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is to develop a new solar water heater system (SWHS) that uses a solar bubble pump instead of an electric pump. The pump is powered by the steam produced from an evacuated tube collector. Therefore, heat could be transferred downward from the collector to a hot water storage tank. The designed system consists of two sets of heat-pipe evacuated tube collectors, a solar bubble pump installed at an upper......
formed by novel anionic-nonionic dimeric surfactant and conventional cationic surfactant cetyltrimethylammonium(1631) were studied. The viscoelasticity, thixotropy, flow curves and constitutive......
: The technological mineralogy of the potash feldspar was investigated and a new collector named Yb105 was adopted to remove iron from potash feldspar ores. The technological mineralogy results indicate... the benzohydroxamic acid can not only increase the recovery of iron and reduce the consumption of oleic acid collector, but also enhance the collecting performance of oleic acid at low temperature, which can......
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, Changsha 410083, China) Abstract: The effects of the grinding media types, mechanical pressure and collector on the electrochemical properties of the galena surface were studied using electrochemical..., the corrosion couple action between galena and iron media not only increases the reducibility of the system, which decreases the adsorbability of the collector on the galena surface, but also produces......
and Bioengineering, Central South University, Changsha 410083, China) Abstract: In single mineral flotation of diaspore, with the oleic acid as collector, the synergistic effect of Tween-20 on the collector... be mixed thoroughly before addition and the best mass ratio of collector oleic acid to potentiator Tween-20 is 30:1. At pH 9, sodium oleate acts with the surface of mineral, at the form of acid-soap......
, Darwin and Melbourne. The system comprises an unglazed flat plate solar collector integrated with borehole storage. It uses night sky radiation to reduce the temperature of the ground near... with 90, 260 and 14 m2 collector area for heat rejection in Alice Springs, Darwin and Melbourne, respectively. At the 20th simulation year, the proposed system is able to achieve a system cooling......
of 40 nm silicon carbide particles than cationic surfactant cetyltrimethyl ammonium bromide (CTAB), but little difference was found between the two when 500 nm silicon carbide particles were used. Thus, although the suspension of silicon carbide particles can be improved and their co-deposition can be promoted with a cationic surfactant CTAB, it is less effective than an anionic surfactant SDS......
surface more hydrophilic than ZnSO4 or DMDC. XPS analysis indicated that the combined depressant could prevent collector adsorbing on the Pb-activated sphalerite surface by a competitive adsorption method, while the combined depressant and collector were co-adsorbed on galena surface. Key words: adsorption behavior; contact angle; complexation; galena; sphalerite; combined depressant 1 Introduction......
Sensitizing Effect of Mixed Surfactants on the Colouration of Scandium(Ⅲ)with Phenylfluorone or Its Derivatives陈华序,邹凤君,王玉兴摘 要:<正> In the presence of mixed micelle of a cationic and a nonionic surfactants,the reaction of scandium(Ⅲ)with phenylfluorone or its derivatives results in a very sensitive colouration:furthermore this chromophoricsystem......
