谈云母的开发利用前景

当前世界上的片云母市场日趋萎缩,而碎云母的应用领域在迅速扩大。同时,世界上云母资源愈来愈紧,使得国外云母商纷纷转向中国寻求云母原料,对我国丰富的云母资源优势的开发利用带来了机遇。以往我国多出售片云母原料,效益低,碎云母的综合利用差,无疑这方面的综合开发利用潜在广阔的市场前景。     

灵寿-行唐一带碎云母矿地质特征及资源潜力分析

本文从地层、岩性、变质相、化学成分等方面对河北省灵寿-行唐一带碎云母矿床地质特征进行总结,并建立了沉积变质型碎云母矿的成矿模式。研究表明区内的上太古界湾子岩群陆源碎屑-碳酸盐岩夹基性火山岩沉积建造为碎云母矿的矿源层,沉积变质型碎云母矿床的形成经历了含矿建造的沉积、构造运动褶皱回返、区域变质作用等一系列地质过程。在此基础之上结合前人的研究成果,采用综合信息单元法圈定灵寿-行唐一带的新太古界湾子组是寻找碎云母矿床的有利层位。     

碎白云母选矿工艺研究：以霍家庄碎白云母矿为例

通过对湖北省行唐县霍家庄碎云母矿区的云母分离,提纯等方面的研究,总结出了多碎少磨勤筛的选矿方法。选矿后云母纯度高,回收率也较高。工艺流程简单实用。     

福建硬质绢云母表面化学改性的研究

采用超细粉碎和表面化学改性方法对硬质绢云母进行改性，研究表面改性的机理，建立了一整套的改性工艺，制备出应用性能和价值得到较大提高的改性硬质绢云母超细粉。     

河北鳞片云母矿的开发利用问题

河北鳞片云母矿的开发利用问题韩文华（河北省地质矿产局石家在综合地质大队）鳞片云母（碎白云母）是河北优势矿产之一。几年来，地质工作者相继在灵寿、行唐、阜平、曲阳、唐县、赤城、滦县等地发现和评价了一批鳞片云母矿产地。尤其是灵寿县境内，先后由河北省地质矿产...     

发挥优势 突出特色 科学发展——石家庄综合地质大队实现地质找矿新突破

石家庄综合地质大队成立50年以来,已发现评价35种矿产,勘查评价了400余处矿产地;提交金金属量1771Kg、铁矿1270万吨,水泥灰岩2．6亿吨等;在全国首次发现并评价了碎云母矿床,提交资源储量515万吨。多次获得优秀地质找矿奖和科技成果奖。其中河北省非金属矿产资源调查评价报告获国土资源部科技成果奖2007年度二等奖、河北省石家庄行唐县苏家庄碎云母矿区普查获国土资源部优秀找矿奖2007年度二等奖。     

河北省碎云母资源产业现状及发展前景

结合近年所做地质工作，对碎云母的资源现状、开发利用情况、加工工艺流程以及市场需求、发展前景等做了概略分析。     

行唐县苏家庄碎云母矿床地质特征

苏家庄碎云母矿区位于行唐县苏家庄村，矿体赋存于倒转复式向斜两翼的晚太古界湾子岩组一段自云母钾长片麻岩中，发现42个矿体，其中有开采利用价值的矿体19个，可为今后进一步勘查提供依据。     

赣杭构造带相山火山侵入杂岩的岩浆演化特征——来自斜长石和黑云母的化学成分研究

黑云母、斜长石等矿物可作为寄主岩石的岩浆演化的指示剂。本文借助电子探针微区分析技术,通过对赣杭构造带中相山盆地火山侵入杂岩中这些矿物的化学组成进行定量分析发现:碎斑熔岩、花岗斑岩及石英二长斑岩的斜长石环带不明显,并且主要是中长石;石英二长斑岩中黑云母矿物成分为镁质黑云母和铁质黑云母,化学成分更为接近研究区镁铁质微粒包体中黑云母的成分,而碎斑熔岩及花岗斑岩中黑云母的镁含量较低。结合黑云母、斜长石矿物的化学特征及前人的工作研究,相山碎斑熔岩和花岗斑岩的物质来源主要是壳源,没有明显地幔物质的加入,而石英二长斑岩有一定量的地幔物质的加入,并且这个地幔物质的加入发生在石英二长斑岩的黑云母开始结晶之前。     

西双版纳勐海西定破碎带蚀变岩型金矿

金矿体赋存于澜沧群惠民组上段中下部F2断层破碎带中,构造角砾岩、碎裂岩、碎斑岩是主要含金岩类.氧化矿石,金包裹于褐铁矿及绢云母中、少量自然金,属中低温破碎带蚀变岩型金矿.     

