内蒙古小西沟铅锌矿床矿石特征及可选性试验研究

小西沟锌铅矿床属于低温热液型矿床,矿石组成复杂,伴生铜和银,研究表明,该矿床矿石中的铅、锌、铜和银主要矿化元素以独立矿物产出,但部分黄铜矿与闪锌矿呈固溶体交生。根据矿石性质确定,该矿床矿石可采用混合浮选铜铅(铜、铅分离)—再浮选锌的工艺流程,通过试验获得符合标准的铜精矿、铅精矿和锌精矿,所用药剂没有环境污染,符合当前技术条件,可以开发利用。     

麦兹矿田铅锌矿化演化特征及找矿

麦兹铅锌矿受下泥盆统化学沉积层及细碎屑沉积层控制，与火山活动，火山活动中心关系密切，属火山喷气沉积改造型铅锌矿床，矿田内具有铅锌矿找矿前景。     

龙门山南段宝兴至荥经地区铅锌矿的成矿条件和成矿模式

通过龙门山南段宝兴至荥经地区区域地质、铅锌矿化特征的研究，划分矿化类型，着重分析区域成矿地质条件，提出“层─盆─破─热”是本区层控型铅锌矿形成的基本因素。总结出铅锌矿在本区形成时间有“三个高峰期”，空间集中于“一带两弧”的时空分布规律。在分析不同矿化类型成矿模式的基础上，建立了区域综合理想成矿模式，为本区找矿靶区和预测区的确定奠定了坚实基础。     

自然界中ZnS-CdS完全类质同象系列的发现和初步研究

过去认为在自然界中的Cd只能有限替代ZnS中的Zn。但是，近几年笔者在研究贵州牛角塘镉锌矿床时，经电子探针、扫描电镜和透射电镜等多种方法的研究，发现锌硫化物中的Cd主要以类质同象存在，其含量可从0．8％增至37．93％；镉硫化物中的Zn同样主要以类质同象存在，其含量为2．43％～38．64％。锌硫化物与镉硫化物成渐变的过渡关系，并且Zn与Cd成很好的负相关关系，相关系数达0．99以上，形成ZnS-CdS的完全类质同象系列。这一发现无论在矿物学，还是在地球化学和矿床学上都具有重要的理论意义和实用价值。     

广西老厂式铅锌矿床成因研究

老厂式铅锌矿是产于泥盆系和寒武系不整合界面之间的脉状中温热液铅锌矿床，受断裂构造控制。成矿物质来源于深部岩浆和基底地层，成矿流体以岩浆水为主，混有部分雨水的混合水。矿床成因属沉积-岩浆热液改造富集矿床。     

锌精矿氧压酸浸液中铟的提取研究

对锌精矿氧压酸浸液中铟的提取进行了研究,在1.0m o l/L的H2SO4介质中,铟可被P204定量萃取,当萃取相比为O/A=1/4,进行三级萃取,平衡时间为3m in时,In萃取率达97%以上;对负载有机相用3m o l/L的HC l进行三级反萃,O/A=5/1,平衡时间为3m in,In反萃率为99.62%。     

广东大宝山南部铅-锌多金属矿床地质特征及找矿方向

大宝山南部铅-锌矿床赋存于大宝山向斜内的中泥盆统东岗岭组下亚组碳酸盐岩地层中,矿床的形成与地层、构造、岩浆活动有关,通过对该矿床成矿特征及控矿因素的分析,对比矿区外围凉桥—新江、官坪—大镇两个有利成矿远景区的成矿地质条件,研究认为,这两个远景区的成矿地质条件与大宝山南部铅-锌金属矿床基本类似,在矿区外围多个矿化集中区中,最具找矿潜力。     

Environmental investigation for causality and remediation of cadmium contaminated soils in Tak Province, Thailand

Highly elevated cadmium concentrations in paddy soil in the Mae Sod District, Tak Province, Thailand, was detected and widely reported in 2003. This emergence provoked public interest and demands for responsibility and remedial actions. As zinc mines and concentrator were located in the upstream area, mining activities were proclaimed a contamination source. Department of Primary Industries and Mines （DPIM）, a governmental organization responsible for mining and mineral processing, was thus challenged to verify the reliability of post monitoring data displaying consistently low heavy metal concentrations in compliance with the standard limits for over 15 years. Detailed survey and deep-going research on the causes, boundary and severity of cadmium contamination as well as the environmental impact alleviation were consequently conducted. Environmental samples were accumulated systematically for 2 years throughout the areas of upstream and downstream mining sites. A total of 259 soil samples from 53 spots at the depths of 0-20, 20-40, 40-60 and 60-200 cm were drilled with hand auger. Samples of water, stream sediment and mine tailing were also collected. Chemical analysis for cadmium （Cd）, zinc （Zn） and lead （Pb） concentrations with AAS and ICP were undertaken. The contaminated area was finally defined to spread over approximately 18 square kilometer mainly of mountainous mineralizing land and colluvium.     

Effect of oxidation potential and zinc sulphate on the separation of chalcopyrite from pyrite

The effects of oxidation potential (Eh) and zinc sulphate on the separation of chalcopyrite from pyrite were investigated at pH 9.0. The flotation recovery of these minerals is Eh dependent with maximum separation obtained at 275 mV SHE. Zinc sulphate addition improved this mineral separation at an Eh value of 275 mV by selectively depressing pyrite flotation. A different result was obtained at lower Eh values where zinc sulphate addition improved chalcopyrite flotation but had no or little effect on pyrite flotation. These opposite effects of zinc sulphate on mineral flotation were reconciled by examining the surface species of these minerals. The selective depression of pyrite flotation by zinc sulphate was also confirmed in the flotation of two copper ores.