黄金矿山生产经营状况的分析与评价——数据包络分析法在黄金矿山经营状况分析中的应用

黄金矿山经营状况的好坏,直接影响黄金事业的发展和黄金资源的开发利用.客观地分析和评价黄金矿山的经营状况,有利于决策者制定适合我国国情、矿情的黄金发展战略和矿山企业经营战略.本文从矿山企业综合经济效益入手,应用数据包络分析法,选择了八个矿山,对它们的综合经营状况进行了分析和评价.一、黄金矿山经济效益的分析与评价的意义和作用矿山企业经营状况的好坏,直接关系到它的生存与发展,目前大多数国营矿山普遍感到活力不足,经营状态不佳,通过对矿山企业的综合效益的分析与评价,可以帮助矿山认识其经营活动中存在的问题,找到改进的方向,达到发挥优势,扬长避短的目的.     

黄金矿山尾矿综合回收技术进展

结合近年来国内外黄金矿山尾矿处理和利用的发展趋势,归纳总结了黄金矿山尾矿综合回收技术的进展概况,提出了黄金矿山尾矿的综合回收、提高资源利用率和节能减排的重要措施,尤其是黄金矿山尾矿中伴生的大宗非金属矿物的综合回收利用,对黄金矿山尾矿的减排和利用具有重要作用。     

中国黄金尾矿综合开发利用的现状和发展趋势

论述了中国黄金尾矿的二次资源价值和可利用性,总结了黄金尾矿综合开发利用的现状、途径,并依据黄金矿山尾矿的特点,对未来发展趋势进行了分析和预测。说明了尾矿资源回收对缓解黄金资源短缺,延长黄金矿山服务年限,将起到重要作用;综合开发利用黄金尾矿．不仅可以减少尾矿对环境的影响和危害,而且还可以获得良好的经济效益、环境效益和社会效益;提出了减量、再用、循环和复垦是矿山可持续发展,解决尾矿问题的根本出路,有助于推动中国黄金尾矿资源综合开发与利用工作的开展。     

山东黄金矿业股份有限公司新城金矿

山东黄金矿业股份有限公司新城金矿地处胶东半岛渤海湾畔，是一座具有采，选，冶综合生产能力的国家大型黄金矿山，矿山始建于1975年，历经30多年的不辍耕耘，截至2006年年末，已累计为国家生产黄金43.48t，实现利税10.1亿元，黄金产量和经济效益在全国同行业中一直名列前茅。     

提金尾渣的再利用

对于黄金矿山来说，氰化尾渣中尚有可回收的金、银、铜、铅等有价金属元素．综合回收这些金属，既可以为矿山创造经济效益，同时减少了尾矿对环境的污染．     

黄金矿山尾矿资源回收和综合利用

通过分析黄金矿山尾矿的特点,总结了中国黄金矿山尾矿作为二次资源回收和综合利用的方法和途径。尾矿资源回收对缓解黄金资源短缺,延长黄金矿山服务年限将起到重要作用。黄金尾矿的综合利用不仅可以减少尾矿对环境的影响和危害,而且还可以获得良好的经济效益、环境效益和社会效益,是黄金矿山可持续发展的必然选择。     

基于DEA的黄金矿山经济效益评价模型研究

使用数据包络分析方法, 通过确定适当的评价指标, 综合评价了黄金矿山的经济效益, 并准确的分析的主要指标的投入多余量, 或产出不足量, 为矿山的微观经济分析提供了有效可行的技术手段, 计算结果合理有效, 印证了矿山的生产经营实际。     

黄金矿山尾矿的分类与开发利用

我国黄金矿山每年排放的数千万吨尾矿，占据大量土地，污染大气、水体，破坏植被，威胁生物生存．因此，尾矿的开发利用对于保护生态环境，提高黄金行业的综合经济效益和社会效益具有重要意义．依据黄金矿山尾矿中所含矿物成份的价值，将其分为以下四类：（1）含金量偏高，具有再回收前景；（2）可综合回收其它有价元素；（3）可作为其它工业原料；（4）目前尚无开发利用价值．并对各类尾矿的开发利用途径分别进行了评述，提出了加快黄金矿山尾矿开发利用的建议．     

