Refractory castable for blast furnace tapping trench and preparation method thereof
A technology for refractory castables and blast furnace tapping, which is applied in the field of preparation of refractory castables for blast furnace tapping trenches, can solve the problems of long construction period, large energy consumption, short service life, etc. Strength, effect of increasing sinterability
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[0039] Example 1:
[0040] First, premix fused white corundum powder, silicon carbide powder, silicon micropowder, calcined alumina powder, pure calcium aluminate cement and metal silicon powder premix A; spherical pitch, high-efficiency explosion-proof agent and high-efficiency dispersant premix B , The Shanxi high-quality high-alumina bauxite and fused brown corundum with two particle sizes are pre-made into coarse aggregate C in a mixer and mixed evenly, and A, B and C are packaged separately. When preparing castables, add premix A and premix B to material C and add them to a forced mixer for dry mixing, add superplasticizer during mixing, stir evenly, and then put them into a large bag to make a dry refractory castable; Pour the dry ingredients into the mixer, mix with tap water at room temperature while stirring, and mix them evenly, then they can be poured into shape, and then they can be put into use after curing, demoulding and quick baking.
[0041] The long-life and envi...
Example Embodiment
[0056] Example 2:
[0057] First, premix fused white corundum powder, silicon carbide powder, silicon micropowder, calcined alumina powder, pure calcium aluminate cement and metal silicon powder premix A; spherical pitch, high-efficiency explosion-proof agent and high-efficiency dispersant premix B , The Shanxi high-quality high-alumina bauxite and fused brown corundum with two particle sizes are pre-made into coarse aggregate C in a mixer and mixed evenly, and A, B and C are packaged separately. When preparing castables, add premix A and premix B to material C and add them to a forced mixer for dry mixing, add superplasticizer during mixing, stir evenly, and then put them into a large bag to make a dry refractory castable; Pour the dry ingredients into the mixer, mix with tap water at room temperature while stirring, and mix them evenly, then they can be poured into shape, and then they can be put into use after curing, demoulding and quick baking.
[0058] The long-life and envi...
Example Embodiment
[0073] Example 3:
[0074] First, premix fused white corundum powder, silicon carbide powder, silicon micropowder, calcined alumina powder, pure calcium aluminate cement and metal silicon powder premix A; spherical pitch, high-efficiency explosion-proof agent and high-efficiency dispersant premix B , The Shanxi high-quality high-alumina bauxite and fused brown corundum with two particle sizes are pre-made into coarse aggregate C in a mixer and mixed evenly, and A, B and C are packaged separately. When preparing castables, add premix A and premix B to material C and add them to a forced mixer for dry mixing, add superplasticizer during mixing, stir evenly, and then put them into a large bag to make a dry refractory castable; Pour the dry ingredients into the mixer, mix with tap water at room temperature while stirring, and mix them evenly, then they can be poured into shape, and then they can be put into use after curing, demoulding and quick baking.
[0075] The long-life and envi...
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