A beneficiation method for improving copper and molybdenum recovery rate of porphyry copper-molybdenum ore

By employing a "rapid flotation + enhanced flotation" process in porphyry copper-molybdenum deposits, combined with specific collectors and pH adjustment, the problem of difficult copper-molybdenum separation was solved, and a significant improvement in copper-molybdenum recovery rate was achieved.

CN117920454BActive Publication Date: 2026-06-09WESTERN MINING CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WESTERN MINING CO LTD
Filing Date
2024-02-01
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing technologies, porphyry copper-molybdenum deposits have low ore grade, mixed composition, fine particle size, and complex intercalation, which makes copper-molybdenum separation difficult. In high-alkali environments, the floatability of molybdenum deteriorates, affecting the copper-molybdenum recovery rate.

Method used

The process employs "rapid flotation + enhanced flotation," which involves adding rapid flotation operations to the conventional process to float easily floatable minerals in a low-alkali environment and enhancing the recovery of difficult-to-float minerals in a high-alkali environment. Specific collectors such as XK101, 8250, and BK345A are used to optimize the pulp pH and reagent regime.

Benefits of technology

It significantly improved the recovery rates of copper and molybdenum, with copper recovery increasing by 0.56-2.44 percentage points and molybdenum recovery increasing by 11.78-6.28 percentage points, thereby enhancing the utilization efficiency of copper and molybdenum resources.

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Abstract

The application discloses a beneficiation method for improving copper and molybdenum recovery rate of porphyry copper-molybdenum ore, which comprises the following steps: grading after grinding of the raw ore, adding XK101+8250 and BK345A+kerosene as copper and molybdenum collectors when the pH value of the ore pulp is 9-10, then the ore pulp enters into fast floating operation to obtain concentrate 1, the fast floating tailings enter into roughing operation, the pH value of the ore pulp is 11-12, XK101+8250 is added as a collector to perform intensified flotation, and concentrate 2 is obtained, so that the comprehensive recovery rate of copper and molybdenum is improved. In this way, the copper and molybdenum recovery rate can be effectively improved by combining the collectors and the chalcopyrite, chalcocite and other copper minerals in the raw ore and increasing the fast selection process. Meanwhile, the roughing operation is carried out in a high-alkali environment, and the efficient collectors are used, so that the recovery of the difficult-to-float minerals can be intensified. According to the different pH values of the ore pulp, the beneficiation reagents with economic and strong collecting capacity are screened, and the efficient recovery of the useful minerals is realized.
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