Method for continuously producing titanium sponge

Abstract

The invention belongs to the technical field of non-ferrous metal metallurgy and relates to a method for continuously producing titanium sponge. The method comprises adding molten magnesium and other metal into a reaction container, adding TiCl4 into the metals, carrying out a reaction process to obtain a liquid titanium-containing alloy, periodically extracting the liquid titanium-containing alloy and MgCl2, periodically supplying liquid magnesium and other alloy, and carrying out vacuum distillation separation on the extracted liquid titanium-containing alloy to obtain metal titanium, wherein other metal is one of bismuth, tin and zinc. The method is free of production stopping, realizes continuous production of titanium sponge and has the advantages of low energy consumption, short production cycle and high utilization rate of equipment.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to a method for continuously producing sponge titanium. Background technique [0002] At present, the magnesium thermal method is the only method for industrially preparing sponge titanium, which can be divided into TiCl 4 Preparation, Mg preparation, magnesium reduction-vacuum distillation, crushing and packaging four major processes. Magnesium thermal method to produce sponge titanium is to continuously add TiCl to the reaction vessel filled with excess molten magnesium. 4 A reaction occurs to generate sponge titanium, and the generated metal titanium is deposited on the bottom of the reaction vessel, and the generated MgCl 2 It is regularly discharged by means of upper row or lower row, and finally, vacuum distillation is used to separate and purify the reduced sponge titanium. In the process of preparing sponge titanium by magnesothermic method, ...

AI Technical Summary

Problems solved by technology

Since the titanium sponge deposited at the bottom of the reaction vessel in the reduction stage is solid and easily absorbs oxygen and nitrogen, the reduction process of the traditional magnesium thermal method for titanium sponge preparation has discontinuous, high energy consumption, long production cycle, and low equipment utilization. features

[0003] At present, in order to find a method for preparing titanium metal with low cost and simple process, new titanium metal preparation processes such as FFC, Os, and PRP have appeared one after another, but due to reasons such as high preparation costs and poor product quality, industrialization has not been realized.

Among them, patent CN101157990A discloses a method for obtaining titanium metal by reducing titanium-containing materials. It proposes to mix the titanium-containing materials with a carbon reducing agent, then add ferrosilicon, metal tin or metal copper, and under the protection of an inert gas under normal pressure of 800 Reaction at ~1000°C, and finally vacuum distillation to obtain metal titanium. In this method, the absorption efficiency of tin and copper on the Ti-Si-Fe alloy obtained by reduction is low, and the finally obtained metal titanium is easily absorbed by carbon-containing Contaminated by reducing agent