A combined extraction method for complex copper and cobalt raw materials

Abstract

The invention relates to a combined extraction method of complex copper and cobalt raw materials, which belongs to the field of metallurgical mines. The invention is divided into three steps of calcine water quenching, calcine enhanced leaching and joint leaching of calcine and raw ore. The three processes are mutually independent and organically unified, and the water quenching leachate is separately dense to obtain a high-concentration leachate, which reduces the need for subsequent leaching and washing. The amount of metal in the process can ensure the comprehensive recovery rate of metal; the leaching of high-grade calcined sand is enhanced by high acidity and high reducing agent leaching agent, and the leaching rate of calcined sand is enhanced; the residual acid and residual reducing agent in the process of enhanced leaching can continue to participate in the combined The leaching process of the leaching process improves the utilization efficiency of the leaching agent. The combined extraction method of the present invention enables the raw materials of the same metal with different forms to share the same production line for joint extraction, which greatly simplifies the production process and has the advantages of high leaching rate and low metal loss rate.

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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