低品位金矿氰化堆浸提金工艺的应用

一、河南低品位金矿石可浸性试验河南省低品位金矿石资源比较丰富,但矿石类型多,分布广,有些矿山的储量有限,受技术经济条件的限制,难以建立机械化选厂。为充分利用这部分资源,一九八二年以来,我们对这类矿点进行了堆浸提金可行性调查,通过矿石可浸性试验,初步认定有13个矿点适用堆浸提金工艺。这些堆浸矿点通过方案设计已陆续开始堆浸试生产,有     

广西凌云县逻楼金矿生产性堆浸试验研究

本文介绍了广西凌云县逻楼金矿微细粒浸染型金氧化矿石的生产性堆浸试验。试验方法采用氰化法堆浸,其工艺流程是:原矿石—二段破碎—筑堆—洗矿—喷淋浸出—炭吸附—解吸—电解—熔炼。试验结果:入选矿石量3231t,矿石品位Au2.56g/t,浸出时间48天,尾渣品位Au0.69g/t,金浸出率72.86％,回收率70.25％,回收黄金5735.24克。金生产单位成本为39.67元/克,获纯利润4.7万元,取得了较好的经济效益。     

堆浸法提金氰化过程影响因素分析

概述了黄金生产中堆浸法提金生产和研究的重要性、堆浸法提金的概念及其氰化过程机理。金矿堆浸的关键在于氰化过程,而氰化过程受许多方面因素的影响,对此进行了较详细的论述分析。指出在金矿堆浸生产中,必须综合考虑各方面影响因素,方可取得好的效果。     

泥旦沟金矿堆浸试验研究

泥旦沟金矿采用堆浸工艺,对低品位矿石进行提金试验。试验矿石品位2.25g/t,规模4795t。金的浸出率67.74％,单位矿石利润66.8元/t,经济临界品位降至1.23g/t,矿山服务年限得到有效延长。     

青海省滩间山金矿堆浸尾矿提金工艺试验研究

滩间山堆浸尾矿目前有三十多万吨,通过对滩间山堆浸尾矿选冶工艺流程试验研究,采用浮选—焙烧—氰化—电解的提金工艺在技术上获得了总回收率达84.84%,年创利税383.67万元的较为理想的试验指标。研究和解决这一地区金矿堆浸尾矿的工艺问题,对提高矿山经济效益,扩大青海省的黄金生产能力,促进青海西部地区的经济发展,都具有重要的现实意义。     

"点石成金"有佳处--话说汤山金矿

阐述了汤山金矿的发现过程及其成因，汤山金矿采用“堆浸法”提取金，详尽描述了该方法提取金的工艺流程；破碎→制粒→筑堆→喷淋→吸附，并建议将汤山金矿作为旅游地学景点加以开发。     

堆浸法提金的回顾与展望

本文简明扼要地对河南省低品位金矿石采用堆浸法提金的发展做了回顾。短短几年内,先后对河南省内14个县和全国9个省的不同金矿石做了塔式试验,提交了48份试验研究报告,60～70％的报告为生产部门采用,对我省和全国黄金生产起了重要作用。同时还展望了堆浸技术的发展前景。     

低品位金矿堆淋试验研究

堆淋法提金是近十几年发展起来的一种先进技术,国外已被广泛应用于工业生产。该法的最大特点是适于处理含金1～3克/吨的低品位矿石。河南金矿资源丰富,矿石类型也较多,近年来,我们对河南不同类型金矿进行了堆淋可浸性能的试验研究。一、实验室试验 1、试验目的: 确定某金矿石采用堆淋法处理的主要技术指标和工艺参数,作为工业性堆淋试验的依据,也可供工业生产作参考。 2、试验设备及方法: 塔试流程如图1所示。采用了两种规格的浸出塔,一种是直径为100毫米、高为2000     

添加ZH-1型助渗剂堆浸提金工艺的应用

文章以桂西某高泥质微细粒型氧化金矿堆浸提金为例,在同等条件下,将添加与未添加ZH-1型助渗剂的堆浸工艺的应用效果进行对比,其结果证明ZH-1型助渗剂在高泥质微细粒型氧化金矿堆浸工艺中,对提高金的浸出率有显著作用.     

