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Method for preparing flotation collector containing gold mine sulfide

A collector and sulfide technology, applied in flotation, solid separation and other directions, can solve the problems of unfavorable sulfuric acid environment, equipment corrosion, increased cost, etc., and achieve the effect of reducing production cost, simplifying dosing points, and good selectivity.

Inactive Publication Date: 2009-12-09
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the activation of pyrite and arsenopyrite needs to be carried out in acidic medium, some mines use sulfuric acid to clean the surface of the minerals, and then add copper sulfate to improve the activation effect of the minerals, so as to improve the recovery rate of gold-bearing minerals, because sulfuric acid has strong corrosion property, causing equipment corrosion, but also increased costs; in addition, the addition of sulfuric acid is also harmful to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of a gold-containing sulfide mineral flotation collector, comprising the steps of:

[0018] Add 300ml of n-decene and 30g of aluminum trichloride catalyst into a 1L high-pressure reactor equipped with a thermometer, agitator, inlet pipe, and exhaust pipe, keep the temperature at 50°C, keep stirring, and intermittently feed hydrogen sulfide gas to maintain the reactor. The internal pressure is 2MPa. After reacting for 3 hours, it is washed with hydrochloric acid solution and sodium hydroxide solution. After the organic phase is separated, it is rectified under reduced pressure. The distillate at 180-230°C is collected under normal pressure, which is the gold-containing sulfide mineral collector.

Embodiment 2

[0020] A preparation method of a gold-containing sulfide mineral flotation collector, comprising the steps of:

[0021] Add 500ml of n-decene and 50g of aluminum trichloride catalyst into a 1L high-pressure reaction kettle equipped with a thermometer, agitator, inlet pipe, and exhaust pipe, keep the temperature at 50°C, keep stirring, and intermittently feed hydrogen sulfide gas to maintain the kettle. The internal pressure is 3MPa. After reacting for 5 hours, it is washed with hydrochloric acid solution and sodium hydroxide solution. The organic phase is separated and then rectified under reduced pressure. The fraction at 180-230°C is collected under normal pressure to be the gold-containing sulfide mineral collector.

Embodiment 3

[0023] This embodiment is an application example of the collector described in Embodiment 1 in the flotation of gold-containing sulfide minerals.

[0024] 1. Mineral raw materials:

[0025] The gold grade of the ore is 3.17g / t, and the gold-bearing minerals are mainly pyrite, arsenopyrite, and a small amount of pyrrhotite; the gangue minerals are mainly quartz and calcite.

[0026] 2. Flotation process: 1 roughing, 3 sweeps, 3 fine selections.

[0027] 3. Drug system: 90g / t of the collector, 80g / t of No. 2 oil, and 500g / t of sodium hydroxide.

[0028] 4. Operating conditions: the pH value of the slurry during flotation is 8-9.5; during the flotation process, sodium hydroxide and collectors are first added to the grinding machine to grind the ore until the mineral monomers are dissociated, and then foam The No. 2 oil is sent to the mixing tank for slurry adjustment, and then enters the flotation machine for aerated flotation to obtain the concentrate.

[0029] According to t...

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Abstract

The invention provides a method for preparing a flotation collector containing gold mine sulfide. The method comprises the following steps of: adding 300 to 500 ml of n-decene and 30 to 50 g of aluminum trichloride catalyst into a 1L high pressure reaction kettle provided with a thermometer, a stirrer, a gas inlet pipe and a gas outlet pipe, keeping the temperature of 50 DEG C, continuously stirring the mixture, discontinuously filling hydrogen sulfide gas in the reaction kettle, maintaining the pressure in the kettle to 2 to 3 MPa, washing the reaction product by hydrochloric acid solution and solution of sodium hydroxide after 3 to 5h of reaction, separating an organic phase for decompression rectification, and collecting a fraction at the temperature of between 180 and 230 DEG C under the normal pressure, which is the flotation collector containing gold mine sulfide. When the flotation collector containing gold mine sulfide is used, an activator is not or less needed, and the total recovery of the gold-containing sulfide ores reaches more than 90 percent, and the production cost is lowered.

Description

1. Technical field [0001] The invention relates to a gold-containing sulfide mineral flotation collector, in particular to a gold-containing sulfide mineral flotation collector whose carrier minerals are mainly pyrite and arsenopyrite. 2. Background technology [0002] The carrier minerals of gold-bearing sulfide ores are mainly pyrite and arsenopyrite, and the recovery method is mainly flotation. Due to the poor floatability of gold-bearing pyrite and arsenopyrite, it is necessary to add sulfuric acid to clean the mineral surface during the flotation process, and then activate it with copper sulfate. The collector is mainly high-grade xanthate, supplemented by black medicine Pharmacy system. Since the activation of pyrite and arsenopyrite needs to be carried out in acidic medium, some mines use sulfuric acid to clean the surface of the minerals, and then add copper sulfate to improve the activation effect of the minerals, so as to improve the recovery rate of gold-bearing ...

Claims

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Application Information

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IPC IPC(8): B03D1/001B03D101/02B03D103/02
Inventor 陈建华魏宗武穆枭兰丽红陈晔
Owner GUANGXI UNIV
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