全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:E.T. Pecina , M. Rodríguez ...
来源:[J].Minerals Engineering(IF 1.207), 2008, Vol.22 (5), pp.462-468
摘要:Abstract(#br)The objective of this work was to determine the effect of Leptospirillum ferrooxidans on the floatability of chalcopyrite, sphalerite, and pyrrhotite by using xanthate as a collector. The tests were carried out in the absence and presence of bacteria in relation...
作者:E.T. Pecina , A. Uribe ...
来源:[J].Minerals Engineering(IF 1.207), 2005, Vol.19 (2), pp.172-179
摘要:Abstract(#br)Lead and copper activation of pyrite in the presence of thiol collectors was examined by means of cyclic voltammetry and microflotation techniques. Di-isobutyl dithiophosphinate (Aerophine 3418A) and alkyl thionocarbamate (AERO 3894) were employed as collector of lea...
作者:E.T. Pecina , L.F. Camacho ...
来源:[J].Minerals Engineering(IF 1.207), 2012, Vol.29, pp.121-123
摘要:Abstract(#br)The pyritic sulphur extraction from a sub-bituminous coal in an oxidizing aqueous media was examined. The results show that the pyritic coal desulphurization in H 2 SO 4 solutions and in presence of H 2 O 2 could be effectively increased to 89% by the addition of com...
作者:E.T. Pecina , A. Uribe ...
来源:[J].Minerals Engineering(IF 1.207), 2005, Vol.19 (9), pp.904-911
摘要:Abstract(#br)The interaction of sodium-di-isobutyl dithiophosphinate (DTPINa) with galena and pyrite in alkaline media (pH 9) was examined using cyclic voltammetry, open circuit potential and contact angle techniques. Analysis of results suggests that the collector interacts...
作者:E.T. Pecina , R. Torres
来源:[J].Construction and Building Materials(IF 2.293), 2010, Vol.24 (11), pp.2084-2090
摘要:Abstract(#br)The influence of activator ratio, time, and curing temperature on the mechanical strength of geopolymers synthesized from natural zeolite was evaluated by employing silicate solutions and sodium hydroxide. The results demonstrated that an increase in the activat...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×