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Production method of titanium carbide slag for preparing titanium tetrachloride

A technology of titanium tetrachloride and its production method, which is applied in the field of metallurgy, can solve problems such as inability to use chlorination process, affect boiling chlorination, and block sieve plate, so as to solve the pressure of environmental protection, promote development, and improve the comprehensive utilization rate of resources Effect

Inactive Publication Date: 2018-04-13
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to realize the preparation of titanium tetrachloride from the slag, only the process of boiling chlorination by adding carbon at high temperature can be adopted. In this process, calcium and magnesium impurities will also be chlorinated, causing the charge to agglomerate, blocking the sieve plate, and affecting the normal progress of boiling chlorination.
The current mainstream chlorination process requires that the content of calcium and magnesium in the raw materials is not higher than 4%, and the content of calcium and magnesium in the slag is more than 30%. Obviously, the conventional chlorination process cannot be used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] TiO in the titanium-containing slag treated in this embodiment 2 content of 15%, MgO content of 6%, CaO content of 28%, SiO 2 The content is 27%, Al 2 o 3 The content is 15%;

[0038]A. Hot-charge the above-mentioned titanium-containing slag into the electric furnace at 1100°C in a molten state, heat up to 1200°C by power transmission, and add a reducing agent (the reducing agent is anthracite, with a particle size not greater than 3mm) by feeding on the furnace top, and continue power transmission The reduction temperature is guaranteed to be 1500°C to 1600°C, and the conversion reaction of titanium dioxide is started;

[0039] B. When the conversion rate of titanium dioxide reaches 85% and the content of titanium carbide in the slag reaches 9.5%, quickly open the slag outlet to discharge the slag. The slag outlet is connected to the slag flushing equipment, and the hot slag is injected by the high pressure water flow (hydraulic pressure) through the slag flushing w...

Embodiment 2

[0043] TiO in the titanium-containing slag treated in this embodiment 2 content of 20%, MgO content of 7%, CaO content of 26%, SiO 2 Content is 25%, Al 2 o 3 The content is 14%;

[0044] A. Hot charge the above-mentioned titanium-containing slag into the electric furnace at 1300°C in a molten state, heat up to 1350°C by power supply, and add a reducing agent (the reducing agent is coke powder, the particle size is not greater than 2mm) by feeding on the furnace top, and continue to send Electricity ensures that the reduction temperature is 1550 ° C ~ 1650 ° C, and the conversion reaction of titanium dioxide begins;

[0045] B. When the conversion rate of titanium dioxide reaches 88% and the content of titanium carbide in the slag reaches more than 13%, quickly open the slag outlet to discharge the slag. The slag outlet is connected to the slag flushing equipment, and the hot slag is injected by the high-pressure water flow (water) through the slag flushing water pipe. The ...

Embodiment 3

[0049] TiO in the titanium-containing slag treated in this embodiment 2 content is 25%, MgO content is 8%, CaO content is 24%, SiO 2 The content is 22%, Al 2 o 3 The content is 13%;

[0050] A. Heat the above-mentioned titanium-containing slag into the electric furnace at 1450°C in a molten state, heat it up to 1500°C by power supply, add a reducing agent (the reducing agent is graphite, the particle size is not greater than 1mm) by blowing and feeding, and continue to power supply The reduction temperature is guaranteed to be 1600°C to 1700°C, and the conversion reaction of titanium dioxide is started;

[0051] B. When the conversion rate of titanium dioxide reaches 95% and the content of titanium carbide in the slag reaches 18%, quickly open the slag outlet to discharge the slag. The slag outlet is connected to the slag flushing equipment, and the hot slag is injected by the high-pressure water flow (water pressure) through the slag flushing water pipe. 0.5MPa), it is qu...

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Abstract

The invention discloses a production method of titanium carbide slag for preparing titanium tetrachloride, and belongs to the field of metallurgy. The technical problem to be solved by the invention is to provide the production method of the titanium carbide slag for preparing the titanium tetrachloride by using a low-temperature chlorination process. The production method of the titanium carbideslag for preparing the titanium tetrachloride comprises the following steps: titanium-contained furnace slag is hot filled in an electric furnace in a molten state for heating to 1200-1500 DEG C; a carbon reducing agent is added for continuous heating to a temperature of not lower than 1500 DEG C; when the titanium dioxide conversion rate is not lower than 85%, and the content of titanium carbidein the furnace slag is 9-19%, a slag outlet of the electric furnace is opened; high-pressure water currents are used for water quenching of liquid-state slag in the slag outlet to obtain granular slag; and the granular slag is dehydrated, dried and crushed to obtain the titanium carbide slag. The titanium-contained furnace slag with high calcium and magnesium contents is used as raw materials forpreparing the titanium carbide slag; and titanium resources and calcium resources in the furnace slag are effectively used for realizing the resourceful utilization of the whole titanium-contained furnace slag.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a production method of titanium carbide slag used for preparing titanium tetrachloride. Background technique [0002] Titanium is an important strategic resource, and titanium products are widely used in various fields. Titanium dioxide is used in coatings, textiles, papermaking, inks, cosmetics and other fields; metal titanium is known as the "third metal" after steel and aluminum, and is widely used in aerospace, energy, weapons, automobiles, medical, Construction and other industries. The advanced titanium industry is an important symbol of comprehensive national strength, and vigorously developing the titanium industry has important strategic significance for consolidating national defense and national economic construction. [0003] Titanium tetrachloride is an intermediate product in the production process of titanium and its compounds, and is an important raw materi...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B34/12C01G23/02
CPCC01G23/022C22B7/04C22B34/1218Y02P10/20
Inventor 赵青娥王唐林王东生黄家旭
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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