GZQ—1型超轻便经纬仪研制成功

为了解决在矿山急倾斜天井内用罗盘仪遇铁引起的误差超限问题,山东省黄金工业局与莱州市黄金集团公司在江苏省徐州光学仪器厂协作下研制GZQ—1型超轻便经纬仪。 GZQ—1型经纬仪自试制到批量生产以来,山东黄金矿山已有23个矿山试验及推广应用了这种仪器,应用过程中深受矿山测量     

经济责任制承包在新城金矿实施取得较好效果

山东省新城金矿于1975年11月筹建,1976年2月破土动工,1980年1月建成并投产,是一座具有采、选、冶综合生产能力的大型黄金企业,是我国黄金行业骨干矿山之一。 自1984年企业整顿以来,根据冶金工业部“关于实行每两黄金工资含量包干”的文件精神,以及山东省《“七五”后3年黄金生产建设投入产出承包》的办法,结合新城金矿的实际情况,实行了经济责任制承包,强化了现代化管理,在生产经营活动中取得较好效果。     

电感耦合等离子体原子发射光谱法测定高碳除尘灰中11种元素

实验重点探讨了高含量碳对除尘灰样品中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素测定的影响,并解决了除碳的问题。样品使用马弗炉高温除碳,采用盐酸-硝酸-氢氟酸-高氯酸消解样品灰分,选择了镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素的分析谱线和扣背景模式,建立了使用电感耦合等离子体原子发射光谱法(ICP-AES)测定高碳除尘灰中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素的方法。在仪器最佳工作条件下,各元素校准曲线线性相关系数r均大于0.999 5,方法检出限在1.08～26.01 mg/kg之间。方法应用于除尘灰实际样品中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌的测定,结果的相对标准偏差(RSD,n=11)为0.90%～7.1%,目标元素的加标回收率为90%～117%;按照实验方法测定除尘灰中镁、铝、钾、钙、锌,结果与火焰原子吸收光谱法(FAAS)的测定结果相吻合。     

Management of Fluid Mud in Estuaries, Bays, and Lakes. II: Measurement, Modeling, and Management

Techniques for measurement, modeling, and management of fluid mud are available, but research is needed to improve them. Fluid mud can be difficult to detect, measure, or sample, which has led to new instruments and new ways of using existing instruments. Multifrequency acoustic fathometers sense neither density nor viscosity and are, therefore, unreliable in measuring fluid mud. Nuclear density probes, towed sleds, seismic, and drop probes equipped with density meters offer the potential for accurate measurements. Numerical modeling of fluid mud requires solving governing equations for flow velocity, density, pressure, salinity, water surface, plus sediment submodels. A number of such models exist in one-, two-, and three-dimensional form, but they rely on empirical relationships that require substantial site-specific validation to observations. Management of fluid mud techniques can be classified as those that accomplish: Source control, formation control, and removal. Nautical depth, a fourth category, defines the channel bottom as a specific fluid mud density or alternative parameter as safe for navigation. Source control includes watershed management measures to keep fine sediment out of waterways and in-water measures such as structures and traps. Formation control methods include streamlined channels and structures plus other measures to reduce flocculation and structures that train currents. Removal methods include the traditional dredging and transport of dredged material plus agitation that contributes to formation control and/or nautical depth. Conditioning of fluid mud by dredging and aerating offers the possibility of improved navigability. Two examples—the Atchafalaya Bar Channel and Savannah Harbor—illustrate the use of measurements and management of fluid mud.     

Review of Alcoholism: A bio-psycho-social approach.

Reviews the book, Alcoholism: A bio-psycho-social approach by Jerome David Levin (1990). This small volume sets its task as providing counseling students with a comprehensive knowledge base "summarizing biochemical, pharmacological, physiological, anthropological, sociological, epidemiological, historical, and psychological findings on alcohol and its use and abuse" (Preface, p. xi). It treats each of these, in varying degrees of depth, in seven chapters. Perhaps the greatest strength of the book is its thorough presentation of the medical consequences of alcoholism, the mechanisms involved, and the interplay between biological and psychological factors. Unfortunately, this volume does not provide sufficient coverage of treatment-related issues. It may serve as an introductory overview of the alcoholism field for undergraduate or graduate students, or professionals from other fields. It is too advanced, however, in its use of concepts and language, for paraprofessional students. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

