镁还原渣的应用现状

随着我国近年来硅热法炼镁的迅猛发展,镁还原渣也越来越多,如何的利用好这些镁还原渣,将其变废为宝,是摆在镁冶炼科研和生产工作者面前的一大课题.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也比较好的利用,本文结合近年来国内外这方面的文献以及笔者在镁冶炼方面的科研和实践经验,对近年来镁还原渣的综合利用给予了总结.     

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。     

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。     

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。     

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。     

The use of heating by high-frequency current in heat treating thin steel parts

Conclusions A new method of local hardening of thin steel parts with heating by high-frequency current permits mechanization and automation of the hardening process, eliminates tempering of the ends of the blades in a lead bath, straightening, holding in clamps for tempering, and gives 100% control of the hardness.The labor productivity has increased five times and rejects due to cracking have been eliminated.Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, p. 51, November, 1969.     

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.     

The use of wrought magnesium in bicycles

The basic properties of magnesium alloys suggest that they would readily find use in bicycles. Magnesium alloys have low density and a high strength-to-weight ratio, are readily extrudable, and some alloys are highly weldable. A lack of information about wrought magnesium alloys, a lack of suppliers to complete the production process, and a lack of information in how to set up a manufacturing plant to process wrought magnesium alloys have contributed to only limited market penetration by magnesium into bicycle applications. This article examines what has worked and what has not in the use of magnesium alloys in the bicycle business. For more information, contact Josh Deetz, Magnesium Manufacturing Consultants, Taiwan; josh@deetz.com.     

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。     

钢铁行业含锌废料的利用

本文介绍了我国的钢铁厂所产生的含锌废料的来源和成分,循环利用的工艺技术以及存在的一些问题.     

The use of magnesium in lightweight lithium-ion battery packs

The analysis of recently announced battery packs for plug-in hybrid electric vehicles (PHEV) shows that the design of the series-parallel combinations is being over-complicated. The proven energy densities of lithium-ion cells from about 200 Wh/kg are being reduced to 90 Wh/kg. The majority of the weight increase seems to be for thermal management. Simpler battery pack designs based on electro-refining pot rooms using self-contained rectangular lithium-ion cells with air cooling inside of die-cast magnesium cell tanks would help avoid hauling dead weight in PHEV by providing considerable weight reduction.     

影响镁电解电流效率的因素

着重介绍有隔板和无隔板电解槽的氧化镁浓度、电解质温度、电流密度、极距、阳极工作高度、加料、大气温度及电解质中杂质对电解过程的影响。