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Flotation performances of polymorphic pyrrhotite 总被引:1,自引:0,他引:1
The floatability of different crystalline structures of pyrrhotite (monoclinic and hexagonal) was studied. It is shown that
the floatability of monoclinic and hexagonal has obvious difference, and that the flotation recovery of monoclinic pyrrhotite
is larger than that of hexagonal pyrrhotite using different collectors. When butyl dithiophosphate is used as the collector,
the recovery is larger than that by sodium butyl xanthate and sodium diethyl dithiocarbamate. At the pH values ranging from
6 to 9, monoclinic pyrrhotite can be floated well, and the flotation recovery is higher than 90%. Monoclinic and hexagonal
pyrrhotites are more easily activated by Cu2+ in acidic conditions than in alkaline conditions. But Cu2+ cannot activate hexagonal pyrrhotite using sodium diethyldithiocarbamate as the collector. By the measurement of contact
angle, it is indicated that monoclinic and hexagonal pyrrhotites float well and are easily activated by Cu2+ when dithiophosphate is used as the collector. Using sodium diethyl dithiocarbamate as a collector, the relationship between
potential and pH range for pyrrhotite flotation is established. At pH 5, the optimal potential range for flotation of monoclinic
pyrrhotite is about 125–580 mV (vs SHE), with the maximum flotation occurring at about 350 mV (vs SHE); the optimal potential
range for flotation of hexagonal pyrrhotite is 200–580 mV (vs SHE), with the maximum flotation occurring at about 300 mV (vs
SHE). 相似文献
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溶浸提铜技术发展概况及前景分析 总被引:4,自引:0,他引:4
本文阐述了溶浸提铜技术国内外发展概况,就其研究成果、生产经验及发展方向进行了归纳与分析,并对其在我国的应用前景进行了探讨。 相似文献
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文章阐述了浸出-溶剂萃取-电积提铜技术的发展概况,对其研究成果、生产经验及发展方向进行了归纳与分析,就其在我国的应用前景进行了探讨。 相似文献
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1 INTRODUCTIONZincoxideoresarethemainsourceofzincmetalaf terzincsulfideores .Withtheescalatingdepletionofzincsulfideores,zincoxideoresincludingwillemite(Zn2 SiO4 ) ,hemimorphite[Zn4 (Si2 O7) (OH)·H2 O]andsmithsonite (ZnCO3) ,becameanimportantsourceofzinc[1] .InChina,zincoxideoresarerelativelyabundant,whicharemainlystoredinsouthwestandnorth westChi na,suchasYunnan ,Sichuan ,GuangxiandGansuprovince[2 ] .Manystudieshavebeendoneontheconcentrationofzincoxideores,yettheprogressesaresli… 相似文献
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研究抑制剂甘油基黄原酸钠(SGX)在铁闪锌矿与黄铁矿浮选分离过程中的作用机理。通过浮选实验考察该抑制剂对硫化矿物的浮选抑制行为。结果表明,用丁黄药作捕收剂,在SGX存在下铁闪锌矿能被Cu2+活化从而具有良好的可浮性,而黄铁矿不能被Cu2+活化;在pH为4-11的范围,SGX的用量小于50mg/L时,可以实现两种矿物的选择性分离。动电位分析表明,SGX在Cu2+存在的条件下不能阻止丁黄药的阴离子在铁闪锌矿表面的吸附,但能阻止丁黄药的阴离子在黄铁矿表面的吸附。吸附等温测试结果表明,SGX在黄铁矿表面的吸附量远比在铁闪锌表面量大。 相似文献
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1INTRODUCTION Inthepastdecade,muchprogresshasbeen madeinunderstandingthereactionsofasulfidemineralsurfacewithxanthateagents.Manyelec trochemicaltechniqueshavebeenemployedto studythereactionmechanismofsulfideminerals(suchaspyrite,galenaandchalcopyrite)with xanthatereagents[14].Theseinvestigationsindi catethattheoxidationofboththemineralandthe collectorplaysanimportantroleintheflotationprocess.Itisgenerallybelievedthatthereactions producethehydrophobicparticlesurfacesrequired inflotation.It… 相似文献
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浸出—溶剂萃取—电积提铜技术的发展及应用前景 总被引:3,自引:0,他引:3
文章阐述了浸出-溶剂萃取-电积提铜技术的发展概况,对其研究成果,生产经验及发展方向进行了归纳与分析,就其在我国的应用前景进行了探讨。 相似文献
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本就德兴铜矿堆浸厂抽产以来所存在的问题和困难,结合经往试验研究成果和借鉴国外一些生产经验进行了堆浸各主要影响因素分析,并据此围绕堆浸厂尽快达产达标、做大、做强,提出了相应的一此措施和建议。 相似文献