OPF90, LA Ash's CFB bed ash brand is a product from coke combustion. OPF90 (commonly known as bed ash) is unmodified circulating fluidized bed combustion deposit. The OPF90's lime content, particle size and high surface area make the byproduct self-cementing when hydrated. OPF90's properties also allow OPF90 to be used for stabilizing silty/sandy soils for road base in lieu of hauling soils off site.
Excellent for stabilization / solidification
18 to 24% free (available) lime (CaO)
High in Total CaO
High demand for water of hydration
Acid neutralization capabilities
Sorption & Reactivity enhanced by fineness and surface area
Larger particle size for less dust
Temperature rise is generated by hydration of CaO and CaSO4
TCLP concentration well below limits
Do not mix OPF90 with any other chemicals or byproducts, including but not limited to Cement Kiln Dust (CKD), Portland cement or lime, due to certain chemical reactions and/or swell potentials.