云南某多金属矿旋流器与高频细筛组合分级工艺试验研究与应用

云南某多金属矿锡石次精矿产品采用"旋流器+立式搅拌磨+浮选脱硫+磁选脱铁+摇床"选别工艺处理,选别过程中由于旋流器分级效率波动大,导致旋流器沉砂夹细较为严重,进入立式搅拌磨机磨矿后,造成锡石过粉碎,摇床对锡石的回收率较差.根据试验研究:采用"旋流器+高频细筛+立式搅拌磨+浮选脱硫+磁选脱铁+摇床"选别工艺,可有效减轻细粒级锡石进入立式搅拌磨机磨矿造成锡石过粉碎现象,对提高锡石在摇床上的回收起到很好作用.试验结果表明,采用新选别工艺流程,分级质效率由80.13％提高到83.14％,分级量效率由67.2提升至73.52％,锡石次精矿粒度-400目含量由40.6％降低至31.15％,摇床选别可获得锡石粗精矿相近的情况下,作业回收率由26.05％提高到30.33％的工业试验指标,实现锡石有效回收.     

水力旋流器在泗洲选矿厂的应用

介绍了水力旋流器在德兴铜矿泗洲选矿厂粗选段磨矿分级、精选段尾矿选硫等方面的应用现状.实践表明,精选段磨矿分级采用水力旋流器比螺旋分级机的分级效果较好;精选段尾矿选硫采用水力旋流器可获得硫精矿含S31.22%～40.36%、回收率为38.92%～65.43%的选别指标,虽然硫精矿品位与回收率波动较大,但该工艺具有操作方便、占地面积少、成本低廉等特点,是目前铜矿回收硫的主要方法.     

水力旋流器在泗洲选矿厂的作用

介绍了水务旋流器在德兴铜矿泗洲选矿厂粗选段磨矿分级、精选段尾矿选硫等方面的应用现状。实践表明,精选段磨矿分级采用水力旋流器双螺旋分级机的分级效果较好;精选段尾选硫采有水力旋流器可获得硫精矿含Ｓ３１．２２％－４０．３６％、回收率为３８．９２％－６５．４３％的选别指标,虽然硫精矿品位与回收率波动较大,但该工艺具有操作方便、占地面积少、成本低廉等特点,是目前铜矿回收硫的主要方法。     

南非某铂金矿选矿工艺设计

南非某铂金矿包含Merensky和UG-2两种矿石。根据该矿矿石性质和半工业试验结果,选矿设计采用阶段磨矿—阶段选别工艺。对碎磨工艺设计进行了研究,最终采用了中碎前预先筛分的破碎工艺流程和高频细筛+旋流器组合的磨矿分级工艺流程;对浮选工艺设计进行了研究,确定了适合该矿的浮选工艺流程;同时针对铂族金属矿物高密度的特点,指...     

KMLF型斜窄流分级浓缩箱在细粒锡回收选矿中的应用

介绍KMLF斜窄流分级浓缩箱的原理与结构特点，通过生产考核表明，设备工艺性能先进、分级过程平稳、分级效率高，为矿浆选别作业创造了条件。     

德瑞克高频振动细筛在歪头山铁矿选矿改造中的应用

介绍了美国Derrick高频振动细筛在歪头山铁矿选矿厂工艺改造中的应用与效果。Derrick细筛的高效、精确分级,提高了三段磨矿分级的分级效率,增加了再磨深选系统的处理能力。     

白云鄂博磁铁矿矿石选别工艺

文章介绍了包钢选矿厂建厂以来白云鄂博磁铁矿选别工艺的重大技术成果及白云鄂博磁铁矿选矿技术展望,提出了选别磁铁矿今后的发展思路.     