电感耦合等离子体原子发射光谱法测定铍中11种杂质元素

铍中铝、钴、铬、铜、铁、镁、锰、镍、铅、硅和锌等11种杂质元素含量的准确测定,是判定铍材是否合格的重要指标。目前,上述杂质元素的测定标准为GJB 2513A—2008《铍化学分析方法》,方法分别采用光度法和原子吸收光谱法对各元素逐一测定,测定周期很长。试验采用盐酸-硝酸溶解样品,选择Al 308.215nm、Co 230.786nm、Cr 284.325nm、Cu 324.754nm、Fe 261.187nm、Mg 285.213nm、Mn 260.569nm、Ni 221.647nm、Pb 182.205nm、Si 250.690nm、Zn 213.856nm为分析谱线,采用标准加入法(MSA)配制标准溶液系列消除基体效应的影响,使用电感耦合等离子体原子发射光谱法(ICP-AES)测定铝、钴、铬、铜、铁、镁、锰、镍、铅、硅和锌,从而建立了铍中11种元素的测定方法。各待测元素校准曲线的线性相关系数均大于0.9995;各元素的定量限为0.001%~0.002%。实验方法用于测定铍样中铝、钴、铬、铜、铁、镁、锰、镍、铅、硅和锌,结果的相对标准偏差(RSD,n=10)为0.63%~8.6%,回收率为90%~110%。按照实验方法测定铍样中上述11种元素,测定结果与采用GJB 2513A—2008测定的结果吻合。     

Recent books.

Reviews the books The art of being, by Erich Fromm (1992); Basic writings, by Martin Heidegger (1993); History of the concept of time: Prolegomena, by Martin Heidegger (1992); Complexity: Life at the edge of chaos, by Roger Lewin (1992); The future of an illusion: Film, feminism, and psychoanalysis, by Constance Penley (1989); Human inquiry: A sourcebook of new paradigm research, by Peter Reason and John Rowan (1990); Reading Heidegger: Commemorations, edited by John Sallis (1993); and Truth and existence, by Jean-Paul Sartre (1992). Brief synopses of each book are presented, rather than full reviews. In The art of being, Fromm presents his synthesis of spiritual teachings from Zen to existentialism, as well as a synopsis of his earlier critiques of consumer capitalism. Basic writings is a collection of essays, lectures, and sections from Heidegger's major works. Of special interest to psychologists interested in Heidegger's methodology is the re-translation of the introduction to Being and Time. In History of the concept of time: Prolegomena, Heidegger elaborates the methodological and foundational connection of his work to Brentano, Dilthey, and Husserl, thus providing for the first time an authoritative understanding of the relationship of his uniquely hermeneutic phenomenology to the ideas of his predecessors. In Complexity: Life a the edge of chaos, Roger Lewin discusses the search for the set of rules that underly complexity theory and the "grand unification" of the life sciences. The future of an illusion: Film, feminism, and psychoanalysis, by Constance Penley, is a collection of essays on the sexual politics of representation. In Human inquiry: A sourcebook of new paradigm research, Reason and Rowan cover the philosophy, methodology, practice, and prospects of what the editors call "new paradigm research": alternative approaches to human science research that are both collaborative and experiential. Reading Heidegger: Commemorations is a richly provocative book of essays by an impressive list of 23 Heidegger scholars around the world. This text celebrates, reconsiders, and sometimes pokes fun at one of the most controversial and most important thinkers of our century. Finally, written in response to Heidegger's The essence of truth, Jean-Paul Sartre's Truth and existence provides a bridge between Sartre's Being and nothingness and his Critique of dialectical reason. It is a philosophical as well as psychological study of epistemology, based on his phenomenological ontology, that becomes a work on morality. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Measuring students' connectedness to school, teachers, and family: Validation of three scales.

