Patent ID: 7105146
Filing Date: 2006-09-12
Classification: C04B

Abstract:
1. A process for hydrating lime in batches, comprising: a. measuring a first volume of lime for delivery to a vessel; b. delivering said first volume of lime to said vessel; c. measuring a first volume of water for delivery to said vessel; d. delivering said first volume of water to said vessel; e. mixing said first volumes of lime and water in said vessel to form a slurry; f. pre-selecting a desired process temperature to be maintained in said vessel; g. measuring a process temperature in said vessel; h. controlling said process temperature by determining whether to add a second volume of at least one of water and lime to achieve said desired process temperature; i. measuring said second volume of at least one of water and lime; j. adding said second volume of at least one of water and lime to said slurry; k. forming a corrected value based on said first and second volumes; and l. in a subsequent batch process, delivering a volume ratio of lime to water to said vessel based on said corrected value.