Method for recycling valuable components from nickel-containing smelting slag

Abstract

The invention relates to a method for recycling valuable components from nickel-containing smelting slag. The method includes the steps that nickel smelting slag is added in a reaction device, calcium-series mineral and an additive are added, mixed slag is formed, the mixed slag is heated to be in the molten state to be used as reaction slag and is evenly mixed, the reaction slag is monitored in real time, the mixed reaction slag is made to meet the condition a and the condition b at the same time through regulation and control, and slag subjected to reaction is obtained; and S2, separation and recycling are conducted. By means of the method, molten nickel slag physical heat resources and hot-state metallurgy flux can be sufficiently utilized, and cold-state clinker can also be processed;by adding the additive, conducting even mixing and controlling the slag oxygen position, slag metallurgy is achieved, and the synchronous separation technology for copper and iron in the nickel smelting slag is achieved; and the problem that because a large amount of clinker is stacked at present, environment pollution is caused, and heavy metal element pollution is caused are solved.

Description

Technical field

[0001] The invention belongs to the technical field of slag metallurgy, and specifically relates to a method for recovering valuable components from nickel-containing smelting slag. Background technique

[0002] During the process of pyrometallurgical smelting of nickel, a large amount of nickel smelting slag is produced. Nickel smelting slag includes nickel smelting slag produced by the "matte smelting" process, depleted slag after the "copper matte smelting" process, and top blowing smelting The nickel settles in the slag. my country's Jinchuan Company adopts "flash smelting" and "top blow smelting" for nickel concentrate smelting, which produces 1 million tons of nickel smelting slag every year, and the accumulated storage volume currently exceeds 10 million tons. The long-term storage of valuable components such as copper, iron, nickel, cobalt, zinc, lead, gold and silver in nickel smelting slag wastes resources and pollutes the environment.

[0003] The iron ...