纯铝中硅铁铜镓钛的光度法快速测定

提出了用一份制备液同是测定纯铝中硅，铁，铜，镓钛的新方法。用氧化钠溶解试样，盐酸酸化，然后用硅钼蓝光度法测定硅，邻二氮杂菲光度法测定铁，双环己酮草酰二腙光度法测定铜，丁基罗丹明Ｂ光度法测定镓，二安替比啉甲烷光度法测定钛，利用该方法分析铝标样，其结果与标准值合合，该方法简便，快速，准确。     

直接还原铁工程技术管理浅谈

介绍直接还原铁工程技术管理工作,建立技术管理体系;完善技术管理办法,制订技术攻关计划,搞好技术培训工作。     

焙烧杯体的热惯性

通过严格的热工测定，分析了利用焙烧杯进行铁矿石球团焙烧试验时，加热或冷却气流与焙烧杯内壁面间的热交换过程，提出并验证了焙烧杯热惯性的计算方法。从而以实验室实验为基础，借助数学模型，制订现场焙烧制度，提供了不可缺少的、借以消除规模干扰的重要依据。     

承钢高炉寿命的现状及延长寿命的对策

分析了承钢高炉寿命短的原因，并根据高炉冶炼钒钛矿的特点，提出了延长高炉寿命的对策。     

Behavior of Fe, Mn, Cu and Cd in the duwamish river estuary downstream of a sewage treatment plant

The behavior of dissolved Fe, Mn, Cu and Cd in the Duwamish River downstream of a sewage treatment plant located near Seattle, Washington, was investigated in three distinct zones: (1) immediately downstream of the effluent outfall, (2) further downstream in the freshwater portion of the river and (3) in the estuarine mixing zone. A three-end-member tracer model utilizing salinity and dissolved inorganic nitrogen was developed to distinguish physical mixing processes from biogeochemical reactions. The results of this investigation indicate that Fe was removed from the dissolved phase onto particulates near the plant. Although no additional reactions controlled the distribution of dissolved Fe, Mn and Cu in the freshwater portion of the river, Cd was removed from the dissolved phase. In the estuarine mixing zone, a significant fraction of the dissolved Fe and Cu was removed from solution, while Mn and Cd desorbed from particulates. The chemical forms of the trace metals rather than their sources appear to determine their participation in these reactions.     

热变形白口铸铁颗粒状碳化物的形成

探讨了热变形白口铸铁中颗粒状碳化物的形成，结果表明：尺寸较大的碳化物来源于铸态中棒状碳化物；尺寸较小的碳化物直接从基体中形核；尺寸介于两者之间的碳化物来自热变形诱发析出，且变形量越大则细小的颗粒状碳化物数量越多。     

直接还原铁厂回转窑设备的定心找正

回转窑是直接还原铁厂的主体设备,因为回转窑是分段制造,在安装现场组装焊接成一体的,所以,在回转窑的安装中,保证各段窑壳的同心度是施工的一个关键环节。本文主要介绍回转窑安装中如何定心找正,确保回转窑同心度的方法。     

江西省钢铁工业与汽车工业发展的结合点--长力公司发展的战略思考

长力公司发挥自身优势将钢铁工业与汽车工业发展相结合,以“做大、做精、做强”汽车零部件原料和汽车零部件为发展战略。     

Temperature Dependence of Brittle Fracture Toughness of Reactor Pressure-Vessel Steels upon Ductile Crack Growth

The main mechanisms of brittle fracture upon ductile crack growth are studied on the basis of the probabilistic model of brittle fracture and the deterministic model of ductile fracture, which were put forward by the authors earlier. The investigations are carried out on the reactor pressure-vessel steel 15Kh2NMFAA in the initial and embrittled states. The dependences of brittle-fracture probability on the stress intensity factor and the value of ductile crack growth are calculated for various temperatures. The temperature dependence of brittle fracture toughness in the initial and embrittled states is predicted with and without regard for ductile crack growth. The authors analyze the main factors that govern the above-mentioned relationships. The calculated results are compared to test data for CT-type compact specimens.