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Smelting separation furnace lining material and preparation method thereof

A furnace lining material and melting furnace technology, applied in the field of melting furnace lining material and its preparation, can solve the problems of fast corrosion rate of working lining, etc., and achieve good oxidation resistance, strong erosion ability, and good thermal shock stability Effect

Inactive Publication Date: 2014-08-27
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the melting furnace was put into operation, there has always been a problem of excessive corrosion of the working lining, especially at the slag line, behind the three-phase electrodes, as well as at the taphole and slag outlet.

Method used

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  • Smelting separation furnace lining material and preparation method thereof
  • Smelting separation furnace lining material and preparation method thereof
  • Smelting separation furnace lining material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A melting furnace lining material and a preparation method thereof. The raw material and content thereof of described melting furnace lining material are:

[0033]

[0034] The preparation method of the melting furnace lining material is as follows: batching according to the above raw materials and their contents; first mixing magnesia particles and silicon carbide particles for 3 to 5 minutes, adding phenolic resin and mixing for 4 to 7 minutes, then adding mixed powder, mixing Refining for 12-18 minutes, forming, and then drying at 180-220°C for 24 hours, the melting furnace lining material is obtained.

[0035] The mixed powder is Ti(C,N)-SiC-C composite powder, magnesia fine powder, silicon carbide fine powder, flake graphite fine powder, carbon black, α-Al 2 o 3 Micropowder, asphalt powder, Si powder and B 4 C powder is mixed, and the mixing time is 3 to 5 minutes.

[0036]The melting furnace lining material prepared in this example 1 has a bulk density of 2...

Embodiment 2

[0038] A melting furnace lining material and a preparation method thereof. The raw material and content thereof of described melting furnace lining material are:

[0039]

[0040] The preparation method of the melting furnace lining material is as follows: batching according to the above raw materials and their contents; first mixing magnesia particles and silicon carbide particles for 3 to 5 minutes, adding phenolic resin and mixing for 4 to 7 minutes, then adding mixed powder, mixing Refining for 12-18 minutes, forming, and then drying at 180-220°C for 24 hours, the melting furnace lining material is obtained.

[0041] The mixed powder is Ti(C,N)-SiC-C composite powder, magnesia fine powder, silicon carbide fine powder, flake graphite fine powder, carbon black, α-Al 2 o 3 Micropowder, asphalt powder, Si powder and B 4 C powder is mixed, and the mixing time is 3 to 5 minutes.

[0042] The melting furnace lining material prepared in this embodiment 2 has a bulk density ...

Embodiment 3

[0044] A melting furnace lining material and a preparation method thereof. The raw material and content thereof of described melting furnace lining material are:

[0045]

[0046]

[0047] The preparation method of the melting furnace lining material is as follows: batching according to the above raw materials and their contents; first mixing magnesia particles and silicon carbide particles for 3 to 5 minutes, adding phenolic resin and mixing for 4 to 7 minutes, then adding mixed powder, mixing Refining for 12-18 minutes, forming, and then drying at 180-220°C for 24 hours, the melting furnace lining material is obtained.

[0048] The mixed powder is Ti(C,N)-SiC-C composite powder, magnesia fine powder, silicon carbide fine powder, flake graphite fine powder, carbon black, α-Al 2 o 3 Micropowder, asphalt powder, Si powder and B 4 C powder is mixed, and the mixing time is 3 to 5 minutes.

[0049] The bulk density of the melting furnace lining material prepared in Examp...

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Abstract

The invention relates to a smelting separation furnace lining material and a preparation method thereof. According to the technical scheme, the preparation method of the smelting separation furnace lining material comprises the following steps: mixing 48-60wt% of magnesite particles and 10-22wt% of silicon carbide particles, adding 3-4wt% of phenolic resin, mixing, then adding mixed powder, mixing, moulding, and then drying for 24 hours at the temperature of 180-220 DEG C, so that the melting separation furnace lining material is obtained; the mixed powder is obtained by mixing 10-15wt% of Ti(C,N)-SiC-C composite powder, 4-7wt% of magnesite fine powder, 1-3wt% of silicon carbide fine powder, 2-3wt% of crystalline flake graphite fine powder, 0.5-1wt% of carbon black, 1-3wt% of alpha-Al2O3 micro powder, 0.5-1.5wt% of asphalt powder, 2-4wt% of Si powder and 0.5-1wt% of B4C powder. The smelting separation furnace lining material has the characteristics of high temperature resistance, washing resistance, strong FeO and TiO2 corrosion resistance, good oxidation resistance and excellent thermal shock performance.

Description

technical field [0001] The invention belongs to the technical field of furnace lining materials. In particular, it relates to a melting furnace lining material and a preparation method thereof. Background technique [0002] my country's Panxi area is rich in vanadium and titanium resources. The existing technology of Panzhihua Iron and Steel mainly adopts the blast furnace-converter process to recover Fe and V, and Ti enters the blast furnace slag. Due to the introduction of slagging agent in the smelting process, TiO in Panzhihua Iron and Steel's blast furnace slag 2 The content is generally about 20wt%, and mainly exists in the form of titanium pyroxene, bayite (titanium-rich diopside), perovskite, magnesite, etc. The comprehensive utilization rate of titanium resources has not been high. In 2010, Panzhihua Iron and Steel built a pilot line for comprehensive utilization of vanadium and titanium resources, using the process flow of direct reduction in rotary hearth furnac...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 桑绍柏任博李亚伟李远兵李淑静
Owner WUHAN UNIV OF SCI & TECH
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