A kind of copper ore associated molybdenum sorting method

Abstract

The invention discloses a copper ore associated molybdenum screening method which comprises the following steps: in a process of performing copper-sulfur separation on copper-sulfur crude concentratecontaining molybdenum minerals obtained in a copper ore roughing process, inhibiting the molybdenum minerals in the copper-sulfur crude concentrate into tailings of the copper-sulfur separation operation, and returning copper minerals in the copper-sulfur separation operation into the copper-sulfur separation operation procedure; performing dehydration and reagent removal on the copper-sulfur separated tailings containing the molybdenum minerals, adding an acid to regulate the pH value of the tailings, adding a sulfur separation reagent and a molybdenum separation reagent, performing sulfur-molybdenum dressing, and obtaining qualified sulfur concentrate containing the molybdenum minerals; performing molybdenum-sulfur separation on the qualified sulfur concentrate containing the molybdenumminerals, adding a sulfur-iron ore inhibitor and a molybdenum dressing reagent into the molybdenum-sulfur separation operation, thereby obtaining the qualified molybdenum concentrate and qualified sulfur concentrate in the molybdenum-sulfur separation operation. According to the method disclosed by the invention, in the copper-sulfur separation operation of the copper ore, the grade of the copperconcentrate is improved, and limitation of molybdenum mineral recovery can be avoided; the molybdenum concentrate with high recovery rate can be obtained while obtaining the copper concentrate.

Description

technical field [0001] The invention relates to a non-ferrous metal beneficiation, in particular to a method for beneficiating copper ore associated molybdenum metal minerals. Background technique [0002] The molybdenite crystal has a hexagonal layered or plate-like structure, which is formed by the S-Mo-S structure along the interlayer van der Waals bond and the interlayer polar covalent bond S-Mo, and the bonding force between layers is very weak. The interlayer covalent bond is very strong. Molybdenite is very easy to produce in sheets or plates along the cracked layers between structures, which is why molybdenite has high natural buoyancy. However, the current separation technology of molybdenum minerals associated with copper ore is basically enriching molybdenum minerals in copper concentrates, and then separating copper and molybdenum from copper concentrates containing molybdenum minerals to obtain qualified molybdenum concentrates . However, before the separatio...

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Problems solved by technology

However, before the separation of copper and sulfur, one or more stages of regrinding processes are generally set up, which increases the proportion of S-Mo cut surfaces in the layer and reduces the floatability, and lime that inhibits pyrite minerals is often added in most operations. , to improve the grade of copper concentrate; however, because lime has a strong inhibitory effect on molybdenum minerals, it seriously affects the recovery rate of molybdenum minerals; As for the recovery rate of molybdenum associated with copper ore in some concentrators, it is only about 30%.

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