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Numerical simulation on trapping efficiency of steady filtration process indiesel particulate filter and its experimental verificationZHANG Gui-ju(张桂菊)1, 2, EJia-qiang(鄂加强)1, 3, ZUO Qing-song(左青松)1... of filtering wall and exhaust-flow characteristic parameters on trapping efficiency were also analyzed and researched. The results show that: 1) The two developed mathematical models are consistent......
of contamination can affect the extraction efficiency with the same extracting agents. Extraction of metals from artificially spiked soils is more efficient than from naturally contaminated soils because... overemphasize the extraction efficiency of total heavy metals. Minimal attention has been paid to the distribution of chemical speciation of heavy metals after extraction with LWMOAs in copper mine......
extraction after pre-oxidation, matched the experimental data very well, indicating that the proposed FFBPs were capable of successfully predicting the pre-oxidation efficiency of refractory gold..., whereas the MAPE for ferric extraction was 19.92% calculated by MVRA method. Table 7 Weights of adopted FFBP Table 8 Relative importance of input variables on value of efficiency Fig.7 Measured......
Current efficiency in electro-winning of lanthanum and cerium metals from molten chloride electrolytesDeepak Kumar Sahoo1,Harvinderpal Singh1,Nagaiyar Krishnamurthy21. Rare Earths Development Section..., and current density on the current efficiency was studied. All these parameters were varied to get the highest current efficiency and metal yield. The major non-rare earth impurities with the deposit......
angles on the rock fragmentation process, cutting characteristics and breaking efficiency. The results show that the simulated results are in a good agreement with previous theoretical study. The main... the free surface. According to the history of vertical cutting force, it is shown that the peak force is decreased by embedded cracks. The study on cutting efficiency was conducted by combining the quantity......
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Enhanced efficiency of graphene-silicon Schottky junction solar cell through inverted pyramid arrays texturationJiajia Qiu1,Yudong Shang2,Xiuhua Chen2,Shaoyuan Li1,3,Wenhui Ma1,3,Xiaohan Wan3,Jia... id="ChDivSummary" name="ChDivSummary">Nanostructures of silicon are gradually becoming hot candidate due to outstanding capability for trapping light and improving conversion efficiency of solar cell......
油酸/正丁醇/碳酸钠微乳液萃取钴的研究王建宏1,朱小轩1,陈家庆1,李扬1(1.北京市北京石油化工学院)摘 要:对油酸/正丁醇/碳酸钠微乳体系进行萃取钴的研究,考察料液中酸的浓度,料液浓度,乳水比,搅拌时间和搅拌转速对钴的萃取率的影响,结果表明,随着料液中酸浓度的升高,萃取率升高,随着料液中钴浓度的升高,萃取率下降.最佳的操作条件为乳水比1∶2.5,搅拌时间2min,搅拌转速200r/min,在此条件下,其萃取效率>80%.进一步的展望表明,油酸/正丁醇/碳酸钠微乳体系有用于铜/钴,锌/钴,镍/钴分离的可......
Article ID: 1003-6326(2005)05-1178-07 A new extraction process of carbonaceous refractory gold concentrate MENG Yu-qun(孟宇群) (Institute of Metal Research, Chinese Academy of Sciences, Shenyang... pretreatment. Since the carbonaceous matter in concentrate possesses a strong capability of preg robbing, the cyanidation process is not suitable for the extraction of gold after pretreatment. However......