A treatment method for applying copper smelting waste slag to sintering

Abstract

The invention discloses a treatment method with copper smelting waste residues applied to sintering. The treatment method with the copper smelting waste residues applied to sintering comprises the following steps that the copper smelting waste residues are crushed into particles of which 100% of the particles are less than 5mm in particle size and 10% of the particles are less than 1mm in particlesize, and copper smelting waste residue powder is obtained; the copper smelting waste residue powder and laterite-nickel ore are proportioned and uniformly mixed, and uniformly mixed ore powder is obtained; the uniformly mixed ore powder, solid fuel, a composite fusing agent and return ore are proportioned, and then are uniformly mixed, and a mixed material to be sintered is obtained; and the mixed material to be sintered are uniformly mixed and granulated in a cylindrical mixing machine to obtain a grain material to be sintered, the grain material to be sintered undergoes material distributing, igniting, sintering and cooling in a sintering machine to obtain primary sintered ore; and the primary sintered ore undergoes cooling, crushing and screening to obtain finished sintered ore. According to the treatment method with the copper smelting waste residues applied to sintering, the iron and copper elements in the copper smelting waste residues can be recycled, the problem that copper and iron are difficult to separate is solved, the emission of solid waste gas can be further reduced, a large amount of solid waste treatment cost can be saved, the production cost can be effectively reduced, and the purpose of sustainable development can be achieved.

Description

technical field [0001] The invention relates to the technical fields of metallurgy and material science, in particular to a treatment method for applying copper smelting waste residue to sintering. Background technique [0002] More than 80% of the world's copper is produced by pyrometallurgy, and usually 1 ton of matte produces about 2.2 tons of copper slag. At present, my country's annual output of copper smelting slag is more than 15 million tons; and the accumulated smelting slag stockpile is more than 170 million tons. The stockpiling of copper smelting slag not only occupies a large amount of land, causes serious secondary pollution of heavy metals, but also wastes precious resources such as copper and iron. [0003] For a long time, my country's iron ore and copper concentrate resources have been in serious shortage, and the dependence on imported ore is as high as 65% and 80% respectively. In order to alleviate the shortage of resources, the mining grades of copper...

AI Technical Summary

Problems solved by technology

However, due to the high content of physical water and crystal water in low-grade lateritic nickel ore, large burning loss, fast sintering speed, short sintering high temperature retention time, low sintering end temperature, and fast cooling speed of the material surface, the sintering ore-forming conditions deteriorated sharply. Ore strength is much lower than ordinary iron ore sinter

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