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A kind of flotation method of zinc oxide in sulfide ore tailings

A technology of sulfide ore and zinc oxide, which is applied in flotation, solid separation, etc., can solve the problems of expensive integration agent, large consumption of chemicals, and less industrial application, so as to optimize the agent addition system, reduce the cost of agents, and improve the separation rate. selective effect

Active Publication Date: 2021-10-26
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From these two vulcanization processes, it can be seen that the vulcanization-xanthate flotation method has the following disadvantages: the process is more complicated, heating and activation are required, the consumption of reagents is large, and the cost of reagents is high
However, due to the high price, most of the integrants are still only in the laboratory stage, and there are few industrial applications.

Method used

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  • A kind of flotation method of zinc oxide in sulfide ore tailings
  • A kind of flotation method of zinc oxide in sulfide ore tailings
  • A kind of flotation method of zinc oxide in sulfide ore tailings

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Embodiment 1

[0029] The present embodiment provides a kind of flotation method of zinc oxide in sulfide ore tailings, comprising the following steps:

[0030] S1. Take the sulfide ore tailings for crushing and then enter the ball mill for grinding. The ground material enters the spiral classification and screens out the pulp fineness less than 0.074mm, accounting for 80%. The unqualified ones are returned to the ball mill to continue grinding;

[0031] S2. Prepare a mixed solution, mix the inhibitor, regulator 1 and collector together in a certain proportion, add water and stir until completely dissolved;

[0032] The inhibitor is that sodium silicate and sodium hexametaphosphate are mixed according to the dosage ratio of 1:4, and the consumption of the sodium hexametaphosphate is 500g / t;

[0033] Described adjusting agent one is that sodium sulfide and sodium carbonate are mixed according to 1:0.4; The consumption of described sodium sulfide is 2500g / t;

[0034] Described collector is th...

Embodiment 2-5

[0039] Embodiment 2-5 provides a kind of flotation method of zinc oxide in sulfide ore tailings, compared with embodiment 1, the difference is that in step S1, the ratio of qualified pulp fineness after screening is less than 0.074mm is changed , except for the above differences, other operations are the same and will not be repeated here; the specific condition parameters and the grade and recovery rate of the zinc oxide concentrate separated by flotation are shown in the table below.

[0040] Example Proportion of pulp fineness less than 0.074mm (%) grade% Recovery rate% 1 80 46.1 92.1 2 70 44.8 88.5 3 85 46.7 92.4 4 65 40.3 85.6 5 90 47.2 92.7

[0041] It can be seen from the results in the above table that when the pulp fineness is less than 0.074mm, it accounts for 70-85%, and the recovery rate of zinc oxide in pyrite tailings basically reaches a balance. High, the recovery rate of pyrite increases with the increase o...

Embodiment 6-9

[0043] Embodiment 6-9 provides a kind of flotation method of zinc oxide in sulfide ore tailings, compared with embodiment 1, the difference is that in step S2, sodium silicate and sodium hexametaphosphate in the inhibitor are changed In addition to the above differences, other operations are the same, and will not be repeated here; the specific condition parameters and the grade and recovery of the zinc oxide concentrate separated by flotation are shown in the table below.

[0044] Example Dosage ratio grade% Recovery rate% 6 1:0 41.5 85.3 7 1:2.5 43.6 90.9 8 1:5 46.1 92.1 9 0:1 40.3 86.2

[0045] It can be seen from the results in the above table that with the increase of the dosage ratio of sodium silicate and sodium hexametaphosphate in the inhibitor, the recovery of zinc in zinc oxide concentrate first increases and then decreases. When the dosage of sodium silicate is 125g When the consumption of / t, sodium hexametaphosphate...

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Abstract

The invention discloses a method for flotation of zinc oxide in sulfide ore tailings. By using a six-component zinc oxide with remarkable inhibitory effect on gangue minerals and slimes such as quartz, calcium magnesium carbonate and magnesium silicate in sulfide ore tailings, Sodium metaphosphate and sodium silicate are combined inhibitors, and a combination of CA-1, N-nitroso-phenylnuclear ammonium salt, and E-5 is used in the ratio of 1:0.5~0.8:0.2~0.5 Collector; by adopting the above-mentioned combined collector, and through a closed-circuit non-desliming direct flotation process of one coarse, two fine and one sweep, and rationally optimizing the dosage ratio of inhibitor and regulator in the flotation process, it can effectively Reduce the dosage of flotation agents, improve the separation index, and significantly increase the recovery rate and grade of zinc oxide concentrate in sulfide ore tailings, thus obtaining a zinc oxide concentrate with a zinc grade of 46.7% and a zinc recovery rate of 92.4%. It has realized the efficient utilization of low-grade refractory zinc oxide ore resources in sulfide ore tailings.

Description

technical field [0001] The invention relates to the technical field of beneficiation methods for zinc oxide ore, in particular to a flotation method for zinc oxide in sulfide ore tailings. Background technique [0002] my country's zinc oxide ore resources are relatively rich, and there have been reports on the beneficiation of zinc oxide ore for a long time. Due to the high content of soluble salts and clay minerals, the current mineral processing and recovery of zinc oxide ore cannot reach a good index. The low mineral processing index has restricted the utilization of zinc oxide ore and caused a waste of zinc oxide resources. With the depletion of zinc sulfide ore resources, the processing and utilization of low-grade refractory zinc oxide ore has become extremely important. [0003] At present, the beneficiation methods of zinc oxide ore mainly include: sulfide-xanthate flotation method, sulfide-amine flotation method, anion collector direct flotation method, integration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03B1/00B03D1/018B03D103/02B03D101/06B03D101/02
CPCB03B1/00B03D1/00B03D1/018B03D2201/02B03D2201/06B03D2203/02
Inventor 戴兵刘永李向阳陈英
Owner NANHUA UNIV
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