Closed electric furnace and titanium slag smelting process

Abstract

This invention relates to a sealed electrical furnace and technology of sealed furnace smelt titanium slag. The electrode hole of the sealed furnace adopt the flexible dry seal; the operate power of electrical furnace is 3200 to 8400kVA; the pole heart circle of the electrical furnace is 1500 to 2350mm; each feed pipe 8a, 8b is independently controlled. The technology of sealed furnace smelt titanium slag provided by the invention; adopt special mixture making ingredient and smelting technology when run a new furnace, so that the furnace wall is articulated with high melting point substance with thickness of 100 to 150mm to form furnace slag, protect the flame-proof material. The technology of sealed furnace smelt titanium slag provided by the invention, compared with the flow of open furnace or petticoat pipe accessible furnace: (1) no dust, no noise in smelting process; (2) the furnace condition is stable, no collapse of materials, no slag turning over, not need to tamp trace furnace; (3) no consumption of binding admixture such as asphalt and pulp; furnace gas is mainly fuel gas without toxic and malodorous substance as decomposition of asphalt; (4) The gas is not directly discharged, the sensible heat can be used to preheat furnace charge, and can be used as industrial fuel or reducing gas after purification.

Description

technical field [0001] The invention relates to a closed electric furnace and a corresponding titanium slag smelting process, belonging to the field of titanium chemical industry. Background technique [0002] my country's titanium slag industry is mainly distributed in Panzhihua, Yunnan, Guangxi, Jinzhou, Guizhou and other places. All the electric furnaces used are open electric furnaces or low fume hood electric furnaces, which have three serious pollutions: dust, exhaust gas and noise. [0003] The development of titanium slag technology in my country has gone through three stages of scientific and technological research in the "Sixth Five-Year Plan", "Seventh Five-Year Plan" and "Ninth Five-Year Plan". The more important tests include: [0004] (1) Pre-oxidation process test: From 1980 to 1982, the test research was undertaken by Beijing Nonferrous Research Institute, Jinzhou Ferroalloy Factory, Shenyang Aluminum and Magnesium Design Institute and Beijing Iron and Steel ...

AI Technical Summary

Problems solved by technology

During the smelting process of titanium slag, the chemical activity of the furnace charge is high, the electrical conductivity changes greatly, the viscosity changes greatly with the temperature and the smelting process, the furnace condition is unstable, the frequency of electrode series movement is high, and the amplitude is large, and the furnace charge seriously corrodes the refractory material of the furnace wall.

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