Boiler slag 10 01 01
By-product of bituminous coal combustion in pulverised coal-fired boilers which gravitationally falls from the combustion chamber and is hydraulically discharged by slag removal system to sedimentation chambers and then to storage yards.
Composed of dark grey, irregular shaped grains with a porous and nitrous structure. Characterised by grain size typical for gravel and sand fractions, but 75% of the slag is below 2 mm. Features a stable chemical composition and is not hazardous to the environment. In terms of concentration of radioactive elements, does not exceed permissible limits and can be used as a raw material or material used for buildings occupied by people or animals. Meets the requirements for aggregates used for land levelling, road building and construction of sports and recreational facilities. In the construction sector, used mainly as an agent for ceramic mass weakening. Its application contributes to the improvement of quality and reduction of deficiencies of ceramic products (improvement of plasticity, prevention against cracking and deformation, improvement of porosity).
Boiler slag application:
- in the ceramic sector as a material leaning clayey materials,
- in road building (for road construction and hardening, for embankment building),
- in the cement industry,
- in underground mining operations (for mine backfilling, goaf sealing, filling of abandoned workings, etc.),
- for land reclamation and levelling.