铁矿

A spectrographic procedure for determining copper in concentrated iron ores has been worked out for routine analysis.

我们尝试用光谱的方法协助解决分析大量铁矿精矿试样中微量铜(O.05-0.1％)的问题。

Bacterial and chemical oxidation of gold-bearing pyrite gives rise to not only ferric sulfate and sulfuric acid but also ferrous sulphate and low-valence oxide of sulfur. The potential in the system is too low to dissolve native gold to form Au(SO4)2- Experiments indicate that gold does not dissolve in sulfatic iron solution.

含金黄铁矿在细菌氧化、化学氧化过程中，除生成高铁的硫酸盐和硫酸外，还生成了亚铁的硫酸盐及硫的低价氧化物，体系中的电位较低，距溶解自然金呈Au(SO_4)_2~-所需电位甚远，实验表明，金不溶于硫酸铁溶液中。

Chapter 1 of the test mainly introduces BaoGang's general situation and thebackground of subject selection, chapter 2 is a brief introduction of the enterprisestrategy and the produce plan theories, chapter 3 introduce the domestic andinternational iron resource's present condition, chapter 4 is synopsize the supplysituation of mineral resource in BaoGang, chapter 5 put forward suggestion forBaoGang iron resource sustainable development strategy and implement.

本文第一章主要介绍了包钢的概况及选题的背景，第二章简介了企业战略和生产计划理论，第三章介绍了国内外铁资源现状，第四章简要分析了包钢铁矿资源供给形势，第五章对包钢铁资源可持续发展战略及实施提出了建议。

A method for producing fatty acid alkyl esters and/or glycerin comprising a step of bringing a fat or oil into contact with an alcohol in the presence of a catalyst, wherein the catalyst is at least one catalyst selected from the group consisting of the following to: a metal oxide having an ilmenite structure and/or a slyrankite structure; an oxide containing a metallic element belonging to the Group 12 and a metallic element belonging to the Group 4; a mixed oxide containing a metallic element belonging to the Group 12 and a tetravalent transition metallic element; a metal oxide containing zirconium and at least one metallic element selected from the group consisting of metallic elements belonging to the Groups 4, 5 and 8; and a metal oxide containing anatase type titanium oxide and/or rutile type titanium oxide, and the metal oxide containing a sulfur component of 700 ppm or less.

脂肪酸烷基酯和/或甘油的制造方法包括在催化剂的存在下使脂肪或油与醇接触的步骤，其中，所述催化剂是选自由下列～所组成的组中的至少一种催化剂：具有钛铁矿结构和/或斯里兰卡石结构的金属氧化物；含有属于第12族的金属元素和属于第4族的金属元素的氧化物；含有属于第12族的金属元素和四价过渡金属元素的混合氧化物；含有锆和选自由属于第4、5和8族的金属元素所组成的组中的至少一种金属元素的金属氧化物；和含有锐钛矿型氧化钛和/或金红石型氧化钛的金属氧化物，并且所述金属氧化物含有的硫成分为700ppm以下。

The results show that the water glass has a good selective depression for titanaugite in a weakly acidic medium with pH of 5.5-7.0, which is attributed to the strong action intensity between the water glass and titanaugite, hindering the adsorption of sodium oleate on the surface of titanaugite.

结果表明：在pH=5.5~7.0的弱酸性环境下，水玻璃对钛铁矿与钛辉石的抑制表现出良好的选择性，这是因为水玻璃与钦辉石间的强烈作用阻碍油酸钠在钛辉石表面的吸附，起到抑制作用。

According to the results of floatation of artificial mixed mineral and characterization of SEM, the surface of ilmenite will be coated by micro-size titanaugite, and the increase of mineral surface hydrophobicity can result in the increase of attractive force between the two kinds of mineral particles.

通过人工混合矿浮选试验结果和扫描电镜检测验证，微细粒钛辉石会在钛铁矿表面发生罩盖现象；矿物表面疏水性增强，两种矿物颗粒间的引力相应增大。

Three main factors (viz. surface potential, particle size and surface wettability) that influence the interparticle interaction between titanaugite and ilmenite particles were investigated in detail through the calculation of DLVO theory, measurements of electrokinetic potential and contact angle, experiments of floatation and characterization of scanning electron microscope.

通过DLVO理论计算、动电位、接触角和扫描电镜检测及浮选试验，研究影响钛辉石和钛铁矿颗粒间相互作用的3个主要因素，即表面电性、颗粒粒径和表面润湿性。

It is concluded that the relative high Al 2O 3 content in titaniferous iron ore leads to increasing of the viscosity and the melting-point of high titanium slag, irregularity in furnace operation and technical-and-economic indexes depression.

认为当钛铁矿中Al2 O3 含量偏高时会导致高钛渣粘度增加，熔点升高、炉况恶化以及指标变坏，同时还会影响二氧化钛的富集及氯化工序的正常生产。

In 1973 the Institute of Chemical Metallurgy was engaged to carry out research on fluidizcd roasting of titaniferous iron ore containing vanadium, with the special objective of utilizing the local resources of natural gas and hydraulic electric power, by reduction of the ore with a hydrogen-rich gas followed by melting of the reduced cinder in an electric furnace in order to separate the iron from a slag rich in vanadium and titanium.

化工冶金研究所于1973年接受了&流态化焙烧还原钒钛铁矿&的任务，要求结合当地资源，用天然气还原铁精矿，用水力发电熔化焙砂，再从熔渣中提取钒和钛。我们对流态化还原的若干方面开展了试验研究，包括铁精矿还原反应数据的获得和有关分析，以及可供应用的两种流态化反应器的工程研究。第一种是气控式多层流态化床，第二种是快速流态化反应器。此外，对于流态化还原中的失流以及熔砂的渣～铁分离和从熔渣中提取钒钛，也进行了试验研究。

The theory and method of quantum geochemistry were applied to study the energy factors of primary ore-forming elements and their geochemical characterizations. The crystal structure models of titanomagnetite and ilmenite were calculated by ab initio Hartree-Fock molecular-orbital method.

运用量子地球化学的理论和方法研究了该矿床的元素组合、分配及变化特征，并用量子地球化学的ab initio Hartree-Fock分子轨道法对钛磁铁矿和钛铁矿晶体结构进行了模拟计算。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。