TiCl4 preparation process and system

A technology of preparation process and mass ratio, applied in the direction of titanium tetrachloride, titanium halide, etc., can solve problems such as difficulty, increased energy consumption, waste of titanium resources, etc., to improve the recovery rate of titanium, improve comprehensive utilization, and reduce chlorination The effect of energy consumption

Pending Publication Date: 2018-05-18
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this process will lead to an increase in energy consumption per unit of product. At the same time, the utilization rate of titanium resources in this process is about 10%, and more than 50% of titanium resources enter the vanadium-titanium magnetite conc

Method used

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  • TiCl4 preparation process and system
  • TiCl4 preparation process and system
  • TiCl4 preparation process and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The TiCl of the embodiment 1 of the present invention 4 The preparation process comprises the following steps:

[0056] Agglomeration: Mix vanadium-titanium magnetite concentrate, binder, and water at a mass ratio of 100:1:7.5 to obtain green pellets, which are dried, preheated, and roasted to obtain oxidized pellets. Among them, vanadium-titanium magnetite concentrate The main components and contents of the ore are shown in Table 1;

[0057] Table 1

[0058] TF

Fe 2 o 3

FeO

CaO

MgO

SiO 2

Al 2 o 3

V 2 o 5

TiO 2

MnO

54.55

54.41

21.22

0.56

3.58

3.98

3.26

0.65

10.50

0.51

[0059] Direct reduction: send the oxidized pellets into the shaft furnace for direct reduction, and obtain vanadium-titanium metallized pellets with a metallization rate of 89.65%. Gas effective gas volume ratio (CO+H 2 ) / (CO+H 2 +N 2 +CO 2 +H 2 O) = 0.8;

[0060] Melting: Feed the vanadium-titaniu...

Embodiment 2

[0068] The TiCl of the embodiment 2 of the present invention 4 The preparation process comprises the following steps:

[0069] Agglomeration: Mix vanadium-titanium magnetite concentrate, binder, and water at a mass ratio of 100:2:9 to obtain green pellets. The green pellets are dried, preheated, and roasted to obtain oxidized pellets. Among them, vanadium-titanium magnetite concentrate The main components and contents of ore are shown in Table 3;

[0070] table 3

[0071] TF

Fe2O3

FeO

V2O5

TiO2

MnO

CaO

MgO

SiO2

Al2O3

59.00

56.57

25.00

0.65

12.25

0.51

0.33

1.89

0.98

1.21

[0072]Direct reduction: send the oxidized pellets into the shaft furnace for direct reduction, and obtain vanadium-titanium metallized pellets with a metallization rate of 83.65%. Gas effective gas volume ratio (CO+H 2 ) / (CO+H 2 +N 2 +CO 2 +H 2 O) = 0.9;

[0073] Melting: Feed the vanadium-titanium metallized pellets a...

Embodiment 3

[0081] The TiCl of the embodiment 3 of the present invention 4 The preparation process comprises the following steps:

[0082] Agglomeration: Mix vanadium-titanium magnetite concentrate, binder, and water at a mass ratio of 100:2:9 to obtain green pellets, which are dried, preheated, and roasted to obtain oxidized pellets.

[0083] Direct reduction: send the oxidized pellets into the shaft furnace for direct reduction, and obtain vanadium-titanium metallized pellets with a metallization rate of 83.65%. Gas effective gas volume ratio (CO+H 2 ) / (CO+H 2 +N 2 +CO 2 +H 2 O) = 0.9;

[0084] Melting: Feed the vanadium-titanium metallized pellets and semi-coke into the melting furnace at a mass ratio of 100:5. The charge is heated to 1700°C in the melting furnace and kept at a constant temperature for 45 minutes to complete the separation of slag and iron to obtain titanium-containing slag.

[0085] Chlorination: The titanium slag after separation of slag and iron is crushed an...

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Abstract

The invention discloses a TiCl4 preparation process. The process comprises the following steps: mixing vanadic titanomagnetite, a binder and water according to a mass ratio of 100:(1-2.5):(6-9) to obtain raw balls, and carrying out drying, preheating and roasting on the raw balls to obtain oxidized pellets; sending the oxidized pellets into gas-based reduction equipment for direct reduction to prepare vanadium-titanium metallized pellets; sending the vanadium-titanium metallized pellets into a melting furnace for melting, and carrying out slag-iron separation to obtain titanium-containing slag; crushing the titanium-containing slag, carrying out grinding to obtain the titanium slag, adding the titanium slag and a carbon raw material into a chlorination reaction furnace containing a moltensalt with a semi-molten state according to the mass ratio of 100:(11-15), introducing chlorine gas into the chlorination reaction furnace after the molten salt is completely melted, and carrying out chlorination reaction to obtain gaseous TiCl4; condensing the gaseous TiCl4 by a condensing device to obtain crude TiCl4; and carrying out refining process on the crude TiCl4 to obtain refined TiCl4. The method can be used to effectively recover titanium resources, improve the recovery rate of the titanium resources, reduce energy consumption and reduce environmental pollution.

Description

technical field [0001] The invention relates to the technical field of chemical metallurgy, in particular to a method of directly reducing vanadium-titanium magnetite concentrate-melting-molten salt chlorination to prepare TiCl 4 process and system. Background technique [0002] The current TiCl in the world 4 The production methods mainly include boiling chlorination method and molten salt chlorination method. The basic principle of the two production methods is that under certain temperature and carbon addition conditions, the TiO in titanium slag 2 Components and Cl 2 The reaction produces TiCl 4 . Boiling chlorination method requires TiO in titanium slag 2 The content is generally more than 90%, which is called artificial rutile; while the molten salt chlorination method generally requires TiO in titanium slag 2 The content reaches more than 85%. The production of artificial rutile requires the use of natural rutile concentrate, TiO 2 The grade is generally above...

Claims

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Application Information

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IPC IPC(8): C01G23/02
CPCC01G23/022
Inventor 邓君薛逊张岚韩志彪范志辉冯鲁兴吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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