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Titanium dioxide synthetic system

A technology of titanium dioxide and titanium tetrachloride, which is applied in the field of metallurgy, can solve problems such as non-environmental protection, and achieve the effects of improving environmental protection, easy operation, and short preparation cycle

Pending Publication Date: 2019-10-25
CHINA ENFI ENGINEERING CORPORATION
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a titanium dioxide synthesis system to solve the problem that the existing method for preparing titanium dioxide from ilmenite is not environmentally friendly

Method used

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  • Titanium dioxide synthetic system

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Embodiment 1

[0048] use figure 1 The apparatus shown produces titanium dioxide.

[0049] Ilmenite and coke are reduced and smelted according to the mass ratio of 7:1 to obtain titanium-rich slag and iron metal phase. The smelting flue gas is burned by the waste heat boiler to produce steam, and the combustion flue gas is cooled to 170°C and collected by the bag dust collector Dust up to standard discharge. The titanium content in the titanium-rich slag is 93wt%, and the titanium recovery rate is 98%.

[0050] Titanium-rich slag and coke are mixed with chlorine gas at a mass ratio of 3:1 to undergo a chlorination reaction in a fluidized bed reactor. The reaction temperature of the chlorination reaction is 950-1050°C, and the reaction pressure is 110-150KPa. The mixed gas containing titanium tetrachloride produced by the reaction is quenched and rinsed, dedusted, cooled and condensed to obtain a crude titanium tetrachloride liquid product. The yield of the chlorination reaction was 95%. ...

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Abstract

The invention provides a titanium dioxide synthetic system. The titanium dioxide synthetic system comprises a titanic iron ore supply device, a reduction smelting unit, a chlorination unit and an oxidizing unit, the reduction smelting unit is provided with a feeding port and a high titanium slag discharging port, the feeding port communicates with the titanic iron ore supply device, the chlorination unit is provided with a high titanium slag inlet, a chlorine inlet and a titanium tetrachloride discharging port, the high titanium slag inlet communicates with the high titanium slag discharging port through a high titanium slag transport pipeline, the oxidizing reaction unit is provided with a titanium tetrachloride inlet and a titanium dioxide discharging port, and the titanium tetrachlorideinlet communicates with a titanium tetrachloride discharging port through a titanium tetrachloride transport pipeline. According to the titanium dioxide synthetic system, the environmental protectiveperformance of the technology can be greatly improved, and meanwhile the titanium dioxide synthetic system has the advantages that operation is easy, the preparation period is short, and the cost islow.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a titanium dioxide synthesis system. Background technique [0002] my country is rich in titanium resources, except for a small amount of ilmenite placer, mainly ilmenite ore. However, the domestic ilmenite ore has low grade and high impurity content, which cannot directly meet the raw material requirements of chlorination titanium dioxide. It is only suitable for It is used as the raw material of sulfuric acid titanium dioxide. Due to the large amount of "three wastes" that are difficult to treat and pollute the environment in the production process of sulfuric acid titanium dioxide, the global production capacity of sulfuric acid titanium dioxide has shrunk sharply in recent years. Therefore, it is an urgent task for the development of my country's titanium dioxide and titanium materials industry to seek economical, environmentally friendly and reasonable titanium raw material process...

Claims

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Application Information

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IPC IPC(8): C01G23/07C01G23/02C22B34/12
CPCC01G23/07C01G23/022C22B34/1218
Inventor 张志刚杨永亮李少华杜国山徐月和
Owner CHINA ENFI ENGINEERING CORPORATION
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