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Gravity separation and floatation combined separating technology for antimony oxide ores

An antimony oxide and process technology, which is applied in the field of antimony oxide ore re-floating combined separation process, can solve the problems of low ore grade, waste of heat, non-compliance with energy saving and emission reduction, etc., and achieve the effect of improving grade and recovery rate.

Active Publication Date: 2013-01-30
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: high temperature, high pressure strong acid or strong alkali treatment is required, high energy consumption, great environmental hazards, serious damage to equipment, difficult maintenance, complicated process in actual production, difficult operation control, entering roasting or The ore grade in the volatilization furnace is too low, resulting in a large waste of heat, which does not meet the requirements of energy saving and emission reduction. The existence of these problems has seriously affected the industrialization and application of antimony oxide comprehensive utilization technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The antimony oxide raw ore containing 1.52% Sb is ground, and the particle size of the grinding product is -0.074mm, which accounts for 80%. 25-30%, use NaOH to adjust the pH of the pulp to 9-10, add 50g / t of decanyl primary amine, reverse flotation to obtain carbonate and a small amount of silicate gangue mineral tailings, and use H 2 SO 4 Adjust the pH to 6-7, add lead chloride 30g / t, add humic acid (sodium) 40g / t, add dodecyl sulfate 60g / t to flotation to obtain antimony oxide concentrate, and the product in the tank is silicate Gangue mineral tailings, shaker tailings and flotation tailings are combined into total tailings. The test indicators are shown in Table 1.

[0016] Table 1 Antimony oxide ore separation index 1

[0017] product name

Embodiment 2

[0019] Grind the antimony oxide raw ore containing 3.14% Sb. The particle size of the grinding product is -0.074mm, accounting for 75%. 25-30%, use NaOH to adjust the pH of the pulp to 10-11, add 60g / t of dodecyl primary amine, reverse flotation to obtain carbonate and a small amount of silicate gangue mineral tailings, and use H 2 SO 4 Adjust the pH to 6-7, add copper sulfate 50g / t, add humic acid (sodium) 45g / t, add cetyl sulfate 75g / t to get antimony oxide concentrate, and the product in the tank is silicate veins Rock mineral tailings, shaker tailings and flotation tailings are combined into total tailings, and the test indicators are shown in Table 2.

[0020] Table 2 Separation index 2 of antimony oxide ore

[0021] product name

Embodiment 3

[0023] The raw ore containing 7.53% Sb antimony oxide is ground, the particle size of the grinding product is -0.074mm, accounting for 70%, and it is pre-enriched through the spiral chute. -30%, use NaOH to adjust the pH of the pulp to 10-11, add octadecyl primary amine 60g / t, reverse flotation to obtain carbonate and a small amount of silicate gangue mineral tailings, the product in the tank is washed with H 2 SO 4 Adjust the pH to 6.5-7.5, add copper sulfate 50g / t, add humic acid (sodium) 30g / t, add cetyl sulfate 85g / t to obtain antimony oxide concentrate, and the product in the tank is silicate veins Rock mineral tailings, the tailings of the spiral chute and the flotation tailings are combined into the total tailings, and the test indicators are shown in Table 3.

[0024] Table 3 Antimony Ore Separation Index 3

[0025] product name

[0026] The test results from Tables 1 to 3 show that using the antimony oxide ore refloating combined separation process of the...

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Abstract

The invention discloses a gravity separation and floatation combined separating technology for antimony oxide ores. A selective crushing technology is adopted for a quartz-calcite antimony oxide ore containing 0.50%-7.50% of Sb; over-crushing and argillation of the antimony oxide are reduced; the pre-concentration for the antimony oxide is realized by adopting a gravity separation method; the pH of the pulp of a rough concentrate obtained from the gravity separation is adjusted to 9-11; primary amine cation collecting agents are added and the reverse flotation is performed for removing carbonate gangue ores; the pH of the pulp of the product in a tank obtained from the reverse flotation is adjusted to 6-8; metal ions are added as antimony oxide flotation activating agents; an organic inhibitor is added for inhibiting quartz gangue ores; and alkyl sulfate anion collecting agents are added for performing floatation on the antimony oxide ores, so that the floatation separation of the antimony oxide and quartz gangue ores is realized. The gravity separation and floatation combined separating technology for the antimony oxide ores provided by the invention is suitable for the treatment of middle / low-grade antimony oxide ores. Compared with the grade and the recovery rate of the antimony oxide concentrate obtained according to a single gravity separation technology, the grade and the recovery rate of the antimony oxide concentrate obtained according to the gravity separation and floatation combined separating technology are both obviously increased.

Description

technical field [0001] The invention relates to an ore separation process, in particular to an antimony oxide ore refloating combined separation process. Background technique [0002] The separation of antimony oxide, especially fine-grained antimony oxide, has always been a difficult problem in the mineral processing industry. Due to the fine particle size and easy sliming, the commonly used gravity separation method can only achieve a recovery rate of about 20%, and the surface wettability of antimony oxide is strong. Similar to gangue minerals, it is a relatively difficult to planktonic ore. There is still no mature industrial antimony oxide beneficiation process at home and abroad. [0003] In recent years, my country has made some progress in the comprehensive utilization of antimony oxide ore, mainly including reducing chlorination volatilization, wet leaching, and mineral heat conversion. The disadvantages of these processes are: high temperature, high pressure stron...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/06
Inventor 王毓华王进明盛忠杰殷志伟余世磊孙伟
Owner CENT SOUTH UNIV
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