Beneficiation method for complex multi-metal sulfide electrum comprehensive recovery

A beneficiation method and multi-metal technology, applied in the field of smelting, can solve the problems of fine embedded particle size, difficult processing, complex embedded relationship between sphalerite and pyrite, etc., and achieve efficient recovery and remarkable effect

Inactive Publication Date: 2014-08-20
ZIJIN MINING GROUP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Complex polymetallic silver-gold sulfide deposits have many co-associated components, high comprehensive utilization value, but extremely difficult to treat
There are many technical difficulties in the comprehensive recovery of complex polymetallic silver-gold sulfide ores, which are specifically reflected in: 1) the composition of the ore is complex, and the metal minerals are mutually wrapped and exchanged, and the structure is complex, and it is difficult to dissociate from each other; 2) the type of primary slime More, high content, flotation slurry has high viscosity and poor fluidity, which deteriorates the flotation environment; 3) Chalcopyrite, sphalerite, and galena are finely embedded, and the contradiction between the dissociation of mineral monomers and the degree of mudification is prominent ; 4) The intercalation relationship between sphalerite and pyrite is extremely complicated, and the separation of zinc and sulfur is difficult
There have been many studies on this type of ore at home and abroad. A large number of experimental studies and production practices over the years have shown that due to the inability to solve the above technical problems, the traditional production process and technology are not deep enough for the comprehensive utilization of co-associated useful components, and the resource utilization rate is low. Low

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  • Beneficiation method for complex multi-metal sulfide electrum comprehensive recovery
  • Beneficiation method for complex multi-metal sulfide electrum comprehensive recovery

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Example 1: First, the crushed raw ore and water are added to a ball mill at a ratio of 1:1 for grinding until the grinding fineness of the discharged material reaches -0.074mm, accounting for 72%. Carry out Nelson gravity separation with ball mill discharge, add 450g / t of sodium sulfite (based on the weight of raw ore dry ore, the same below) and 900g / t of zinc sulfate to the tailings of Nelson gravity separation, and then add 450g / t of water glass, After pulping with 90g / t of BK301 and 25g / t of pine alcohol oil, roughing of gold, lead and copper was carried out; addition of 75g / t of water glass was used for the first selection of gold, lead and copper, and the second selection of gold, lead and copper was used Blank selection; add BK301 dosage 25g / t, terpineol oil dosage 15g / t for the first gold-lead-copper sweep, add BK301 dosage 15g / t for the second gold-lead-copper sweep, gold-lead-copper each time Concentration and gold-lead-copper screening are returned to the pre...

Embodiment 2

[0014] Embodiment 2: According to figure 1 The embodiment of the technological process of the present invention, the test steps, process parameters, and medicament system are exactly the same as those in Example 1. The technological indexes of embodiment 1 and embodiment 2 of the present invention are shown in table 1. Shown by the implementation situation shown in table 1, adopt the inventive method, the raw ore of embodiment 1 contains gold 2.6g / t, silver 70.0g / t, zinc 0.75%, copper 0.20%, lead 0.65%, comprehensive beneficiation index is: Nielsen Gravity separation concentrate contains 1055.0g / t gold, recovery rate 42.61%, silver content 2920.0g / t, recovery rate 4.38%; gold-lead-copper flotation concentrate contains gold 34.08g / t, recovery rate 53.09%, silver content 1409.3% g / t, the recovery rate is 81.54%; the total recovery rate of gravity + flotation gold is 95.70%, and the total recovery rate of silver is 86.12%. The zinc concentrate grade is 47.3%, and the zinc recov...

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Abstract

The invention provides a beneficiation method for complex multi-metal sulfide electrum comprehensive recovery. According to the technical scheme, an efficient re-separation technology of Knelson concentrators is adopted according to the property and the characteristic of multi-metal sulfide electrum, and coarse gold particles are recovered in the early stage; through composite reagents of sodium sulfite, zinc sulfate and sodium silicate, slurry is highly dispersed, sphalerite and pyrite are inhibited intensively, and a novel collecting agent BK301 is adopted for synchronous flotation enrichment of gold, lead and copper minerals; copper sulfate is adopted for activation, and a fine separation technology is performed many times under high alkalinity (the pH of ore pulp ranges from 11 to 12), influences of slurry are effectively eliminated, and active separation on the sphalerite is achieved; for high-viscosity micro-fine particle cyanidation slag, the composite reagents of lime and zinc sulfate are used for intensively inhibiting copper and sulfur, and optimized lead separation is performed; the adjusting agent sodium pyrophosphate is used for efficient activated separation of copper, and therefore lead separation and copper separation are separately performed.

Description

1. Technical field [0001] The invention relates to the smelting industry, in particular to a method for beneficiation of polymetallic ores, in particular to a method for comprehensive recovery of complex polymetallic silver sulfide gold ore. 2. Background technology [0002] With the acceleration of the industrialization of mineral processing and the large-scale development of limited mineral resources, the comprehensive recovery of elements from complex refractory ores will become the main object of development and utilization in the future. [0003] Complex polymetallic silver-gold sulfide deposits have many co-associated components and high comprehensive utilization value, but the treatment is extremely difficult. There are many technical difficulties in the comprehensive recovery of complex polymetallic silver-gold sulfide ores, which are specifically reflected in: 1) the composition of the ore is complex, and the metal minerals are mutually wrapped and exchanged, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/02B03B7/00
Inventor 鲁军王春廖德华
Owner ZIJIN MINING GROUP
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