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Lead-zinc separating method for resource utilization of porphyry type lead-zinc ore beneficiation wastewater

A technology of mineral processing wastewater and separation methods, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve problems such as ignoring the recycling of wastewater, and achieve the effect of reducing consumption

Active Publication Date: 2019-11-08
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Domestic recycling of lead-zinc beneficiation wastewater focuses on disposal from the perspective of wastewater treatment, ignoring the recycling of wastewater from the perspective of integration of mineral processing processes and utilization of wastewater resources

Method used

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  • Lead-zinc separating method for resource utilization of porphyry type lead-zinc ore beneficiation wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] use figure 1 The lead-zinc separation method shown in the porphyry-type lead-zinc mine beneficiation wastewater can be used as a resource, and lead-zinc separation and recovery were carried out on a porphyry-type lead-zinc mine in Inner Mongolia.

[0025] The mass percentages of Pb and Zn in a porphyry-type lead-zinc deposit in Inner Mongolia are 2.03% and 2.12% respectively, the main lead mineral is galena, the zinc mineral is sphalerite, and the gangue mineral is feldspar , quartz, the lead-zinc separation method of lead-zinc beneficiation wastewater can be used as a resource is carried out according to the following steps:

[0026] (1) Crushing the raw ore to -15mm, using the tailings pond wastewater to adjust the grinding concentration to 60%, and grinding the raw ore until the particle size is -0.075mm, accounting for 55%, to obtain the grinding slurry;

[0027] (2) Use the waste water from the tailings pond to adjust the mass percentage concentration of the grind...

Embodiment 2

[0033] use figure 1 The lead-zinc separation method shown in the porphyry-type lead-zinc mine beneficiation wastewater can be used as a resource, and the lead-zinc separation and recovery of a porphyry-type lead-zinc mine in Heilongjiang were carried out.

[0034] The mass percentages of Pb and Zn in a porphyry-type lead-zinc deposit in Heilongjiang are 1.89% and 2.05% respectively, the main lead mineral is galena, the zinc mineral is sphalerite, and the gangue mineral is feldspar , quartz, the lead-zinc separation method of lead-zinc beneficiation wastewater can be used as a resource is carried out according to the following steps:

[0035] (1) Crushing the raw ore to -15mm, using the tailings pond wastewater to adjust the grinding concentration to 62%, and grinding the raw ore until the particle size is -0.075mm, accounting for 58%, to obtain the grinding slurry;

[0036] (2) Use the waste water from the tailings pond to adjust the mass percentage concentration of the grind...

Embodiment 3

[0042] use figure 1 The lead-zinc separation method shown in the porphyry-type lead-zinc mine beneficiation wastewater can be used as a resource, and lead-zinc separation and recovery were carried out on a porphyry-type lead-zinc mine in Yunnan.

[0043] The mass percent contents of Pb and Zn in this porphyry-type lead-zinc deposit in Yunnan are 1.98% and 2.15% respectively, the main lead mineral is galena, the zinc mineral is sphalerite, and the gangue mineral is feldspar , quartz, the lead-zinc separation method of lead-zinc beneficiation wastewater can be used as a resource is carried out according to the following steps:

[0044] (1) Crushing the raw ore to -15mm, using the tailings pond wastewater to adjust the grinding concentration to 65%, grinding the raw ore until the particle size is -0.075mm, accounting for 60%, and obtaining the grinding slurry;

[0045] (2) Utilize the waste water of the tailings pond to adjust the mass percentage concentration of the grinding pu...

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Abstract

The invention relates to the technical field of mineral processing, and particularly discloses a lead-zinc separating method for resource utilization of porphyry type lead-zinc ore beneficiation wastewater. Aiming at the problem that residual Cu2+, Pb2+ and xanthate in the lead-zinc ore beneficiation wastewater mainly influence lead-zinc separation, and consequently zinc mineral is hard to restrain in the lead-zinc separation process, according to the characteristic that heavy metal ions and residual reagents in the wastewater can be used for flotation of lead mineral and part of the zinc mineral, a lead-zinc floating process is adopted, lead rough concentrate is obtained, then the lead rough concentrate is subjected to stirring reagent removal, thickening and dehydration and regrinding, and the negative influence of Cu2+, Pb2+ ions and xanthate in the wastewater in the lead-zinc separation process is eliminated. According to the characteristic that the influence of the heavy metal ions and residual xanthate and black powder in the wastewater on flotation roughing, scavenging and zinc flotation of lead, zinc and the like is small, lead concentrate and zinc concentrate are obtainedthrough lead mineral and zinc mineral flotation.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a lead-zinc separation method for resource utilization of porphyry-type lead-zinc mine beneficiation wastewater. Background technique [0002] The discharge of mineral processing wastewater in my country is huge, accounting for about 10% of the total industrial wastewater. Heavy metal ions, residual mineral processing agents and suspended solids in mineral processing wastewater are the main pollutants. If they are discharged randomly, they will not only cause environmental pollution. It will also cause a serious waste of water resources. With the country's increasing requirements for mine environmental protection, the recycling of mine wastewater has become inevitable. However, at present, due to the heavy metal ions, residual chemicals and suspended solids in mine wastewater have a great influence on the flotation index of multi-minerals, it is difficult to directly r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B1/00B03B7/00B03B9/00C22B3/20C22B1/00C22B13/00C22B19/20
CPCB03B1/00B03B7/00B03B9/00C22B1/00C22B3/20C22B13/04C22B19/20Y02P10/20
Inventor 刘超陈志强饶金山胡红喜吕昊子刘勇
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI