Grinding blast furnace slag can use ball mill and vertical mill. Both have advantages. The ball mill with dryer for blast furnace slag requires higher power consumption. But its purchase cost is lower.

Improvements in the grinding process for fine granulated slag was achieved with vertical roller mill. 

In a vertical roller mill, drying, grinding, and separating/classifying of ground material are done simultaneously. The hot air used for drying is supplied with a hot wind generator. Slag contains iron grain, which could damage the rotating table and aggravate grinding efficiency. Hence, the removal of these iron grains before commencing the grinding process, using an external circulation system with a magnetic-separator device, is crucial.

The installation of pre-grinding equipment. A vertical mill for pre-grinding is installed in the upstream of the existing tube mill. With this, pre-grinding and finishing grinding processes are performed separately. Reduction in the size of balls used in the tube mill is expected to improve grinding efficiency. 

Our company can provide two kinds of slag vertical mill and ball mill. You can choose according to your needs. We will have professional technicians to provide services for you. We look forward to cooperating with your company.