Ammonium paratungstate metallurgical slag three-section type tungsten and molybdenum reselection and enrichment process

The three-stage gravity separation process using ammonium paratungstate metallurgical slag achieves efficient recovery of tungsten and molybdenum through physical separation, solving the problems of high energy consumption, heavy pollution, and low recovery rate in existing technologies, and realizing green and environmentally friendly efficient tungsten and molybdenum recovery and resource utilization.

CN122230874APending Publication Date: 2026-06-19DAYU GUANGRONG TUNGSTEN IND CO LTD +1
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Patent Information

Application Number
CN202610706605.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-21
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing tungsten and molybdenum recovery processes are characterized by high energy consumption, heavy pollution, low recovery rate, poor enrichment effect, unreasonable processes, and weak adaptability, resulting in low resource utilization and serious environmental pollution.

Method used

A three-stage gravity separation enrichment process for ammonium paratungstate metallurgical slag is adopted, including raw material pretreatment, spiral chute roughing, shaking table cleaning, and centrifugal concentrator scavenging. This physical separation method eliminates the need for chemical reagents, achieving efficient recovery of tungsten and molybdenum.

Benefits of technology

It achieves green and environmentally friendly high-efficiency tungsten and molybdenum recycling, reduces energy consumption, improves recycling rate and resource utilization, and solves the pollution and resource waste problems existing in the current technology.

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Abstract

The invention discloses a three-section type tungsten and molybdenum reselection and enrichment process for ammonium paratungstate metallurgical slag, and belongs to the technical field of tungsten and molybdenum processes. Comprising the following steps: S1, raw material pretreatment; s2, primary roughing; s3, second-stage fine selection; s4, performing third-stage scavenging; physical reselection is adopted in the whole process, chemical agents are not added, waste gas and waste water pollution is avoided, leaching of harmful elements of the tailings reaches the standard, harmless treatment is achieved, and the problem of pyrogenic process and wet process pollution is solved; and three-section type targeted separation, roughing tailing discarding, concentration enrichment and scavenging recovery are achieved, the tungsten recovery rate and the molybdenum recovery rate are high, and the problems of low recovery rate and insufficient grade of single reselection are solved.
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