Waste nitrilon fibre can be hydrolyzed catalytically in a autoclave the hydrolysate can be compounded to a new casting adhesive.
腈纶废料经高温、高压、催化水解后复配，可得到一种新型铸造粘结剂。
But current casting and processing technique show disadvantages that results in a yield rate of only 25-35%, and serious waste of materials and energy.
但落后的现有铸锭工艺和加工工艺，使综合成品率仅有25 ~ 35%，造成了材料和能源的严重浪费。
To enlarge the profit of casting, the paper explores the melting character, operation and structure of the cannon stove for big scale waste steel to give information to someone doing casting work.
基于扩大铸造利润空间的目的，探讨大比例废钢冲天炉的熔化特点、操作及其结构问题，供有关铸造工作者参考。
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