浮选试验条件对粉煤灰脱炭的影响

贵州是煤炭资源大省，作为本省的主要能源，煤炭和电力一直扮有重要角色，随着“西电东送”工程的实施，煤炭的大量利用以及电厂装机的大幅增加，导致粉煤灰的排放量急剧增加，严重污染了当地的环境，因此，对粉煤灰的利用显得迫切。对贵州某地粉煤灰进行测定的基础上，进行了浮选条件试验，并对浮选产品进行扫描电镜、X射线衍射分析，通过对粉煤灰浮选试验进行单因素考察，发现浮选浓度、浮选药剂用量是分选效果最重要的影响因素，浮选效果是浮选产品利用的关键。     

太阳能电源在无人值守地震台的应用

根据无人值守地震台供电的特点，采用太阳能供电方案。引入最长连续阴雨天之间的最短间隔天数作为设计的依据之一，并综合考虑了各种影响太阳能辐射条件的因素，根据理论公式计算出蓄电池容量和太阳能电池板选配方式，最后给出了一组应用实例。     

Estimating the recovery of size-liberation classes in industrial flotation cells: A simple technique for minimizing the propagation of the experimental error

A simple technique, based upon interpolation and mass balancing, is proposed for minimizing the error propagation in the estimation of the flotation recovery of size-liberation particle classes. Liberation data obtained by a down-the-bank survey is used to illustrate application to industrial cells.     

中国萤石矿床成矿规律

在萤石矿床类型划分的基础上,根据萤石矿床的大地构造背景、分布特征、成矿条件和控矿因素,文章划分了中国萤石矿床的成矿区带,并对每一个成矿区带的成矿特征做了简述;总结了中国萤石矿床成矿规律。中国萤石矿床集中分布于北部和东南部,断裂是各种矿床类型共有的必要成矿要素。沉积改造型萤石矿床的形成与灰岩和火山岩有关;与萤石矿床形成有关的侵入岩绝大部分为燕山期侵入岩;无论是沉积改造型、热液充填型还是伴生型萤石矿床,大型、特大型萤石矿床的形成多与灰岩有关。同时具备灰岩、燕山期侵入岩和断裂成矿三要素的矿床多为大型、特大型萤石矿床。中国萤石矿床的形成集中于燕山期。     

基于资源三号卫星影像的极地1∶50000无地面控制成图技术研究

利用国产自主研发的立体测图卫星资源三号卫星遥感影像,采用无地面控制区域网平差方法,试生产极地地区1∶50 000 3D(DLG,DEM,DOM)地理信息产品.通过试生产提出极地1∶50 000比例尺数据成图技术流程图,并对其数据处理过程中的关键技术进行研究和分析,提出相关的技术要求.     

江西××胶磷矿选矿试验研究

针对江西× ×难选胶磷矿,采用单一正浮选工艺进行试验.试验对各主要影响因素逐一研究分析,获得了最佳药剂制度,并在此基础上有针对性的进行了三组闭路试验,均获得了较满意的选别指标,满足了选矿厂的不同需求.研究结果为该胶磷矿的开发利用提供了技术支持.     

浙江八面山新型萤石矿床矿石类型

浙江八面山萤石矿床有4个成矿期次,第2次为蚀变作用,其它三次为热液作用.第1次成矿作用形成的矿石有7大类型,色深(黑灰、深灰)、普遍含碳泥质、金属矿物和粘土矿物出现概率较高.第2次成矿作用形成的矿石有两种,色浅(绿灰、灰白)、符山石和斜长石含量较高、不合金属矿物和碳泥质.第3次成矿作用仅形成了黑灰、黑色铁质含量高的纹层...     

