SiC/C homogenized material, stemming and preparation method thereof

A technology of quality uniformity and gun clay, which is applied in the field of gun clay and its preparation, SiC/C homogenized material, can solve the problems of poor stability of gun clay, and achieve the effect of improving poor stability, good corrosion resistance and oxidation resistance

Inactive Publication Date: 2020-06-05
巩义市芙豪冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The application provides a SiC / C quality homogenized material, gun clay and its preparation method, which improves the problem of poor stability of the existing gun clay, and the gun clay has better anti-corrosion and anti-oxidation properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The present application also provides a method for preparing SiC / C homogenized material, which includes: roasting the raw material at a temperature of 600-1500°C.

[0030] Exemplarily, the firing temperature is 800-1200°C, or 900-1100°C. The firing temperature is for example but not limited to any one of 600°C, 650°C, 700°C, 750°C, 800°C, 900°C, 950°C, 1000°C, 1100°C and 1200°C or a range between them.

[0031] In a possible implementation, before roasting the raw materials, the raw materials are subjected to ball milling and homogenization treatment. Exemplarily, the raw materials are firstly mixed, crushed, ball milled, pressed into shape, and then roasted.

[0032] Exemplarily, after the SiC / C homogenized material is prepared, sieving and classifying the SiC / C homogenized material is further included to obtain SiC / C homogenized materials with different particle size ranges.

[0033] The present application also provides a gun clay, and the raw material of the gun c...

Embodiment 1

[0044] The present embodiment provides a kind of SiC / C homogeneous material, it is made by the following steps:

[0045] Mix 30kg of coal gangue, 40kg of waste materials containing silicon carbide, 20kg of coke and 10kg of ferrosilicon industrial waste, crush them, co-grind them in a ball mill, press them into shape, and roast them at a temperature of 800°C to obtain SiC. / C quality homogenizing material.

[0046] Present embodiment also provides a kind of gun clay, and it is made by the following steps:

[0047] Will SiC / C homogenized material fine powder with a particle size of 1-3mm, SiC / C homogenized material particles with a particle size of 3-320 mesh and coal tar are added to the mixer and mixed after heating to 50°C , rolling, and then extruding through a mud extruder to obtain gun mud.

Embodiment 2

[0049] The present embodiment provides a kind of SiC / C homogeneous material, it is made by the following steps:

[0050] Mix 40kg of fly ash, 40kg of waste materials containing silicon carbide, 20kg of coke and 10kg of ferrosilicon industrial waste, crush them, co-grind them in a ball mill, press them into shape, and roast them at a temperature of 1500°C to obtain SiC / C homogeneous material.

[0051] Present embodiment also provides a kind of gun clay, and it is made by the following steps:

[0052] Will SiC / C homogenized material fine powder with a particle size of 0.5-3mm, SiC / C homogenized material particles with a particle size of 3-180 mesh, and resin are added to the mixer, heated to 60°C and mixed. Rolling, and then extruding through a mud extruder to obtain gun mud.

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Abstract

The invention provides a SiC/C homogenized material, stemming and a preparation method thereof, and belongs to the technical field of stemming. Raw materials of the stemming comprise a SiC/C homogenized material. The SiC/C homogenized material is formed by roasting raw materials at the temperature of 600-1500 DEG C, the raw materials comprise aluminum oxide, silicon dioxide, silicon carbide, coke,silicon powder and iron powder, and the SiC/C homogenized material comprises a mullite phase, graphite, silicon carbide whiskers and part of coke. Silicon powder and coke are roasted under the catalytic action of iron powder, silicon carbide whiskers can be easily obtained, the SiC/C homogenized material is more stable in structure, and meanwhile, the erosion resistance and the strength of the homogenized material are improved. After part of coke is graphitized, the oxidation resistance, erosion resistance and mud beating performance of the SiC/C homogenized material are improved. The coke which is not graphitized can keep good air permeability of the stemming.

Description

technical field [0001] The present application relates to the field of blast clay technology, in particular to a SiC / C homogenized material, blast clay and a preparation method thereof. Background technique [0002] Gun clay is a refractory material used to block the taphole of the blast furnace, mainly to block the taphole and protect the furnace wall and hearth. In order to ensure the stability of the tap hole, it is required that the blasthole clay should have good workability, volume stability, sinterability and opening performance, and at the same time, it should have the characteristics of anti-slag, molten iron erosion and erosion, and anti-oxidation. At present, gun clay is generally made of bauxite clinker, corundum raw materials, silicon carbide, silicon nitride, coke powder, bonded clay, etc. as the main raw materials, and is prepared according to the process procedures such as accurate batching→sequential stirring→oiling and rolling. The microstructure and compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622C04B35/565
CPCC04B35/66C04B35/565C04B35/62204C04B2235/422C04B2235/5427C04B2235/5436
Inventor 肖继东
Owner 巩义市芙豪冶金材料有限公司
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