نتایج جستجو برای: copper refining
تعداد نتایج: 93919 فیلتر نتایج به سال:
Purpose Integrated thinking involves a holistic, multi-capital approach to decision-making and operations promote value creation sustainability. This paper aims outline schematic which can be used gauge the levels of integrated by organisations. Design/methodology/approach The researchers partnered with an independent consulting firm (“Sustain-X”) has developed tool for evaluating thinking. A t...
this study was performed to investigate the effects of refining on the mechanical and optical properties of waste newspaper. waste newspapers were prepared from gorgan ettelaat newspaper agency and were cut to 5 centimeter pieces, and then were soaked with sufficient distillated water. after 1 day fibers were separated by disintegrator and freeness values for each pulp before and after refining...
Corrosive Sulfur in transformer oil has been the cause of high profile transformer failures in recent years. Oil treatments consisting of copper passivators have been only partially effective. DSI has discovered a multi-step method that has been proven to change oils with corrosive sulfur into non-corrosive status, as well as significantly slowing oxidation and ageing of insulating oil and pape...
In the present study, a typical flux containing 90wt% NaCl-KCl, 8wt% Na2SiF6 and 2wt% CaF2 was used to remove the inclusions from the melts of A380 and A319 aluminum alloy scraps. The effect of flux amount on refining efficiency was investigated using tensile test, reduced pressure test (RPT), metallography and SEM. The effect of flux on the 6063 wrought aluminum melts was also studied. On the ...
Cobre refinado a fogo (FRHC) possui diversas aplicações, principalmente na produção de fios e cabos elétricos; metal com alto teor impurezas, especialmente oxigênio, cuja elevada concentração impurezas pode afetar as propriedades do material. Dentre propriedades, sobressai alta condutividade térmica elétrica. Este artigo tem como objetivo realizar uma prospecção científica tecnológica sobre inf...
ni-hard4 white cast iron is excellent wear resistant material and has been widely used in wearaffected equipment operated under extreme conditions, such as in mineral processing, cement, copper and iron manufacturing. in this study the effect of titanium addition (1.2, 0.7 and 0.2 wt.%) to the ni-hard 4 cast iron with the nominal composition of si= 1.5%, mn=0.5%, c=3%, p=0.05%, s= 0.05%, mo= 0....
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید