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Comparative study of stirred and vibratory mills for the fine grinding of muscovite, wollastonite and kaolinite
Luleå tekniska universitet.
1990 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 61, no 2, p. 119-129Article in journal (Refereed) Published
Abstract [en]

Muscovite, wollastonite and kaolinite were wet attrition ground in a pilot stirred ball mill (continuous type) as well as a vibratory mill (batch type). The objectives were to compare the two mills' ability to meet a given specification, study process variables' effects in the case of muscovite and wollastonite, and achieve delamination in the case of muscovite. It is shown that the vibratory mill (SWECO) is less efficient than the stirred mill (DRAIS), at least when 12-mm media are used in SWECO. The highest performance of DRAIS is reached when using a low amount of polymer-type dispersant (0.35 g/100 g solids) and a low pulp density (12 wt.% solids) for muscovite. Bead size had no influence under the experimental conditions, but the bead charge had a strong positive influence. With wollastonite, the smaller grinding media (0.3 - 0.4 mm) and a low pulp density (25 wt.% solids) led to the best efficiency. A low amount of polymer-type dispersant and higher amounts of beads in the mill had a strong positive influence

Place, publisher, year, edition, pages
1990. Vol. 61, no 2, p. 119-129
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-13553Local ID: cca09520-2cbd-11dd-9c9b-000ea68e967bOAI: oai:DiVA.org:ltu-13553DiVA, id: diva2:986506
Note
Godkänd; 1990; 20080528 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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