In big modern concentrators,grindingclassification operation occupies a decisive position and regular investigation and analysis is an important way to improve the operation conditions and efficiency.

• 现代大型选矿厂磨矿分级作业占有举足轻重的地位，经常性的考查和分析是改善作业条件、提高磨矿分级效率的重要途径。