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Castable for dip pipe of RH furnace and preparation method of castable
The invention discloses a castable for an RH furnace dip pipe. The castable comprises tabular corundum, alpha-Al2O3 micro powder, rho-Al2O3, 96 silica powder, a water reducing agent, explosion-proof fibers and heat-resistant stainless steel fibers. Meanwhile, the invention discloses a preparation method of the castable for the dip pipe of the RH furnace, which comprises the following steps: firstly, adding 0.088 mm fused magnesia fine powder, bimodal alpha-Al2O3 micro powder, unimodal alpha-Al2O3 micro powder, 96 silica powder and a water reducing agent into a conical premixing machine according to the mass percent, and premixing for 30 minutes to obtain premixed powder; adding the tabular corundum aggregate, the explosion-proof fiber and the heat-resistant stainless steel fiber into a mixer according to the mass percentage, mixing for 2 minutes, adding the prepared premixed powder into the mixer, and mixing for 6 minutes, thereby obtaining the anti-explosion anti-explosion heat-resistant corundum composite material. The rho-Al2O3 is used as a corundum spinel castable binding agent for the RH furnace dip pipe, and then the composite alpha-Al2O3 micro powder and the fused magnesite are added, so that the refractoriness under load and the high-temperature strength of the material can be remarkably improved, the slag resistance of the material can be remarkably improved, and the service life of the RH furnace dip pipe is prolonged.
本发明公开了一种RH炉浸渍管用浇注料，包括板状刚玉、α‑Al2O3微粉、ρ‑Al2O3、96硅微粉、减水剂、防爆纤维、耐热不锈钢纤维。同时公开了一种一种RH炉浸渍管用浇注料的制备方法，首先按质量百分比将0.088mm电熔镁砂细粉、双峰α‑Al2O3微粉、单峰α‑Al2O3微粉、96硅微粉及减水剂加入圆锥式预混机内，预混30分钟，制得预混粉，然后按质量百分比向混料机内加入板状刚玉骨料、防爆纤维和耐热不锈钢纤维混炼2分钟，再向混料机内加入制备的预混粉混炼6分钟即得。本发明使用ρ‑Al2O3作为RH炉浸渍管用刚玉尖晶石浇注料结合剂，然后添加复合α‑Al2O3微粉及电熔镁砂，可以显著提高材料的荷重软化温度、高温强度和显著改善材料的抗渣性能，提高RH炉浸渍管使用寿命。
Castable for dip pipe of RH furnace and preparation method of castable
The invention discloses a castable for an RH furnace dip pipe. The castable comprises tabular corundum, alpha-Al2O3 micro powder, rho-Al2O3, 96 silica powder, a water reducing agent, explosion-proof fibers and heat-resistant stainless steel fibers. Meanwhile, the invention discloses a preparation method of the castable for the dip pipe of the RH furnace, which comprises the following steps: firstly, adding 0.088 mm fused magnesia fine powder, bimodal alpha-Al2O3 micro powder, unimodal alpha-Al2O3 micro powder, 96 silica powder and a water reducing agent into a conical premixing machine according to the mass percent, and premixing for 30 minutes to obtain premixed powder; adding the tabular corundum aggregate, the explosion-proof fiber and the heat-resistant stainless steel fiber into a mixer according to the mass percentage, mixing for 2 minutes, adding the prepared premixed powder into the mixer, and mixing for 6 minutes, thereby obtaining the anti-explosion anti-explosion heat-resistant corundum composite material. The rho-Al2O3 is used as a corundum spinel castable binding agent for the RH furnace dip pipe, and then the composite alpha-Al2O3 micro powder and the fused magnesite are added, so that the refractoriness under load and the high-temperature strength of the material can be remarkably improved, the slag resistance of the material can be remarkably improved, and the service life of the RH furnace dip pipe is prolonged.
本发明公开了一种RH炉浸渍管用浇注料，包括板状刚玉、α‑Al2O3微粉、ρ‑Al2O3、96硅微粉、减水剂、防爆纤维、耐热不锈钢纤维。同时公开了一种一种RH炉浸渍管用浇注料的制备方法，首先按质量百分比将0.088mm电熔镁砂细粉、双峰α‑Al2O3微粉、单峰α‑Al2O3微粉、96硅微粉及减水剂加入圆锥式预混机内，预混30分钟，制得预混粉，然后按质量百分比向混料机内加入板状刚玉骨料、防爆纤维和耐热不锈钢纤维混炼2分钟，再向混料机内加入制备的预混粉混炼6分钟即得。本发明使用ρ‑Al2O3作为RH炉浸渍管用刚玉尖晶石浇注料结合剂，然后添加复合α‑Al2O3微粉及电熔镁砂，可以显著提高材料的荷重软化温度、高温强度和显著改善材料的抗渣性能，提高RH炉浸渍管使用寿命。
Castable for dip pipe of RH furnace and preparation method of castable
一种RH炉浸渍管用浇注料及其制备方法
CHU KEQI (author) / WANG HAIJUN (author) / YANG JIANJUN (author)
2022-12-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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