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Sulfuration roasting flotation process for low-grade antimony oxide ore

A low-grade technology for antimony oxide ore, applied in flotation, solid separation, etc., can solve the problems of complex impurity removal process, difficulty in improving concentrate grade, and failure to meet smelting requirements, so as to achieve good application prospects and improve Sb Grade and recovery rate, the effect of solving the low recovery rate

Inactive Publication Date: 2014-01-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of these processes are: although the gravity separation method can obtain a qualified concentrate grade, the recovery rate is low, and about 80% of antimony oxide is difficult to recover; although the direct flotation method can obtain a high flotation recovery rate, the enrichment Low ratio, it is difficult to improve the concentrate grade, which cannot meet the smelting requirements; the reaction temperature of the chlorination volatilization method is high, and the ore to be processed requires high grade raw ore, which is difficult to apply to the treatment of low-grade antimony oxide
The wet leaching process has high requirements on equipment, and the subsequent impurity removal process of the filtrate is complex and has high environmental pollution
The existence of these problems has seriously affected the industrialization and application of antimony oxide comprehensive utilization technology

Method used

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  • Sulfuration roasting flotation process for low-grade antimony oxide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Antimony oxide raw ore contains Sb0.5%.

[0013] Grind the ore of antimony oxide, and the particle size of the grinding product is -0.074mm, accounting for 85%. The dry powder ore is mixed with 1.0% elemental sulfur powder, and it is reduced and roasted at a temperature of 300°C for 40 minutes. The roasted product is cooled naturally, and then passed To recover antimony by flotation, first add 350g / t of lead nitrate as an activator, then add amylxanthate and butylammonium black drug combination collector with a total dosage of 100g / t (amylxanthate and butylammonium black drug According to the ratio of 2:1), add 2# oil as foaming agent,

[0014] Flotation to obtain the final antimony concentrate. The test indexes are shown in Table 1.

[0015] Table 1 Antimony oxide flotation recovery index

[0016] product name

Embodiment 2

[0018] Antimony oxide raw ore contains Sb2.00%.

[0019] Grind the ore of antimony oxide. The particle size of the grinding product is -0.074mm, accounting for 65%. The dry powder ore is mixed with 3% elemental sulfur powder, and it is reduced and roasted at 400°C for 45 minutes. The roasted product is cooled naturally, and then passed To recover antimony by flotation, first add lead nitrate as an activator, then add amyl xanthate and butyl ammonium black drug combined collector with a total dosage of 200g / t (according to amyl xanthate: butyl ammonium black drug=6 :1 ratio), then add 2# oil as a foaming agent, and get the final antimony concentrate by flotation. The test indicators are shown in Table 2.

[0020] Table 2 Antimony oxide flotation recovery indicators

[0021] product name

Embodiment 3

[0023] Antimony oxide raw ore contains 0.83% Sb.

[0024] Grind the ore of antimony oxide, and the particle size of the grinding product is -0.074mm, accounting for 85%. The dry powder ore is mixed with 1.3% elemental sulfur powder, and it is reduced and roasted at 350°C for 30 minutes. The roasted product is naturally cooled, and then passed To recover antimony by flotation, first add lead nitrate as an activator, then add amyl xanthate and butyl ammonium black drug combination collector with a total dosage of 120g / t (according to amyl xanthate: butyl ammonium black drug=4 :1 ratio), then add 2# oil as a foaming agent, and get the final antimony concentrate by flotation. The test indicators are shown in Table 3.

[0025] Table 3 Antimony oxide flotation recovery indicators

[0026] product name

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Abstract

The invention discloses a sulfuration roasting flotation process for low-grade antimony oxide ore. According to oxidation antimony ore (antimony ore is cervantitepseudomorph after stibnite and stibnite, gangue minerals are mainly quartz and calcite) containing 0.5%-2% Sb (stibium, by mass ratio), the ore is filtered and dried after 65%-85% ore (by mass ratio) is grinded to be minus 0.074mm (millimeter) in fineness, 1%-3% elemental sulfur powder (by mass ratio) is mixed up in fine ore and goes through reducing roasting under the temperature of 300-450 DEG C for 30-45 minutes, roasted products cool naturally, and then combination collecting agent of amyl xanthate and ammonium dibutyldithiophosphate is added and stibium is recovered according to sulfuration antimony ore flotation process. By the aid of the sulfuration roasting flotation process, the problem of low recovery and use rate of oxidation antimony ore resources is solved, compared with conventional antimony oxide reelection and flotation processes, grade and recovery rate of stibium in the fine ore can be greatly improved, and a good application prospect is provided for middle-and-low grade complex antimony oxide ore resources difficult in flotation.

Description

technical field [0001] The invention relates to a sulfidation roasting flotation process of antimony oxide ore, in particular to a sulfidation roasting flotation process of low-grade antimony oxide ore. Background technique [0002] The separation of antimony oxide is a difficult problem in the mineral processing industry. The gravity separation method can only achieve a recovery rate of about 20%. Due to the strong surface wettability and similar properties to gangue minerals, it is difficult to achieve the separation of antimony oxide and antimony by conventional flotation. Separation of gangue minerals. There is still no effective comprehensive recovery process of antimony oxide at home and abroad. [0003] In recent years, my country has done a lot of research work on the recycling of antimony oxide ore, mainly including gravity separation, direct flotation, reduction of chlorination and volatilization, and wet leaching. The disadvantages of these processes are: althou...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00
Inventor 王毓华王进明余世磊于福顺
Owner CENT SOUTH UNIV
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