英国几个金矿山堆淋试验和工业生产

一九八一年十一月,由联合国技术合作部聘请的美国HomestaKe采冶公司总冶金师K·B·霍尔,到河南进行技术讲座;关于低品位金矿堆淋提金的技术问题。本文选自霍尔讲课的部份内容,并在文字上作了编排。——《河南地质》编辑部一、鳄鱼岭矿一号矿体在地表,全部氧化;二号矿体埋藏较深,含有炭质物;三号矿体在最下部,含有大量炭质物。三个矿体总储量454万吨,金平均品位4.12克/吨。堆淋试验:一堆5000吨,矿石破碎到19     

桂西低品位微细粒型金矿石堆浸技术

桂西低品位微细粒型金矿石堆浸技术原则工艺已日趋完善。通过变一次性底垫为多次使用底垫;改变矿石筑堆方法;提高喷淋强度;变间歇性吸附为全天候吸附等技改措施,达到增强矿堆透水性,提高浸出率,缩短喷淋周期,降低生产成本,提高经济效益的目的。     

金活动态测量法在红壤区与干旱黄土区找矿中的应用

用金属活动态提取法在广西与山西黄土区进行试验研究,发现在山西黄土区,利用金的水提取态含量偏低,异常不明显,而金的粘土结合态、有机物结合态和铁锰氧化物结合态异常清晰地反映在矿体上方;而在雨量充沛的广西红壤区,金的水提取态和铁锰氧化物结合态异常较好,而粘土结合态金异常效果不太理想。研究结果表明在这两个地区应用金属活动态测量法进行找矿研究时,可以对其提取有利的相态来进行靶位确定。     

Geological characteristics and metallogenic prognosis of main gold deposit in Altai gold ore belt, Xinjiang

Altai polymetallic mineralization belt is famous copper-polymetallic mineralization belt in the world. There are a lot of gold deposits in the Altai ore belt in Xinjiang, China. These gold deposits belong to two genetic types: volcanogene late-stage hydrothermal type and fractured altered rock type. The authors discuss mainly the geological and mineralized features of fractured altered rock type of gold deposits in Altai gold ore belt. Base on this study, the metallogenic law is summarized and the deep metallogenic prognosis has been done in Duolanasayi and Tuokuzibayi gold deposits, and some mineralized anomalys have been discovered.     

Geological characteristics and metallogenic prognosis of main gold deposit in Altai gold ore belt, Xinjiang

Altai polymetallic mineralization belt is famous copper-polymetallic mineralization belt in the world. There are a lot of gold deposits in the Altai ore belt in Xinjiang, China. These gold deposits belong to two genetic types: volcanogene late-stage hydrothermal type and fractured altered rock type. The authors discuss mainly the geological and mineralized features of fractured altered rock type of gold deposits in Altai gold ore belt. Base on this study, the metallogeniC law is summarized and the deep metallogenic prognosis has been done in Duolanasayi and Tuokuzibayi gold deposits, and some mineralized anomalys have been discovered.     

青海省都兰县巴隆岩金矿床地质特征及找矿标志

对巴隆岩金矿成矿地质背景、矿体特征、矿石特征及其控矿因素等进行分析研究。认为区内矿体与NWW向断裂关系密切,NWW向昆中主断裂为矿床的导矿构造,NWW向F1断裂为矿床的配矿构造,矿区内F2,F3,F4,F5等NWW向次级断裂为矿床的容矿构造;尤其是在拐弯或膨胀处;强烈的印支期岩浆活动,剧烈的构造运动为金元素的活化、迁移、富集、沉淀提供了通道和成矿空间;矿石类型主要为构造蚀变岩型;重砂矿物标志、地貌标志、颜色标志、气味标志、化探异常标志等是该区的主要找矿标志。结合区域上成矿背景分析认为该矿区有着良好的找矿前景,并建议对矿床深部及外围做进一步工作。     

