Leaching method for recovering lead from lead oxide ores, and its leaching agent

A leaching agent, lead oxide technology, applied in the improvement of process efficiency, photography process, instruments, etc., can solve the problems of instability, low solubility, and inappropriateness, and achieve the effect of low process cost and simple operation.

CN104404248AInactive Publication Date: 2015-03-11KUNMING UNIV OF SCI & TECH

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: KUNMING UNIV OF SCI & TECH
Publication Date: 2015-03-11
Estimated Expiration: Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of mineral metallurgy, and concretely discloses a leaching method for recovering lead from lead oxide ores, and its leaching agent. The method is characterized in that 5-sulfosalicylic acid is used as a leaching agent to leach lead from the lead oxide ores with the lead level of 14-75%, the leaching temperature is 20-60DEG C, lead oxide ores with the granularity of below 65[mu]m account for 70-96% of the weight of the lead oxide ores, the concentration of 5-sulfosalicylic acid is 0.1-0.5mol / L, the 5-sulfosalicylic acid leaching agent is mixed with lead oxide ore powder according to a liquid / solid mass ratio of 5-20:1, and the obtained mixture is fully stirred for 20-60min to obtain a lead-containing solution suitable for later lead extraction and electrodeposition treatment. The leaching agent has a high leaching rate and is simple to prepare, and the method uses 5-sulfosalicylic acid wastes generated in the pharmacy and chemical industry; and the leaching method guarantees the high lead leaching rate without high temperature or a pressurizing device, and also has the advantages of simple operation and low process cost.

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Description

technical field

[0001] The invention belongs to the technical field of mineral metallurgy, and in particular relates to a leaching method for recovering lead in oxidized lead ore and a leaching agent thereof. Background technique

[0002] Lead is an important non-ferrous metal. With the increasing demand for lead metal worldwide, primary lead ore is facing multiple pressures such as shortage of reserves and serious pollution in the dressing and smelting process. In nature, the industrial minerals that can be used to recover lead include lead sulfide minerals and oxide minerals. The lead sulfide minerals are mainly galena (PbS), and the lead oxide minerals are mainly white plumbite (PbCO 3 ). Lead sulfide minerals have good floatability, and concentrates can be easily obtained by flotation. As the resources of high-grade lead sulfide ore are decreasing, lead oxide ore has become an important resource for lead recovery. Compared with lead sulfide minerals, oxide minerals ha...

Claims

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