Method for continuously producing titanium sponge

A technology of sponge titanium and titanium alloy, applied in the field of non-ferrous metal smelting, can solve the problems of low Ti absorption efficiency, low equipment utilization rate, unindustrialization, etc., and achieves low investment in technological transformation, high equipment utilization rate and short production cycle Effect

Inactive Publication Date: 2017-06-13
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) The 20G, 1Cr18Ni9Ti material reaction vessel should be infiltrated with titanium before use to prevent it from contaminating the sponge titanium; it should be preheated and tested for air tightness before use;

[0032] 2) Add metal magnesium and metal zinc with a total weight of 10 tons into the airtight qualified reaction vessel according to the weight ratio of 13:4, and heat up to 800°C;

[0033] 3) Add TiCl to the reduction tank at a material rate of 200kg / h 4 , and control the pressure at a positive pressure of 5 to 25KPa; when the added amount reaches 1000kg, use a vacuum ladle to discharge 500kg and 1000kg of titanium alloy and magnesium chloride respectively; and add 380kg of 800℃ liquid magnesium and 600℃ metal Zinc 120kg;

[0034] 4) Carry out the airtightness test on the distillation equipment, and its airtightness should meet the leakage rate of less than 0.27Pa / min when the ultimate vacuum degree is 10Pa; after the distillation equipment is heated to 960...

Embodiment 2

[0038] 1) The 20G, 1Cr18Ni9Ti material reaction vessel should be infiltrated with titanium before use to prevent it from contaminating the sponge titanium; it should be preheated and tested for air tightness before use;

[0039] 2) Add metal magnesium and metal tin with a total weight of 10 tons into the airtight qualified reaction vessel according to the weight ratio of 13:4, and heat up to 800°C;

[0040] 3) Add TiCl to the reduction tank at a material rate of 200kg / h 4 , and control the pressure at a positive pressure of 5 to 25KPa; when the added amount reaches 1000kg, use a vacuum ladle to discharge 500kg and 1000kg of titanium alloy and magnesium chloride respectively; and add 380kg of 800℃ liquid magnesium and 600℃ metal Tin 120kg;

[0041] 4) Carry out the airtightness test on the distillation equipment, and its airtightness should meet the leakage rate of less than 0.27Pa / min when the ultimate vacuum degree is 10Pa; after the distillation equipment is heated to 960-1...

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PUM

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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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12C22B5/04
CPCC22B34/1272C22B5/04
Inventor 盛卓李开华苗庆东李亮朱福兴马尚润
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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