论文部分内容阅读
近年来,国內先后有炉渣和珍珠岩材料为骨料的盢旅翱诓牧衔适?有的已在生产中取得了较好的应用效果,受到有关专家学者的重视。我们为改变以往采用石灰石—水玻璃砂制冒口生产碳钢和高锰钢铸件存在的工艺出品率
In recent years, the country has successively slag and perlite materials for the aggregate of ao brigade travel ao animal husbandry appropriate? Some have achieved good results in the production of applications, by the relevant experts and scholars attention. We have to change the past, the use of limestone - sodium silicate riser production of carbon steel and high manganese steel castings exist process yield