stage agent addition

7 low copper and high sulphur refractory ore in Chengmenshan Copper Mine,it states that the satisfied selective index can be got by parameter optimization and stage agent addition.

对城门山铜矿7#矿体低铜高硫难选矿石选矿工艺进行系统的参数优化试验研究,研究结果表明,此类矿石通过优化工艺参数以及分段加药能够得到较好的选别指标。

Moreover, such techniques as divided charge, zoning blasting,reasonably choosing explosives and hole-blocking,which could efficiently reduce blasting cost are also proposed.

文中就黑宝山露天煤矿如何降低爆破成本进行了探讨,提出采取分段装药与分区爆破技术、合理选择炸药与炮孔堵塞技术等措施,可以有效控制爆破成本,降低爆破费用。

The effects of operating parameters such as moisture rate,agitation time,agglomeration size,aeration rate and subsection adding oil on Datong coal agglomeration with oil in order for deashing are investigated.

研究油团含水率、搅拌时间、球团大小、充气量以及分段加油等对大同煤油团聚脱灰工艺的影响。