Metal smelting method

Abstract

The invention discloses a metal smelting method which comprises the following steps: introducing metallic ores containing metal oxides and reducing gas into a vertical reactor to carry out reducing treatment on the metal oxides, thereby obtaining a reduction product containing a metal substance; introducing the reduction product into a melting furnace to carry out melting separation treatment, thereby respectively obtaining furnace slag and a liquid metal simple substance; and recycling heat generated by melting separation treatment by using a waste heat boiler. The method can effectively smelt metallic ores to prepare the metal simple substance, and can also effectively recycle heat generated by the melting separation treatment.

Description

technical field [0001] The invention relates to the field of metallurgy. In particular, the invention relates to methods for metal smelting. Background technique [0002] Metal smelting methods are usually divided into three categories: thermal decomposition, thermal reduction and electrolysis. In general, metal elements behind hydrogen such as Hg, Ag, etc. are suitable for thermal decomposition, K, Ca, Na, Mg, Al, etc. are suitable for electrolysis, and other metals such as Fe, Zn, Cu, Sn, etc. are suitable for thermal decomposition. Reduction method, it can be seen that the thermal reduction method is applicable to a wide range of metals. [0003] At present, using submerged arc furnace and adding solid reducing agent for smelting is a commonly used thermal reduction smelting method, but there are two disadvantages as follows: (1) In the process of briquetting, coal powder needs to be added as reducing agent, and the slag produced by melting If the amount is large, the ...

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Problems solved by technology

[0003] At present, using submerged arc furnace and adding solid reducing agent for smelting is a commonly used thermal reduction smelting method, but there are two disadvantages as follows: (1) In the process of briquetting, coal powder needs to be added as reducing agent, and the slag produced by melting If the amount is large, the metal grade will decrease, which is not conducive to the subsequent extraction and separation; (2) Adding a solid reducing agent may bring in harmful impurities such as sulfur and phosphorus, which will increase the burden on the subsequent desulfurization and dephosphorization process, and even affect product quality and the health of production workers

[0004] Therefore, the current method of metal smelting still needs to be improved.

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