镁还原渣余热利用的现状及尚需解决的问题

硅热法炼镁是我国炼镁的主要方法,近年来我国镁生产规模不断扩大,新技术也不断出现.通过这些年科研和生产工作者的不断研究和实践,目前,镁还原废渣已经得到了比较广泛的利用,但是对镁还原渣中蕴含大量余热的利用研究却不多.本文在总结国内对镁还原渣余热利用成功案例的基础上,提出了镁还原渣余热利用中需要解决的难点,为以后合理利用镁渣余热提供了一定的思路.     

镁还原炉排渣专用设备——清渣机组的设计研究

清渣机是硅热法炼镁的大型心用设备,其用途是清除镁还原罐的残渣。本文结合我院开发设计该机组的情况,对其工作原理、主要结构、技术参数、操作使用及综合评价等方面一概要介绍。     

硅热法炼镁还原过程烟气热能利用的探索与实践

本文介绍了根据该厂厂情在热能综合利用上进行的大明尝试以及取得的较好成效；热能综合利用不仅解决了该厂用煤的烘干和烧茶水洗浴的燃料问题，而且降低了生产成本，减少了投资，为企业年创效益达２７万余元。     

硅热法炼镁时还原率和硅利用率的数学模型

本文采用多因素二次正交回归的试验方法得出了计算单个球团在真空下还原的氧化镁还原率和硅利用率的数学模型,试验证明了模型的可靠性;分析了回归方程(即数学模型)与试验点的拟合程度,在所考察的研究范围内,可用回归方程来预报镁的还原率与硅的利用率。     

魅力四射的镁

镁是一种银白色的轻金属，密度仅为174g／cm^3，还不到铝的2/3，而镁合金的强度又很高，早在二战前即以其在多种结构(如飞机结构件)上的适用性，而成为最轻的优质金属结构材料。从1808年发现元素镁起，镁及镁合金的发展历经近200年的世事沧桑。而就镁的应用而言，远及公元前100年的汉武帝时代，     

硅热法炼镁中影响还原真空因素的分析

还原反应对真空的要求是真空度应控制在５Ｐａ－１０Ｐａ。在设计具空系统时选择的管道应尽量短而粗，边接部位尽量少，过滤器应当便于清理和密封，真空机线应配备合适数量的还原罐。分析了影响还原真空的各种因素。其中直观因素有：还原罐本身是否破损，端盖的密封是否严密；真空管道焊接应过关；过滤器应定时清理；真空机组组的油污染，真空系统的许多接部位的密封程度对真空影响很大。隐性因素有原料制备工艺指标和炉汨方面的原因     

硅热法炼镁还原反应条件的梯度

硅热法炼镁过程的还原反应为缩核反应,球团在加热时,传热与内部化学反应构成了联合机制。各反应条件是重要因素．为了获得最佳的镁的产出率与硅的利用率,那么还原反应的条件的梯度就是关键中的关键,通过试验研究,我们确立了这些参数的梯度。     

硅热法炼镁过程还原炉温与真空的控制

根据生产实践,为在还原过程中获得高的镁产出率与硅的利用率,提出在同一周期不同时间内的温度控制范围与真空的控制及其变化状况,并从炉子的供热与传热分析了缩核反应的推进速度与炉料受热速度的关系,只有在罐内中心区炉料未达到反应温度时才能用整体缩核理论或宏观整体效应的理论来解释。     

用数学模型分析硅热法炼镁时各因素对还原率和硅利用率的影响

本文利用已经建立起来的回归方程(即数学模型),分析了还原过程各因素(还原温度、还原时间、压型压力和配硅比)对还原效率和硅利用率的影响,并就选择最佳工艺参数的问题进行了讨论。     

Calculating the solubility of magnesium oxide in multicomponent slag melts

A technology of arc welding with an alternate discrete-pulsed supply of gases – argon and helium – ensuring the highest mechanical properties as regards the strength and ductility of the welded joints, the formation of high-quality welded joints of the required dimensions and shape, the removal of unacceptable deformation, and the stability and productivity of the process is proposed. A universal and efficient method of controlling the energy parameters of the welding arc is described and gas equipment – regulators of gas supply, awarded patents of the Russian Federation, has been constructed.     

