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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleOn the mechanical attrition and fragmentation of particles in a fast fluidized bedpt_BR
dc.contributor.authorTardin, PRpt_BR
dc.contributor.authorGoldstein, Lpt_BR
dc.contributor.authorLombardi, Gpt_BR
dc.contributor.authorPagliuso, JDpt_BR
unicamp.authorUNICAMP, FEM, DETF, BR-13083970 Campinas, SP, Brazil USP, EESC, BR-13560970 Sao Carlos, SP, Brazilpt_BR
dc.subject.wosSize Distributionpt_BR
dc.subject.wosCarbon Attritionpt_BR
dc.subject.wosCombustionpt_BR
dc.subject.wosElutriationpt_BR
dc.subject.wosCharpt_BR
dc.subject.wosCoalpt_BR
dc.description.abstractTests were performed in a batch fast fluidized bed, working at ambient conditions, to check the influence of operational conditions, namely, superficial gas velocity, particle diameter, test duration, and solids inventory, on the size reduction process of a friable material particle. The experimental system consisted of a 0.30 in i.d. vertical riser, 2.22 m high, with primary and secondary air injections, main and secondary cyclones, bag filters, and a solids reinjection valve. Tests were performed with calcined oil shale particles, and the fluidization velocity. ranged from 2.89 to 4.81 m/s. Experimental observation showed the particle, size reduction rate Ito be proportional to the fluidization excess velocity and to mass inventory, as in bubbling fluidized beds. It was observed that a significant amount of material was reduced to fines a - nd that the intermediate size intervals also exhibited some increase in their mass fractions. On this,basis, a model was proposed to simulate the process, considering the existence of two. size reduction mechanisms, namely, abrasive attrition and mechanical fragmentation. The, model predicts the effects of the process conditions and changes in size distribution with time.pt
dc.relation.ispartofIndustrial & Engineering Chemistry Researchpt_BR
dc.relation.ispartofabbreviationInd. Eng. Chem. Res.pt_BR
dc.publisher.cityWashingtonpt_BR
dc.publisher.countryEUApt_BR
dc.publisherAmer Chemical Socpt_BR
dc.date.issued2001pt_BR
dc.date.monthofcirculationSEP 19pt_BR
dc.identifier.citationIndustrial & Engineering Chemistry Research. Amer Chemical Soc, v. 40, n. 19, n. 4141, n. 4150, 2001.pt_BR
dc.language.isoenpt_BR
dc.description.volume40pt_BR
dc.description.issuenumber19pt_BR
dc.description.firstpage4141pt_BR
dc.description.lastpage4150pt_BR
dc.rightsfechadopt_BR
dc.sourceWeb of Sciencept_BR
unicamp.cruespUSPpt_BR
dc.identifier.issn0888-5885pt_BR
dc.identifier.wosidWOS:000171079300012pt_BR
dc.identifier.doi10.1021/ie990816cpt_BR
dc.date.available2014-11-14T01:50:35Z
dc.date.available2015-11-26T16:03:50Z-
dc.date.accessioned2014-11-14T01:50:35Z
dc.date.accessioned2015-11-26T16:03:50Z-
dc.description.provenanceMade available in DSpace on 2014-11-14T01:50:35Z (GMT). No. of bitstreams: 1 WOS000171079300012.pdf: 184703 bytes, checksum: 1cc540dcf934af0dfef51cd0a9c5b443 (MD5) Previous issue date: 2001en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:03:50Z (GMT). No. of bitstreams: 2 WOS000171079300012.pdf: 184703 bytes, checksum: 1cc540dcf934af0dfef51cd0a9c5b443 (MD5) WOS000171079300012.pdf.txt: 39867 bytes, checksum: 4c1790e2a2d1ad0b61b4223334449768 (MD5) Previous issue date: 2001en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/68713pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/68713
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/68713-
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