The slag produced by a set of biomass-fired boiler can be reused to avoid energy waste and environmental pollution. There are many ways to reuse the slag.

For example, the slag can be used to improve soil and improve soil performance. If it contains potassium carbonate and organic matter, it can also be used to produce compound fertilizers.

In addition, the slag is a kind of plant ash, it is also a good thermal insulation material for steelmaking.