Underhole drilling technology solved the difficulties of drilling in wet layers, deepened the drilling under water, and found an effective method of drilling hi pouring crushing layer.
In order to coordinate the smooth implementation of dry acetylene process, it is necessary to traditional wet process calcium carbide crushing process improvement.
为了配合干法乙炔工艺的顺利实施，必须对传统的湿法工艺中电石的破碎工艺进行改进。
3
The lean magnetite ore can be turned into one that has utilization value by wet preconcentration by magnetic separation after fine crushing to discard most of qualified waste.