Combined extraction method of complex copper and cobalt raw materials

Abstract

The invention relates to a combined extraction method of complex copper and cobalt raw materials, and belongs to the field of metallurgical mines. The combined extraction method is divided into three steps of calcine water quenching, calcine reinforced leaching and calcine and raw ore combined leaching, the three procedures are mutually independent and organically unified, a water quenching leachate is independently thickened to obtain a high-concentration leachate, the amount of metal entering the subsequent leaching and washing procedures is reduced, and the comprehensive recovery rate of the metal is ensured; high-grade calcine is subjected to enhanced leaching through a high-acidity and high-reducing-agent leaching agent, and the leaching rate of the calcine is enhanced; and the residual acid and the residual reducing agent in the enhanced leaching process can continuously participate in the leaching process of the combined leaching procedure, so that the utilization efficiency of the leaching agent is improved. According to the combined extraction method, the same metal and different forms of raw materials share the same production line for combined extraction, the production process is greatly simplified, and meanwhile the combined extraction method has the advantages of being high in leaching rate, low in metal loss rate and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and mines, and in particular relates to a combined extraction method for complex copper and cobalt raw materials containing calcine, concentrate and raw ore. Background technique [0002] Valuable metals in nature usually exist in ores in the form of minerals. Some valuable metals in ores are suitable for direct extraction. For example, copper in copper oxide ore can be extracted directly by acid leaching, and some need to be extracted through a combined process of mineral processing and metallurgy. Extraction, such as copper in copper sulfide ore can be extracted by flotation-roasting-acid leaching. In the existing technology, different forms of raw materials of the same metal are usually processed by separate production systems, and there is a lack of technology to process different forms of raw materials using the same production system. When encountering different forms of raw materials, di...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to provide a combined extraction method of complex copper and cobalt raw materials, so as to solve the problem that raw materials of the same metal with different forms are usually extracted by different production lines in the prior art, resulting in a large increase in engineering investment, or even if the same metal is used Production line, there are problems such as low metal leaching rate and serious metal loss

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