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Mixed concentration method giving consideration to large fluctuation of raw material grade

A technology of mixing, beneficiation and grade, which is applied in flotation, solid separation, etc., can solve the problems of large changes in the selected grade of compatible raw materials, large fluctuations in the beneficiation process, and poor beneficiation technical indicators, so as to improve the concentrate grade and Recovery rate, improvement of recovery rate, and the effect of reducing investment

Inactive Publication Date: 2021-09-03
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a mixing and beneficiation method that takes into account large fluctuations in raw material grades. This method solves the problem of the compatibility of the flotation system for different mineral types and the fluctuation of the beneficiation process caused by large changes in the grade of raw materials. Large and poor beneficiation technical indicators

Method used

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  • Mixed concentration method giving consideration to large fluctuation of raw material grade
  • Mixed concentration method giving consideration to large fluctuation of raw material grade

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Embodiment 1

[0024] refer to figure 1 , a mixing and concentrating method taking into account large fluctuations in raw material grades, comprising flotation machines 1-11, pneumatic valves A, B, C, D, E, comprising the following steps:

[0025] S1: The raw ore processing capacity is 450t / h, the grade of copper and iron ore is 0.2%, the grade of iron is 25%, the grade of copper and zinc ore is 0.2%, and the grade of zinc is 1%. Investment in assets avoids idleness and waste of equipment;

[0026] S2: When processing copper and iron ore: Copper coarse concentrate and coarse concentrate enter the flotation machine 1-5 for the first selection, and the selected froth enters the flotation machine 6-7 for the second selection, and the selected froth Enter the flotation machine 8 for the third beneficiation, and finally the copper concentrate flows out from D, and the magnetically separated iron coarse concentrate enters the flotation machine 9-11 for flotation desulfurization to obtain the iron...

Embodiment 2

[0030] refer to figure 1 , a mixing and concentrating method taking into account large fluctuations in raw material grades, comprising flotation machines 1-11, pneumatic valves A, B, C, D, E, comprising the following steps:

[0031] S1: The raw ore processing capacity is 500t / h, the grade of copper and iron ore is 0.3%, the grade of iron is 35%, the grade of copper and zinc is 0.3%, and the grade of zinc is 3%. Investment in assets avoids idleness and waste of equipment;

[0032] S2: When processing copper and iron ore: Copper coarse concentrate and coarse concentrate enter the flotation machine 1-5 for the first selection, and the selected froth enters the flotation machine 6-7 for the second selection, and the selected froth Enter the flotation machine 8 for the third beneficiation, and finally the copper concentrate flows out from D, and the magnetically separated iron coarse concentrate enters the flotation machine 9-11 for flotation desulfurization to obtain the iron con...

Embodiment 3

[0036] refer to figure 1 , a mixing and concentrating method taking into account large fluctuations in raw material grades, comprising flotation machines 1-11, pneumatic valves A, B, C, D, E, comprising the following steps:

[0037] S1: The raw ore processing capacity is 550t / h, the grade of copper and iron ore is 0.4%, the grade of iron is 40%, the grade of copper and zinc ore is 0.4%, and the grade of zinc is 5%. Investment in assets avoids idleness and waste of equipment;

[0038] S2: When processing copper and iron ore: Copper coarse concentrate and coarse concentrate enter the flotation machine 1-5 for the first selection, and the selected froth enters the flotation machine 6-7 for the second selection, and the selected froth Enter the flotation machine 8 for the third beneficiation, and finally the copper concentrate flows out from D, and the magnetically separated iron coarse concentrate enters the flotation machine 9-11 for flotation desulfurization to obtain the iron...

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Abstract

The invention relates to the technical field of mineral processing engineering, and discloses a mixed concentration method giving consideration to large fluctuation of raw material grade. The method includes flotation machines 1-11 and pneumatic valves A, B, C, D and E, and comprises the steps that S1, the treatment capacity of raw ores is 450t / h-550t / h, the raw ores mainly comprise two types, namely, copper-iron ore and copper-zinc ore, the copper grade of the copper-iron ore is 0.2%-0.4%, the iron grade of the copper-iron ore is 25%-40%, the copper grade of the copper-zinc ore is 0.2%-0.4%, and the zinc grade is 0.8%-5%; and S2, when the copper-iron ore is treated, rough concentrate enters the flotation machines 1-5 to be subjected to first-time concentration, and concentration foam enters the flotation machines 6-7 to be subjected to second-time concentration. According to different raw materials, the existing equipment is fully utilized, the investment of fixed assets is reduced, the idle and waste of the equipment are avoided, the flow is flexibly switched by utilizing the valve according to different raw material grade change conditions, and the concentrate grade and the recovery rate are improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing engineering, in particular to a mixing and concentrating method that takes into account large fluctuations in raw material grades. Background technique [0002] For the problems that there are many ore bodies in mines and the ore metal types vary greatly between different ore bodies, the traditional solution is to carry out ore blending treatment according to a certain proportion between different ore bodies, but some mines have copper-iron ore, copper-zinc ore, etc. For different ore bodies, the recovery rate of copper in the copper-iron ore is higher, and the recovery rate of copper in the copper-zinc ore is slightly lower due to the copper-zinc separation process. After adopting ore blending treatment, the grade of zinc in the mixed ore will be reduced. At the same time, due to the need to uniformly adopt the separation process of copper and zinc, the recovery rate of copper will als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02
CPCB03D1/02
Inventor 杨林杨俊龙袁积余王丽萍张天永皇甫长青胡军元徐英宋东生王永智
Owner NORTHWEST RES INST OF MINING & METALLURGY INST