英文资料论文格式规范

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1、沈阳航空航天大学毕业设计（论文）1“Methodforprocessinggold-bearingsulfideoresinvolvingpreparationofasulfideconcentrate”Thepresentinventioninvolvesamethodforprocessinggold-bearingsulfideorestofacilitaterecoveryofgoldfromthesulfideore.Inparticular,thepresentinventioninvolvesflotati

2、onprocessingofgold-bearingsulfideoresinamannerthatreducesproblemsassociatedwithconventionalflotationtoproduceanoreconcentrate.Thepresentinventionalsoinvolvestheflotationprocessingincombinationwithoxidativetreating,suchaspressureoxidation,anduseofby-productgasfrom

3、anoxygenplantusedtosupplyoxygengasfortheoxidativetreating.Significantamountsofgoldarefoundinsulfideores,inwhichthegoldisassociatedwithsulfidemineralogy.Thegoldisdifficulttorecoverfromsuchsulfideores,becausethegoldistypicallyboundinsulfidemineralgrainsinamannertha

4、trenderstheorerefractorytomanytraditionalgoldrecoverytechniques,suchasdirectcyanidationoftheore.Therefore,sulfideoresarecommonlytreatedtochemicallyalterthesulfidemineraltopermitdissolutionofthegoldduringsubsequentgoldrecoveryoperations.Onetechniquefortreatingagol

5、d-bearingsulfideoreinpreparationforgoldrecoveryistosubjecttheoretoanoxidativetreatmenttooxidizesulfidesulfurinthesulfideminerals,therebyrenderingthegoldmoresusceptibletorecovery.Onemethodforoxidativelytreatingasulfideoreispressureoxidation,inwhichaslurryoftheorei

6、ssubjectedtooxygengasinanautoclaveatelevatedtemperatureandpressuretodecomposethesulfidemineral,freeingthegoldforsubsequentrecovery.Otheroxidativetreatingmethodsincluderoastingandbio-oxidationoftheoreinthepresenceofairoroxygengas.Treatingwholeoresbypressureoxidati

7、onorbyoxidativeroastingisexpensive.Partoftheexpenseisduetoenergyconsumedinheatinggold-barrenganguematerialinthewholeore,andespeciallytheenergyrequiredtoheatwaterinwhichtheganguematerialisslurriedinthecaseofpressureoxidation.Also,processequipmentfortreatingawholeo

8、remustbesizedtoaccommodatethethroughoutofganguematerial,inadditiontothethroughputofthegold-bearingsulfideminerals,therebysignificantlyaddingtothecostofprocesse