High-temperature furnace with excellent heat insulation function and its cover

Abstract

The invention provides a furnace cover. The furnace cover comprises a heat insulation body and a connecting piece used for being fixedly connected with a furnace body, and the heat insulation body is fixedly connected with the connecting piece; the heat insulation body comprises a barrel-shaped inner layer and a barrel-shaped outer layer, a plurality of layers of cone heat screens are arranged between the barrel-shaped inner layer and the barrel-shaped outer layer, the upper ends of the cone heat screens and the barrel-shaped inner layer are fixed, and the lower ends of the cone heat screens and the barrel-shaped outer layer are fixed. According to the furnace cover, heat radiation generated in a heating furnace is continuously emitted through the cone heat screens in the heat insulation body, and heat radiation in a high temperature furnace which has an excellent heat insulation function and is provided with the furnace cover is difficult to emit to the furnace cover, so that heat loss is reduced, and energy conservation and consumption reduction are achieved; the temperature of the furnace cover is kept within a low range, safety of daily operation maintenance is improved, potential safety hazards are eliminated, and meanwhile service life of the whole equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of metal preparation, in particular to a metal chloride, especially chlorides of Ti, Zr, Hf, V, W, Cr, and Ta as raw materials, which is produced by molten salt electrolysis and has excellent heat insulation Functional high temperature furnace and its furnace cover. Background technique [0002] The use of electrodeposition technology to extract metals and non-metals is a relatively common material extraction technology. In the past, aqueous solution electrodeposition was preferred. However, the biggest limitation of aqueous solution electrodeposition is that the electrochemical window of aqueous electrolyte is small, and only a few metals can be used. Electrodeposited from aqueous solution, such as: Mn, Ni, Zn, etc. However, the production of aluminum, magnesium, lithium, rare earth, refractory metal titanium, vanadium, molybdenum and some non-metals cannot be effectively extracted by aqueous solution elec...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the defect in the design of the furnace cover of the device for producing metal by molten salt electrolysis in the prior art, which causes the heat generated by the heating furnace to be dissipated through the furnace cover, increasing the production energy consumption, Therefore, the temperature of the furnace cover is too high, and there are certain potential safety hazards in daily maintenance. The present invention provides a high-temperature furnace with excellent heat insulation function and its cover. The structure of the furnace cover is improved to minimize the emission of heat. solve the above problems

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