跨行政区游憩空间柔性一体化研究 ——以高莱茵河沿岸地区为例

随着城市化与区域一体化的迅速发展,不同行政区之间的联动关系越来越紧密,这种联动关系在城市各功能空间的设计上有所体现,更渗透到了与市民息息相关的游憩空间建构之中。受制于行政管理等方面的原因,在跨行政区的游憩空间一体化实施过程中,往往会采取一系列柔性措施。以欧洲高莱茵河沿岸地区为研究对象,分析高莱茵河沿岸地区游憩空间的发展与现状,总结其游憩空间体系的构建特点,为中国跨城市河流沿岸的游憩空间柔性一体化建构提供策略与建议。     

5429双马来酰亚胺树脂的固化动力学研究

通过差示扫描量热法(DSC)研究了5429双马树脂的固化过程。分别使用Kissinger模型和Flynn-Wall-Ozawa模型计算得到了5429双马树脂动力学参数。结果表明Kissinger模型与FWO模型计算得到的动力学参数较为接近,验证了两个动力学模型的有效性。由于5429双马树脂的固化反应为一级反应,因此代入相应的固化动力学参数可得到其固化动力学方程。此外,通过T-β外推法可计算得到5429双马树脂凝胶化温度、固化温度和后处理温度等特征温度。     

锂辉石除铁研究

本文通过对浮选锂精矿和纯净锂辉石中铁的赋存状态的研究,针对铁的不同存在形式,采用不同的工艺将其去除,从而获得了适用于电视机显像管破壳等高档玻璃的低铁锂辉石。     

生产低铁锂辉石的工艺流程及其特点

根据锂辉石的物质组成特点,作者论述了几种生产低铁锂辉石的工艺流程及各流程的特点。     

阴极还原法治理含铜废水的影响因素

采用阴极还原法治理含铜废水。讨论了电极材料、槽电压、pH值、反应时间、温度和搅拌等因素对cu2’去除率的影响。采用石墨（阳极）-不锈钢（阴极）作配对电极，槽电压为2．2V，电解时间60min，电解液pn=2．0，常温搅拌，在此条件下，铜离子去除率达95％以上。     

Preparation of activated carbon with low ash content and high specific surface area from coal in the presence of KOH

An activated carbon with ash content less than ]0% and specific surface area more than 1600 m^2/g was prepared from cool and the effect of K-containing compounds in preparation of cool-based activated carbon was investigated in detail in this paper. KOH was used in co-carbonization with coal, changes in graphitic crystallites in chars derived from carbonization of coal with and without KOH were analyzed by X-ray diffraction (XRD) technique, activation rates of chars with different contents of K-containing compounds were deduced, and resulting activated carbons were characterized by nitrogen adsorption isotherms at 77 K and iodine numbers. The results showed that the addition of KOH to the coal before carbonization can realize the intensive removal of inorganic matters from chars under mild conditions, especially the efficient removal of dispersive quartz, an extremely difficult separated mineral component in other processes else. Apart from this, KOH demonstrates a favorable effect in control over cool carbonization with the goal to form nongraphitizable isotropic carbon precursor, which is a necessary prerequisite for the formation and development of micro pores. However, the K-containing compounds such as K2CO3 and K20 remaining in chars after carbonization catalyze the reaction between carbon and steam in activation, which leads to the formation of macro pores. In the end an innovative method, in which KOH is added to coal before carbonization and K-containing compounds are removed by acid washing after carbonization, was proposed for the synthesis of quality coal-based activated carbon.     

矿用乳化液泵连杆球头磨削工装的设计

设计并分析了乳化液泵连杆球头的磨削工装     

英国专家D·A·Sutcliffe先生来我厂技术咨询简介

<正> 应煤炭部技术司的邀请,英国煤炭管理局煤炭研究院退休专家(原材料实验室主任)D·A·Sutcliffe先生于1987年9月13日来到张家口煤矿机械厂对矿用圆环链进行为期三周的技术咨询。本文仅从矿用圆环链,矿用联接环,刮极输送机中部槽等三个方面将D·A·Sutcliffe先生来厂技术咨询的有关技术内容分别介绍如下: 一、有关矿用圆环链方面的技术内容 1.介绍了英国在矿用圆环链生产和发     

燃烧法测定炉渣中硫的含量

用燃烧─碘酸钾容量法测定炉渣中硫的含量．实验表明，同传统的重量分析法相比较．此方法具有迅速、简单、精密度和准确度高等优点．     

浅谈机立窑水泥厂的生存发展之路

1机立窑水泥企业现状与存在的问题1．1现状我国现有立窑水泥厂7000余家，水泥产量约占总产量的80％左右。在立窑企业中机立窑占到企业数量的85％。水泥产量占到立窑水泥的90％以上。其技术经济指标现状如下：熟料标号多数为520－550#，600#以上有300多家；水泥标号425#占总量的70％，有部分525#；水泥品种以矿渣水泥为主，有部分普通水泥和特种水泥；熟料标准煤耗多数为150－158kg／t－CK；小于140kg／t-CK的有400多家，少数大于160kg／t－CK；水泥综合电耗多数为95－98kwh／t，小于90kWh／t的有700多家；全员劳动率多数为140－170吨水泥…