marmatite from copper, zinc and indium coexisting polymetallic ore under low-alkaline condition

A polymetallic ore-rich indium-iron technology, applied in the field of mineral processing, can solve the problems of fine particle size, difficulty in dissociation, poor recovery of indium and fine-grained minerals, etc., so as to reduce grinding costs and increase the recovery rate of indium and zinc , The effect of simplifying the flotation process

Active Publication Date: 2017-05-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, indium in cassiterite polymetallic sulfide ore in Dachang, Guangxi is widely distributed in sphalerite, and sphalerite contains an average of 421g / t of indium. The process of "gravity separation-flotation-gravity separation" is mainly used on site to recover lead and zinc Tin and antimony and other metals, but due to the fine particle size of sphalerite, cassiterite and other minerals, it is difficult to dissociate. , the recovery rates of zinc and indium are only 84.13% and 61.35% respectively

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The ore is taken from the Dulong mining area in Wenshan, Yunnan. The ore contains an average of 0.22% copper, 3.42% zinc, 12.4% sulfur, 0.32% tin, 15.4% iron, 86.5g / t indium, and 23.8% silicon dioxide. The main metal minerals in the ore are yellow Copper, sphalerite, pyrrhotite, pyrite, arsenopyrite and cassiterite, etc., non-metallic minerals are mainly quartz, chlorite, talc, sericite and feldspar. Among them, more than 90% of indium occurs in sphalerite, forming indium-rich sphalerite. Grind the raw ore to -0.074mm, accounting for 63% (weight percentage), add water to adjust the concentration of the pulp to 32%, and add zinc sulfate 400g / t, Z-200 collector 120g / t, ethyl sulfur Nitrogen collector 60g / t, BK-206 foaming agent 40g / t after pulping, pumped into the inflatable stirring flotation machine for copper, zinc, sulfur, etc. can be floated for a rougher selection, and copper, zinc, sulfur, etc. can be floated for a rougher selection The concentrate and primary rou...

Embodiment 2

[0029] The ore is taken from Gejiu, Yunnan. The ore contains 0.55% copper, 2.86% zinc, 15.4% sulfur, 0.26% tin, 0.18% arsenic, 9.56% iron, 34.7g / t indium and 36.46% silicon dioxide on average. Grind the ore to -0.074mm, accounting for 65% (weight percentage), add water to adjust the concentration of the slurry to 31%, and then add 500g / t of zinc sulfate, 100g / t of Z-200 collector, After mixing 80g / t of collecting agent and 50g / t of BK-206 foaming agent, it is pumped into the inflatable agitating flotation machine for roughing of copper, zinc, sulfur, etc. ore and primary roughing tailings, the primary roughing tailings are mixed with Z-200 collector 50g / t and ethylsulfide nitrogen collector 50g / t, and then pumped into the inflatable stirring flotation machine for copper, zinc, sulfur, etc. Float one scavenging to obtain copper, zinc, sulfur, etc., one flotation concentrate and one scavenging tailings, one scavenging concentrate returns to copper, zinc, sulfur, etc., one roughi...

Embodiment 3

[0034] The ore is taken from a copper-zinc mine in the Mengzi area of ​​Yunnan. The ore contains an average of 0.76% copper, 2.18% zinc, 0.09% lead, 9.68% sulfur, 19.14% iron, 31.8g / t indium, 15.6g / t silver, silicon dioxide The metal minerals in the ore are mainly chalcopyrite, sphalerite, pyrite, galena, white lead ore, etc., and the non-metallic minerals are mainly quartz, mica and feldspar. Grind the raw ore to -0.074mm, accounting for 64% (weight percentage), add water to adjust the concentration of the pulp to 29%, and add zinc sulfate 300g / t, Z-200 collector 140g / t, ethyl sulfur Nitrogen collector 100g / t and BK-206 foaming agent 30g / t are stirred and mixed, then pumped into the inflatable agitated flotation machine for rough separation of copper, zinc, sulfur, etc., to obtain copper, zinc, sulfur, etc. Concentrate ore and primary roughing tailings, primary roughing tailings are added Z-200 collector 70g / t, ethyl disulfide nitrogen collector 30g / t, stirred and slurried, t...

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PUM

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Abstract

The invention discloses a method for recovering indium-enriched marmatite from copper, zinc and indium coexisting polymetallic ore under a low-alkaline condition. By adoption of the method, the technical problems that under the high-alkaline condition, indium-enriched marmatite is poor in floatability, difficult in excitation and low in indium recovery rate, and concentrate metals are high in content are solved. The method comprises the steps that a chemical agent is added into crushed and ground raw ore, slurry is formed through blending, and then copper, zinc and sulfur iso-flotation is conducted; and coarse grains are reground after iso-flotation rough concentrate is graded, an inhibitor is added for adjusting the mineral slurry and the pH value of the slurry, then copper selection is conducted, and copper concentrate and copper cleaner tailings are obtained; the copper cleaner tailings and copper, zinc and sulfur iso-flotation tailings are blended, then an activator is added and blended with the slurry, zinc and sulfur bulk flotation is conducted, and coarse grains are reground after zinc and sulfur bulk flotation rough concentrate is graded; and lime is added for adjusting the pH value of the mineral slurry, then zinc selection is conducted, and zinc concentrate and zinc cleaner tailings are obtained. By adoption of the method, the use amount of the inhibitor in the copper and zinc grading operation, the flotation mineral flurry pH value and the concentrate metal contents are lowered, and the indium and zinc recovery rates are increased; and meanwhile, the flotation process is simplified, and the flotation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of mineral processing, and relates to a method for recovering indium-rich sphalerite from copper-zinc-indium co-associated polymetallic ore under low alkali conditions. Background technique [0002] As a strategic rare and precious metal resource, indium has been widely used in the fields of computer, energy, electronics, communication, optoelectronics, medicine, health, national defense, aerospace, nuclear industry and modern information industry. my country's indium resource reserves rank first in the world, but there are few independent indium deposits. Indium is mainly associated in non-ferrous metal deposits such as copper, lead, zinc, and tin, such as copper, zinc, and tin associated polymetallic deposits in the Dulong mining area of ​​Wenshan, Yunnan, Dachang, Guangxi Cassiterite polymetallic sulfide deposits and Yunnan Mengzi Bainiuchang lead-zinc-silver polymetallic sulfide deposits are rich in indium resource...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/06B03D1/00B03D103/02
CPCB03B9/06B03D1/00B03D2203/02Y02W30/52
Inventor 童雄杨波谢贤蓝卓越
Owner KUNMING UNIV OF SCI & TECH
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