采选工艺过程中减少砂金流失途径的探讨

阐述了从砂金开采，转运及各选收作业中，减少砂金流失，提高砂金回收的有效方法及技术指标。     

细粒砂金选收研究

细粒金矿砂在介质中沉降时，因阻力充当动压力会使细长、密实、不规则的细粒金损失。以跳汰分选为基础的采金船工艺和“先分级、后分选”的精选厂工艺，能保持细粒金矿砂与介质相对速度的最小值，并能最大限度地选收细粒金。     

砂金选矿工艺检测探讨

我国砂金矿山迄今尚未建立一套规范的工艺检测方法,安康金矿集多年生产实践,总结出了简便可行符合生产规律的取样检测及回收率计算方法,有效指导了生产,在砂金生产上有一定推广价值.     

砂金选矿工艺检测探讨

我国砂金矿山迄今尚未建立一套规范的工艺检测方法，安康金矿集多年生产实践，总结出了简便可行符合生产规律的取样检测及回收率计算方法，有效指导了生产，在砂金生产上有一定推广价值。     

细粒砂金选收研究

细粒金矿砂在介质中沉降时，因阻力充当动压力会使细长、密实、不规则的细粒金损失。以跳汰分选为基础时采金船工艺和“先分级、后分选”的精选厂工艺，能保持细粒金矿砂与介质用对速度的最小值，并能量大限度地选收细粒金。     

长石矿物及采选工艺

本文介绍了长石的性质、分类、用途、产品质量标准和长石的采选工艺。     

现代砂金选矿工艺

本文介绍了伊尔库斯克稀有金属研究院砂金选矿的现代工艺。此工艺是建立在传统的重力选矿基础上 ,其中包括优化给料粒度 ,泥砂分选 ,合理利用溜槽、跳汰机、螺旋选矿机、摇床、圆筒离心选矿机和离心跳汰机等设备     

砂金选矿厂应用双曲波摇床的研究

以安康金矿为例，对照传统６Ｓ摇床存在的问题，介绍了双曲波摇床的特性及其选金的效果。     

攀枝花选矿厂磁尾中细粒钛铁矿回收的意义与途径探讨

攀枝花选钛厂废弃的－０．０４ｍｍ的磁选尾矿中金属分布率高达３９．１９％，文中论述了有效回收这部分细粒钛铁矿对充分利用国家资源和提高攀矿企业经济效益所具有的重大意义，并推荐采用离心．离心－强磁－浮硫的选别流程和建设适当规模的氧化球团厂以有效回收这部分资源。     

关于采金船挖斗漏矿问题的探讨

通过对采金船挖斗给受矿漏斗供矿时漏矿原因的分析认为：采取改变挖斗开口形状、调节卸矿时的冲洗水压和水量、缩短斗链与受矿漏斗间的相对距离等措施，可把漏矿损失减少到最低程度。同时，强化漏矿回收的选别工艺也是解决漏矿问题的重要措施。     

凡口铅锌矿选矿过程中锗、镓行为走向探讨

凡口铅锌矿矿石除富含Pb、Zn、Ag、S外,还富含稀散金属资源锗（Ge)、镓（Ga）。通过近十年来对不同选矿工艺流程及药剂制度下Ge、Ga的跟踪分析,发现在高碱介质条件下,优先浮选铅锌分离过程中,使用闪锌矿的抑制剂硫酸锌,对Ge、Ga在浮选过程中的行为走向有显著的影响。     

Modern gold deportments and its application to industry

Modern gold deportment studies include physical, chemical and mineralogical assessments, combined to obtain a full understanding of the nature and variability of gold in a resource. The objective is to provide information which will allow cost effective and practical processing by informing decisions regarding resource evaluation, mining method and extraction process optimization.The distribution of gold, based on speciation, grain size and mode of occurrence (liberation, exposure, and mineral association) is quantitatively determined by means of automated Scanning Electron Microscopic Techniques (QEMSCAN/MLA). Furthermore, general mineralogical characterization is undertaken in order to characterize the gangue components; with special emphasis on deleterious characteristics of the ore (e.g. cyanide consumers such as secondary Cu-species, preg-robbers/borrowers, passivation due to Sb-minerals or As-minerals and oxygen consumers such as pyrrhotite/marcasite).Predictions based on the mineralogical observations are confirmed by physical and chemical testwork. These include grading analyses, gravity separation, direct cyanidation, and diagnostic (sequential) leach tests.     

