Corundum micro-pore heat-insulating and fireproof material and preparation method thereof
A refractory material and corundum-based technology, which is applied in the field of corundum-based microporous heat-insulating refractory materials and its preparation, can solve the problems of high labor intensity, high energy consumption, and poor volume stability of the furnace lining, and achieve low labor intensity and low energy consumption. Low, improve the effect of erosion resistance and penetration ability
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Embodiment 1
[0015] A corundum-based microporous heat-insulating refractory material and a preparation method thereof. The raw materials and contents of the corundum-based microporous heat-insulating refractory material are: 40-45wt% corundum particles, 40-45wt% corundum fine powder, 8-10wt% active α-alumina powder, 7-10wt% The ρ-alumina micropowder; the admixture and its content are: 0.1-0.5wt% sodium tripolyphosphate of the above-mentioned raw materials, 0.1-0.5wt% of the above-mentioned raw materials of nano-alumina powder, and 5-10wt% of the above-mentioned raw materials of water.
[0016] The preparation method of this example is: firstly mix the ingredients according to the content of raw materials and admixtures, then mix the raw materials and dispersant to make a mixture, and disperse the nano-alumina powder in water, and disperse it under the condition of ultrasonic vibration for 1 ~5 minutes to prepare a uniform suspension; then add the suspension to the mixture drop by drop, sti...
Embodiment 2
[0020] A corundum-based microporous heat-insulating refractory material and a preparation method thereof. The raw materials and contents of the corundum microporous heat-insulating refractory material are: 45~50wt% corundum particles, 40~45wt% corundum fine powder, 5~8wt% active α-alumina powder, 5~7wt% The ρ-alumina micropowder; the admixture and its content are: 0.1-0.5wt% sodium hexametaphosphate of the above-mentioned raw materials, 0.5-1.0wt% of the above-mentioned raw materials of nano-alumina powder, and 5-10wt% of the above-mentioned raw materials of water.
[0021]The preparation method of this example is: firstly mix the ingredients according to the content of raw materials and admixtures, then mix the raw materials and dispersant to make a mixture, and disperse the nano-alumina powder in water, and disperse it under the condition of ultrasonic vibration for 1 ~5 minutes to prepare a uniform suspension; then add the suspension to the mixture drop by drop, stir evenly...
Embodiment 3
[0025] A corundum-based microporous heat-insulating refractory material and a preparation method thereof. The raw materials and contents of the corundum-based microporous heat-insulating refractory material are: 40-45wt% corundum particles, 40-45wt% corundum fine powder, 8-10wt% active α-alumina fine powder, 5-7wt% The ρ-alumina micropowder; the admixture and its content are: 0.1-0.5wt% polyethylene glycol of the above-mentioned raw materials, 1.0-1.5wt% of the above-mentioned raw materials of nano-alumina powder, and 5-10wt% of the above-mentioned raw materials of water.
[0026] The preparation method of this example is: firstly mix the ingredients according to the content of raw materials and admixtures, then mix the raw materials and dispersant to make a mixture, and disperse the nano-alumina powder in water, and disperse it under the condition of ultrasonic vibration for 1 ~5 minutes to prepare a uniform suspension; then add the suspension to the mixture drop by drop, sti...
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