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
8 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] In addition, in sulfide ore flotation, due to the characteristics of the reagents, the flotation fo...
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Method used

Find by comparative test result, the Cu grade in comparative example 4 is slightly higher than embodiment 1 result, simultaneously in copper concentrate SiO content is lower than embodiment 1, this shows that 2-phosphonic acid butane-1,2, 4-tricarboxylic acid has better selectivity to chalcopyrite than the traditional collector butyl xanthate, and at the same time, the foam entrainment is less, but the Cu recovery rate ...
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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.

Application Domain

Flotation

Technology Topic

XanthateChalcopyrite +3

Image

  • Composite collecting agent and application thereof in chalcopyrite flotation

Examples

  • Experimental program(3)
  • Comparison scheme(7)

Example Embodiment

[0031]Example 1:
[0032]A composite collector of the present invention, 2-phosphonate-1,2,4-triecarboxylic acid and dibly hydrazine of mass ratio of 8: 2.
[0033]The composite inhibitor of the present embodiment is applied to a brass mine in Gansu (Cu product is 0.45%, and the pulse stone is mainly quartz, square solution, Huangli and magnetite).figure 1As shown, the specific process is as follows: First, the brass mine is mainly grounded to 70.074 mm, and the mass ratio of -0.074 mm ore is 70%, the slurry concentration is 45%, and then the sodium carbonate is adjusted to 8, and the composite inhibitor is added. (Mixture of water glass, propanoic acid and sodium carboxymethylcellulose sodium mass) and a composite collector (1-phosphonate-1,2,4-tricarboxylic acid) , Then add but yellow medicine, 2-phosphonate-1,2,4-tricarboxylic acid and butterpartum mass ratio of 8: 2, and the agent of the composite capture agent needs to be separated separately. After room temperature, a crude four-free sweep was 300g / t of 300 g / t, and the amount of composite receptant was 80g / t, and the amount of foam 2 # oil was 30 g / t; the fine composite inhibitor The amount of 100 g / t, fine two is 50 g / t, fine three and fine four are blank selection; the amount of the composite collector is 30g / t, the foam 2 # oil 15g / t), the order of China is returned After the closed-circuit flotation process, the Cu product obtained in copper concentration was 26.36%, the recovery rate was 91.31%, SIO2The content is 4.85%, and the recovery is 0.28%.

Example Embodiment

[0055]Example 2:
[0056]A composite trapping of the present invention comprises a mass ratio of 6: 4 having a trimethylphosphonoate and acetine nitrogen.
[0057]The composite inhibitor of the present embodiment is applied to a high-grade brass mine in Tibet (Cu product is 0.65%, and the pulse mineral is mainly the flotation process of quartz, Changshi and Hui Stone, and the yellow iron ore content. The process is as follows: Under -0.074 mm, the mass ratio of -0.074 mm ore is 65%, the slurry concentration is 40%, then the sodium carbonate is adjusted to 9, and the composite inhibitor (mass of 6) is added. : 3: 1 water glass, oxalic acid and carboxymethylcellulose sodium) and composite collectors (first addition of trimethylphosphonomethyl acetate, then ethyl nitrogen, trimethylphosphonoate and B The mass ratio of the sulfur nitrogen is 6: 4, and the agent of the composite capture agent needs to be added separately during the subsequent process), and a crude three-precision is 350 g / t for 350 g / t at room temperature. Composite recapture The amount of dosage is 100g / t, the amount of the foam 2 # oil is 40g / t; the amount of the fine compound inhibitor is 150 g / t, the fine two is 50 g / t, the fine three is a blank selection; sweep a composite capture agent The amount of 50g / t, the foam 2 # oil 20g / t; the amount of the composite capture agent is 25 g / t, the foam 2 # oil 10g / t), the closed flotation flow returned by the middle mineral sequence, The copper concentration of Cu is 30.25%, the recovery rate of 94.09%, the copper coarse concentrate, SIO2The content was 9.75%, and the recovery rate was 0.35%.

Example Embodiment

[0058]Example 3:
[0059]A composite trapping of the present invention comprising 2-hydroxyphosphononic acid and butlammonium butmony ammonium drugs having a mass ratio of 7: 3.
[0060]The composite inhibitor of the present embodiment is applied to a high-sulfur low-copper-copper-copper mine (Cu product is 0.34%, and the pulse mineral is mainly the flotation process of Huangding, Changshi and Dolomite, and a small quantity of quartz). The specific process is as follows: Under -0.074 mm, the mass ratio of ore is 60%, and the slurry concentration is 35%, then the sodium carbonate is adjusted to 10, and the composite inhibitor (mass ratio is 6: 1). 3 of the mixture of water glass, malonic acid and carboxymethylcellulose sodium sodium) and composite trapping (2-hydroxyphosphonic acid first, additional butmite black drug, and 2-hydroxyphosphonic acid and The mass ratio of butmantantal black medicine is 7: 3, and the drugs of the composite capture agent are added separately from the subsequent process), and a crude four-free sweep is taken at room temperature (the coarse-selected composite inhibitor is 450g / t, composite The amount of ceiling agent is 60g / t, and the amount of foaming agent 2 # oil is 25g / t; the amount of complex inhibitor is 200g / t, the fine two is 100g / t, the fine three and fine four are blank selection; A composite receptant is 30g / t, a foam 2 # oil 15g / t), after the order of the medium ore is returned to the closed flotation process, the Cu product obtained in the copper concentrate is 24.72%, the recovery rate of 88.58% copper coarse Seiki, SIO2The content was 7.51%, and the recovery rate was 0.23%.

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