认真搞好平果铝土矿的综合利用

平果铝土矿中伴生有14种以上的稀有元素,其中含量较高的有镓、钒、钛、钽、铌、钪和稀土.分析了主要稀有元素在铝土矿中的存在状态、综合利用前景和经济价值,提出平果铝厂投产后就着手研究回收镓、钒、查定母液和赤泥物质组成,对赤泥选钛、铁。选钛是钪、钽、铌综合回收的重要途径.对含稀土炭质岩、矿和离子吸附型稀土矿床进行普查。     

从氧化铝生产的铝酸盐溶液中回收镓的方法

当前,金属镓主要是在处理铝土矿类优质矿的过程中回收。实际上,处理铝土矿不是单纯为制取镓,而是在以生产氧化铝为目的的处理铝土矿的同时,把镓从被富集的中间产物中提取出来。拜耳法处理铝土矿的过程中,75％的镓以镓酸钠形式进入铝酸盐溶液。由于铝土矿溶出不完全,致使溶出后的赤泥中仍含有镓(约为矿石最初含量的30％)。进一步处理铝酸盐溶     

广西新圩铝土矿地质特征

新圩铝土矿是广西继平果铝土矿之后可拜耳法生产氧化铝的又一堆积型铝土矿基地，探明矿石储量达超大型矿床规模。本文介绍该矿床的基本质特征，矿石物质组合玢及加工技术性能。     

贵州铝土矿中伴生元素综合利用前景分析

基于贵州铝土矿,结合斑竹园铝土矿实例,在简单介绍矿石类型的基础上,提出了铝土矿矿石的伴生元素,并对这些伴生元素的综合利用价值和前景进行了深入的分析和阐述,为加快伴生元素赋存状态、分布形态以及控制因素的研究,实现矿产资源高效利用提供理论依据。     

平果铝土矿伴生组分的综合利用前景

平果铝的建成投产，已在中国有色工业发展史上写下了光辉的一页。为能尽早形成规模经济，平果铝二期工程的建设也在紧锣密鼓之中。如何在企业形成规模经济后，继续寻找企业经济的增长渠道，笔者想就从平果铝土矿中几种相关的伴生稀有金属的性质、用途及赋存状况谈谈其综合利用前景。     

数理统计在铝土矿分类中的应用

1962年颁布的铝土矿分类标准Y B123—62,对矿石中有用组分Al_2O_3。含量和铝硅比值之间的对应关系作了明确的规定。但生产实践证明,铝土矿是一种多用途的矿物原料,其中Fe_2O_3,不仅是主要矿物成分之一,而且其含量的高低对氧化铝生产方法及矿石的综合利用都有极为重要的影响,同时,它还控制着矿石中Al_2O_3含量。因此,要制定一个包括Fe_2O_3含量因素在内的分类标准。根据矿石加工的要求,     

平果铝土矿两段溶出工艺的探讨

针对平果铝土矿的特点,在分析比较了近年来所进行的用平果那豆铝土矿生产氧化铝的工艺和物相研究结果之后,以拜耳法工艺为基础,提出了两段溶出新工艺,即一段常规不完全溶出,赤泥分级,粗赤泥二段强化溶出。它适应矿石溶出性能较差的特点,在提取     

二段分解法浓集和回收镓的扩大试验报告

郑州铝厂现用的铝土矿含镓0.006～0.008％,种分母液含镓0.13克/升,碳分母液含镓0.07克/升,拜耳法精液含镓0.178克/升。生产溶液中镓已达到平衡,不再积累,自矿石进入溶液中的镓都被氢氧化铝带走。按当前我厂生产规模估算,每日被带走的镓达110公斤以上。如镓的回收率按30～40％计算,每天约     

晋豫铝土矿综合评价研究

根据山西铝厂拜尔法对铝土矿的要求,对晋豫铝土矿进行专题研究：铝土矿资源调查：矿石物质组分的研究;矿石加工性能试验。从而得出结论,建立山西铝厂在收购铝土矿时,把山西境内的铝土矿收购放在首要位置;对河南铝土矿只宜收购Ａ／Ｓ在１０以上的高品位矿石,且与山西矿及孝义西河矿搭配使用,以满足山西铝厂拜尔法生产工艺要求。     

关于平果铝土矿采矿方法的研究

地质资源概况平果铝土矿有五个矿区。那豆矿区储量已探明。铝土矿中的氧化铝平均含量为59.94％,三氧化二铁含量为15.88％,铝硅比为10.37。     

A STUDY ON THE BEHAVIOUR OF GALLIUM IN THE IRONMAKING PROCESS

Gallium is a valuable rare metal which is mainly being used in the production of GaAs. The demand for gallium is increasing but production is limited since gallium is extracted only as a by-product of bauxite processing. On the other hand coal, ironmaking coke and iron ore gangue contain traces of gallium. However little is known about the behaviour of gallium in ironmaking. The aim of the study is to clarify the distribution of gallium between hot metal, slag and top gas by means of laboratory experiments. It was found that Ga2O3 is not stable in blast furnace slags and that gallium is retained in hot metal. Vacuum distillation experiments with hot metal showed that gallium is not transferred to the gas phase. Data on the input and output of gallium at two industrial blast furnaces, as well as chemical analyses of the gallium content of several cokes are presented, too.     

