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Method for strengthening noble metal enriching by copper-based solid waste cooperative matte smelting

A precious metal, copper-based technology, applied in chemical instruments and methods, non-metallic elements, inorganic chemistry, etc., can solve the problems of high processing cost, large output of three wastes, poor material adaptability, etc., achieving simple process flow and strong adaptability of raw materials. , The effect of high temperature volatilization is small

Inactive Publication Date: 2019-10-29
CENT SOUTH UNIV
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Problems solved by technology

Although the hydrometallurgical method has the advantages of simple process, good metal separation effect and high metal recovery rate, it has the disadvantages of poor material adaptability, high treatment cost and large output of three wastes, making it difficult to widely promote the method

Method used

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  • Method for strengthening noble metal enriching by copper-based solid waste cooperative matte smelting

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Embodiment 1

[0021] The copper-based solid waste described in the present invention has two kinds, the first kind of electroplating sludge, the mass percentage content of its main component is: Cu12.35% and Au12g / t; The second kind is wet-process copper sludge, its main The mass percentage of the components is: Cu32.0% and Au40g / t; the mass percentage of the main component of sodium pyroantimonate is: NaSb(OH) 6 98.2%, the mass percentage of FeO in iron ore is 58.44%, the mass percentage of CaO in limestone is 48.5%, and the FeS in pyrite 2 The mass percentage is 85.3%.

[0022] First, mix sodium pyroantimonate, starch and water according to the weight ratio of 100:5.0:6.0 and then granulate, keeping the particle size of sodium pyroantimonate at 1.5mm; secondly, mix sodium pyroantimonate pellets, copper-based solid waste and yellow The iron ore is mixed with ingredients so that the contents of antimony, copper and sulfur in the mixture are kept at 0.80%, 26.5% and 18.0% respectively. Add...

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Abstract

The invention discloses a method for strengthening noble metal enriching by copper-based solid waste cooperative matte smelting. The method comprises the following steps: mixing sodium pyroantimonatewith starch to pelletize, then, mixing the pelletized pyroantimonate and starch with the copper-bases solid waste, controlling content of antimony, copper and sulfur in a material mixture to be withina required range, introducing oxygen-rich air to oxidize and melt at a high temperature after adding flux, reducing Sb (V) in sodium pyroantimonate into metal, enabling the metal to act with noble metal in the copper-based solid waste, enriching the metal and the noble metal in copper matte, and feeding smelting slag to ore-dressing treatment. The core of the method is that properties of small high-temperature volatility and easy reduction by starch of the sodium pyroantimonate are firstly utilized, so that the sodium pyroantimonate is reduced into metal antimony in a cooperative matte smelting process, and is combined with noble metal as a antimony alloy; then, copper matte has certain dissolvability on the antimony alloy, so that the antimony alloy is preliminarily enriched into the copper matte; and finally, the purpose of efficiently enriching noble metal in a copper-based solid waste cooperative matte smelting process is realized. The method has the advantages of being strong inraw material adaptation, high in noble metal recovery rate and simple in process flow.

Description

technical field [0001] The invention relates to a pyrometallurgical process in the field of nonferrous metallurgy, in particular to a pyrometallurgical method for strengthening and enriching precious metals in a copper-based solid waste cooperative matte-making smelting process. Background technique [0002] Based on the excellent physical and chemical properties of copper, it is widely used in various fields such as electrical, defense industry, light industry, machinery manufacturing and construction. It is second only to aluminum in the consumption of non-ferrous metal materials in my country. At present, the proportion of copper use is roughly as follows: 48-49% in the electrical industry, 19-20% in the communication industry, 14-16% in construction, 7-10% in transportation, and 7-9% in home appliances and others. Due to the growth of the global economy, the demand for copper has increased significantly, and the world production and consumption have basically remained th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C01B17/74C22B11/02C22B15/00C22B30/02
CPCC01B17/74C22B7/001C22B11/023C22B15/0056C22B30/02Y02P10/20
Inventor 刘伟锋张杜超陈霖杨天足贾锐刘好男邓循博
Owner CENT SOUTH UNIV
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