This course covers the purpose of the lime kiln and the role of lime (CaO) in the chemical recovery process at a kraft pulp mill. Then it describes the components and sections of a rotary lime kiln, and the chemical reaction that takes place inside the kiln. Finally, it lists some common problems experienced in lime kilns.
•Identify the role of the Recaust system in a kraft pulp mill
•Describe the role of lime and the lime kiln in the recausticizing process
•Describe the calcining process
•Identify the major components and sections of a rotary lime kiln
•List the factors that affect the efficiency of the calcining process
•Describe exhaust gas treatment and monitoring
•Describe common problems in rotary lime kilns
•List key operating variables