Effect of microstructure on stress–strain and pore-pressure response of sabarmati sand under the influence of mica

ABSTRACT

Micaceous soil is believed to be detrimental for civil engineering constructions due to the effect of high compressibility, low compacted density and low shear strength. Individual mica particle has numerous intact mica flakes foliated over each other making it flexible upon loading and rebound upon unloading due to its low hardness and resilient nature. Hence, micaceous soils with mica content more than 10% are considered undesirable for highway pavements, embankments and railway track constructions. When platy mica particles are sufficiently numerous to interact with spherical sand particles, bridging and ordering phenomena are augmented within the soil mass creating unique sand-mica particle orientation (MS microstructure) unlike sand-sand particle orientation (PS microstructure). The current experimental research was conducted to evaluate the variation in stress–strain, pore pressure and effective stress path response of Sabarmati sand under the influence of mica (sand with 30% mica and pure sand) with MS and PS microstructure respectively. Effect of particle crushing on stress–strain and pore pressure response was also studied on Sabarmati sand with MS and PS microstructure. Distinctive macroscopic response was observed in Sabarmati sand with MS microstructure under the influence of mica as well as mica particle crushing.     

国内外主要油(气)田水中锂提取现状及展望

油(气)田中常伴生油(气)田水,与自然界其他水体相比常具有较高的锂含量,部分可达工业品位。我国油(气)田水储量大,锂资源量可观,但在过去却长期被忽视。近年来,在盐湖卤水型液体锂资源提取技术不断取得突破的大背景下,卤水型锂资源产量占比逐年升高,油(气)田水型锂资源也应当受到重视。本文通过研究大量国内外主要油(气)田中伴生的油(气)田水锂含量及分布特征,归纳国内外油(气)田水提锂技术现状,为我国油(气)田水中锂的综合利用提供参考。     

A generalized methodology for determination of crushing strength of granular materials

Determination of crushing strength of granular material is very important for assessing its suitability in various engineering and industrial applications. Laboratory investigations that would yield stress–strain behaviour, and hence, crushing strength of the granular material are extremely cumbersome and time consuming. Also, results obtained from these experiments get influenced by the aspect ratio of the sample, its density, strain rate, size and shape of the grains etc. These difficulties can be overcome by developing a generalized mathematical model, which is primarily based on the physical properties of the granular material such as particle-size and specific gravity, for estimating its crushing strength. With this in view, experiments were conducted on different types of granular materials such as sands, cenospheres (which are found in fly ash and bottom ash) and glass beads, and the results were used for developing such a model. Details of the testing methodology adopted to achieve this are also presented in this paper and validation of the proposed model has been done based on the experimental results and the results reported in the literature.     

一种替代石棉的云母复合材料的研究

采用云母 粘土 碳酸盐三元矿物复合材料制成隔热绝缘抗静压材料，分析了其主要化学成分、矿物组成、电性能、机械性能和使用温度，并确定了合成云母复合材料及薄板的一般程序，在高温和较高压力条件下进行试验，云母复合材料是较好的隔热、绝缘和抗静压材料，可以在烧制人造金刚石制品过程中取代石棉。     

Microbial solubilization of gangue minerals and their influence on pyrite bio-oxidation

Pyrite bio-oxidation can improve the gold leaching extent of refractory gold ores, but it can also cause environmental pollution. In this work, common gangue minerals (feldspar, mica, and quartz) were studied to analyze their solubilization under industrial bio-oxidation condition and their effects on pyrite bio-oxidation. The results show that: They all have certain solubilization under bio-oxidation conditions, and the solubilization sequence is in the reduction order of feldspar, mica, quartz. They all inhibit the pyrite bio-oxidation process, and the order of inhibition is mica, quartz, and feldspar. Reasons for the inhibition include ion toxicity, pulp oppresses, passivation, and changes in microbial communities. The results of response surface analysis indicated that the interaction between feldspar and quartz was the most significant, followed by feldspar and mica, while the interaction between mica and quartz was not obvious. When the weight ratio of pyrite, feldspar, mica and quartz is 10:4:5:11, pyrite dissolves the least, while the weight ratio is 5:9:1:15, pyrite dissolves the most easily. The results provide a reference for related research and provide theoretical support and process optimization guidance for environmental protection and industrial bio-oxidation process.     

