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Ultrafine Grinding of Several Industrial Minerals by the Attrition-Grinding Process.

PB210983

Publication Date	1972
Personal Author	Stanczyk, M. H.; Field, I. L.
Page Count	34
Abstract	Ultrafine grinding of the industrial minerals mica, pyrophyllite, talc, marble, barite, and fluorite was made by wet attrition grinding to yield subsieve size products. The minerals were batch ground in a 10-inch diameter machine to investigate the effect of three test variables, feed pulp density, size and quantity of grinding media on particle size, and bulk density of product and electrical energy requirement. Commercial products of mica and marble were readily ground into subsieve size ranges of near 100 percent minus 325 mesh. Ground products of barite, fluorspar, pyrophyllite, and talc were about 100 percent minus 10 micron. Electrical energy requirements for attrition grinding were very low considering the great amount of particle size reduction obtained. The results indicated that best conditions were for particle size reduction with least amount of electrical energy consumption were obtained when grinding with coarser fractions of sand media, with higher quantity of sand media present and with higher feed pulp density. (Author)
Keywords	Grinding(Comminution) Nonmetalliferous minerals Attrition mills Mica Silicate minerals Talc Marble Barite Fluorite Attrition grinding Pyrophyllite
Source Agency	Invalid Source Agency Code
NTIS Subject Category	94G - Manufacturing Processes & Materials Handling 48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197218

Ultrafine Grinding of Several Industrial Minerals by the Attrition-Grinding Process.

Ultrafine Grinding of Several Industrial Minerals by the Attrition-Grinding Process.
PB210983

Publication Date	1972
Personal Author	Stanczyk, M. H.; Field, I. L.
Page Count	34
Abstract	Ultrafine grinding of the industrial minerals mica, pyrophyllite, talc, marble, barite, and fluorite was made by wet attrition grinding to yield subsieve size products. The minerals were batch ground in a 10-inch diameter machine to investigate the effect of three test variables, feed pulp density, size and quantity of grinding media on particle size, and bulk density of product and electrical energy requirement. Commercial products of mica and marble were readily ground into subsieve size ranges of near 100 percent minus 325 mesh. Ground products of barite, fluorspar, pyrophyllite, and talc were about 100 percent minus 10 micron. Electrical energy requirements for attrition grinding were very low considering the great amount of particle size reduction obtained. The results indicated that best conditions were for particle size reduction with least amount of electrical energy consumption were obtained when grinding with coarser fractions of sand media, with higher quantity of sand media present and with higher feed pulp density. (Author)
Keywords	Grinding(Comminution) Nonmetalliferous minerals Attrition mills Mica Silicate minerals Talc Marble Barite Fluorite Attrition grinding Pyrophyllite
Source Agency	Invalid Source Agency Code
NTIS Subject Category	94G - Manufacturing Processes & Materials Handling 48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197218