METALLOGENICCHARACTERISTICSANDORE－P

ＭＥＴＡＬＬＯＧＥＮＩＣＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＡＮＤＯＲＥ－ＰＲＯＳＰＥＣＴＩＮＧＦＵＴＵＲＥＯＦＰＲＥ－ＣＡＭＢＲＩＡＮＧＯＬＤＤＥＰＯＳＩＴＳＩＮＭＵＦＵ－ＪＩＵＬＩＮＧＤＩＳＴＲＩＣＴＷｕＹａｎｚｈｉ（ＤｅｐａｒｔｍｅｎｔｏｆＧｅｏｌｏ...     

ISOTHERMAL KINETICS OF THE FIRST STAGE REDUCTION OF MAGNETITE COLD BOND PELLETS WITH CARBON MONOXIDE

ＩＳＯＴＨＥＲＭＡＬＫＩＮＥＴＩＣＳＯＦＴＨＥＦＩＲＳＴＳＴＡＧＥＲＥＤＵＣＴＩＯＮＯＦＭＡＧＮＥＴＩＴＥＣＯＬＤＢＯＮＤＰＥＬＬＥＴＳＷＩＴＨＣＡＲＢＯＮＭＯＮＯＸＩＤＥ＊ＣｈｅｎＱｉｙｕａｎＺｈｏｕＨｏｎｇＺｈａｎｇＰｉｎｇｍｉｎ（Ｄｅｐａｒｔｍ...     

DETERMINATION OF THE ENTROPY CHANGE FOR ELECTRODE REACTION AND DILUTE ENTHALPY OF SOME IONS BY THERMO-ELETROCHEMICAL TECHNOLOGY

ＤＥＴＥＲＭＩＮＡＴＩＯＮＯＦＴＨＥＥＮＴＲＯＰＹＣＨＡＮＧＥＦＯＲＥＬＥＣＴＲＯＤＥＲＥＡＣＴＩＯＮＡＮＤＤＩＬＵＴＥＥＮＴＨＡＬＰＹＯＦＳＯＭＥＩＯＮＳＢＹＴＨＥＲＭＯ－ＥＬＥＴＲＯＣＨＥＭＩＣＡＬＴＥＣＨＮＯＬＯＧＹ＊ＦａｎｇＺｈｅｎｇＧｕｏＬ...     

CAUSTIC DECOMPOSITION OF SCHEELITE AND SCHEELITE－WOLFRAMITE CONCENTRATES THROUGH MECHANICAL ACTIVATION

ＣＡＵＳＴＩＣＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＳＣＨＥＥＬＩＴＥＡＮＤＳＣＨＥＥＬＩＴＥ－ＷＯＬＦＲＡＭＩＴＥＣＯＮＣＥＮＴＲＡＴＥＳＴＨＲＯＵＧＨＭＥＣＨＡＮＩＣＡＬＡＣＴＩＶＡＴＩＯＮＬｉＨｏｎｇｇｕｉ；ＬｉｕＭａｏｓｈｅｎｇ；ＳｕｎＰｅｉｍｅｉ；...     

KINETIC STUDY ON THE REMOVAL OF LEAD AND SILVERFROMCRUDEBISMUTHBYANODEREFINING

ＫＩＮＥＴＩＣＳＴＵＤＹＯＮＴＨＥＲＥＭＯＶＡＬＯＦＬＥＡＤＡＮＤＳＩＬＶＥＲＦＲＯＭＣＲＵＤＥＢＩＳＭＵＴＨＢＹＡＮＯＤＥＲＥＦＩＮＩＮＧＫＩＮＥＴＩＣＳＴＵＤＹＯＮＴＨＥＲＥＭＯＶＡＬＯＦＬＥＡＤＡＮＤＳＩＬＶＥＲＦＲＯＭＣＲＵＤＥＢＩＳＭＵＴＨ...     

