| 摘要 |
<p>Refractory mixt. contains per 100 kg of prod. 25% raw clay of 20-25% commercial alumina for Proving, 25% raw clay of 20-25% commercial alumina from Chareute, 25% baked clay of 40-42% alumina from e.g. Proving and 25% magnesis waste having high alumina content. Amt. used is reduced. The mixt. is chemically inert towards iron-based metals.</p> |
