LA Ash, Inc. is the world's largest marketer of coke fired CFB ash. LA Ash markets CLR (calcined limestone residue) and CLS (calcined limestone sand) from CFB steam generators from various facilities.

For a description of petcoke, their uses as a fuel, the types of residue that remain after combusting it in a CFB steam generator, and the beneficial uses of these products, please visit our technical support area.

LA Ash markets the CLR (OPF70) and CLS (OPF90) products that remain after combusting the petcoke limestone in CFB steam generators under the brand names OPF70, OPF90 and OPF42. The OPF70 and OPF90 are the raw, unmodified petcoke combustion residue and the OPF42 is a synthetic aggregate produced from the complete processing and milling of the residue.

Our success is not luck. LA Ash understands CFB products. Over ten years of testing and use have taught us the characteristics of these very unique products.

These are only a few of the many processes for which CFB calcined limestone residue and sand can be used.

• Reduce the plasticity index of clayey soil

• Neutralize acidic waste

• Stabilize hazardous compounds

• Solidify sludge and saturated soils

• A base course for paved surfaces

• A surface layer for unpaved surfaces

• In some cases, as an alternative to Portland cement for soil stabilization

Ten years of research and development have produced data to document that CFB byproducts perform as well as or better than traditional materials. And by using these products, businesses are being good environmental stewards by returning byproducts to the manufacturing process rather than to the environment.