The preparation of zinc sulfate heptahydrate and copper sulfate pentahydrate from calcined zincblende was investigated.

用经温后的闪锌矿石与稀硫酸反应制备七水硫酸锌和五水硫酸铜。

The possibility of utilizing low calciferous rock and blende tails in the cement industry has been studied.

研究利用低钙石和闪锌尾矿代替粘土的水泥熟料。

Research and design for self-aligning device with terminal small gear driving for calcinatory of certain factory correlative task.

摘要结合课题研究，对某厂传动级小齿轮自调位装置进行了设计研究。

Moreover, based on the merit and the shortcoming of the fluidized calcinator, it provides a new spiral flow calcinator.

基于流态化的优缺点，还提出了一种新型旋流的设想。

Thermal dynamical analysis on the calcine system of cement-precalcination kiln in Shangdong Lunan Cement Ltd.Co. was made in this paper, exergy and its analytical method were introduced.

通过对山东鲁南水泥有限公司的水泥预分解窑系统的热力学分析,介绍了火用的概念和火用平衡分析法。