Device for non-slag production of iron, aluminum and titanium by utilizing reduction molten-salt growth method

Abstract

An iron, aluminum and titanium molten salt reduction slag-free production device, including a rotary kiln (1), a smelting separation furnace (2) and a molten-salt reaction tank (3), wherein the tail portion of the smelting separation furnace (2) communicates with the head portion of the rotary kiln (1) by means of an airtight channel; a rotary kiln gas-distribution disc (1a) is arranged on the rotary kiln (1); a high-temperature molten slag outlet (2a) is provided at the head portion of the smelting separation furnace (2); the molten-salt reaction tank (3) is provided with a liquid inlet (3c) thereon, with an ammonia gas outlet (3a) at the top portion thereof, with a high-temperature molten slag inlet (3b) at the upper portion thereof, and with a reaction-produced solid-liquid mixture outlet (3d) at the lower portion thereof; the high-temperature molten slag outlet (2a) communicates with the high-temperature molten slag inlet (3b), and the ammonia gas outlet (3a) communicates with low-temperature residual heat power generation (5). The present invention reuses high-temperature molten slag, thus turning waste to wealth, and solves the issues of being unable to efficiently utilize latent thermal energy from high-temperature molten slag and being unable to extract valuable elements.

Description

technical field [0001] The invention belongs to the technical equipment field of ferrous metal and nonferrous metal smelting and inorganic salt, and specifically relates to a device for slag-free production of iron, aluminum and titanium by reducing molten salt. Background technique [0002] At present, in the iron and steel industry, the high-temperature molten slag after iron extraction is discarded, and its latent heat is wasted or the utilization rate is very low; in the production of titanium dioxide, only titanium is extracted, and the others are all discarded; in the production of electrolytic nickel by hydrometallurgy, only nickel is extracted Everything else was scrapped; so was copper metallurgy. These traditional production and process methods are no longer suitable for the requirements of the times. They not only cause environmental pollution, but also cause waste of resources. A large amount of heat energy is wasted in vain, resulting in high production costs. ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device for slag-free production by iron, aluminum, titanium reduction molten salt method, which can completely solve the problem that the latent heat of high-temperature molten slag in the prior art cannot be utilized or cannot be produced. The world-wide problems of complete utilization and inability to extract its own valuable elements, as well as problems such as waste residue pollution, resource waste, and low production capacity, can achieve low-cost and high-efficiency conversion of harmful substances into effective resources, and truly realize solid pollution in the entire production process Zero discharge of material, zero discharge of liquid pollution and standard discharge of gas, green and environmental protection

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