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Method for enriching titanium carbide in carbide slag

A technology of titanium carbide in slag and enrichment of titanium carbide, applied in the field of metallurgy and chemical industry, can solve the problems of low chlorination efficiency and low grade of titanium carbide, and achieve the effects of improving grade, increasing contact opportunities and improving chlorination efficiency.

Active Publication Date: 2015-12-30
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

[0007] The purpose of the present invention is to provide a method for enriching titanium carbide in carbide slag, so as to solve the problem of low chlorination efficiency due to the low grade of titanium carbide obtained in the existing industrialization process of titanium extraction from blast furnace slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] When the titanium-containing blast furnace slag reaches the end of smelting, open the furnace mouth to discharge the slag, and use the slag tray to receive the slag. The amount of slag is 13.4t, accounting for about 2 / 3 of the total volume of the slag tray; close the switch, and the turntable on the slag discharge platform rotates to drive the slag tray Rotate, the rotation speed is 16r / min, and the rotation time is 8min; when the surface of the slag liquid is solidified, spray water on the surface of the slag liquid to cool, and the cooling time is 9h; Collect 8.3t of carbonized slag in about 2 / 3 of the upper layer of the slag pan, crush it to 20-40mm by jaw crusher, react it with industrial waste acid, filter and dry to obtain carbonized slag with a TiC content of 24.2% Finished product: more than 1 / 3 of the bottom part of the slag pan is collected to 5.1 tons of carbide slag, and the measured TiC content is 37.9%.

Embodiment 2

[0023] When the titanium-containing blast furnace slag reaches the end of smelting, open the furnace mouth to discharge the slag, and use the slag tray to receive the slag. The amount of slag is 14.7t, accounting for about 2 / 3 of the total volume of the slag tray; close the switch, and the turntable on the slag discharge platform rotates to drive the slag tray Rotate, the rotation speed is 10r / min, and the rotation time is 11min; when the surface of the slag liquid is solidified, spray water on the surface of the slag liquid to cool, and the cooling time is 10h; , 9.1t of carbonized slag collected in about 2 / 3 of the upper layer of the slag pan was crushed by a jaw crusher to 20-40 mm, reacted with industrial waste acid, filtered and dried to obtain 23.7% TiC Finished carbide slag: 6.6 tons of finished carbide slag collected at more than 1 / 3 of the bottom of the slag pan, and the measured TiC content is 33.4%.

Embodiment 3

[0025] When the titanium-containing blast furnace slag reaches the end of smelting, open the furnace port to discharge the slag, and use the slag tray to receive the slag. The slag volume is 16.0t, accounting for about 2 / 3 of the total volume of the slag tray; close the switch, and the turntable on the slag discharge platform rotates to drive the slag tray Rotate, the rotation speed is 7r / min, and the rotation time is 15min; when the surface of the slag liquid is solidified, spray water on the surface of the slag liquid to cool, and the cooling time is 12h; , 9.4t of carbonized slag collected in about 2 / 3 of the upper layer of the slag pan was crushed by a jaw crusher to 20-40 mm, reacted with industrial waste acid, filtered and dried to obtain carbonized slag with a TiC content of 21.6%. Finished slag: more than 1 / 3 of the bottom of the slag pan is collected to 6.6 tons of carbide slag, and the measured TiC content is 38.3%.

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Abstract

The invention discloses a method for enriching titanium carbide in carbide slag, relates to the technical field of metallurgical chemical, and solves the problem that the chlorination rate is low due to the fact that the grade of titanium carbide in high blast furnace slag titanium extraction industrialization process is low. The adopted technical scheme is that a blast furnace is opened for deslagging after titanium-bearing blast furnace slag reaches a smelting finish point, a slag pan is used for receiving slag and is rotated after the slag is received so that TiC particles can sink, gather and grow constantly, after the titanium-bearing blast furnace slag is cooled, the titanium-bearing blast furnace slag on the upper layer in the slag pan is reacted with acid after smashed, most CaO, MgO and Al2O3 are removed, and a finished product rich in titanium carbide is obtained after filtering and drying; the titanium-bearing blast furnace slag on the lower layer in the slag pan is directly taken as a finished product rich in titanium carbide. With the method for enriching the titanium carbide in the carbide slag, TiC grade in the titanium-bearing carbide slag is improved, the contact opportunity of titanium carbide and chlorine is increased during lower temperature chlorination, generation of chlorination reaction can be promoted, and the chlorination efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a method for enriching titanium carbide in carbide slag in the high-temperature carbonization process of titanium extraction from blast furnace slag. Background technique [0002] The Panzhihua area is rich in titanium resources, accounting for more than 90% of the total titanium resources in my country. Panzhihua Iron and Steel adopts the main process route of selecting iron first and then titanium. Titanium resources finally enter blast furnace slag through the traditional blast furnace ironmaking process. TiO 2 The content is 20-24%. [0003] In order to extract titanium from blast furnace slag, many domestic research institutions have carried out relevant research. At present, high-titanium type blast furnace slag "high-temperature carbonization-carbide slag low-temperature chlorination to produce TiCl 4 "The process is one of the most promising te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/30B09B3/00
Inventor 王东生张继东赵青娥程晓哲
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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