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ammonium chloride (N263 C1) , 3 decylmethyl ammonium iodide (N263 I) and 4 butyl ammonium iodide in poly (vinyl alcohol) (PVA) and chitoson (CS) were prepared. The relationship of membrane potentials......
was (20±0.2) ℃, a cadmium iodide starch assay was used according to PAM (or HPAM) standard curve, and the adsorption equilibrium of centrifugal concentration was measured before and after adsorption......
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X射线荧光光谱分析法熔融制样技术的探讨与应用王一凌1,曲月华1,邓军华1(1.辽宁省鞍山市鞍钢股份公司技术中心)摘 要:本文选用三种不同熔融制样方式,研究了熔剂的性质,熔融制样的过程及加热方式等制样条件,探讨了X射线荧光光谱分析法的熔融制样技术.通过脱模剂加入量的试验,证明了在温度,熔融体流动性一致的情况下,挥发性脱模剂碘化铵可不必定量加入.针对铁矿石标准样品的特点,以四硼酸锂为熔剂,通过采用预氧化后高温熔融的制样程序,得到了优化的试验条件.结果表明,铁矿石试样熔融制样时间缩短至100 s/样,使得制样速度与粉......
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]. It has been reported[6-8] that a small amount of heavy metallic ions such as thallium(Ⅰ), lead(Ⅱ), mercury(Ⅰ) and bismuth(Ⅲ) in alkaline cyanide solutions considerably accelerate the rate of gold... is able to multiply the reaction rate by four. CATHRO and KOCH[10] studied the thallium effect on the anodic peak at 0.35 V and found that gold passivation at this peak is prevented. YANG et al[11......
Symposium on Electronics & the Environment, 1998: 42?47. [2] DAVIS A, TRAN T, YOUNG D R. Solution chemistry of iodide leaching of gold[J]. Hydrometallurgy, 1993, 32(2): 143?159. [3] 李桂春, 卢寿慈. 非氰..., 2004, 13(7): 66?68.LI Gui-chun, LU Shou-ci. Experimental investigation for iodide leaching of gold[J]. China Mining Magazine, 2004, 13(7): 66?68. [5] KRYLOVA G S, IBRAGIMOVA N V. Investigation......
<0.074 mm 84.90%, aqueous phase to solid ratio 5?1, NaCN 0.2%, pH 11, stirring speed 1 000 r/min): (a) Thallium; (b) Lead; (c) Mercury; (d) Silver; (e) Bismuth metal ions presented similar... ions on gold leaching from oxide gold ore (Grinding grade <0.074 mm 99.50%, aqueous phase-to-solid ratio 5?1, NaCN 0.2% pH 11, stirring speed 1 000 r/min): (a) Thallium; (b) Lead; (c) Mercury; (d......
of Au, and the balance pH value of Au3+/Au2O3 increases. This is beneficial to gold leaching with iodine-iodide. As the cT(I-) increases gradually in the solution, AuI precipitation appears... complex ion is AuI2-. The thermodynamic analysis of Au-I--H2O system provides theoretical basis for the efficient gold leaching with iodine-iodide. Key words: Au-I--H2O system; simultaneous equilibrium......