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| Preparation of Ultra-fine Anthraquinone by Ball Milling |
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| DOI：10.11980/j.issn.0254-508X.2012.09.005 |
| Key Words:mechanical ball milling ultra-fine anthraquinone particles size physical settlement |
| Fund Project:国家自然科学基金（21076091）；教育部博士点基金（20110172110026）。 |
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| Abstract:The preparation of ultra-fine anthraquinone (AQ) from commercial AQ by using ball milling and the characteristic of the ultra-fine AQ were introduced in this paper. It was found that in the presence of a surfactant, i.e., dodecyl benzene sulphonic acid (LAS), the larger AQ particles can be separated from the ultra-fine AQ suspension through physical settlement. The amount of such ultra-fine AQ can be quantified by a spectroscopic method and its particle size distribution can be determined by Malvern particle size analyzer. The results indicated that the optimal conditions for ultra-fine AQ preparation at the given ball milling device should be that the milling time is 12 h with 10% of LAS, the suspension sample for analysis should be collected after 30 min’s settlement. The present method can provide the ultra-fine AQ suspension with higher consistency and better uniformity. |
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