Connectedness to school, teachers, and family are all significant protective factors in adolescents' lives, yet the measurement of each varies considerably. This article describes the measurement properties of three composite scales of adolescent connectedness, adapted from the Add Health study and the California Healthy Kids Survey. These composite scales are created by either summing or taking the mean of all individual items, measured on an ordinal scale. This approach fails to account for the ordinal, non-normal nature of the data. Using a covariance approach, this article describes the measurement properties of the latent constructs of connectedness to school, teachers, and family and the contribution of each of the items used to compile the relevant composite score. The outcomes of this study will provide researchers and practitioners with information about the validity, reliability, and overall usefulness of each of the measures of adolescents' perception of their connectedness to school, teachers, and family. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

分光光度-遗传算法同时测定锌、镉、钴、镍、锰

在pH9.3,乳化剂OP存在下,Zn2+,Cd2+,Co2+,Ni2+,Mn2+与5-Br-PADAP发生灵敏的显色反应,所形成的三元胶束络合物的吸收光谱严重重叠,单独测定相互干扰严重。本文将分光光度法与遗传算法相结合,对同一混合体系的总吸光度值进行解析,实现了5种组分的同时测定。模拟样品测定的相对误差一般小于±10%。     

火焰原子吸收光谱法测定合金结构钢中铬、锰

利用火焰原子吸收光谱法测定合金结构钢中铬、锰,此方法快速、准确、灵敏度高、精密性好,方法简便,并充分反应了现代仪器的高科技分析手段。合金结构钢使用较为广泛,因此利用原于吸收光谱法测定铬、锰,能迅速有效的达到检测目地的需要。本方法改变了以往化学法操作时间长、步骤多、消耗试剂多的弊病,解决了高氯酸氧化铬对人体的危害及对环境的严重污染。通过对各项做条件试验,优选了最佳仪器测试条件。对干扰元素铁、镍抑制铬的吸收,采用硫酸钠做干扰消除剂,彻底消除了干扰,测定数据稳定可靠。经过对标准样品的测定,重复性好,误差小,回收率达到99～102%,效果令人满意。     

Leaching Behavior of Metals Released from Cement-Stabilized/Solidified Refinery Oily Sludge by Means of Sequential Toxicity Characteristic Leaching Procedure

In this study, stabilization/solidification (S/S) of refinery oily sludge was applied using two types of cement (I and II), in cement-to-waste ratio from 0.1 to 0.7. The leaching behavior of heavy metals was investigated, by means of a five-point sequential toxicity characteristic leaching procedure (TCLP) test. Sequential TCLP was used to provide an improved assessment of long-term contaminant potential leachability, because the acidic leachant is renewed, whereas in the single TCLP, contaminant leachability is limited by the pH neutralization of the alkaline binder. Cement-based S/S of real refinery oily sludge resulted in very low leachability of heavy metals. Pb and Cd were not detected in any TCLP leachate. The maximum leachability of Fe, Zn, and Ni occurred in the pH range between 5.5 and 6.5. The leachability of Cu and Cr increased with increasing pH. Maximum cumulative percentage of Fe, Ni, and Zn leaching after five consecutive TCLP extractions (for worst case conditions, i.e., 10% II42.5) were 0.01, 22, and 1.2%, respectively, on the basis of metal content of each solidified sample. Further, the leaching behavior of Zn and Ni was modeled using the chemical equilibrium program Visual MINTEQ. Using several combinations of suspected solid phases of Zn and Ni hydroxides, carbonates and sulfides, and surface complexation onto ferrihydrite the diffuse double layer model did not accurately describe the leaching behavior of Zn and Ni.     

基体分离-电感耦合等离子体原子发射光谱法测定高纯钼中9种元素

利用电感耦合等离子体原子发射光谱法(ICP-AES)测定高纯钼样品中杂质元素含量时,由于钼元素具有丰富的谱线,因此钼基体对待测元素干扰较大。为了消除钼基体对待测元素的干扰,实验使用过氧化氢溶解样品,过量硝酸沉淀分离钼基体作为样品前处理步骤,建立了基体分离-电感耦合等离子体原子发射光谱法测定高纯钼中钙、铬、铜、钴、镁、镍、锌、镉和锰的方法。使用4mL过氧化氢溶解样品,10mL硝酸沉淀钼基体,钼的沉淀效率大于99%,沉淀后,各待测元素背景等效浓度均有下降,且回收率都高于85%,随沉淀损失较少。使用高纯钼基体沉淀分离的方法配制校准曲线,各待测元素校准曲线线性相关系数均大于0.9997;方法中各元素的定量限为0.20~2.03μg/g。实验方法用于测定高纯钼样品中钙、铬、铜、钴、镁、镍、锌、镉和锰,结果的相对标准偏差(RSD,n=5)为2.0%~4.8%,测定结果与电感耦合等离子体质谱法(ICP-MS)结果一致。