High-magnesium sulfide ore flotation inhibitor with slow-release conversion function and application thereof

A mineral flotation and inhibitor technology, applied in the field of high magnesium sulfide mineral flotation inhibitor and magnesium-containing mineral inhibitor, can solve the problems of entrainment, wrapping, agglomeration, agglomeration, difficulty in flotation separation, fine particle size, etc. The effect of reducing the cost of chemicals, efficient flotation separation, and low cost

Active Publication Date: 2019-07-09
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the fine particle size of magnesia-containing gangue minerals such as magnesia in nickel-cobalt-copper and other sulfide ores in the prior art, and the surface electrical properties are different from those of nickel-cobalt-copper and other sulfide ores, it is very easy to generate electrostatic attraction, entrainment, wrapping, Phenomena such as agglomeration and coagulation, thereby making flotation separation very difficult and other technical problems, the first purpose of the present invention is to provide a kind of fluorine that can be slowly released in the flotation system of high-magnesium sulfide ore, and has a good effect on magnesia gangue minerals. It is a solid mineral inhibitor with strong selectivity and slow-release conversion function, which can effectively inhibit the flotation of gangue minerals such as magnesium oxide

Method used

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  • High-magnesium sulfide ore flotation inhibitor with slow-release conversion function and application thereof
  • High-magnesium sulfide ore flotation inhibitor with slow-release conversion function and application thereof
  • High-magnesium sulfide ore flotation inhibitor with slow-release conversion function and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The fluorite natural pure mineral that is ground to amorphous (-2μm) is used for the flotation of a nickel-copper sulfide ore. The multi-element analysis results of a sulfide ore raw ore are shown in Table 1. It can be seen that the ore gangue minerals are mainly oxides, mainly including MgO, SiO 2 、Al 2 o 3 . Such as figure 1 As shown, in view of the characteristics of the ore, a beneficiation process of one-stage grinding + magnetic separation + one rough and one sweep is adopted. The collector is ethyl disulfide nitrogen, the inhibitor is natural fluorite particles with amorphous surface, and the foaming agent is BK205. The mixing time after adding the inhibitor is controlled at 10min, and the stirring intensity is 1500rpm. After flotation separation, the grade of nickel in the concentrate reached 4.24%, the recovery rate reached 73.21%, the grade and recovery rate of copper in the concentrate were 0.82% and 69.13%, and the grade of magnesium oxide in the conce...

Embodiment 2

[0039] Add 30g of calcium fluoride and 20g of sodium oleate to 100mL of water, and react in a high-pressure reactor at a temperature of 150°C and a pressure of 10MPa for 1 hour to make a nano-scale colloidal inhibitor, which is used for the flotation of raw ore in Jinchuan No. 1 mining area. Taking the raw ore in Jinchuan No. 1 mining area as the research object, the closed-circuit beneficiation process is returned to the closed-circuit beneficiation process in the order of one-stage grinding, coarse-sweeping, coarse concentrate re-grinding and re-election. The grades of nickel, copper and magnesium oxide before and after beneficiation are shown in Table 3. The flotation collector is used in combination with xanthate + black medicine, the inhibitor is nano-scale calcium fluoride colloid inhibitor, and the foaming agent is 2# oil. The mixing time after adding the nano-colloid inhibitor is 5 minutes, and the stirring intensity is 1600rmp. It can be seen that after figure 2 In ...

Embodiment 3

[0043] Take 20g of barium fluoride and 10g of sodium dodecylsulfonate, add 50mL of water, and react for 0.5 hours in a high-pressure reactor with a temperature of 200°C and a pressure of 10MPa to make a nano-scale colloidal inhibitor, which is used for the flotation of raw ore in Jinchuan No. 2 mining area. select.

[0044] The composition analysis and multi-element analysis of the raw ore in Jinchuan No. 2 mining area are shown in Table 4 and Table 5. Choose Z-200+ ethyl disulfide nitrogen, the inhibitor is nano-scale barium fluoride colloidal inhibitor, the foaming agent is 2# oil, and it is used together with acidified water glass. The mixing time after adding the nano-colloid inhibitor is 5 minutes, and the stirring intensity is 1500rmp. The beneficiation process is a closed-circuit process in the order of grinding + magnetic separation + rough, fine, and sweep, such as image 3 shown. Under this condition of collector and inhibitor, the grade and recovery rate of nicke...

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Abstract

The invention discloses a high-magnesium sulfide ore flotation inhibitor with slow-release conversion function and an application thereof. The inhibitor is CaF2, BaF2 and other nano alkaline earth metal fluoride colloidal particles or high-activity natural alkaline earth metal mineral powder, and is used for flotation separation of high-magnesium sulfide ore, which can slowly release F- ion in theore pulp and the MgF2 thin film is preferentially formed on the surface of the magnesium-containing mineral, so that the surface of oxide gangue minerals such as magnesium oxide has a structure similar to that of MgF2, the surface electrical properties of magnesium-containing minerals is changed, magnesium-containing mineral is prevented from heterogeneously coagulating with sulfide minerals dueto electrostatic attraction, and the entrainment, encapsulation and agglomeration of gangue minerals are reduced, the high-efficiency inhibition of the oxide gangue mineral such as magnesium oxide canbe realized, the flotation separation efficiency of such as copper-cobalt-nickel sulfide minerals and magnesium-containing gangue minerals can be greatly improved.

Description

technical field [0001] The invention relates to a magnesium-containing mineral inhibitor, in particular to a high-magnesium sulfide mineral flotation inhibitor with a slow-release conversion function and its use in flotation between metal sulfide ores such as nickel, cobalt, copper, and gangues such as magnesium oxide. Separation belongs to the field of mineral processing technology utilization. Background technique [0002] Nickel is an indispensable raw material for military industry and civilian industry, and plays an extremely important role in the national economy. There are mainly three types of nickel deposits that have been developed in the world: laterite nickel deposits, nickel sulfide deposits, and weathered crust nickel silicate deposits. The nickel deposits to be developed and utilized are seabed iron-manganese nodules. Among them, laterite nickel ore accounts for 55%, nickel sulfide ore accounts for 28%, and others account for about 17%. Nickel deposits in my...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/001B03D101/06B03D103/02
CPCB03D1/001B03D2201/06B03D2203/02B03D1/002B03D1/012B03D1/014B03D1/008B03D1/02B03D1/018C01F11/22
Inventor 韩海生孙伟胡岳华王若林卫召孙文娟王丽杨越唐鸿鹄张庆鹏孙磊
Owner CENT SOUTH UNIV
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