Effect of Mineral on Metallurgical Coke Solution Loss Reaction in Blast Furnace

Thecokesolutionlossreactionisoneofthemostimportanteffectsresultingincokepulverizinginblastfurnace .Thefactorswhichaffectreactionincludecokeporestructure ,micro crystalstructureonporewall ,thecontentandconstituentofminer als ,etc .Amongthesefactors ,theconstituentofmineralsisemphasizedallovertheworldinrecentyears .Buttheemphasisofmoststudieswasputontheeffectofalkalimetals (K ,Na)oncokesolutionlossreactionandtheeffectofotherelementswassel domreported[1-5] .Theeffectofthirteenmineralsoncokesolut…     

Smithsonian Microbeam Standards

This is a short history of the Smithsonian Microbeam Standards; their sources, selection, preparation, and analyses. Fifty-eight minerals, natural glasses, and synthetic samples have been characterized in the past 25 years. During that time, over 750 requests were received for approximately 11 000 individual samples. These reference samples are referred to as the Smithsonian Microbeam Standards.     

抗高温磨损高铬铸铁的研究

经Mo、B、V、Ti合金化和RE变质处理的高铬铸铁，具有优良的抗高温磨损性能和强韧性，用于制造筛分高温烧结矿的振动筛筛板，使用寿命比ZG30Cr18Mn12Si2N耐热钢筛板提高2倍以上。多元高铬铸铁筛板制造工艺简单，成本低，值得在筛分领域推广使用。     

丽水市矿产资源产业必须走可持续发展之路

丽水市的优势自然资源之一是矿产资源。本文对丽水市境内的矿产资源的优势及开发现状进行了详尽分析。在此基础上提出如何开发利用好这一资源 ,走可持续发展道路的具体措施     

平湖油气田古近系花港组低阻油层成因与识别分析

低阻油气层是一种非常规储层 ,其油气层电阻率与邻近水层电阻率接近 ,或有时低于水层的电阻率。通过对花港组H5砂层组的岩石类型、颗粒大小、粘土矿物的成分及其分布、孔隙结构、润湿性、地层水矿化度进行研究 ,表明该砂层组低阻的原因主要是由于高束缚水饱和度及高地层水矿化度引起的。     

The bioconversion of tunisian phosphorite usingAspergillus niger

It is well known that the production of phosphoric fertilizers by traditional methods is connected with certain environmental problems, particularly related to use of acids during the decomposition of natural phosphates. A basic problem is also the fact that only 15 – 20% of the phosphorus contained in superphosphates is assimilated by plants.The development of methods to process natural phosphates without acid precipitation has potential advantages and in this respect biotechnological processing of natural phosphates in order to obtain organo-mineral fertilizers is very promising. The possibility of bioconverting the phosphorus of natural phosphates by usingAspergillus niger fungi through their deep incubation has been investigated. The investigations aim to achieve a high degree of P₂O₅ extraction from the phosphates with conversion from a non-utilizable to a utilizable form. The influence of the fungal strain, the kind of nutritive medium and the time of incubation of the process of biological mobilization of the phosphate rock is examined.It was established that the time of incubation, the kind of micro-organisms of theAspergillus niger group, as well as the kind of nutritive medium, influence significantly the process of bioconversion and the conversion of phosphorus from non-utilizable to water-soluble and utilizable for plants form. A maximum degree 90% of phosphorus extraction in the form of water-soluble and citrate-soluble has been reached for 10-day incubation. Physicochemical examinations have been carried out and they have proved that, as a result of the produced organic acids, a process of decomposition of the initial Tunisian phosphorite takes place.     

CaF_2-CaO-MgO-Al_2O_3-SiO_2电渣渣系高温力学性能的研究

本文针对结晶器与铸锭作相对移动的电渣重熔过程中对渣系的高温强度及塑性的要求,对10种CaF_2-CaO-MgO-Al_2O_3-SiO_2渣组成进行了渣的高温强度及塑性的测定,建立了渣组成—渣的岩相结构—渣高温强度及塑性间的对应关系,并选择出较合适的成分范围为CaF_2 35～60％,CaO 10～25％,Al_2O_3 10～20％,SiO_25～15％,MgO≈5％。对其中一个成分的渣进行了电渣热穿孔熔铸中空锭生产实验,并取得了良好的表面质量。     

松香及其衍生物在浮选分离中的应用

介绍了松香的来源、化学组成及理化性质；讨论了松香及其衍生物在非硫化物矿浮选分离、有色金属离子的浮选分离以及从水溶液中浮选分离有机物等方面的应用情况。     

钙—铈氟碳酸盐矿物中BmSn型新多型的发现及其微结构研究

利用Philips CM-12分析型透射电镜对四川昌北大型稀土矿床中钙铈氟碳酸盐矿物进行了研究。除证实氟碳钙铈矿(BS)存在3R和6R2种多型外,首次发现和研究了氟碳钙铈矿(BS)存在4H、12H、18R、24R、30R和36R6种新多型;伦琴矿(BS_2)1种6R新多型和B_2S新规则混层矿物2H、12R和24R3种中新多型。电子衍射和晶格象分析表明:该类矿物中众多新多型的产生,主要是由于矿物结构单元层沿(?)轴有序堆垛和[CO_3]的定向周期性变化所致。     

低电阻率气层测井评价方法

粘土矿物成份是造成气层电阻率低的主要原因。用灰色静态模型计算孔隙度，用BP神经网络计算束缚水饱和度等参数。与岩心分析结果比较，储层参数计算结果精度有所提高。用储层参数建立气层和水层的判别式，判别结果与试油有较好的一致性。综合数字处理结果建立了气层产能评价模型，处理结果与试油结果比较，符合率82％。