CKD Lime
Overview
CKD (Cement Kiln Dust) lime is a valuable by-product of the cement manufacturing process. It’s typically composed of fine particles of calcium oxide, calcium silicates, and other minerals.
How is it Generated?
CKD Lime is produced as a result of the particles collected from the facility's air pollution control and collection system.
Beneficial Reuse
CKD beneficial reuse options depend on the characteristics of the raw feed material, kiln operation type, dust collection systems, and fuel type.
Agricultural
CKD in its natural form is a fine-grained dust that is difficult to handle and spread without specialized equipment. CKD lime is produced by processing the dust to improve its handling before it goes to market. CKD lime can adjust pH, provide calcium, magnesium, and fertilizer value in the form of potash, sulfur, and zinc.
The dust form of CKD can also be used as an additive ingredient to produce custom commercial fertilizer products, which may be pelletized or in bulk form. CKD lime could potentially be blended into composts as a fertilizer enhancement.
Because it offers dual functions as both a liming agent and fertilizer, CKD lime often has higher value than other competing materials in the local marketplace. Consult your sales representative on how to best utilize CKD lime to meet your soil needs.
Building Materials
CKD, either in its processed lime form or natural dust form, can sometimes be reintroduced into cement manufacturing in small amounts.
The dust form of CKD can be used to enhance concrete blocks. The dry, alkaline, and reactive nature of the CKD dust makes it useful for solidifying liquid wastes or sludges before disposal to landfills. It can be a less expensive alternative to cement, lime kiln dust, wood shavings, and other solidification agents.
- Landfill cover
- Structural fill for roads
- Cement ingredient
