简介:以废弃锡合金的回收利用为目标,计算绘制了Sn-Pb、Sn-Sb及Sn-Zn二元合金的气-液相平衡成分图。结果表明:Pb、Sb及Zn能够有效地与Sn分离。以此为指导,对不同成分的Sn-Pb合金、Sn-Pb-Sb合金、Sn-Pb-Sb-As合金、粗Pb合金以及Sn-Zn合金开展真空蒸馏工业化实验研究。实验结果表明:Sn-Pb合金在1323K条件下经真空蒸馏可获得含Pb>99%的粗Pb和含Pb≤0.003%的Sn;Sn-Pb-Sb合金经一次真空蒸馏,可得到含Sn量>90%、含Pb量≤2%、含Sb量≤6%的粗Sn和含Sn≤2%的粗Pb;粗Sn经过真空蒸馏后,产品中Pb和Bi含量达到Sn锭GB/T728—2010中Sn99.99A级标准,超过50%的As和Sb得到脱除;Sn-Pb合金在1173K。体系压力20-30Pa条件下真空蒸馏8-10h,得到的产品Zn中含Sn<0.002%,Sn中含Zn约3%。
简介:为提高硼的去除率,研究了电磁感应精炼过程中硼杂质在CaO-SiO2-BaO-CaF2四元渣和熔硅之间的分配系数LB,讨论了四元渣系中CaO/SiO2质量比、BaO和CaF2含量、熔炼时间对LB的影响规律。结果表明:随着CaO.SiO2渣中BaO和CaF2含量的增大,LB值增大。当CaO/SiO2质量比为1.1:1、BaO和CaF2含量分别为15%和20%时,CaO.SiO2.BaO.CaF2四元渣去除熔硅中硼杂质效果最好,LB达到最大值6.94,并且LB随着熔炼时间的延长而增大。经过两次造渣后,熔硅中硼含量由3.5×10.5降到3.7×10.6,硼的去除率达到89.4%。
简介:AhotrunnermanifoldasaPvTapparatus,ApplicationofindustrialwasteofPET/PEcore/sheathnon-wovenfabricstocompositematerials,Automationandinnovativeprocesstechnologymouldsbirkby'sfuture,HDPEblow-moldedbottlepinch-offweldstrengthatvariousmolecularweights,Mercer'skernelbasedlearningforfaultdetection,Micromoulding:processcharacteristicsandproductproperties,Microstructureofblowmoldedbottlesfrompolyolefinnanocompositespreparedbymeltcompounding.
简介:NewBattenfeldRl0robotfirstpresentedatFAKUMA:thedynamicstarperformeroftheUNIROBseries;Polymerweldingofinjectionmoldedceramicsandmetals;Shopfloorschedulingwithsimulationbasedproactivedecisionsupport;Thepotatoasarawmaterialforbiodegradableplastics;Thresholdenergyswitchinganditsapplicationtowirelesssensinginhighenergymanufacturingprocesses;Tribologicalstudiesofpolyamide6andhigh-densitypolyethyleneblendsfilledwithPTFEandcopperoxideandreinforcedwithshortglassfibers。