方铅矿

The kinetics of the dissolution of galena was investigated by monitoring the mixed potential of galena electrode in ferric sulfate solutions.

摘 要：通过动态测量混合电位，研究方铅矿电极在不同浓度的硫酸铁溶液中溶解的动力学过程。

Because of the lack of thermal expansion data of galena and sphalerite and to further examine the applicability of Modified Ruffa Model, galena and sphalerite,minerals with strong covalent characteristics, have been studied in detail.

论文还用修正Ruffa模型对前人没有进行过高温热膨胀实验的方铅矿、闪锌矿的热膨胀系数进行了预测和实验验证。实验所得到的热膨胀系数和计算结果具有较好的一致性。

The δ^34S in pyrite and galena range from 1.91×10^(-3) to 3.14×10^(-3), showing the mantle sulfur feature.

矿石中黄铁矿和方铅矿δ^34S的变化范围为1.91×10^(-3)3.14×10^(-3)，具有幔源硫的特征。

Galena Black Fonts...

方铅矿黑色字体。。。

By means of adsorption rate measurement,zeta-potential,infrared spectroscopy and X-ray photoelectron spectroscopy ,the mechanism of selective adsorption of Mycobacterium Phlei on the surfaces of pyrite and galena was studied.

运用吸附量测定、ζ-电位研究、红外光谱和X射线光电子能谱分析，探讨Mycobacterium Phlei在黄铁矿和方铅矿表面的选择性吸附作用机理。

Galenite and sphalerite is main carrier mineral and silver mineral is too small to reclaim solely.

方铅矿和闪锌矿是银的主要载体矿物，且银矿物粒度微细，难以单独回收。

Under the same condition, Kds of 125I" on chalcopyrite and galenite were larger than Kds of 125IO3".

大气和低氧条件下，随着混合材料中黄铜矿、方铅矿含量的增加，125I-在混合材料上的Kd值增大。

For same mineral, desorption of 125I" on it was weaker than 125IO3", and sorption of 125I\ I25IO3 on galenite is irreversible.

大气和低氧条件下，黄铜矿、方铅矿对125I-的吸附能力比125IO3-强。

On the base of theorial study,ore experiment is made and feasible grind granularity and medicament system and the flow of Galenite flotation firstly is ascertained.

在优先选铅浮选过程中，经一次粗选，一次扫选，两次精选，所得到铅精矿中铅的品位达66.04%，铅的回收率为87.31%，银的回收率为70.40%，在浮选锌时，一次粗选，两次扫选，两次精选，所得锌精矿中锌的品位58.26%，锌的回收率为82.13%，银的回收率为19.36%，取得了银的总回收率达89.76%较先进的指标。最后，对浮选药剂与方铅矿、闪锌矿和银矿物的作用机理进行了深入探讨与分析，认为本实验中所使用的抑制剂和活化剂不会对银矿物的回收产生不利影响。

It can draw the conclusion thatδ~(34)S_ in solution has an approximate content(0±3‰)with S isotope of pyrrhoSne by measuring S and Pb isotope of sulfide in ore bodies,a lower value shows S in hydrothermal fluid is origin from magma;Linear array of Pb isotope in galenite suggests that Pb may be multisources.

对矿体硫化物进行硫和铅同位素测定，获得溶液的δ~(34)S_与磁黄铁矿硫同位素组成相近约等于0±3‰，δ~(34)S_值小，表明热液硫是岩浆来源，方铅矿铅同位素线性排列，暗示出铅可能是多来源的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。