Improved control of the finish grinding process in cement manufacture

Technical Report · Tue Jan 01 00:00:00 EST 1985

DOI:https://doi.org/10.2172/6236811· OSTI ID:6236811

Menacho, J M; Austin, L G; Cuhadaroglu, M S ^[1]

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1. Pennsylvania State Univ., University Park, PA (USA). Dept. of Mineral Processing

Activities developed on Task 6 of the Cement Clinker Project from July 1, 1985 to September 30, 1985 are described in this progress report. Results on eight continuous ball mill tests are included. Experimentation was performed in a 0.99 m diameter air-swept mill at the Kennedy Van Saun facilities in Danville. In the first four runs, the effect of production rate on size distribution of product was tested for the powder filling level around 0.83. In the other tests, the powder filling was changed between 0.7 and 1.25. A preliminary analysis of the results indicates that the internal classification curve is moving in a narrow band even when the product size distribution is strongly affected by the different experimented condition. Also the direct scale-up results from the 8 inch diameter batch mill to the 0.99 mill diameter in batch mode is reported. Predictions overestimate capacity for short times of grinding but they are in good agreement for long times. The presence of components having large and small rate of breakage and occurrence of abnormal breakage are discussed. Future work includes detailed analysis of the data and simulation of continuous test results.

• Research Organization: Construction Technology Labs., Skokie, IL (USA); Pennsylvania State Univ., University Park, PA (USA). Dept. of Mineral Processing
• Sponsoring Organization: DOE/CE
• DOE Contract Number: FC07-82CS40419
• OSTI ID: 6236811
• Report Number(s): DOE/CS/40419-T4-App.; ON: DE91007540; CNN: CR7913-4330
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
PORTLAND CEMENT
GRINDING
ENERGY CONSERVATION
GYPSUM
MANUFACTURING
MODIFICATIONS
PARTICLE SIZE
PROCESS CONTROL
PROGRESS REPORT
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CEMENTS
COMMINUTION
CONTROL
DOCUMENT TYPES
MACHINING
MATERIALS
MINERALS
OXYGEN COMPOUNDS
SIZE
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
360601* - Other Materials- Preparation & Manufacture
420200 - Engineering- Facilities
Equipment
& Techniques