Flotation method of copper oxide ore
A technology of copper oxide ore and copper oxide, applied in flotation, solid separation and other directions, can solve the problems of many associated minerals, difficulty, large dosage of chemicals, etc., and achieve the effect of improving flotation efficiency, reducing usage, and high recovery efficiency
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[0073] First, the preparation methods of the two collectors are briefly described, as follows:
[0074] (1) Preparation method of thiohydroxamic acid:
[0075] Add hydroxylamine hydrochloride in water at a temperature of -10~0°C. After it is fully dissolved, add sodium hydroxide. After the addition is complete, continue to stir for 1 to 4 hours. After the reaction is complete, slowly add hydrochloric acid dropwise. After the dropwise addition, continue to stir for 1 hour, filter and dry the solid to obtain the product.
[0076] (2) Preparation method of thiohydrazide:
[0077] At room temperature, add xanthate to the water, after it is fully dissolved, gradually add allyl chloride dropwise to the solution, then fully react for more than 4 hours, let it stand, mix the upper layer oil with hydrazine hydrate, and put it under the condition of 40°C , stirred for 5 hours, and then distilled at 80°C to obtain the product.
[0078] It should be noted that, for the preparation meth...
Embodiment 1
[0080] Such as figure 1 Shown, carry out flotation treatment to copper oxide ore, specifically as follows:
[0081] Copper oxide copper ore is taken from a copper oxide mine in Tibet. The original ore contains 3.35% copper. Copper exists in the form of copper oxide and copper sulfide, of which copper oxide accounts for 42.92%. Minerals are ball milled by adding water in a ball mill to obtain a preliminary slurry:
[0082] Add 1000g / t of sodium carbonate, 800g / t of water glass, 500g / t of sodium sulfide, 150g / t of thiohydroxamic acid, 250g / t of thiohydrazide and 30g / t of terpineol oil into the pulp according to the corresponding dosage. Stir to obtain slurry I.
[0083] After the first rough separation of pulp I, coarse concentrate I and underflow I are obtained, and 300g / t of sodium sulfide, 100g / t of thiohydroxamic acid and 100g / t of thiohydrazide are added to underflow I, and stirred to obtain Slurry II.
[0084] After the second roughing of the pulp II, coarse concentrat...
Embodiment 2
[0094] Copper oxide copper ore is taken from a copper oxide mine in Tibet. The original ore contains 3.35% copper. Copper exists in the form of copper oxide and copper sulfide, of which copper oxide accounts for 42.92%. Minerals are ball milled by adding water in a ball mill to obtain a preliminary slurry:
[0095] Add 1000g / t of sodium carbonate, 800g / t of water glass, 500g / t of sodium sulfide, 100g / t of thiohydroxamic acid, 100g / t of thiohydroxamic acid, and 30g / t of terpineol oil into the pulp according to the corresponding dosage. Ore slurry I was obtained after stirring.
[0096] After the first rough separation of pulp I, coarse concentrate I and underflow I are obtained, and sodium sulfide 300g / t, thiohydroxamic acid 100g / t, thiohydroxamic acid 100g / t are added to underflow I, and stirred Obtain pulp II.
[0097] After the second roughing of the pulp II, coarse concentrate II and underflow II are obtained. Add 100g / t of sodium sulfide, 40g / t of thiohydroxamic acid and...
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