Ore dressing method for low-grade gold ore heap leaching residues
A beneficiation method and heap leaching slag technology are applied in the field of beneficiation of low-grade gold-bearing ore, which can solve the problems of easy sludging of heap leaching slag, and achieve the effects of improving flotation recovery rate, reducing adverse effects and reducing adverse effects.
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Embodiment 1
[0022] Include the following steps:
[0023] a. Prepare the low-grade gold ore heap leaching slag into -0.074mm pulp with a content of 65%. The pulp is cleaned by the ore washing machine to adjust the pulp concentration of the final cleaning product to 28%, and add High-grade pyrite, the added high-grade pyrite has a particle size range of 0.054mm, the added amount is 2kg / t, and stirred for 1min;
[0024] b. Add a pulp regulator to the pulp obtained in step a, the pulp regulator is carbonate inorganic sodium salt, the amount is 100g / t heap leaching slag, and stirred for 1min;
[0025] c. Add an activator to the pulp formed in step b, the activator is a sulfate inorganic salt, the dosage is 100g / t heap leaching residue, and stir for 1min;
[0026] d. Add foaming agent and collector to the pulp formed in step c. The foaming agent and collector are terpineol oil and xanthate respectively, and the consumption is 20g / t and 40g / t respectively, and stirred for 4min ;
[0027] e. T...
Embodiment 2
[0029] Include the following steps:
[0030] a. Prepare the low-grade gold ore heap leaching slag into -0.074mm pulp with a content of 68%. The pulp is cleaned by the ore washing machine to adjust the pulp concentration of the final cleaning product to 30%, and add High-grade pyrite, the added high-grade pyrite has a particle size range of 0.064mm, the added amount is 2.2kg / t, and stirred for 2 minutes;
[0031] b. Add a pulp regulator to the pulp obtained in step a, the pulp regulator is a carbonate inorganic sodium salt, the amount is 150g / t heap leaching residue, and stirred for 2min;
[0032] c. Add an activator to the pulp formed in step b, the activator is a sulfate inorganic salt, the dosage is 150g / t heap leaching residue, and stir for 2min;
[0033] d. Add foaming agent and collector to the pulp formed in step c. The foaming agent and collector are terpineol oil and xanthate respectively, and the consumption is 25g / t and 50g / t respectively, and stirred for 5min ;
...
Embodiment 3
[0036] Include the following steps:
[0037] a. Prepare the low-grade gold ore heap leaching slag into -0.074mm pulp with a content of 70%. The pulp is cleaned by the ore washing machine to adjust the pulp concentration of the final cleaning product to 33%, and add High-grade pyrite, the added high-grade pyrite has a particle size range of 0.074mm, an added amount of 2.5kg / t, and stirring for 3 minutes;
[0038] b. Add a pulp regulator to the pulp obtained in step a, the pulp regulator is carbonate inorganic sodium salt, the amount is 200g / t heap leaching slag, and stirred for 3min;
[0039] c. Add an activator to the pulp formed in step b, the activator is a sulfate inorganic salt, the dosage is 200g / t heap leaching residue, and stir for 3min;
[0040] d. Add foaming agent and collector to the pulp formed in step c. The foaming agent and collector are terpineol oil and xanthate respectively, and the consumption is 30g / t and 60g / t respectively, and stirred for 6min ;
[004...
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