Porphyry copper molybdenum ore copper molybdenum flotation process

Abstract

The invention discloses a porphyry copper molybdenum ore copper molybdenum flotation process. The porphyry copper molybdenum ore copper molybdenum flotation process is characterized by comprising the following steps: under the fineness of -0.074 mm content of 60-70%, the mass percentage concentration of pulp is within 25-40%; lime is added to adjust the pulp system pH in a low-alkalinity range of 7-8.5; a molybdenum mineral capturing agent being 0.005-0.012% of the solid mass in the pulp is added; the flotation is performed for molybdenum ore and one part of copper ore to obtain a copper molybdenum mixed concentrate for separation; flotation tailing is added with a copper mineral capturing agent being 0.004-0.010% of the solid mass in the pulp; and the flotation is performed for the remained copper ore to obtain a copper concentrate. The natural flotability of the molybdenum mineral is fully exerted through low-alkalinity condition; the recovery of the molybdenum mineral is facilitated; the molybdenum ore capturing agent with good selectivity is added to reduce the flotation rate of the copper mineral; the separation of the mixed concentrate is facilitated; the inhibitor use level in the copper mineral in the separation process is reduced; the mutual contents of the copper and molybdenum minerals in copper and molybdenum concentrate products are effectively reduced; and the copper mineral capturing agent with good capturing performance is added in copper flotation to guarantee the recovery rate of the copper mineral.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a copper-molybdenum flotation process of porphyry-type copper-molybdenum ore. Background technique [0002] Porphyry-type copper-molybdenum deposits are the main source of output of copper-molybdenum ore and the main way to obtain copper-molybdenum metal. In the process of beneficiation, the comprehensive recovery of copper and molybdenum should be considered. [0003] Copper-molybdenum ore beneficiation methods include gravity separation, magnetic separation, flotation and flotation-magnetic separation-gravity separation combined method, among which flotation is the most widely used. Different technological processes in flotation have different effects on mineral processing indicators such as the grade and recovery rate of copper and molybdenum minerals. The recovery rate of copper and molybdenum in the mixed concentrate obtained by the full mixed flotati...

AI Technical Summary

Problems solved by technology

The recovery rate of copper and molybdenum in the mixed concentrate obtained by the full mixed flotation process is relatively high, and the main process structure is also short, but it is difficult to separate the mixed concentrate of copper, molybdenum and sulfur, and the content of valuable metals in each concentrate is high; some preferential flotation processes The process is suitable for ores with low copper content and can be desulfurized in advance, but there are still difficulties in separating copper and molybdenum; the traditional equal-floatable process is often difficult to create a favorable environment for molybdenum flotation, and the obtained copper-molybdenum mixed concentrate contains less copper. High, not conducive to the subsequent separation of copper and molybdenum, copper flotation is often due to insufficient collection capacity of the collector, resulting in low recovery of copper minerals