Method for smelting titanium carbide slag with low carbon

A titanium carbide and carbonaceous technology, applied in the chemical industry, can solve the problems of large consumption of carbonaceous materials, high free carbon content in titanium carbide slag, and no free carbon content in titanium carbide slag, and achieve the effect of reducing free carbon content.

Active Publication Date: 2022-07-19
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The high-temperature carbonization smelting process consumes a large amount of carbonaceous materials and emits a large amount of CO 2 , the content of free carbon in the smelted titanium carbide slag is high, which is not conducive to the process control of the next step
The existing literature does not provide an effective method for high-temperature carbonization of blast furnace slag and low-carbon smelting and reduction of free carbon content in titanium carbide slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, for 25.5MVA electric furnace smelting, the specific embodiment of this method is as follows:

[0020] (1) After the slagging of the electric furnace is completed, operate the three-phase electrode to descend until the end of the electrode contacts the residue surface in the furnace, and record the initial positions of the A, B, and C three-phase electrodes as 1520mm, 1614mm and 1276mm, respectively.

[0021] (2) After the recording of the initial position of the electrode is completed, a carbonaceous reducing agent is added to the furnace, and the added amount accounts for 30% of the total amount of the reducing agent to be added in the next furnace.

[0022] (3) After adding the carbonaceous reducing agent, add 61t of molten high titanium type blast furnace slag into the furnace.

[0023] (4) After the slag loading is completed, lower the electrode and smelt with electricity, gradually lower the electrode position, and the three phases of A, B and C drop ...

Embodiment 2

[0029] Embodiment 2, for 25.5MVA electric furnace smelting, the embodiment of this method is as follows:

[0030] (1) After the slagging of the electric furnace is completed, operate the three-phase electrode to descend until the end of the electrode contacts the residue surface in the furnace, and record the initial positions of the A, B, and C three-phase electrodes as 1348mm, 1425mm and 1546mm, respectively.

[0031] (2) After the recording of the initial position of the electrode is completed, a carbonaceous reducing agent is added to the furnace, and the added amount accounts for 38% of the total amount of the reducing agent to be added in the next furnace.

[0032] (3) After adding the carbonaceous reducing agent, add 45t of molten high titanium type blast furnace slag into the furnace.

[0033] (4) After the slag loading is completed, the electrode is lowered and smelted with electricity, and the electrode position is gradually lowered, and the three phases of A, B and ...

Embodiment 3

[0039] Embodiment 3, for 25.5MVA electric furnace smelting, the embodiment of this method is as follows:

[0040] (1) After the slagging of the electric furnace is completed, operate the three-phase electrode to descend to the point where the electrode end contacts the residue surface in the furnace, and record the initial positions of the A, B, and C three-phase electrodes as 1621mm, 1378mm, and 1556mm, respectively.

[0041] (2) After the recording of the initial position of the electrode is completed, a carbonaceous reducing agent is added to the furnace, and the added amount accounts for 20% of the total amount of the reducing agent to be added in the next furnace.

[0042] (3) After adding the carbonaceous reducing agent, add 55t of molten high titanium type blast furnace slag into the furnace.

[0043] (4) After the slag loading is completed, the electrode is lowered and smelted with electricity, and the electrode position is gradually lowered, and the three phases of A,...

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PUM

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Abstract

The invention relates to the technical field of chemical industry, in particular to titanium slag smelting; the technical problem to be solved by the invention is to provide a smelting method capable of reducing the free carbon content of titanium carbide slag. A method for smelting titanium carbide slag with low carbon, comprising the following steps: A. After the slag removal of the electric furnace is completed, operate the three-phase electrode to descend to the residue surface in the furnace, and record the initial position of the three-phase electrode; B. Add a carbonaceous reducing agent into the furnace; C. Add molten high titanium type blast furnace slag into the furnace, and adjust the slag loading amount according to the amount of slag accumulated in the furnace; D. Lower the electrode and smelt with electricity, and gradually lower the electrode position to the initial position obtained in step A within ±200mm; E. Heating and smelting until the secondary current reaches the rated current, add a carbonaceous reducing agent to the furnace, adjust the feeding speed, and keep the secondary current stable; F. After the feeding is completed, gradually adjust the power transmission gear, monitor the CO content of the flue gas, and start Slag discharge; G. After the slag discharge, the slag is sampled, and the TiC content and free carbon content in the slag are analyzed.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to the smelting of titanium slag. Background technique [0002] The high-temperature carbonization smelting process consumes a large amount of carbonaceous materials and emits a large amount of CO 2 , the free carbon content in the smelted titanium carbide slag is high, which is not conducive to the process control of the next step. The existing literature does not provide an effective method for high temperature carbonization and low carbon smelting of blast furnace slag and reducing the free carbon content of titanium carbide slag. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a smelting method capable of reducing the free carbon content of titanium carbide slag. [0004] The technical scheme adopted by the present invention to solve the technical problem is: a method for smelting titanium carbide slag wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/54C21B3/06
CPCC21C5/54C21B3/06C21C5/5211Y02W30/50
Inventor 黄德胜郭伟龙飞虎郭文明
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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