Double-magnesium chloride pipe reactor for production of sponge titanium and production method of sponge titanium

Abstract

The invention relates to the field of production of nonferrous metallurgy sponge titanium, in particular to a double-magnesium chloride pipe reactor for production of the sponge titanium and a production method of the sponge titanium. The technical problem to be solved by the invention is to provide the double-magnesium chloride pipe reactor for production of the sponge titanium with integrated joint of reduction and distillation production. The invention further provides the production method of the sponge titanium with the integrated joint of reduction and distillation production. The double-magnesium chloride pipe reactor for production of the sponge titanium comprises a tank body (8) and a magnesium chloride main discharge pipeline (7), wherein a magnesium chloride auxiliary discharge pipeline (3) is further arranged on the tank body (8). The production method of the sponge titanium is as follows: discharging liquid magnesium chloride in the last time from the auxiliary discharge pipeline of the hot-end reactor during the magnesium reduction stage, and discharging other liquid magnesium chloride from the main discharge pipeline of the hot-end reactor. The reactor and the production method can shorten the single-furnace production cycle, improve the quality of the produced sponge titanium, greatly reduce the production cost and have broad application prospects.

Description

technical field [0001] The invention relates to the field of nonferrous metallurgy sponge titanium production, in particular to a double magnesium chloride tube reactor for sponge titanium production and a production method of sponge titanium. Background technique [0002] The reaction equation of sponge titanium is: TiCl 4 +2Mg=Ti+2MgCl 2 , its production process is mainly divided into two stages, namely the magnesium reduction stage (to generate titanium and magnesium chloride), and the distillation stage (to remove impurities such as magnesium and magnesium chloride remaining in the sponge titanium). [0003] At present, the production of titanium sponge in China is mainly in two modes: one is produced by series equipment; the other is produced by parallel equipment. The hot-end reactor produced by parallel equipment (that is, the reactor for reduction production, referred to as the hot end) currently has only one magnesium chloride discharge pipe, and the design positi...

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Problems solved by technology

[0017] 1. Waste of time, the production uses a single magnesium chloride tube reactor, and the time from reduction to distillation production, under normal circumstances, takes 10 to 14 hours, and the production cycle of a single furnace is extended

[0018] 2. Waste of energy, because there are many intermediate links in the production process of reduction to distillation, the delay time is long, and the operation must be cut off, thus causing the temperature of the furnace to drop

[0020] 4. High-temperature valves are prone to air leakage. When magnesium chloride in a high-temperature state is evacuated, the titanium sponge has been exposed. During this period, the product is easily nitrided and oxidized by air. Even if a large amount of argon is used for protection, due to It also contains trace amounts of impurity gases such as oxygen and nitrogen, which will also reduce the quality of the product

[0021] 5. At present, the method of producing sponge titanium with parallel equipment has not yet realized the integration of reduction and distillation production in a certain sense, that is, after the reduction production is completed, the assembly of distillation equipment is carried out to continue production. In fact, it is still in the semi-joint production state

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