Flash smelting technology for copper or nickel sulfide ore concentrate

Abstract

A flash smelting technology for copper sulfide-nickel sulfide ore concentrate features that a flowing channel is arranged between flash smelting furnace and top-blowing smelting furnace. Said ore concentrate in suspended state is oxidized by oxygen-enriched air in flash smelting furnace, and then directly flows through said flowing channel into the top-blowing smelting furnace, where it is further oxidized by oxygen-enriched air or pure oxygen to obtain coarse copper or nickel. Its advantages are high efficiency, low energy consumption, and low cost.

Description

technical field [0001] The invention relates to the field of nonferrous metallurgy, in particular to a copper and nickel sulfide concentrate flash smelting metallurgical process. Background technique [0002] At present, the smelting of copper and nickel sulfide concentrates mainly has the following three forms: 1. Flash furnace smelting-→PS converter blowing. After copper and nickel sulfide concentrates are smelted in flash furnaces, they enter PS converter blowing. The process requires multiple PS converters for blowing, and PS converter blowing has low-altitude SO 2 Disadvantages such as serious pollution and limited processing capacity; 2. Flash furnace smelting-→flash furnace blowing. After the copper and nickel sulfide concentrates are smelted in the flash furnace, they enter the flash furnace for blowing, and flash furnace blowing exists Shortcomings of low metallurgical energy utilization rate and long production process; 3. Smelting in top-blown molten pool melting...

AI Technical Summary

Problems solved by technology

[0002] At present, the smelting of copper and nickel sulfide concentrates mainly has the following three forms: 1. Flash furnace smelting-→PS converter blowing. After copper and nickel sulfide concentrates are smelted in flash furnaces, they enter PS converter blowing. The process requires multiple PS converters for blowing, and PS converter blowing has low-altitude SO 2 Disadvantages such as serious pollution and limited processing capacity; 2. Flash furnace smelting-→flash furnace blowing. After the copper and nickel sulfide concentrates are smelted in the flash furnace, they enter the flash furnace for blowing, and flash furnace blowing exists Shortcomings of low metallurgical energy utilization rate and long production process; 3. Smelting in top-blown molten pool melting furnace -> top-blown molten pool blowing furnace blowing, after copper and nickel sulfide concentrates are smelted by top-blown molten pool melting furnace, enter Top-blown molten pool blowing furnace blowing, and top-blown molten pool melting furnace smelting has the disadvantages of low production efficiency and large energy consumption

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