梅山选矿厂磁-重选流程优化的设想

针对梅山磁一重选的选矿工艺现状，分析了洗矿和浓缩分级的效果、四个粒级的选别指标、精矿和尾矿的构成，提出了改善直线振动筛的洗矿效果、提高2～0．5mm粒级的中磁场强、降低入选粒度等10点设想，有利于优化现有工艺、减少资源流失。     

浅析包钢选矿厂磁矿六、七系列磨矿分级工艺

包钢选矿厂于2009年元月20日对磁铁矿八、九系列改造以来,采用阶段磨矿-阶段选别工艺流程。生产实践表明:阶段磨矿-阶段选别工艺流程选别指标优于连续磨矿工艺。为此选矿厂于2011年上半年对磁矿六、七系列进行阶段磨矿-阶段选别工艺流程改造,六、七系列阶段磨矿-阶段选别工艺运行以来,入选粒度、最终永磁精矿品位均低于八、九系列。为查明六、七系列阶段磨矿-阶段选别工艺存在问题,作者对六、七系列与八、九系列阶段磨选流程进行对比考察分析,提出优化六、七系列阶段磨选流程的建议。     

焙烧弱磁选系统一段分级设备由双螺旋分级机改为旋流器分级的效果评价

分级机改旋流器在酒钢选矿厂焙烧磁选系统工业试验表明：磨矿分级循环负荷大幅度提高，分级产品适和BX-CTBl024型高场强、八磁极磁选设备的选别要求。     

冶金工业英文超级科技词表叙词分类的研究

阐述了《冶金工业英文超级科技词表》编制过程中的叙词分类原则,分析了典型的分类案例,得出如下结论：正确的分类要以《中图分类法》为依据;准确的分类要以专业知识为基础;批量分类是提高效率和一致性的有效方法;分类是一个不断完善的过程。     

Special epiphyseal injuries. 5 case examples

In daily practice, the well-proved Salter-Harris-Rang epiphyseal injuries classification is used worldwide and in Hungary as well. Occasionally there are to be seen epiphyseal injuries which cannot be typed by this classification. The Ogden classification of epiphyseal injuries which enlarges the Salter-Harris-Rang classification with 6 subdivisions and 3 more subdivisions is very useful for the classification of such rare epiphyseal injuries. The authors focus one's attention on Ogden IIB type and Ogden VI type injuries on the basis of their own experience. Ogden IIB is often unstable and susceptible to shortening. In Ogden VI type ligamentous instability beside growing disturbance, caused by meta-epiphyseal bone bridge formation, can be seen. The comminuted growing plate injury caused by high energy direct trauma and healed without growing disturbance in their case, is missed in the Ogden classification. The proper classification is a necessary condition of adequate treatment. We recommend the Ogden classification of rare epiphyseal injuries.     

Cognitive development and reading: The relation of reading-specific multiple classification skill to reading comprehension in elementary school children.

Cognitive flexibility, the ability to consider multiple aspects of stimuli simultaneously, develops over the elementary school years and can be measured with a multiple classification task. Although prior research indicates a significant relation between domain-general multiple classification skill (e.g., classifying objects by shape and color simultaneously) and reading, a precise relation between these abilities has not been found. A reading-specific multiple classification task was designed that required children to classify printed words along phonological and semantic dimensions simultaneously. Reading-specific multiple classification skill made a unique contribution to children's reading comprehension over the contributions made by children's age, domain-general multiple classification skill, decoding skill, and verbal ability. Additionally, training in reading-specific multiple classification facilitated children's reading comprehension. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Φ660旋流器结构参数优化实践

泗选厂Φ3.2×3.1m球磨机在将螺旋分级改为旋流器分级后,因国内无参考配置,初期未找到合适参数,致使分级效果差,影响浮选指标。本文着重介绍该厂对该旋流器结构参数进行的一系列优化配置实践,并最终找到了较佳配置,提高了分级效果。     

