结合生产实例，论述了半终粉磨与分选技术在粉煤灰大型化粉磨作业中的应用。

Combined with some cases in production, a discussion about the application of the techniques of semi-finish grinding and separation to the large-scale grinding of fly-ash is made in this paper.

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针对选别梅山铁矿，其最终精矿品位可以达到53.74%，作业回收率为64.61%，高于选厂分选指标。

In connection with Meishan Iron for sorting, the final concentrate grade can reach 53.74%, the operating rate was 64.61%, higher than the selected plants on the separation indexes.

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主要应用范围：主要用于导体矿物与非导体矿物的分选，也可以代替筛分作业，用于多种物料的分级，以及用于粮食加工和部分选种工作中。

It is mainly applied for separation of conductor and non-conductor minerals and classification of planting materials instead of screening operation as well as food processing and seed selection.

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