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新华戈仲伍组含稀土磷块岩矿石性质研究 总被引:6,自引:0,他引:6
对织金新华磷矿戈仲伍组磷块岩矿石特性及稀土赋存状态的研究表明:矿石P2O5品位最高为31.09%,平均为17.51%;随P2O5品位的逐渐降低,MgO和SiO2的品位有逐渐增加的趋势。矿石中稀土含量为REO 0.05%~0.13%,其中Y2O30.07%~0.045%;稀土主要以钇(Y2O3)、镧(La2O3)、钕(Nd2O3)、铈(CeO2)4种元素为主,占稀土总量平均为81.20%;其中稀土钇(Y2O3)占稀土总量平均为32.18%。稀土与磷成正相关关系,稀土总量与磷含量的相关系数为0.94177,钇含量与磷含量的相关系数为0.95874。胶磷矿单体矿物中存在稀土的独立矿物如方铈石和独居石,但稀土的独立矿物数量极微,没有发现稀土钇的独立矿物,稀土及稀土钇主要以类质同象形式赋存于胶磷矿中,这种结构导致稀土极不易从磷矿中单独选取。矿石中主要有价矿物是胶磷矿和磷灰石,脉石矿物主要是白云石,其次是方解石、石英等,且矿物之间呈细粒均匀嵌布,一般粒度为0.05~0.1 mm,矿石必须细磨,属于难选矿石。 相似文献
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《稀土》2016,(6)
为了有效利用某铁尾矿中的低品位稀土资源,对该尾矿中稀土元素的赋存状态进行了相关研究。主要通过全岩地球化学分析、镜下观察、电子探针测试(EPMA)及矿物解离度分析(MLA),查明了此尾矿中稀土元素的赋存状态。其主要特征为70.06%的稀土主要富集在独居石中,26.6%的稀土以类质同象的形式存在于磷灰石中;独居石嵌布粒度细小,单体含量低;磷灰石嵌布粒度粗大,单体含量很高;大约有29.2%的独居石与磷灰石连生,因此为了提高稀土回收率,可生产磷灰石精矿和独居石-磷灰石混合精矿。该含稀土尾矿的性质表明,采用单一选矿工艺很难获得合格的稀土精矿,需采用"混浮-磁选"联合工艺流程处理该矿石。 相似文献
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六、七十年代,国内:对磷矿进行普查和评价时发现某些磷矿中含有稀土、铀、钒等有用元素。贵州省某磷矿储量巨大,稀土含量平均为0.1%。所以贵州省科委组织了贵州省冶金研究所、化工研究所、地质局实验室等单位先后对该矿的地质、物相,磷和稀土的富集开展丁试验工作。 地质局实验室的物相工作认为,由于稀土的离子半径与钙离子半径相近。所以稀土元素在磷块岩沉积过程中,以离子交换形式置换了钙,呈类质同象存在于胶磷矿中。胶磷矿中稀土含量达1.84%。另外,一在采用反 相似文献
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分析了矿石中稀土的赋存状态主要有矿物相、离子吸附相、胶态沉积相、类质同象与微固体分散相四种,解释了赋存机理及各相态稀土与矿石稀土品位的关系,得出前三种相态可形成具有工业利用价值的稀土矿床。矿物相稀土可用机械分选富集,离子吸附相和胶态沉积相分别用盐类离子交换和盐酸化学浸出提取。 相似文献
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《稀土》2016,(2)
为证实贵州织金磷矿床中存在类似中国南方花岗岩风化壳离子吸附型存在形式的稀土,首先分析和确定了风化磷矿石的矿物组成主要为胶磷矿和白云石,以及含不足5%的黏土矿物和其它次要矿物,稀土总量介于1200×10~(-6)~1700×10~(-6)之间,Y、La、Nd和Ce四元素占稀土总量的82%以上的稀土配分特征,然后利用硫酸铵溶液对采自矿区地表的风化磷矿进行浸泡后过滤,再利用ICP-MS法对过滤液进行了稀土全分析。结果滤液中各稀土组分都显示一定的含量,稀土总量平均值为3.313μg/m L,其中浸出的稀土以Tm、Eu、Er、Ho和Dy为主,占90%以上,可见浸出的稀土与原矿中稀土组分的含量高低无关,表明织金磷矿床中存在以中、重稀土为主的离子吸附型稀土,但所占比例小,远低于类质同象存在形式的稀土。离子吸附型稀土的成因与漫长时限的风化作用导致稀土从矿物晶格中解离出来以及黏土矿物等所起的吸附载体作用密切相关。 相似文献
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五星铂钯铜镍矿床位于敦密断裂南东侧的兴凯地体内,矿床内不仅含有铜镍钴矿体,同时含有贵金属铂钯矿体。通过对铂钯元素在岩石、矿石及矿体中的物相分配、赋存规律的研究,发现矿体中贵金属钯铂主要以2种形式赋存,即矿物相及类质同像,且类质同像又分为硫化物中的类质同像、造岩矿物及氧化物中的类质同像。研究表明,钯铂主要以矿物相存在,硫化物中的类质同像次之,造岩矿物及氧化物中类质同像的赋存形式较少。 相似文献
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The minutes presented in this article are the official record of the actions of the Association taken during the year by both the Board of Directors (Board) and the Council of Representatives (Council). The minutes consist of: Elections, Awards, Membership, and Human Resources; Ethics; Board of Directors; Divisions and State, Provincial, and Territorial Associations; Organization of the APA; Publications and Communications; Convention Affairs; Educational, Professional, Ethnic Minority, International, Financial, and Scientific Affairs; Public Interest; and Central Office. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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S Shapiro 《Canadian Metallurgical Quarterly》1976,66(11):1050-1051
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Presents the minutes representing the official record of the actions of the American Psychological Association (APA) taken during 1993 by both the Board of Directors and the Council of Representatives. The report addresses action taken in the areas of elections, appointments, awards, membership, and human resources. Membership information includes lists of persons elected to initial membership in the APA in 1993, members who died in 1993, members who resigned in 1993, members who were reinstated during 1993, and members elected to initial APA fellowship status effective as of January 1, 1994. The report also discusses action in the areas of ethics, Board of Directors, divisions and state and provincial associations, organization of the APA, convention affairs, educational affairs, professional affairs, scientific affairs, public interest, Central Office, financial affairs, and communications concerning outside organizations. (0 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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These minutes are the official record of the actions of the Association taken during the year by both the Board of Directors (the Board) and the Council of Representatives (Council). The roll of representatives was called at each Council meeting, and more than a quorum answered to their names. Reference is made in these minutes to various reports, some of which will be published elsewhere. Copies of these reports were distributed to Council