金属活动态提取法及其在黑龙江大兴安岭森林覆盖区的应用

介绍了金属活动态的理论依据、成晕机制及提取方法,并应用金属活动态提取法在大兴安岭原始森林覆盖区对已知矿进行试验研究,发现在高寒森林覆盖区,利用金的水提取态异常强度低,异常不明显,而金的粘土结合态和铁锰氧化物结合态异常清晰地反映在矿体上方,异常强度居于中等。金的有机质结合态异常值虽然高,但容易受有机质在样品中颗粒大小等因素的影响而使异常出现多个峰值。总之,利用金属活动态提取法在高寒森林覆盖区进行找矿可以快速有效地确定异常,但要注意排除过多有机杂质在提取过程中的影响。     

Mineral occurrence for Dachang gold deposit and its impact on gold recovery rate in Qumarleb County,Qinghai

Based on X-ray diffraction,optical microscopy and scanning electron microscopy analysis of the Dachang gold ore,it is showed that the sulfide of ore is the main carrier minerals of gold. A majority of gold is embedded in pyrite and tetrahedrite as the form of inclusion and a small amount intergrowth with pyrite and gangue mineral,occasionally the presence is in form of monomer natural gold. The main factors which influence the recovery rate are sulfide mineral particle size,and the fine grained sulfide is beneficial for the dissociation and flotation of gold bearing minerals. The monomer dissociation degree of gold bearing minerals can reach91. 3%,when the grinding fineness is less than 0. 074 mm and grain level accounts as 80%. It is not conducive to the flotation of sulfide if the grinding fineness is low or high. It is difficult to completely dissociate the monomer if there is a small amount of pyrite and arsenopyrite in the ore. Therefore,before leaching the gold,it must conduct pretreatment to reach the ideal recovery rate of the gold,like roasting oxidation,pressure oxidation and biological oxidation. The fine microscopic gold has little influence on the gold recovery rate.     

沂沭断裂带中段金矿特征及找矿方向研究

沂沭断裂带是中国东部著名的深大断裂,由4条大断裂组成,沂水-汤头断裂是其4条主干断裂之一。近几年来,在该断裂上发现了龙泉站、牛家小河、南小尧等金矿,使沂沭断裂带金矿找矿取得了突破。该文在研究金矿地质背景、矿床地质特征、矿床成因的基础上,归纳总结了金矿类型、成矿规律,认为沂沭断裂带不但导矿,而且储矿,提出了新的找矿方向,为沂沭断裂带乃至整个郯庐断裂带进一步开展金矿找矿工作提供了依据。     

Mineral occurrence for Dachang gold deposit and its impact on gold recovery rate in Qumarleb County,Qinghai

Based on X-ray diffraction, optical microscopy and scanning electron microscopy analysis of the Dachang gold ore, it is showed that the sulfide of ore is the main carrier minerals of gold. A majority of gold is embedded in pyrite and tetrahedrite as the form of inclusion and a small amount intergrowth with pyrite and gangue mineral, occasionally the presence is in form of monomer natural gold. The main factors which influence the recovery rate are sulfide mineral particle size, and the fine grained sulfide is beneficial for the dissociation and flotation of gold bearing minerals. The monomer dissociation degree of gold bearing minerals can reach 91.3% , when the grinding fineness is less than 0. 074 mm and grain level accounts as 80%. It is not conducive to the flotation of sulfide if the grinding fineness is low or high. It is difficult to completely dissociate the monomer if there is a small amount of pyrite and arsenopyrite in the ore. Therefore, before leaching the gold, it must conduct pretreatment to reach the ideal recovery rate of the gold, like roasting oxidation, pressure oxidation and biological oxidation. The fine microscopic gold has little influence on the gold recovery rate.