航空物探在珠海-深圳地区浅层水资源环境评价中的应用

珠海-深圳地区位于广东省南部,由于多种原因,浅层水资源遭受严重污染,淡水资源不足,致使当地人民生活用水和工农业用水比较紧张,制约着该区的经济发展.为了了解该区水资源状况,近年来应用航空综合物探(航磁、航空电磁和放射性伽马能谱)测量技术,快速有效地查明了该区海侵范围和浅层地下水的水质和淡水区的划分与分布,并对地下热水资源进行了预测,为全面了解该区水资源状况提供了可靠的基础资料,对科学地评价浅层水资源环境具有重要作用.     

评价可地浸硬岩铀矿床的主要依据

作者根据国内外进行铀矿床原地破碎浸出工业试验的研究成果，总结了判别硬岩铀矿床能否适于地浸的主要依据，内容包括矿石的破碎性能、矿石的浸出性能、矿石的渗透性及围岩的透水性。并认为只有在全面分析与主要判据有关的矿床地质因素、水文地质因素的基础上，才能从技术可行性方面分析矿床能否适于地浸。     

通辽市水资源承载能力的多层次多指标可变模糊评价研究

基于水资源承载能力概念和通辽市水资源利用基本情况,构建了水资源可承载能力评价的递阶层次指标体系.结合可变模糊集理论,建立了通辽市多层次水资源承载能力可变模糊评价模型,并对通辽市各行政区现状年和规划年的水资源承载能力进行评价.结果表明,通辽市水资源承载能力全区均较弱,产业结构不合理和水资源重复利用率低是造成水资源承载能力低的主要因素.对2020规划年的评价结果显示,节水条件下通辽市水资源承载能力有所改善,但基本仍较弱,需通过合理调整产业结构、提高水资源利用率等来提高水资源承载能力.     

侵入岩的镁铁云母化学成分特征及其地质意义

研究镁铁云母对了解原生侵入岩的地质环境有重要意义。本文拟通过原生镁铁云母化学成分及其指数图解,讨论原生岩石的地质环境。研究结果表明,镁铁云母化学成分变化受其物质来源影响,其矿物化学与成矿作用有密切联系。     

四川甲基卡X03号脉接触变质岩中Cs等稀有元素赋存状态及其综合利用建议

【研究目的】甲基卡稀有金属矿区是中国规模最大的花岗伟晶岩型稀有金属矿床富集区,X03号脉是近年来该矿区发现的以锂为主的超大型稀有金属矿床,在其围岩中发育电气石、堇青石化接触变质带,形成的蚀变岩具有Li、Rb、Cs等稀有金属矿化。Cs是重要的稀有金属元素之一,寻找更多可利用的铯资源成为当务之急。【研究方法】对钻孔岩芯中电气石角岩、堇青石化片岩等接触变质岩样品进行了稀有元素含量分析,并采用LA-ICP-MS对电气石、堇青石、黑云母、白云母等变质矿物进行了单矿物微区分析。【研究结果】接触变质岩中Li、Rb、Cs具有较高的含量,其平均值分别为0.296%、0.067%、0.052%,均达到综合利用的边界品位或最低工业品位,其特征与蚀变岩型铯云母岩矿床极其相似。Cs元素主要以类质同象的形式赋存于黑云母之中,是引起接触变质岩石Cs元素富集的主要原因。【结论】在X03号脉的进一步勘查中,应对接触变质岩石中稀有金属资源,特别是Cs资源进行评价,并对其进行综合利用。创新点：分析了X03号脉接触变质岩中Cs等稀有元素的含量,指出了Cs元素主要以类质同象的形式赋存于黑云母之中,应对其进行综合利用。