and are on file in the Central Office. As long as the supply lasts, extra copies of many of the reports are available from the Central Office. These minutes are arranged in topical rather than chronological order, and subheadings are used when appropriate. The main topical headings are I. Minutes of Meetings; II. Elections, Awards, Membership, and Human Resources; III. Ethics; IV. Board of Directors; V. Divisions and State and Provincial Associations; VI. Organization of the APA; VII. Publications and Communications; VIII. Convention Affairs; IX. Educational Affairs; X. Professional Affairs; XI. Scientific Affairs; XII. Public Interest; XIII. Ethnic Minority Affairs; XIV. International Affairs; XV. Central Office; and XVI. Financial Affairs. Changes to the language of the American Psychological Association (APA) Bylaws, Association Rules, or motions of the items are noted as follows throughout these proceedings: Bracketed material is to be deleted; underlined material is to be added. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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No authorship indicated 《Canadian Metallurgical Quarterly》1997,52(8):813
Reports minutes representing the official record of the actions of the American Psychological Association (APA) taken during 1996 by both the Board of Directors and the Council of Representatives. The Board held 6 official meetings, discussing issues related to the following topics: (1) minutes of previous meetings, (2) elections, awards, membership, and human resources, (3) ethics, (4) the Board of Directors, (5) divisions and state and provincial associations, (6) the APA organization, (7) publications and communications, (8) convention affairs, (9) educational issues, (10) professional affairs, (11) scientific affairs, (12) public interest, (13) ethnic minority affairs, (14) international affairs, (15) the Central Office, and (16) financial affairs. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Between January 1st 1992 and December 31st 1993 140 non-complex (i.e. nerve, vascular, tendon injuries) fractures of the peripheral hand skeleton were operated at the Policlinic of the Kantonsspital Basel. In a retrospective study we analyzed results, complications and absence from work. We treated 110 male and 30 female patients with a mean age of 47 years. 45 fractures were treated by plate fixation, 45 by screw fixation, 53 times we applied k-wires and once a mini-fix-ex (AO-Prototype). Plate and screw fixation were performed with AO-mini-implants. 90% of our patients had an uneventful postoperative course. In spite of functional after-treatment we noted in 8.6% of the patients a relevant loss of movement leading to operative tenolysis in 7 patients. Fractures at the level of PIP were most frequently associated with loss of movement. Absence from work was 59 days in average (1-206)! Conclusions: Peripheral osteosynthesis of the hand (non-complex) are effectively treated on an out-patient basis. In spite of functional after-treatment about 10% of patients have a relevant postoperative reduction in motility. Absence from work is relatively long after operative treatment of peripheral hand fractures. 相似文献
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Reports the minutes of the American Psychological Association (APA) for 1992, reflecting the official record of the actions of the Board of Directors and the Council of Representatives. Topics addressed include the minutes of meetings; elections, awards, membership, and human relations; ethics; the Board of Directors; divisions and state and provincial associations; organization of the APA; publications and communications; the Board of Convention affairs; educational affairs; professional affairs; scientific affairs; public interest; ethnic minority affairs; international affairs; the Central Office; financial affairs; and communications concerning outside organizations. (0 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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The experiment is described for 47 male Ss tested on their ability to judge a luminous rod held vertical while they were tilted sidewise in a chair within a dark room. "No difference was found between those scoring high or low on neuroticism, but those scoring high on extraversion were significantly less accurate than were those scoring low." (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献