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furnace at 800 °C for 5 h. About 0.2 g of the ashed sample was digested with 5 mL concentrated nitric acid and 1 mL perchloric acid in Teflon beakers. Breakers with fluid were first heated gently... simulate the leaching effect when the residue was piled in the opening environment. And the specific operations were as follows. About 2 cm thick quartz sand was placed into the PVC plastic tube......
用的粘结剂主要包括乙烯基类,丙烯酸类和纤维素醚类[22-32]. 乙烯基类粘结剂在各个行业中均有广泛应用,如常见的PVC制水管或家具,食品和纺织加工业所用的聚乙烯醇(PVA),以及在流延成型工业中最常被报道的聚乙烯醇缩丁醛(PVB)等.其中一部分能溶于水的聚乙烯醇类化合物被广泛应用于水系流延成型工艺中.当选用这类粘结剂时,需注意它们在烧结时会分解为一些小分子化合物,如一氧化碳,水和丁醛等......
chloride (PVC) net (pore diameter 1.5 mm) which might help promoting subtractively the wind wave and stabilizing the inner habitat. This mesh cover could also provide an extensive surface area......
through the ore sample by gravity force and collected in PVC containers. The leaching solution was not re-circulated. The columns were maintained isotherm using an external heating coil wrapped around......
in the regions without obvious faults and structures, and transported to laboratory sealed with PVC bags packed. The tests were conducted on a servo- controlled testing system (TAW-2000) with a maximum......
S H, ZHAO X K. Effects of germanium additions on microstructures and properties of Al-Si filler metals for brazing aluminum [J]. Transactions of Nonferrous Metals Society of China, 2016, 26: 775-782... modeling of the extraction of uranium(VI) into a polymer inclusion membrane composed of PVC and di-(2-ethylhexyl) phosphoric acid [J]. Journal of Membrane Science, 2013, 425-426: 169-175. [34] HISS T G......
,炉渣和烟气分别从放锍口,放渣口和排烟道排出. 图1 底吹熔池水模型 Fig. 1 Bottom-blowing bath hydraulics model 水模型内部液体为水,液面深度为0.18 m,喷嘴距液面处的垂直距离为0.10~0.18 m.通过PVC透明胶管连接电磁式小型空气压缩机,玻璃转子流量计及氧枪,其中玻璃转子流量计的型号为LZB-15;其测量范围是0.25......
模型与材料 相似材料试验采用如图1所示全长高度为2.5 m的三维底部放矿物理试验模型,相似比为1: 25.为方便观察矿岩散体装卸情况,故模型正面材质选用可拆卸的半透明有机玻璃板;模型其余部分使用材质相对较轻且强度较大的聚氯乙烯(Polyvinyl Chloride,PVC).为更准确反映实际采场边壁,模型四周的内壁均被打毛以增加其粗糙程度.模型内可装填尺寸为长×宽×高=0.8×0.8×2.0 m3......
. The treated soil was evenly packed into a Polyvinyl chloride (PVC) pot to keep the soil inside and outside the rhizosphere bag at the same level. The soil in the rhizosphere bag was regarded as the rhizosphere......
assessment (LCSA) method for the material selection of sewer pipe was used by AKHTAR et al [163]. Four different material alternatives i.e., polyvinyl chloride (PVC), vitrified clay, and ductile iron......