THERMODYNAMIC PROPERTIES OF AQUEOUS ALUMINATE ION, Al (OH)_4~- (aq)

ＴＨＥＲＭＯＤＹＮＡＭＩＣＰＲＯＰＥＲＴＩＥＳＯＦＡＱＵＥＯＵＳＡＬＵＭＩＮＡＴＥＩＯＮ，Ａｌ（ＯＨ）＿４￣－（ａｑ）ＴＨＥＲＭＯＤＹＮＡＭＩＣＰＲＯＰＥＲＴＩＥＳＯＦＡＱＵＥＯＵＳＡＬＵＭＩＮＡＴＥＩＯＮ，Ａｌ（ＯＨ）＿４￣－（ａｑ）￥ＣｈｅｎＱｉ...     

SODA DECOMPOSITION OF LOW－GRADE TUNGSTEN ORE THROUGH MECHANICAL ACTIVATION

ＳＯＤＡＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＬＯＷ－ＧＲＡＤＥＴＵＮＧＳＴＥＮＯＲＥＴＨＲＯＵＧＨＭＥＣＨＡＮＩＣＡＬＡＣＴＩＶＡＴＩＯＮＺｈａｏＺｈｏｎｇｗｅｉＬｉＨｏｎｇｇｕｉＬｉｕＭａｏｓｈｅｎｇＳｕｎＰｅｉｍｅｉＬｉＹｕｎｊｉａｏ（Ｄｅｐａｒｔｍ...     

THE METALLOGENIC STRUCTURE OF VEIN-SHAPED LEAD-ZINCDEPOSIT IN HENGSHANLING-SHEXINGPING,CHENZHOU,HUNAN

ＴＨＥＭＥＴＡＬＬＯＧＥＮＩＣＳＴＲＵＣＴＵＲＥＯＦＶＥＩＮ－ＳＨＡＰＥＤＬＥＡＤ－ＺＩＮＣＤＥＰＯＳＩＴＩＮＨＥＮＧＳＨＡＮＬＩＮＧ－ＳＨＥＸＩＮＧＰＩＮＧ，ＣＨＥＮＺＨＯＵ，ＨＵＮＡＮＳｕｎＺｈｅｎｇｉａＰｅｎｇＥｎｓｈｅｎｇＺｈｕＹｕｄｅ（Ｄｅ...     

FAULT DIAGNOSIS OF HYDRAULIC PUMPS USING IMPROVED NEURAL NETWORK~

ＦＡＵＬＴＤＩＡＧＮＯＳＩＳＯＦＨＹＤＲＡＵＬＩＣＰＵＭＰＳＵＳＩＮＧＩＭＰＲＯＶＥＤＮＥＵＲＡＬＮＥＴＷＯＲＫ~＋￥ＹａｎｇＨｏｎｇｚｈｉ；ＴａｎＧｕａｎｚｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｕｔｏｍａｔｉｃＣｏｎｔｒｏｌＥｎｇｉｎｅｅｒｉｎｇ，Ｃ?..     

SINGLE CRYSTAL GROWTH OF Cu BASED SHAPE MEMORYALLOYANDITSTHERMODYNAMICANALYSIS

ＳＩＮＧＬＥＣＲＹＳＴＡＬＧＲＯＷＴＨＯＦＣｕＢＡＳＥＤＳＨＡＰＥＭＥＭＯＲＹＡＬＬＯＹＡＮＤＩＴＳＴＨＥＲＭＯＤＹＮＡＭＩＣＡＮＡＬＹＳＩＳＳＩＮＧＬＥＣＲＹＳＴＡＬＧＲＯＷＴＨＯＦＣｕＢＡＳＥＤＳＨＡＰＥＭＥＭＯＲＹＡＬＬＯＹＡＮＤＩＴＳＴＨＥＲ...     

Froth flotation of scheelite – A review

Froth flotation of scheelite has regained new focus since the 2010s and research regarding floatability and reagents has made great progress over the years. The main objective was and remains the selective flotation of scheelite from other calcium-bearing minerals, in particular calcite, fluorite and apatite. Due to similar properties, most attempts have limited success or only specific application(linked to a type of ore or a location). This article aims at reviewing all general physical-chemical information on froth flotation of scheelite, including electrokinetic properties, influence of p H and already existing reagents as well as ones still under examination. It appears that chelating or mixed collectors and modified versions of sodium silicate and quebracho hold great promise for scheelite flotation, while the use of said depressants and/or promoters seems inevitable.     

