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Composite collecting agent and application thereof in chalcopyrite flotation

A technology of composite collectors and agents, applied in flotation, solid separation, etc., can solve problems such as poor merger effect, sticky flotation foam, serious entrainment of flotation foam, etc., to reduce foam entrainment and improve foam stickiness , low cost effect

Active Publication Date: 2021-04-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in sulfide ore flotation, due to the characteristics of the reagents, the flotation foam is generally sticky, and the merger effect is poor, which makes the flotation foam entrainment serious.

Method used

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  • Composite collecting agent and application thereof in chalcopyrite flotation

Examples

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Effect test

Embodiment 1

[0032] A composite collector of the present invention is 2-phosphonic acid butane-1,2,4-tricarboxylic acid and butyl xanthate with a mass ratio of 8:2.

[0033] The composite inhibitor of this embodiment is applied in the flotation process of a chalcopyrite in Gansu (Cu grade is 0.45%, gangue is mainly quartz, calcite, pyrite and magnetite), and its process flow chart is as follows figure 1 As shown, the specific process is as follows: First, grind the chalcopyrite to below -0.074mm, the mass ratio of -0.074mm ore accounts for 70%, and the pulp concentration is 45%, then adjust the pH of the pulp to 8 with sodium carbonate, and add compound inhibitors (a mixture of water glass, glyceric acid and sodium carboxymethyl cellulose with a mass ratio of 4:3:3) and composite collector (add 2-phosphonic acid butane-1,2,4-tricarboxylic acid first , and then add butyl xanthate, the mass ratio of 2-phosphonic acid butane-1,2,4-tricarboxylic acid to butyl xanthate is 8:2, and the medicamen...

Embodiment 2

[0056] A composite collector of the present invention, comprising trimethylphosphonoacetate and ethylthiazide in a mass ratio of 6:4.

[0057] The composite inhibitor of this embodiment is applied to the flotation process of a certain high-grade chalcopyrite in Tibet (Cu grade is 0.65%, the gangue minerals are mainly quartz, feldspar and pyroxene, and the pyrite content is less). The process is as follows: the chalcopyrite is ground to -0.074mm, the mass ratio of -0.074mm ore accounts for 65%, the pulp concentration is 40%, then the pH of the pulp is adjusted to 9 with sodium carbonate, and a compound inhibitor (mass ratio of 6 : 3:1 water glass, oxalic acid and sodium carboxymethyl cellulose) and composite collector (first add trimethylphosphonoacetate, then add ethiazide, trimethylphosphonoacetate and ethyl The mass ratio of sulfur to nitrogen is 6:4, and the medicament of the composite collector needs to be added separately in the follow-up process), and at room temperature...

Embodiment 3

[0059] A composite collector of the present invention comprises 2-hydroxyphosphonoacetic acid and butylammonium black medicine with a mass ratio of 7:3.

[0060] The composite inhibitor of this embodiment is applied in the flotation process of a certain high-sulfur low-copper chalcopyrite in Jiangxi (Cu grade is 0.34%, gangue minerals are mainly pyrite, feldspar and dolomite, and a small amount of quartz), The specific process is as follows: the chalcopyrite is ground to -0.074mm, the ore mass ratio accounts for 60%, and the pulp concentration is 35%, then sodium carbonate is used to adjust the pH of the pulp to 10, and a compound inhibitor is added (the mass ratio is 6:1 :3 mixture of water glass, malonic acid and sodium carboxymethyl cellulose) and composite collector (add 2-hydroxyphosphonoacetic acid earlier, then add butyl ammonium black medicine, and 2-hydroxyphosphonoacetic acid and The mass ratio of ammonium butyl ammonium black medicine is 7:3, and the medicament of c...

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Abstract

The invention discloses a composite collecting agent which comprises an organic carboxylic acid organic matter and a xanthate medicament in a mass ratio of (6-8): (2-4). The invention also discloses application of the composite collecting agent in chalcopyrite flotation, which comprises the following steps: crushing and grinding chalcopyrite, adding the composite collecting agent and an inhibitorinto ore pulp under the conditions of proper ore pulp concentration, fineness and pH, stirring, adding a foaming agent, and carrying out flotation. When the composite collecting agent is applied to mineral separation of chalcopyrite and gangue, oxygen in phosphonic acid (phosphonyl) and carboxylic acid (carboxylate) functional groups in organic carboxylic acid organic matters of a main agent can be selectively combined with copper and iron sites on the surface of the chalcopyrite, so that selective separation of the chalcopyrite and the gangue is realized; and the strong collecting property ofthe auxiliary agent xanthate can strengthen recovery of the chalcopyrite and improve foam merging, the synergistic effect of the two agents greatly improves the grade and the recovery rate of copperconcentrate, and the effect is superior to that of a traditional xanthate collecting agent.

Description

technical field [0001] The invention belongs to the technical field of chalcopyrite flotation separation and impurity removal, and in particular relates to a composite collector and its application in chalcopyrite flotation. Background technique [0002] Copper is an important non-ferrous metal, which is widely used in construction industry and defense industry. Chalcopyrite is the main occurrence mineral of copper, but it often coexists with sulfide minerals such as pyrite. Flotation is the most common separation method for sulfide minerals such as chalcopyrite and pyrite, but due to the similar buoyancy of the two minerals, it is difficult to separate the two minerals. At the same time, due to the activation of metal ions such as copper and the entrainment of foam during the flotation process, aluminosilicate gangues such as quartz, feldspar and dolomite float up, reducing the grade of chalcopyrite. [0003] In order to realize the separation of sulfide minerals such as ...

Claims

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Application Information

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IPC IPC(8): B03D1/014B03D1/02B03D101/02B03D103/02
CPCB03D1/014B03D1/02B03D2201/02B03D2203/02
Inventor 孙伟王建军高志勇胡岳华江哲伊景高贵陶黎明汪聪伍思回苗泽坤范瑞华
Owner CENT SOUTH UNIV
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