- Title
- Carbothermic reduction of mechanically activated mixtures of celestite and carbon
- Creator
- Setoudeh, N.; Zamani, M. A. A.; Welham, Nicholas
- Date
- 2011
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/37198
- Identifier
- vital:4067
- Identifier
- ISSN:2010-376X
- Abstract
- The effect of dry milling on the carbothermic reduction of celestite was investigated. Mixtures of celestite concentrate (98% SrSO4) and activated carbon (99% carbon) was milled for 1 and 24 hours in a planetary ball mill. Un-milled and milled mixtures and their products after carbothermic reduction were studied by a combination of XRD and TGA/DTA experiments. The thermogravimetric analyses and XRD results showed that by milling celestite-carbon mixtures for one hour, the formation temperature of strontium sulfide decreased from about 720°C (in un-milled sample) to about 600°C, after 24 hours milling it decreased to 530°C. It was concluded that milling induces increasingly thorough mixing of the reactants to reduction occurring at lower temperatures.
- Relation
- Proceedings of World Academy of Science, Engineering and Technology Vol. 74, no. (2011), p. 531-534
- Rights
- Copyright Waset
- Rights
- This metadata is freely available under a CCO license
- Subject
- Activated carbon; Ball milling; Carbothermic reduction; Celestite; Strontium sulfide; Carbon mixtures; Celestite concentrate; Dry milling; Formation temperature; Mechanically activated mixtures; Milled mixture; Planetary ball mill; TGA/DTA; XRD; Ball mills; Barite; Carbothermal reduction; Milling (machining); Milling machines; Mixtures; Strontium; Thermogravimetric analysis
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