Method for producing copper and iron containing mixed slag

Abstract

The invention relates to a method for producing copper and iron containing mixed slag. The method comprises the following steps: S1, mixing the slag, namely, adding copper slag to a smelting reactiondevice; adding one or a plurality of lead smelting slag, blast furnace slag, steel slag and iron alloy slag to form the mixed slag; synchronously adding one or a plurality of copper oxide mineral, copper sulphide mineral and copper-containing materials; uniformly mixing; heating the mixed slag until a molten state is achieved so as to obtain the reaction slag; monitoring the reaction slag in realtime; and regulating and controlling to obtain the reacted slag; and S2, separating and recovering. According to the method, the hot slag can be handled, and molten copper slag, the molten metallurgical slag, a physical heat source and a hot metallurgical flux are fully utilized, and moreover, cold slag can be handled; the metallurgical modification of the slag can be achieved by slag mixing or cold mixing. Therefore, the efficient recycling of metallurgic resource and heat energy is effectively realized; and the environmental pollution is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of slag metallurgy, and in particular relates to a method for producing mixed slag containing copper and iron. Background technique [0002] my country is the country with the largest output of metal copper, metal lead, steel and ferroalloy in the world. The copper pyrometallurgy process "matte smelting-copper matte blowing" produces copper slag, which is the first solid waste in heavy nonferrous metallurgy. Lead pyro-smelting process The traditional lead smelting process "sintering-blast furnace reduction-fuming furnace" or the direct lead smelting process "oxidative blowing-high lead slag reduction-fuming furnace" produces a large amount of lead smelting slag. Iron and steel metallurgical slag, such as blast furnace slag, steel slag, and ferroalloy slag, is produced in the process of iron and steel production, which is the first solid waste in iron and steel complexes. [0003] Copper slag includes coppe...

AI Technical Summary

Problems solved by technology

[0010] At the same time, the existing copper pyrometallurgical process is suitable for processing copper sulfide ore, but it is difficult to process copper oxide ore

At present, there is no technology that can simultaneously process copper oxide minerals, copper sulfide minerals and copper-containing materials on a large scale to realize the production of copper and iron and the full utilization of secondary resources. The technology is used to deal with the environmental pollution of slag.