Mechanically-pressed carbon-free corundum spinel ladle brick as well as preparation method thereof
A technology of ladle lining brick and carbon corundum is applied in the field of machine-pressed carbon-free corundum spinel ladle lining brick and its preparation, which can solve the problems of relatively large fluctuation of product performance, inability to eliminate pollution, low production efficiency, etc. Body strength, mitigation of damage, and improved productivity
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[0009] The machine-pressed carbon-free corundum spinel ladle lining brick of the present invention has the following components by weight percentage: 30-50% of plate-shaped corundum particles, 10-20% of high-purity aluminum-rich spinel particles, and 10% of plate-shaped corundum fine powder. ~20%, large crystalline magnesia fine powder 1~9%, high-purity aluminum-rich spinel fine powder 5~15%, high-purity silicon micropowder 1~10%, imported multi-peak α-Al 2 o 3 Micropowder 2-10%, metal silicon 1-4%, binder: polyphosphate 1-5%, polysaccharide 1-3%.
[0010] Among them, there are three particle sizes of tabular corundum particles: 5-3mm, 3-1mm, and 1-0mm; the particle sizes of tabular corundum fine powder are 320 mesh and 200 mesh, and the mass percentages of its chemical components are: Al 2 o 3 ≥99.0%, SiO 2 ≤0.15%, Fe 2 o 3 ≤0.05%, Na 2 O+K 2 O≤0.5%.
[0011] The particle size of high-purity aluminum-rich spinel particles is 1-0.5mm, 0.5-0mm, the particle size of high...
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