无卷扬机液压缸升降式钻机

目前,液压动力头岩心钻机大多采用液压缸给进,液压卷扬机提升。近年来,国外多个国家以液压技术见长的公司,研发了无卷扬机液压缸升降式钻机,它与传统钻机设计理念不同,液压缸不单是给进机构也作为提升机构。这种钻机取消了结构复杂而笨重的卷扬机、天车、游动滑车组。液压缸提升系统井架不承受提升载荷,井架尺寸小,轻便;整个设备体积小、质量轻、成本低、技术经济指标先进。它为研发液压动力头钻机提供了一种新机型。介绍了瑞典山特维克浅钻和挪威MH公司RamRig深孔钻机的结构和其他一些国家研发和应用情况。阐述了双液压缸提升和液压缸-钢丝绳倍速机构两种不同系统的工作原理及应用特点。     

Mineralogy and geochemistry of Nb-, Ta-, Sn-, U-, Th-, and Zr-bearing granitic rocks from Abu Rusheid shear zones,South Eastern Desert,Egypt

Granite-hosted,Nb-,Ta-,Sn-,U-,Th-,and Zr(Hf)-bearing mineralization from the Abu Rusheid shear zones occurs about 97 km southwest of the town of Marsa Alam,South Eastern Desert,Egypt.The SSE-trending brittle-ductile Abu Rusheid shear zones crosscut the peralkalic granitic gneisses and cataclastic to mylonitic rocks(mylonite,protomlyonite,and ultramylonite).The northern shear zone varies in width from 1 to 3 m with a strike length of >500 m,and the southern shear zone is 0.5 to 8 m wide and >1 km long.These shear zones locally host less altered lamprophyre and locally sheared granitic aplite-pegmatite dykes.The rare-metal minerals,identified from the peralkalic granitic gneisses and cataclastic to mylonitic rocks are associated with muscovite,chlorite,quartz,fluorite,pyrite,magnetite,and rare biotite that are restricted to the Abu Rusheid shear zones;these are columbite-tantalite and pyrochlore(var.betafite) in the northern shear zone and ferrocolumbite in the southern shear zone.Cassiterite occurs as inclusions in the columbite-tantalite minerals.U-and Th-minerals(uraninite,thorite,uranothorite,ishikawaite,and cheralite) and Hf-rich zircon coexist.Magmatic(?) zircon contains numerous inclusions of rutile,fluorite,U-Th and REE minerals,such as uranothorite,cheralite,monazite,and xenotime.Compositional variations in Ta/(Ta+Nb) and Mn/(Mn+Fe) in columbite range from 0.07-0.42 and 0.04-0.33,respectively,and Hf contents in zircon from 1.92-6.46 of the two mineralized shear zones reflect the extreme degree of magmatic fractionation.Four samples of peralkalic granitic gneisses and cataclastic to mylonitic rocks from the southern shear zone have very low TiO2(0.02 wt%-0.04 wt%),Sr [(15-20)×10-6],and Ba [(47-78)×10-6],with high Fe2O3T(0.94 wt%-1.99 wt%),CaO(0.14 wt%-1.16 wt%),alkalis(9.2 wt%-10.1 wt%),Rb [(369-805)×10-6],Zr [(1033-2261)×10-6],Nb [(371-913)×10-6],U [(51-108)×10-6],Th [(36-110)×10-6],Ta [(38-108)×10-6],Pb [(39-364)×10-6],Zn [(21-424)×10-6],Y [(8-304)×10-6],Hf [(29-157)×10-6],and ∑REE [(64-304)×10-6],especially HREE [(46-167)×10-6].Three samples from the northern shear zone also have very low TiO2(0.03 wt%),Sr [(11-16)×10-6],and Ba [(38-47)×10-6],with high Fe2O3T(1.97 wt%-2.91 wt%),CaO(0.49 wt%-1.01 wt%),alkalis(7.2 wt%-8.3 wt%),Rb [(932-978)×10-6],Zr [(1707-1953)×10-6],Nb [(853-981)×10-6],Ta [(100-112)×10-6],U [(120-752)×10-6],Th [(121-164)×10-6],Pb [(260-2198)×10-6],Zn [(483-1140)×10-6],Y [(8-304)×10-6],Hf [(67-106)×10-6],and ∑REE [(110-231)×10-6],especially HREE [(91-177)×10-6].The very high Rb/Sr(57.5-88.9),and low Zr/Hf(16.9-25.6),Nb/Ta(7.7-9.8),and Th/U(0.21-1.01) are consistent with very frac-tionated fluorine-bearing granitic rocks that were altered and sheared.The field evidence,textural relations,and compositions of the ore minerals suggest that the main mineralizing event was magmatic(629+/-5 Ma,CHIME monazite),with later hydrothermal alteration and local remobilization of the high-field-strength elements.