Gunning mix and preparation method thereof

A technology of gunning material and binder, applied in the field of refractory materials, can solve the problems of high labor intensity, long construction time, large amount of dust, etc., and achieve the effect of low labor intensity and short construction time

Pending Publication Date: 2020-08-11
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction is integral pouring, which leads to a long construction time of more than 12 hours; the construction requires 7 to 8 laborers to work continuously, which requires a lot of manpower and high labor intensi

Method used

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  • Gunning mix and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] The present invention also provides a method for preparing gunning material, which comprises the following steps:

[0037] (1) Mix the brown corundum and the binder to obtain the first mixture;

[0038] (2) Mix the first mixture, silicon carbide, antioxidant, fiber and water reducing agent to obtain gunning material.

[0039] In the present invention, in the step (1), it is preferable to first pour the brown fused alumina into the sand mixer and mix for 20-40s, and then mix the brown fused alumina and the binder for 20-40s, and the mixing time is further preferably 25 to 35s. It is more preferably 30s.

[0040] In the present invention, the mixing time in the step (2) is preferably 1 to 3 minutes, more preferably 1.5 to 2.5 minutes, and still more preferably 2 minutes.

Example Embodiment

[0042] Example 1

[0043] Take 30 parts of brown corundum with a particle diameter of 0~1mm, 35 parts of brown corundum with a particle diameter of 1~3mm, 17 parts of silicon carbide, 6 parts of alumina powder with a particle diameter of 2~4μm, 3 parts of spherical pitch, 5 parts Cement, 0.1 part of metallic silica fume, 4.5 part of zirconium silica fume, 0.05 part of polypropylene fiber, 0.1 part of polycarboxylic acid water reducing agent. Pour the brown corundum into the sand mixer and mix for 30s, then add alumina powder, spherical asphalt and cement to mix for 30s, and finally put the silicon carbide, metal silicon powder, zirconium silica fume, polypropylene fiber and water reducing agent into the mixer Mix it for 2 minutes, mix well and pack it into a bag.

Example Embodiment

[0044] Example 2

[0045] Take 27 parts of brown corundum with a particle size of 0~1mm, 38 parts of brown corundum with a particle size of 1~3mm, 18 parts of silicon carbide, 5 parts of alumina powder with a particle size of 2~4μm, 3 parts of spherical pitch, 5 parts Cement, 0.1 part of metallic silica fume, 4 parts of zirconium silica fume, 0.05 part of polypropylene fiber, 0.1 part of polycarboxylic acid water reducing agent. Pour the brown corundum into the sand mixer and mix for 30s, then add alumina powder, spherical asphalt and cement to mix for 30s, and finally put the silicon carbide, metal silicon powder, zirconium silica fume, polypropylene fiber and water reducing agent into the mixer Mix it for 2 minutes, mix well and pack it into a bag.

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Abstract

The invention relates to the technical field of refractory materials, in particular to a gunning mix and a preparation method thereof. The gunning mix comprises the following components in parts by mass: 60-65 parts of brown fused alumina, 13-16 parts of silicon carbide, 13-15 parts of a binding agent, 5-6 parts of an antioxidant, 0.05-0.1 parts of fibers and 0.05-0.15 parts of a water reducing agent. The gunning mix developed by the invention is used under the condition of an iron runner and a hot runner, is free of baking, cracking and stripping, and is resistant to erosion of molten iron and iron slag. The gunning mix is short in construction time, low in labor intensity of workers, free of dust and peculiar smell during construction and significant to environmental protection, synergyand the like in the steel industry.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a gunning material and a preparation method thereof. Background technique [0002] With the continuous development of metallurgical technology, the effective volume and pressure of boilers and other thermal equipment continue to increase, resulting in the continuous increase of tapping temperature and flow rate, increasing the load of tapping channel system, and increasing the erosion of tapping channel refractory materials In addition, the repairing of the iron ditch takes a long time, is intensive and produces a lot of smoke and dust, which is contrary to the development theory of energy conservation and environmental protection. So there is an urgent need for a new gunning material to increase the service life of equipment, reduce construction load, and be environmentally friendly. [0003] At present, the refractory material used in most domestic iron troughs is...

Claims

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Application Information

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IPC IPC(8): C04B35/106C04B35/626
CPCC04B35/106C04B35/62605C04B2235/3418C04B2235/3826C04B2235/428C04B2235/5212C04B2235/5427C04B2235/5436C04B2235/77C04B2235/96C04B2235/9607C04B2235/9615C04B2235/9669C04B2235/9676
Inventor 金秀明滕国强张晓波王佳宁丁海瑞杨少康任林
Owner 北京利尔高温材料股份有限公司
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