stage crushing

The process flows are very simple. Barite concentrate is usually output after single-stage washing, two-stage crushing and single-stage jigging separation, without recycling associated minerals ( such as fluorite).

工艺流程比较简单，一般经过一次洗矿、两段破碎、一段跳汰分选产出重晶石精矿，对于其中伴生矿物（如萤石）未进行回收利用。

It is shown in the static and dynamic compression stress-strain results, the curve has a typical three stages form. There are elastic stage, plastic stage, and close-grained stage after crushing.

从其静-动态压缩应力-应变曲线中可以看出，曲线是典型的三阶段形式，即弹性阶段，塑性阶段，及压溃后的密实阶段。

Sandstone in acidic diagenetic enviroment has such characteristic as fast compaction rate, earlier compaction stage, prevalent grain solution and crushing, poor heat resistance and crushing resistance, small free growing space of authigenic mineral, poor reservoir properties and so on.

偏酸性成岩环境砂岩具有快速压实阶段较早、颗粒溶蚀一压碎现象普遍而抗热性和抗压性差、自生矿物的自由生长空间较小以及储集性质较差等特点。