- The selected coal refuse was treated by heat activation under different temperatures and different calcining time.
- The calcined coal refuse samples were ground and mixed into Portland cement in certain proportion.Mortar strength of coal refuse cement was tested.
- The construction of industrial park has made achievement at sight.It marks with the end constructing the 600 thousand KVA coal refuse thermal power station.
- Decision fuzzy election (DFE) model was used with a view of strength and consumed energy for grinding.At last the best calcining technics of the coal refuse was found.
- The environment protection section build the index system from the utilization ratio, added value and the social benefit for the flyash, engine ash and coal refuse.
- Extracting alumina from coal refuse, sintering cement clinker directly from residues and circulating waste gas and liquid is a unusual technology for utilization of coal refuse.