镁合金及泡沫镁合金成形技术的开发与应用

介绍了镁合金及泡沫镁合金成形技术的研究及生产应用状况,列出了镁合金在自行车、汽车、航天等领域的应用实例,指出镁合金生产企业应抓住镁材料的发展机遇,研发具有高附加值的镁合金及泡沫镁合金产品,在车辆节能减排中发挥积极的作用.     

Newly developed magnesium alloys for powertrain applications

Several new magnesium alloys have been developed recently for high-temperature applications to obtain an optimal combination of die cast-ability, creep resistance, mechanical properties, corrosion performance, and affordability. Unfortunately, it is difficult to achieve an adequate combination of properties and, in fact, most of the new alloys can only partially meet the required performance and cost. The ZE41 alloy, which is used for most gravity-casting applications, has moderate strength and creep resistance combined with good cast-ability. Although this alloy exhibits poor corrosion resistance, it is still preferred for certain applications. For more information, contact E. Aghion, Dead Sea Magnesium Ltd., P.O. Box 1195, Beer Sheva 84111, Israel; +972-8-628-2422; fax +972-8-628-2431; e-mail eli@dsmag.co.il.     

Primary magnesium production costs for automotive applications

Focusing on primary magnesium production cost estimates, this paper provides a forecast of the long-term competitiveness of magnesium in automotive applications. Competing magnesium production technologies are considered, with particular emphasis on the long-term viability of cheap supplies using Chinese production technology. Also considered are two yet-to-be commercialized production processes.     

Mechanical properties and potential applications of magnesium alloys

1　INTRODUCTIONDuringthefirsthalfofthetwentiethcentury ,magnesiumalloyswereusedextensivelyincivilianandmilitaryaircraftcomponents.TheneglectofmagnesiumalloysafterworldwarⅡwasrepresentedbytheslumpoftheproductionfrom 2 2 8.8kt/ain194 4to 10kt/aafterWorldWarⅡ .Themostsig nificantapplicationofmagnesiumalloysinthesecondhalfofthetwentiethcenturywasinproductionofair cooledenginesandgearboxesforVolkswagenBeetle ,whichledtheautomobileindustrytomakeavolun tarycommitmenttoachieve 30 %CO2 emissio…     

皮江法炼镁还原渣用作燃煤固硫剂的试验研究

我国是一个贫油富煤的国家,且高硫煤所占比重很大,煤炭燃烧产生的SO2是导致酸雨形成的主要原因,我国镁工业每年排出大量的镁还原渣,镁渣中含有大量的碱金属氧化物,完全可以用作燃煤的固硫剂。本文通过实验室的实验,试图证明镁还原渣用过燃煤固硫剂的可行性,并初步探索出最佳的固硫条件。     

The science, technology, and applications of magnesium

The very low density and excellent castability of magnesium is leading to increased use in various applications, especially in automobiles, despite poor galvanic corrosion resistance and a higher cost than aluminum. Further expansion of the magnesium market should come from reduced cost, an increased design base, a better understanding of the scientific underpinning of magnesium alloys, improved protection systems, and the development of cost-affordable cast and wrought products. F.H. Froes earned his Ph.D. in physical metallurgy at Sheffield University in 1967. He is currently the director of the Institute for Materials and Advanced Processes, University of Idaho. Dr. Froes is a member of TMS. D. Eliezer is currently a professor in the Materials Engineering Department at Ben-Gurion University of the Negev, Israel. Dr. Eliezer is also a member of TMS. E. Aghion is currently magnesium research director at Dead Sea Works, Ltd.     

海水电池用镁阳极的研究与应用

镁阳极材料具有电负性好,比能量高以及密度小等优异性能,在海水电池领域具有广阔的应用前景。综述了近年来国内外镁阳极海水电池的研究及应用,讨论镁阳极材料的活化机制和腐蚀行为,探讨合金元素和第二相对镁阳极电化学活性和耐腐蚀性能的影响,指出今后海水电池用镁阳极材料的发展应在充分研究合金元素活化机理和第二相影响的基础上,研制出自腐蚀速率更小、阳极利用率更高以及比能量更大的新型镁合金阳极材料。