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Method for preparing titanium carbide slag by using titanium-containing slag

A titanium slag and titanium carbide technology, applied in the direction of improving process efficiency, can solve problems such as increasing smelting power consumption, low titanium yield, reducing thermal efficiency, etc., to improve technical economy, reduce smelting power consumption, and avoid energy waste. Effect

Inactive Publication Date: 2019-08-09
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

Existing smelting methods often have problems such as unstable reaction or too slow reaction rate, which will prolong the reaction time, reduce thermal efficiency, and increase smelting power consumption; and the inaccurate judgment of the timing of the furnace will cause the content of titanium carbide to fluctuate. Large fluctuations in indicators, low titanium yield and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] TiO in the titanium-containing slag treated in this embodiment 2 When the content is 10%, the titanium-containing slag is hot-loaded into the electric arc furnace, and the temperature is raised by power transmission; when the flue gas temperature reaches 850°C, the reducing agent is added; the CO concentration rises rapidly to 50%, and the CO concentration curve is monitored. By adjusting the input power and reducing agent feeding speed, so that the CO concentration is stable at about 50% during the reaction; when the feeding is completed, when the CO concentration gradually decreases, pay close attention to the CO concentration curve. Under the same input power, the CO concentration continues to drop to 5%, and the slag begins , to end the reaction.

Embodiment 2

[0027] TiO in the titanium-containing slag treated in this embodiment 2 The content is 20%, the titanium-containing slag is put into the electric arc furnace, and the temperature is raised by power transmission; when the temperature of the flue gas reaches 900°C, the reducing agent is added; the CO concentration rises rapidly to 60%, and the CO concentration curve is monitored. By adjusting the input power and reducing agent feeding speed, so that the CO concentration is stable at about 60% during the reaction; after the feeding is completed, when the CO concentration gradually drops, pay close attention to the CO concentration curve. Under the same input power, the CO concentration continues to drop to 10%, and the slag begins , to end the reaction.

Embodiment 3

[0029] TiO in the titanium-containing slag treated in this embodiment 2 The content is 30%, the titanium-containing slag is put into the electric arc furnace, and the temperature is raised by power transmission; when the flue gas temperature reaches 960 ° C, the reducing agent is added; the CO concentration rises rapidly to 70%, and the CO concentration curve is monitored. By adjusting the input power and reducing agent feeding speed, so that the CO concentration during the reaction is stable at about 70%; after the feeding is completed, when the CO concentration gradually decreases, pay close attention to the CO concentration curve. Under the same input power, the CO concentration continues to drop to 5%, and the slag begins , to end the reaction.

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Abstract

The invention relates to the field of titanium-containing slag smelting methods, and particularly relates to a method for preparing titanium carbide slag by using titanium-containing slag which shortens reaction time and reduces smelting power consumption. The method comprises the following steps of, a, adding titanium-containing slag into a submerged arc furnace or an electric arc furnace and increasing the temperature; and when the temperature reaches a set value, adding a carbonaceous reducing agent, and making the carbonaceous reducing agent react with the titanium-containing slag in the furnace; b, taking a flue gas temperature and a CO concentration value in the furnace as a judgment basis of a reaction control, and adjusting an input power and a feeding speed of the reducing agent according to the flue gas temperature and the CO concentration value in the furnace, thus making the CO concentration value the control reaction maintain the optimal stable state; and c, ending the feeding of the reducing agent; and when the CO concentration value gradually falls to the set concentration, starting slag tapping, ending the reaction, and obtaining the titanium carbide slag. Accordingto the method, the reaction time can be shortened, the smelting power consumption can be reduced, and the technical economy of preparing the titanium carbide slag by using the titanium-containing slag is improved; and the method is particularly suitable for the process of preparing the titanium carbide slag by using the titanium-containing slag.

Description

technical field [0001] The invention relates to the field of smelting methods for titanium-containing slag, in particular to a method for preparing titanium carbide slag by using titanium-containing slag. 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, paper, ink, cosmetics and other fields; titanium metal is 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-containing slag contains 10% to 30% TiO 2 If it is not utilized, it will not only pollute the environment, but also cause a serious waste of titanium resources. Converting titanium-conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B34/12
CPCC22B7/001C22B7/04C22B34/1218Y02P10/20
Inventor 赵青娥黄家旭王东生
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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