Slag cement proportioning plant

As of Year 1997, China Himent Corporation ordered its first proportioning plant to blend BF slag powder from steel industry, fly ash from power plant, and Portland cement to make better BF cement for concrete batching plants.
As of Year 2000, China Himent ordered the second plant for same purpose, but the capacity of storage silo are tripled.
We use bucket elevator to lift mixed product to silo top for the first order, but pneumatic system for the second.