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Large-scale Continuous Attrition Grinding of Coarse Kaolin.

PB223935

Publication Date	1973
Personal Author	Davis, E. G.; Collins, E. W.; Feld, I. L.
Page Count	28
Abstract	Large-scale ultrafine grinding tests were made of coarse kaolin using the Bureau of Mines developed grinding process. A 20-inch diameter attrition grinder was used in continuous open- and closed-circuit systems. The studies included single- and multiple-stage open circuit grinding, and also continuous grinding in closed circuit with a 6-inch diameter centrifuge. Using a modified two-stage closed-circuit system, a ground product containing 88.5 percent minus 2-micron-esd material was produced from coarse clay that contained only 9.0 percent minus 2-micron-esd material. The electrical energy consumed during grinding was 327 kilowatt hours per ton of minus 2-micron-esd material produced.
Keywords	Kaoline Grinding(Comminution) Ultrafines Attrition mills Silicate minerals Paper coating clays
Source Agency	Invalid Source Agency Code
NTIS Subject Category	71M - Miscellaneous Materials
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	Prepared in cooperation with the Bureau of Mines, Tuscaloosa, Ala. Metallurgy Research Lab.
Document Type	Technical Report
Title Note	Research rept. 1967-1969.
NTIS Issue Number	197322

Large-scale Continuous Attrition Grinding of Coarse Kaolin.

Large-scale Continuous Attrition Grinding of Coarse Kaolin.
PB223935

Publication Date	1973
Personal Author	Davis, E. G.; Collins, E. W.; Feld, I. L.
Page Count	28
Abstract	Large-scale ultrafine grinding tests were made of coarse kaolin using the Bureau of Mines developed grinding process. A 20-inch diameter attrition grinder was used in continuous open- and closed-circuit systems. The studies included single- and multiple-stage open circuit grinding, and also continuous grinding in closed circuit with a 6-inch diameter centrifuge. Using a modified two-stage closed-circuit system, a ground product containing 88.5 percent minus 2-micron-esd material was produced from coarse clay that contained only 9.0 percent minus 2-micron-esd material. The electrical energy consumed during grinding was 327 kilowatt hours per ton of minus 2-micron-esd material produced.
Keywords	Kaoline Grinding(Comminution) Ultrafines Attrition mills Silicate minerals Paper coating clays
Source Agency	Invalid Source Agency Code
NTIS Subject Category	71M - Miscellaneous Materials
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	Prepared in cooperation with the Bureau of Mines, Tuscaloosa, Ala. Metallurgy Research Lab.
Document Type	Technical Report
Title Note	Research rept. 1967-1969.
NTIS Issue Number	197322