金属矿床地下采矿方法分类表的修订

科学、合理地进行采矿方法分类有助于后期新采矿方法的分门别类及采矿基础理论的发展。针对采矿方法分类存在的诸多问题,结合采矿方法分类发展历程,对分类基本原则进行了归纳,并对分类中存在的问题进行了详细的阐释、论述与订正,基于此制订了采矿方法修订原则且改进了原有的采矿方法分类表。研究表明：（1）分类应依地压管理方法进行,联合法应剔除采矿方法分类表,支柱及支柱充填采矿法属于充填法,嗣后充填类采矿方法分类则视回采时充填体所起作用而定;（2）空场嗣后充填采矿法的归属问题应视回采时具体情况而定,组合式采矿方法包含于三大类采矿方法,而联合式采矿法则单独分类,“爆力运矿采矿法” 不必列入“采矿方法名称”列;（3）采矿方法分类必须依回采时（非回采后）的地压管理方法进行,结合各类采矿方法特性,得到改进后采矿方法分类表。     

Issues in the use and interpretation of discriminant analysis.

Reviews the 2 problems for which a discriminant analysis is used—separation and classification. Issues related to the use and interpretation of a discriminant analysis are those pertaining to (a) distinguishing between a linear discriminant function and a linear classification function, (b) misusing stepwise discriminant analysis programs, (c) ordering variables and selecting variable subsets, (d) choosing a classification rule, (e) estimating true classification hit rates, (f) assessing classification accuracy, and (g) examining and using classification results. Most of these issues deal with information available from package discriminant analysis computer programs. (50 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

TNM classification: cancer of the stomach

The 5th edition of TNM Classification was published by the UICC (International Union Against Cancer) in 1997. In the classification of gastric cancer, anatomical subsites and N category were newly published. The new classification and role of the Japanese TNM Joint Committee were described in this paper. The Japanese committee had strongly advocated to continue "the anatomical N classification", because the hazard ratios were more significant for prognosis of patients with gastric cancer, and had many reasonable and scientific advantages. However, the UICC introduced "a new N classification by number of metastatic lymph nodes" because of the difficulty in studying nodes by anatomical classification. The new TNM can not be considered an improved classification, and so we are looking for a more scientific, practical, and internationally acceptable classification.     

澳大利亚JORC资源/储量分类标准与中国及俄罗斯分类标准的对比及意义

为践行国家"一带一路"战略,加快中国矿业企业的国际化步伐,在全球范围内配置优质资源,规避海外并购的资源风险,完善国家矿产资源/储量分类标准,使之被广泛接受。阐述了中国、俄罗斯及澳大利亚JORC矿产资源/储量分类标准,介绍了俄罗斯各类别储量的可靠程度,分析了中西方资源/储量分类标准的差异、优点和不足,并将JORC标准、俄罗斯资源/储量分类标准和中国标准在地质可靠程度上进行了对应。分析表明:三类资源/储量分类标准既有共同之处,又差别明显,中国资源/储量分类标准有必要吸取国外分类标准的优点,与国际接轨;其意义是既有利于实现国家战略,提高企业的国际化水平,又能提升整个地质行业的发展水平,适应社会经济发展。     

选矿物料分级技术与设备的研究进展

综述了选矿分级技术与设备的研究现状和进展。重点介绍了重力水力分级、离心力水力分级和高频振动筛分三大不同类型10种分级设备的结构特点、工作原理、技术性能和研究应用情况。认为矿物分级技术发展较快,应用范围不断扩大,基本满足选矿工艺对矿物粒度分级效果的要求。     

Bayesian Learning Using Automatic Relevance Determination Prior with an Application to Earthquake Early Warning

A novel method of Bayesian learning with automatic relevance determination prior is presented that provides a powerful approach to problems of classification based on data features, for example, classifying soil liquefaction potential based on soil and seismic shaking parameters, automatically classifying the damage states of a structure after severe loading based on features of its dynamic response, and real-time classification of earthquakes based on seismic signals. After introduction of the theory, the method is illustrated by applying it to an earthquake record dataset from nine earthquakes to build an efficient real-time algorithm for near-source versus far-source classification of incoming seismic ground motion signals. This classification is needed in the development of early warning systems for large earthquakes. It is shown that the proposed methodology is promising since it provides a classifier with higher correct classification rates and better generalization performance than a previous Bayesian learning method with a fixed prior distribution that was applied to the same classification problem.