A STYDT ON THE BEHAVIOUR OF GALLIUM IN THE IRONMAKING PROCESS

Gallium is a valuabie rare metal which is mainly being used in the production of GaAs,The demand for gallium is increasing but production is limited since gallium is ex-tracted only as a by-product of bauxite processing.On the other hand cool,ironmaking coke and iron ore gangue contain traces of gallium.However little is kmown about the behaviour of gallium in ironmaking.The aim of the study is to clarify the distribution of gallium between hot metal,slag and top gas by means of laboratory experiments.It was found that Ga2O3 is not stable in blast furnace slags and that gallium is retained in hot metal.Vacuum distillation experiments with hot metal showed that gallium is not transferred to thw gas phase.Data on the input and output of gallium ot two industrial blast furnaces,as well as chemical analyese of the gallium content of several cokes are presented,too.     

平果铝土矿降低洗矿含泥率的生产实践

针对平果岩溶堆积型铝土矿含泥率较高的特点,为了控制并降低洗矿产品的含泥率,同时保持较高的洗矿生产效率,平果铝土矿通过不断改进并优化洗矿流程生产工艺,有效降低了洗矿含泥率,保证了供矿质量,为氧化铝厂提产降本创造有利条件。     

Processing to obtain high-purity gallium

Gallium has become increasingly popular as a substrate material for electronic devices. Aside from ore, gallium can be obtained from such industrial sources as the Bayer process caustic liquor that is a byproduct of bauxite processing, flue dust removed from the fume-collection system in plants that produce aluminum by the electrolytic process, zinc refinery residues, gallium scrap materials, and coal fly ash. The purification process for gallium can start with solvent-extraction processes where the concentrations of impurities, especially metals, are reduced to the ppm range. This article describes how ultra-purification techniques can be employed to reduce the undesirable impurities to the low ppb range. The various procedures described give an idea as to the extent of work needed to obtain and prepare high-purity gallium for electronic application. For more information, contact R.G. Bautista, University of Nevada, Department of Metallurgical and Materials Engineering, Reno, Nevada 89557; e-mail bautista@mines.unr.edu.     

平果岩溶堆积型铝土矿地质特征及成矿模式探讨

平果岩溶堆积型铝土矿是我国华南特大型铝土矿矿床，本文主要对其独特的地质特征及成矿模式进行分析探讨。     

对我国铝土矿资源和氧化铝工业发展的认识

本文从我国氧化铝工业的发展和碱耗、能耗、成本的大幅度降低，分析论证了一水硬铝石原料的优势和劣势，得出了平果型矿石是优质资源，其它矿通过选矿经济脱硅石也可成为优质资源，因而采用拜耳法和选矿拜耳法是我国氧化铝工业技术发展的方向。     

影响矿山挖掘机生产能力的因素及其提高途径

挖掘机生产能力是衡量平果铝土矿的一项重要经济技术指标,对完成全年采剥计划有着直接关系。本文分析了影响挖掘机生产能力的因素及提高途径,以便充分挖掘生产潜力,提高生产效率,保证矿山的稳产、高产。     

The essential role of gold in the fabrication of microwave electronics systems

Microwave technology will be the cornerstone of 21st Century electronics. Microwave electronics systems differ radically from conventional silicon semiconductor technology, requiring specialist semiconductors, circuits and interconnects. Gallium arsenide and gallium nitride are advanced compound semiconductors that fulfil the first requirement. Gold and gold alloys have unique properties that are essential for integrating these components into functioning systems.     

喀斯特地貌上尾矿库的施工技术

建设在喀斯特地貌上的、广西平果铝厂铝土矿尾矿库 ,库内溶沟、溶洞、落水洞随处可见 ,裂隙、溶槽、溶蚀密布 ,其渗露问题在施工中是一棘手难题。针对以上难点 ,介绍了对其施工的方法和技术     

从国内外铝工业现状 谈平果铝业公司的发展方向

介绍了国内外铝土矿资源的分布特点、氧化铝生产工艺、能耗、成本、产量及我国电解铝工业生产的现状，分析了国内铝工业生产中存在的主要问题，并根据平果铝在资源、生产工艺等方面潜在的优势，对平果铝的发展方向提出了几点看法及建议。