Abstract:

In order to further optimize the crushing grinding process and equipment configuration of

Qidashan Iron Mine，the crushing and grinding process was investigated. The results show that the new

crushing system is more efficient in combination with the complexity of equipment configuration and the

amount of raw ore treatment. The screening efficiency of the new system on site is better than that of the old

system. Therefore，the fine screening efficiency of the old system has room for improvement. The classifica⁃

tion efficiency of each operation cyclone is not ideal，and the classification efficiency of the first stage is bet⁃

ter than that of the second stage and the coarse fine classification efficiency. The energy utilization efficiency

of the on-site second stage ball mill is low，and the first stage grinding effect is better than the second stage

grinding. The results of the process investigation analysis can lay a foundation for the application of new

equipment and new technology.

Key words:

crushing, grinding, process investigation