湖北省宜昌市城区水热型地热资源赋存的地质特征及其开发利用意义初探

宜昌市城区东部发现优质地下热水资源。热储为奥陶系下统红花园组—寒武系下统天河板组云岩和云质灰岩,埋深1 500 m左右,总厚度 750 m。经连续抽水试验,单井可采水量≥500 m3/d,水温48～49℃,水化学类型为SO_4、Cl-Ca、Na型低矿化水(淡咸水)。水中锶含量10. 52 mg/L,偏硅酸含量34. 18mg/L,氟含量3. 68 mg/L,属水质、水温均较好的理疗热矿水水源地,具有广阔的开发利用前景。     

湖北某地矿泉水降氟实验研究

湖北某地矿泉水,是一种偏碱性,高温,氡、氟、锶、硫酸盐、偏硅酸含量达到或接近医疗矿泉水命名浓度的复合型医疗矿泉水。但氟和锶超过国标GB8537-1995《饮用天然矿泉水》限量指标。本文仅介绍该矿泉水的降氟试验,笔者采用JH—1型滤料的降氟装置,可将该地2号泉矿泉水的氟含量降至国标限量指标2。0mg／L以下,降氟水清澈透明,仍保持了原复合型医疗矿泉水的结构特点。利用膨润土研制的JH－1型滤料属国内首创。     

新塍古镇成功钻探一优质地热井

<正>由浙江省地调院勘查、设计、监理的嘉兴市新塍镇新热2号井不久前经抽水试验,涌水量达554m3/天,井口水温38℃。同时水质分析显示:氟离子含量5.8mg/L,达到命名矿水浓度;二氧化碳382mg/L,锂含量1.55mg/L,偏硅酸含量33mg/L,达到矿水浓度;溶解性总固体2870mg/L,可命名为氟热矿水。据了解,该项目为浙江省国土资源厅2013年下达的"嘉兴市桐乡-秀洲地区地热资源勘查"项目。     

浸铀过程中氧化硫硫杆菌的耐氟性试验研究

铀矿石中常含有较高的氟含量,在浸铀过程中矿石中的氟会进入菌液中。氟离子是抑制氧化硫硫杆菌生长和影响氧化硫硫杆菌产酸能力的重要因素。试验表明,当氟离子浓度小于16 mg/L时,氧化硫硫杆菌4 d内生长发育良好;当氟离子浓度达到30 mg/L时,其生长发育时间超过15 d。当菌液中氟离子浓度小于8 mg/L时,对氧化硫硫杆菌产酸能力影响很小;当氟离子浓度大于16 mg/L时,对氧化硫硫杆菌产酸能力影响较大。氧化硫硫杆菌的耐氟能力可以通过驯化提高,驯化后浸铀氧化硫硫杆菌适应氟浓度能力可达40 mg/L。     

云南昭通氟中毒区煤、土和水中氟的含量与分布

为探讨云南昭通氟中毒地区环境中氟的含量和分布规律以及氟的来源,在昭通镇雄和威信地区采集了160个煤、黄铁矿结核、煤矸石、黏土、玉米、辣椒、饮用水样品,用高温水解-氟离子选择电极法对样品中的氟进行了分析.结果表明：云南昭通氟中毒区晚二叠世龙潭组主采煤层C5煤含氟量低,平均含氟量为77.13 mg/kg;3个典型氟中毒病区民用煤的平均含氟量为72.56 mg/kg,稍低于中国煤炭平均含氟量〖BF〗（82 mg/kg）, 与世界煤的平均值（80 mg/kg）〖BFQ〗接近.中毒区的煤主要为低氟煤,煤中的氟与灰分关系较为密切.中毒区的拌煤黏土中氟含量一般在367～2 435 mg/kg, 但以含氟量超过600 mg/kg的高氟拌煤黏土为主,平均含氟量为1 084.2 mg/kg.氟中毒区饮用水的含氟量一般低于0.35 mg/L,低于国家饮用水的要求(1.0 mg/L).     

江西龙南矿泉水特征及开发利用价值述评

本文介绍了江西龙南汤湖氡锂锶偏硅酸饮用天然矿泉水、豆头锂锶偏硅酸饮用天然矿泉水、杨梅坑锶饮用天然矿泉水产出的地质特征、水质特征及赋存条件,重点评述了三处矿泉水的医学作用,进而肯定了共开发利用的价值。     

火焰原子吸收光谱法测定钛精矿中氧化钙和氧化镁的含量

以分析纯盐酸、氢氟酸、高氯酸为酸熔剂热分解钛精矿试样,用6 mol/L盐酸浸取,以氯化锶作释放剂,控制溶液酸度为(3+97),实现钛的水解和干扰元素的分离。定容后,采用火焰原子吸收光谱法测定氧化钙和氧化镁的含量。通过条件试验确定了测定溶液中浸取盐酸浓度为0.036 mol/L、锶含量5 mg/m L,加标回收结果良好,精密度满足要求。火焰原子吸收光谱法可以作为钛精矿中氧化钙和氧化镁含量的测定方法,已被纳入冶金行业标准。     

澄海莲花山热矿水形成条件和水质特征

阐述了澄海莲花山热矿水形成的主要条件和影响水质的因素。该热矿水水温50℃以上，含对人体健康有益的多种微量元素，如偏硅酸、氟、锶、溴和氡气等。据多年观测，水温、水质、水量均稳定，很有开发利用价值。     

福建省饮用水氟最高浓度的研究

分析了氟的毒理作用和人体的需氟总量,介绍了福建省氟中毒的分布情况,并从主要携带介质氟含量和患病率之间的关系研究,推荐福建省(年平均气温为19.6℃)成人每天摄入氟总量不超过3.0mg,饮用水氟浓度不超过0.6mg/L.     

湖北省饮用天然矿泉水成因类型及成矿模式分析

湖北省饮用天然矿泉水分为含锶型、含偏硅酸型、含锶—偏硅酸复合型、含硒型、含硒—锶复合型等五种类型。根据省内矿泉水形成的地质构造条件、地球化学条件及地下水水动力条件等,划分为三种成因类型:断裂深循环型、裂隙浅循环型、层间缓慢径流型,并分析了矿泉水的形成机理。在此基础上,提出六种矿泉水形成的典型成矿模式。     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。