Method for improving recovery rates of gold and silver from chalcopyrite

A recovery rate, chalcopyrite technology, applied in solid separation, flotation and other directions, can solve the problem of low recovery rate of gold and silver in associated ores, and achieve the effect of improving recovery rate of gold and silver and improving hydrophobic performance

Inactive Publication Date: 2012-07-25
安徽金联地矿科技有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0003] In view of the fact that the recovery of existing associated gold and silver minerals is at a relatively low level, the purpose of the present invention is to provide a method for recovering gold and silver in chalcopyrite, which can effectively solve t...
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Method used

Said method is to be 65% by grinding to fineness-0.074mm according to the technical process shown in Fig. 1, adds lime 4000g/t to control pulp pH, adds respectively in roughing, sweeping and beneficiation each operation Butylamine black medicine and butyl xanthate mixed collector (butylamine black medicine: butyl xanthate=3:2), and foaming agent BK201 (commercially a...
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Abstract

The invention discloses a method for improving recovery rates of gold and silver from chalcopyrite. The method comprises the steps of: firstly crushing raw ore until the granularity is smaller than 12mm, adding quicklime, grinding, adding water to obtain ore pulp, then adding a collector and a foaming agent for chemical regulation, stirring, entering rough concentration for copper floatation, and carrying out scavenging, concentration and other steps on the ore pulp after rough concentration to obtain gold-silver-containing copper concentrate with high gold and silver grades. According to the invention, on the basis of ensuring traditional copper concentration economic and technical norms, the gold and silver recovery rates are improved by improving gold and silver grades in the copper concentrate, and the recovery rates of the accompany gold and silver in the chalcopyrite reach 85.11% and 89.97%, respectively; and the method is simple, the onsite production is easy to operate and the comprehensive utilization rate of ore resources is improved.

Application Domain

Technology Topic

Chemical regulationBrass +5

Image

  • Method for improving recovery rates of gold and silver from chalcopyrite
  • Method for improving recovery rates of gold and silver from chalcopyrite
  • Method for improving recovery rates of gold and silver from chalcopyrite

Examples

  • Experimental program(1)
  • Effect test(1)

Example Embodiment

[0017] Example 1:
[0018] Such as figure 1 As shown, the method for recovering gold and silver in chalcopyrite, the original ore is chalcopyrite containing associated gold and silver, including the following steps:
[0019] (1) The raw ore is crushed to make the ore size less than 12mm, and then enters the powder silo. Lime is added to the crushed ore. The amount of ore added per ton is 4000g, and the ore is ground to a fineness of -0.074mm to 60%~ 65%, its pulp is mixed with reagents, and the added reagent and dosage is per ton of raw ore plus butylamine black powder ((C4H 9 O) 2 PSSNH 4 ) And Butyl Xanthate (C 4 H 9 OCSSNa) 50g mixed collector, 20g foaming agent; control the pH of the slurry to 12, stirring time 2min, enter the roughing operation of flotation copper, roughing time 5min;
[0020] (2) After rough separation, the slurry is added again. The added reagent and dosage are 7g of butylamine black powder and butyl xanthate mixed collector and 10g foaming agent per ton of raw ore. The stirring time is 2min, and then enter the sweeping 1 , Scan for a time of 4min;
[0021] (3) After sweeping one, the slurry is added again, the added agent and dosage are 7g of butylamine black powder and butyl xanthate mixed collector, 5g foaming agent, stirring time 2min per ton of raw ore, and then enter the sweeping 2. The time of sweeping 2 is 3 minutes; after sweeping 2, the foam returns to sweeping 1, and the slurry is discarded as tailings;
[0022] (4) Adding agent and dosage of foam after roughing is 10g of butylamine black powder and butyl xanthate mixed collector per ton of raw ore, stirring time 2min, enter selection one, and selection one time 5min; selection one After the second foam selection, the second selection time is 4 minutes, and the second selection second foam is the copper concentrate (associated gold and silver);
[0023] (5) Among them, the ore pulp after selection one and the foam after sweeping one are combined to return to rough separation, after the second selection, the slurry returns to the first selection, and after the second sweeping, the slurry returns to the first sweeping.
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Description & Claims & Application Information

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