Environment-friendly type carbonaceous press material for maintaining blast furnace hearth
An environment-friendly, blast furnace technology, applied in the field of iron-making refractory materials, can solve environmental pollution and other problems, and achieve the effects of ensuring thermal conductivity, improving density, and reducing volatile matter
Active Publication Date: 2015-04-01
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
The organic binder will inevitably bring environmental pollution
Method used
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Embodiment
[0036] The above-mentioned various dry raw materials are weighed and batched according to the stated ratio, mixed evenly, then added with a liquid binder and stirred evenly, and can be applied at the production site after being sealed and packaged.
[0037]
Example 1
Example 2
Example 3
15
25
35
Flake graphite<0.074mm
32
26
20
11
8
4
Quartz<0.154mm
15
10
5
Boron carbide <0.044mm
3.0
2.0
1.0
Environmental modified tar 24~35
24
29
35
[0038] To analyze the performance of the pressed material, the material test method refers to the corresponding national standard or industry standard for refractory materials.
[0039] The measured value of the technical index of the press-feed material
[0040]
[0041] The environmentally friendly carbonaceous press-f...
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Abstract
The invention provides an environment-friendly type carbonaceous press material for a maintaining blast furnace hearth. The environment-friendly type carbonaceous press material comprises the following components by weight: 15-35% of electrode graphite, 20-32% of crystalline flake graphite, 4-11% of silicon carbide, 5-15% of quartz sand, 1.0-3.0% of boron carbide, and 24-35% of environmental protection modified tar, wherein the sum of the components is 100%. The various said dry raw materials, in the proportions, can be used in a production field after weighted, burdened, uniformly mixed, uniformly stirred with a liquid binder and sealedly packaged. The carbonaceous press material of the invention has advantages of good fluidity and fallibility, high density and intensity, high thermal conductivity, good anti-aggressivity to melt molten iron and slag, high temperature air-flow flushing resistance, and good anti oxidizability, and is especially in favor of raising a blast furnace life and in favor of safety production. The carbonaceous press material contains less poisonous and harmful substances like benzopyrene, and is in favor of environmental protection.
Description
technical field [0001] The invention relates to an environment-friendly carbonaceous press-in material for blast furnace maintenance, belonging to the technical field of ironmaking refractory materials. Background technique [0002] During the production process of the blast furnace, especially in the middle and late stages of the furnace operation, the lining of the furnace body will be damaged to varying degrees, and the furnace shell will be red hot, the cooling wall will be burned, and gas leakage will occur. Therefore, the timely maintenance of the furnace body in the middle and late stages of the furnace operation is an important guarantee for the long-life production of the blast furnace, and scientific furnace body maintenance technology is one of the main means to prolong the life of the blast furnace. As a technology to prolong the service life of blast furnaces, furnace shaft press-in maintenance has been widely used by domestic and foreign enterprises, and it has...
Claims
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IPC IPC(8): C04B35/66
Inventor 夏欣鹏甘菲芳陶卫忠朱锦明居勤章
Owner BAOSHAN IRON & STEEL CO LTD