(Ba,Sr)WO4薄膜室温电化学制备

采用恒电流技术，在室温条件下，金属钨片上制备了白钨矿结构的BaSrWO4晶态薄膜，电化学反应的工艺条件：电流密度为1mA/cm^3、电解液的pH值为12.5；电化学处理时间为1.5h；XRD，XPS,SEM分析结果表明，制备的（Ba,Sr)WO4薄膜为表面均匀致密的四方晶系单相薄膜。     

Rheological investigations of the improved fine scheelite flotation spiked with agitation mediumOA

The fine scheelite flotation using garnet and glass beads as agitation medium was investigated through slurry rheology and froth property analysis. The apparent viscosity of fine scheelite, calcite and quartz(-20 μm) slurry were measured and the corresponding scheelite flotation behaviours, froth water recovery and froth height were studied. It was found that calcite slurry could aggregate into network structures and exhibit much higher apparent viscosity at the vicinity of pH 8.5–9.0 than schee...     

不同晶体结构的BiVO4的制备及其可见光催化性能

采用水热的方法,通过调控pH值,制备了具有不同晶型和晶体形貌的BiVO4晶体．利用XRD、SEM、XPS和UV—VIS对样品进行了表征．结果表明,在pH值等于1时,生成的是2—5μm的单斜白钨矿结构的BiVO4四方块;pH值等于7时生成的是0．2—1μm的单斜白钨矿结构的BiVO4纳米片;pH值等于12时,得到的是1—10μm的单斜四面体结构的BiVO4纳米带．可见光降解酸性橙II的催化活性测试表明,白钨矿结构的BiVO4的活性高于单斜四面体结构的BiVO4;而pH值等于7制备的BiVO4则表现了最高的催化活性．     

电化学沉积技术制备白钨矿结构钼酸盐薄膜

采用恒电流技术于室温条件下直接在金属钼片上制备了白钨矿结构的钼酸盐，包括SrMoO4，BaMoO4和Ba1-xSrxMoO4(0≤x≤1）等薄膜，控制电化学反应的工艺条件为：电流密度为1mA/cm^2；电解液的pH值为13；电化学处理时间为1h。SEM,XRD和XPS分析结果表明，制备的钼酸盐薄膜均为表面均匀致密的四方晶系单相薄膜。     

一种基于混沌的AES算法的研究

AES算法越来越多地应用到各个领域,是加密方法发展的新趋势．描述了AES加密算法,重点是对AES算法进行了改进,即用Logistic映射生成的混沌序列作为AES加密方法的初始密钥．最后用C＋＋语言实现了混沌和AES结合的新算法并与原始AES算法进行了速度对比．     

钾钠氟在烧结过程中的行为

通过烧结中断试验，研究了包钢烧结过程中钾、钠、氟的行为：原矿中的微斜长石，霓石和萤石分别形成了钾霞石、三斜霞石和枪晶石，并存于烧结矿中；同时还发现烧结过程中产生了少量钾、钠、氟的挥发物，并为湿料带所吸附，而在烧结饼上部产生了区域净化现象。因此，为减少钾、钠、氟对高炉冶炼的危害，需要把烧结矿烧好烧透。     

广西珊瑚钨锡矿床原生地球化学分带及其找矿意义

珊瑚矿区钨锡矿床成矿地球化学作用多期多阶段的特点,突出表现为平面上的顺向分带。以热液源为中心,向北西依次产出钨锡石英脉矿床、钨锑萤石石英脉矿床和含钨角砾石英脉矿床。气成热液地球化学作用导致钨锡石英脉矿床垂向上表现为逆向分带,W、Sn、F等成为矿体前缘指示元素,而Cu、Pb、Zn等成为矿体中下部指示元素。     

淀粉酶的性质和分类

淀粉酶是能催化淀粉水解转化的一群酶的总称.在食品工业和淀粉糖工业中被广泛利用,国内外对淀粉酶的研究已取得很大的进展.本文着重对淀粉酶的性质和分类进行综述.根据水解淀粉分子的糖苷键的类型,提出将淀粉酶分成三类,即仅作用于1,4-α-D一葡糖苷键的淀粉酶:仅用作于1,6-α-D-葡糖苷键的淀粉酶;作用于1,4-α-D-葡糖苷键又作用于1,6——α—D-葡糖苷键的淀粉酶.