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.
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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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