OPTIMIZATION OF COMMINUTION CIRCUIT THROUGHPUT AND PRODUCT SIZE DISTRIBUTION BY SIMULATION AND CONTROL

Kawatra, S.K. ; Eisele, T.C. ; Walqui, H.J.

National Energy Technology Laboratory (U.S.)

关键词: Coal Preparation;    01 Coal, Lignite, And Peat;    Crushing;    Comminution;    Mathematical Models;   

DOI  :  10.2172/802862
RP-ID  :  FC26-01NT41062--06
RP-ID  :  FC26-01NT41062
RP-ID  :  802862

美国|英语

来源: UNT Digital Library

【 摘 要 】

The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing the product size distribution, so that the amount of excessively fine material produced can be minimized. This will save energy by reducing the amount of material that is ground below the target size, and will also reduce the quantity of materials wasted as slimes that are too fine to be useful. This will be accomplished by: (1) modeling alternative circuit arrangements to determine methods for minimizing overgrinding, and (2) determining whether new technologies, such as high-pressure roll crushing, can be used to alter particle breakage behavior to minimize fines production. In the sixth quarter of this project, work was centered on analyzing the considerable plant data gathered during the first year of the project. Modeling is being carried out of the hydrocyclone portion of the grinding circuit, since this has been identified as the primary source of overgrinding and inefficiency.