中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
Transactions of Nonferrous Metals Society of China
2015年
9期
3119-3125
,共7页
先永骏%聂琪%文书明%王伊杰
先永駿%聶琪%文書明%王伊傑
선영준%섭기%문서명%왕이걸
黄铁矿%石英%体缺陷%成矿流体%组分释放
黃鐵礦%石英%體缺陷%成礦流體%組分釋放
황철광%석영%체결함%성광류체%조분석방
pyrite%quartz%volume defect%metallogenic fluid%component release
以某一典型Cu?Pb?Zn?Fe硫化矿矿床中的黄铁矿和石英为研究对象,对其晶体中的体缺陷特征进行研究.结果表明:天然黄铁矿和石英晶体中存在大量体缺陷,这些体缺陷呈现各种形态,包括长条形、椭圆形和不规则形状,大小从几微米到近百微米不等.由于体缺陷在形成过程中能捕获成矿流体和矿化流体,因此,含有大量成矿元素.水溶液的多种金属和非金属化学成分分析及 EDS 分析结果表明,在磨矿的过程中,矿物中体缺陷将破裂或断裂,向溶液中释放其中的化学成分.在磨矿细度为d90=37μm,含10 g黄铁矿的40 mL清洗溶液中, Cu, Pb, Zn, Fe, Ca, Mg和Cl?的浓度分别达到32.09×10?7、16.51×10?7、19.45×10?7、516.52×10?7、129.50×10?7、 35.30×10?7和 433.80×10?7 mol/L;含石英的清洗水溶液中上述离子的浓度分别达到 19.20×10?7、8.88×10?7、8.31×10?7、82.71×10?7、16.21×10?7、4.28×10?7 和 731.26×10?7 mol/L,此浓度远高于黄铁矿或石英非氧化溶解时相应的浓度.因此,矿物晶体体缺陷中的成矿流体对硫化矿浮选溶液化学具有重要贡献,这将有助于深入认识硫化矿浮选的本质.
以某一典型Cu?Pb?Zn?Fe硫化礦礦床中的黃鐵礦和石英為研究對象,對其晶體中的體缺陷特徵進行研究.結果錶明:天然黃鐵礦和石英晶體中存在大量體缺陷,這些體缺陷呈現各種形態,包括長條形、橢圓形和不規則形狀,大小從幾微米到近百微米不等.由于體缺陷在形成過程中能捕穫成礦流體和礦化流體,因此,含有大量成礦元素.水溶液的多種金屬和非金屬化學成分分析及 EDS 分析結果錶明,在磨礦的過程中,礦物中體缺陷將破裂或斷裂,嚮溶液中釋放其中的化學成分.在磨礦細度為d90=37μm,含10 g黃鐵礦的40 mL清洗溶液中, Cu, Pb, Zn, Fe, Ca, Mg和Cl?的濃度分彆達到32.09×10?7、16.51×10?7、19.45×10?7、516.52×10?7、129.50×10?7、 35.30×10?7和 433.80×10?7 mol/L;含石英的清洗水溶液中上述離子的濃度分彆達到 19.20×10?7、8.88×10?7、8.31×10?7、82.71×10?7、16.21×10?7、4.28×10?7 和 731.26×10?7 mol/L,此濃度遠高于黃鐵礦或石英非氧化溶解時相應的濃度.因此,礦物晶體體缺陷中的成礦流體對硫化礦浮選溶液化學具有重要貢獻,這將有助于深入認識硫化礦浮選的本質.
이모일전형Cu?Pb?Zn?Fe류화광광상중적황철광화석영위연구대상,대기정체중적체결함특정진행연구.결과표명:천연황철광화석영정체중존재대량체결함,저사체결함정현각충형태,포괄장조형、타원형화불규칙형상,대소종궤미미도근백미미불등.유우체결함재형성과정중능포획성광류체화광화류체,인차,함유대량성광원소.수용액적다충금속화비금속화학성분분석급 EDS 분석결과표명,재마광적과정중,광물중체결함장파렬혹단렬,향용액중석방기중적화학성분.재마광세도위d90=37μm,함10 g황철광적40 mL청세용액중, Cu, Pb, Zn, Fe, Ca, Mg화Cl?적농도분별체도32.09×10?7、16.51×10?7、19.45×10?7、516.52×10?7、129.50×10?7、 35.30×10?7화 433.80×10?7 mol/L;함석영적청세수용액중상술리자적농도분별체도 19.20×10?7、8.88×10?7、8.31×10?7、82.71×10?7、16.21×10?7、4.28×10?7 화 731.26×10?7 mol/L,차농도원고우황철광혹석영비양화용해시상응적농도.인차,광물정체체결함중적성광류체대류화광부선용액화학구유중요공헌,저장유조우심입인식류화광부선적본질.
The volume defects in pure pyrite and quartz from a classical Cu?Pb?Zn?Fe sulfide deposit were investigated. The results indicate that a large number of volume defects exist in natural pyrite and quartz. The volume defects assume a variety of shapes, including long strips, oval shapes and irregular shapes, with sizes ranging from a few microns to dozens of microns. These volume defects are rich in metallogenic elements as a result of the capture of metallogenic and mineralizing fluid during the defect-forming process. The volume defects are fractured during the grinding process, and their chemical components are released into the solution, as confirmed by the abundant presence of various metal and non-metal components in the cleaning water and EDS results. Under the experimental conditions of 10 g pyrite or quartz with grinding fineness ofd90=37μm, which was cleaned in 40 mL of pure deionised water under an inert atmosphere, the total average concentrations of Cu, Pb, Zn, Fe, Ca, Mg and Cl? in the aqueous solution are 32.09×10?7, 16.51×10?7, 19.45×10?7, 516.52×10?7, 129.50×10?7, 35.30×10?7 and 433.80×10?7 mol/L, respectively, for pyrite and 19.20×10?7, 8.88×10?7, 8.31×10?7, 82.71×10?7, 16.21×10?7, 4.28×10?7 and 731.26×10?7 mol/L, respectively, for quartz. These values are significantly greater than those from the experimental non-oxidative dissolution of the pyrite or quartz, respectively. Therefore, the metallogenic fluid in volume defects of mineral crystal is concluded to represent the dominant contribution to the solution chemistry of sulfide flotation pulp. The present investigation will help to deeply understand the flotation theory of sulfide minerals.
