About waste and scrap recycling systems: 
We could provide a whole set of waste rock wool treatment line, which consists of 2 systems:
1.  System 1-Wastes crushing production line(for crushing)
2.  System 2-Wastes compressing briquette/brick production line(for pressing)
 
By using such system, the wastes from rock wool factory could be mixed with some cement, and could be utilized again as raw material. The wastes consists of waste rock wool, waste lava, ash, and undersized slag.
The brick/briquette only needs to use conventional cement as a binder, no additional binder is required, and the cement ratio is about 10%.