白云鄂博矿选矿技术攻关的回顾与展望

总结评述了半个世纪以来，白云鄂博矿选矿科研进展及生产技术攻关所取得的成果，并对今后的综合利用与选矿厂的技术进步提出几点看法。     

青海某金矿浮选尾矿环保提金试验研究及实践

青海某金矿矿石性质属典型的难处理金矿,在生产初期处理混合矿石,浮选回收率较低。基于浮选尾矿矿石性质开展CIL环保提金剂浸出试验研究,环保提金剂浸出生产实践表明,浮选尾矿金的浸出率为53.95%,选矿总回收率达到92.7%,浸出生产成本降低6元/t,年经济效益增加378万元,实现了浮选尾矿环保浸出清洁化生产。      

Suffusion processes in the technology of formation of enriched zones inside gold placer mining waste dumps

Under analysis are suffusion properties of alluvial rocks in the waste dumps formed in the course of surface and underwater mining of natural placers. The authors describe calculation process for one of the main characteristics of suffusion ability of alluvial rocks in the placer mining waste dumps—the maximal diameter of a filtration channel in rocks depending on the ratio of combinations of its typical diameters.     

On the use of lignin-based biopolymer in improving gold and silver recoveries during cyanidation leaching

In the present paper, influence of a lignin-based biopolymer in improving gold and silver recoveries during cyanidation leaching is discussed. Series of laboratory cyanidation leaching testworks at the absences and the presences of the biopolymer were performed under variations of the biopolymer concentration, NaCN concentration, slurry density and particle size distribution. The ore samples used were from Pongkor Gold Mine of PT. Antam, Tbk. in Indonesia. The biopolymer additive was found to reduce slurry viscosity that leads to a higher dissolved oxygen concentration in the leach solution. The testwork results show that the use of biopolymer improves gold and silver recoveries as well as leaching kinetics. At biopolymer dosage of 800 mg/L, the increases of gold and silver recoveries were 4.5% and 6.4%, respectively. The lignin-based biopolymer is able to disperse fine solid particles and stabilizes the ore suspension in the leach-slurry that results in a better contact between the ore and the leaching agents. The effect of biopolymer on the gold and silver recoveries was found to be more significant at lower cyanide dosages. The addition of biopolymer resulted in the increase of cyanide consumption, lowering final pH and higher dissolved iron which is associated with gold-bearing pyrite dissolution. Enhanced dissolution of gold-bearing pyrite at higher dissolved oxygen concentration was found as the major factor that improves gold recovery at the presences of the biopolymer in addition to lowering slurry viscosity that leads to higher dissolved oxygen concentration and effect of fine particles dispersion.     

青海—阿斯哈矿区金矿工艺矿物学及金赋存状态研究

青海阿斯哈矿区金矿石选矿指标不理想,没有达到预期效果,由于缺乏系统的工艺矿物学研究,无法根据矿石的特点选择合理的选矿工艺,造成该矿石的选矿指标一直没有达到预期效果,严重影响了该矿产资源的有效利用和企业的经济效益,为了合理开发利用该矿产资源,提高选矿回收率。本文通过化学分析、光学显微镜、扫描电子显微镜与能谱分析等手段对该矿石进行了系统的工艺矿物学研究,结果表明：硫化型矿石中平均金品位3.5g/t,银品位195.1g/t,氧化型矿石中金品位0.56g/t,银品位为＜3g/t。金属矿物主要是黄铁矿和褐铁矿,脉石矿物主要是石英、长石等。金主要有包裹金、裂隙金和晶隙金三种赋存状态。     

灵丘县国营露天砂金矿矿山地质环境问题及治理对策

灵丘县国营砂金矿长达50余年的露天开采,导致了一系列地质环境问题和居民纠纷。通过对国营金矿开展矿山地质环境调查发现,主要环境问题为崩塌和滑坡、地形地貌景观破坏、压占和挖损损毁土地等,含水层破坏、环境污染和生态破坏影响较轻。消减边坡角形成平台、采坑填埋、堆料场清理、工业场地拆除,覆土,恢复植被;矿山道路恢复为乡村道路等良好的治理措施,不仅提高了土地资源利用率,而且改善了人居生态环境。