GC新型高产磨技术特点

南京旋立重机最近研制成功了GC新型高产磨。它彻底改变传统磨内结构和风力分布结构。通过强化物料在磨内的分级功能．均衡磨内物料流速．及时将不同粒径的物料分选进入相应的粉磨仓中．实现各种不同粒径的物料在磨机内采用与其相对应的、不同的研磨体进行破碎或研磨的目的。从而使物料能在最佳粉磨机理的条件下完成粉磨作业，提高粉磨效率，降低系统的能耗。与常规磨机相比，增产10％～20％，粉磨吨电耗下降2～3kWh。该技术同样适合传统磨机改造，技改投资少，周期短，效果明显，是传统磨机升级换代产品。     

挤压机联合粉磨工艺系统的应用

本文以山东水泥厂生料粉磨系统改造为例，介绍了打散分级机的原理、结构和功能，挤压机联合粉磨工艺系统的应用和运行状况。该系统改进后，获得增产１１２％；降低电耗４６．４５％等的显著效益，并改善了劳动环境。     

KBMX内外选粉技术综合改造水泥磨效果显著

盐城市科室建材环保设备有限公司针对水泥企业中的中短磨水泥粉磨系统,开发出KBMX内外选粉综合改造技术。该技术将专利技术产品、省高新技术产品KBM磨内改造技术设备与另一专利技术产品KBX风悬浮超细转子选粉机有效结合,从而获得高产量、高强度、高比表面积的产品,最大限度地发挥中短磨粉磨效率。1 KBMX内外选粉综合改造技术的应用原理 KBMX水泥磨综合改造技术是将KBM磨内改造技术及设备与KBX风悬浮超细转子选粉机综合运用于水泥中短磨机,KBM磨内改造技术及设备是该公司的专利产品,被认定为江苏省高新技术产     

引领未来粉磨技术的莱歇磨

自从1906年莱歇公司成立以来,一直在发展新的粉磨技术，同时，为了挖掘工厂高效系统的潜能,也在不断地改进新的粉磨技术。     

挤压粉磨技术在水泥厂技改中的应用

应用挤压粉磨技术改善物料易磨性，节能效果显著，本文论述了挤压粉磨技术的兴起，辊压机－挤压粉磨的原理及其系统流程，并就国内应用实例作了介绍。     

过粉磨现象产生的原因及改进措施

通过对河南焦作建兴水泥公司的水泥磨安装超细破碎机后出现过粉磨现象原因的分析,提出了采取磨机筒体淋水冷却、加强磨内通风、掺加助磨剂、改造选粉机等方法来提高粉磨效率。并在此基础上,实施了相应的改进措施,基本克服了过粉磨现象。增加了磨机产量,降低了粉磨电耗,取得了良好的效果。     

粉磨系统的几种节能方式

粉磨系统的几种节能方式江南水泥厂王益新在水泥生产工艺过程中，生料、煤和水泥三个粉磨工序的电耗占水泥生产总电耗的７０％以上，且目前磨机的电能利用率最高仅在７％左右，可见降低粉磨电耗的潜力之大。为此，水泥厂的生产设备和工艺急需改造，特别是粉磨工艺的改造更...     

粉煤灰的大型化粉磨与分选技术

结合生产实例，论述了半终粉磨与分选技术在粉煤灰大型化粉磨作业中的应用。采用半终粉磨工艺流程，能够尽量使原料固有的颗粒形态不过多地受粉磨影响而改变，100％生产Ⅰ级粉煤灰；可以减少磨机的过粉磨现象，有利于降低电耗，提高粉磨效率；用作混凝土的细掺料，可以改善混凝土和易性、抗渗性、可泵性等产品性能。     

水泥粉磨系统增产节能和发展壮大的途径

介绍高掺量矿（钢）渣水泥粉磨系统工艺改造和增产节能的几种途径。提出了我厂水泥粉磨的最佳粉磨方式，实施后效果显著，增产１５％，节能１０￣１２％。     

粉磨方式对掺微粉水泥性能影响的研究

在水泥中分别掺入2．5％－10％的硅灰和磨细粉煤灰，在振动磨中进行事粉磨和单独粉磨5－20min，对比水泥细度，凝结时间和净浆抗压强度的变化，并从微机上分析粉磨对水泥性能影响的机理。     

常用磨机的使用及维护

介绍了砖瓦行业常用的两种磨机——球磨机和悬辊式磨机的主要技术性能以及磨机使用和维修要点。     

谈磨煤机基础的施工重点及技术创新

从混凝土的配比、预留螺栓孔洞的制作及安装、混凝土的施工等方面探讨了磨煤机基础的施工重点及技术创新,提出了具体的施工注意措施,完善了磨煤机基础施工工艺,积累了磨煤机基础施工经验。     

Effect of biological wastewater treatment on the molecular weight distribution of soluble organic compounds and on the reduction of BOD, COD and P in pulp and paper mill effluent

Pulp and paper mill wastewater was characterizated, before (influent) and after (effluent) biological wastewater treatment based on an activated sludge process, by microfiltration (8, 3, 0.45 and 0.22mum) and ultrafiltration (100, 50, 30 and 3kDa) of the wastewater samples into different size fractions. Various parameters were measured on each fraction: molecular weight distribution (MWD) using high performance size exclusion chromatography (HPSEC), total organic carbon (TOC), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (Tot-P), phosphate phosphorus (PO(4)-P), electrical conductivity, pH, turbidity, charge quantity and zeta potential. The MWD, TOC and COD(Cr) results indicated that the majority of the material present in both the influent and effluent was in the medium molecular weight (MW) range (i.e. MW<10kDa) with three main MW sub-fractions. There were no significant differences in the range of the MWD between the influent and effluent samples. The magnitude of the MWD in the effluent was about one half that in the influent, the greatest reduction being in the 6kDa fraction. The 3kDa fractions of both the influent and effluent showed a considerable increase in BOD(7), probably due to the removal of compounds harmful to bacteria in 3kDa ultrafiltration. Influent turbidity decreased considerably in microfiltration (8-0.22mum). As the turbidity was removed by 0.22mum filtration, the anionic charge quantity started to decrease. Particles in the influent and effluent contained 19-29% and 14-20% of the total phosphorus, respectively. The major phosphorus fraction was in the form of soluble phosphate.     

蒸发冷却技术在冷轧厂磨辊间的应用

结合具体工程实例,阐述了蒸发冷却技术在上海高温气候地区采用,并对蒸发冷却系统在磨辊间的应用进行了总结和分析,指出直接蒸发冷却在冷轧厂磨辊间的应用可行,有较大的经济效益和社会效益。     

静压支承轧机振动问题的研究

对一开式大长径比不等面积三油腔静压支承轧机进行了振动信号分析,分别给出了垂直振动,扭振的测试方法,对不同供油压力下的振动进行了频谱分析,最后根据振动信号讨论了新型轧机的振动特性.     

Our visual landscape: Managing the landscape under special consideration of visual aspects

Comprehensive landscape valuation requires an integration of ecological, economical and social values. Landscape image does not only comprise its spatial and structural parts but also the formal visual and cultural aesthetic expression of the landscape. In accordance with this holistic image of the landscape the manifestation of these special elements and visual functions is reflective of the natural and cultural coherence and beauty of long functioning natural and cultivated landscape systems.Landscape image and identity on the one hand and its natural or cultural variety (singular appearances of elements, local peculiarities or particulars) on the other hand are the most important criteria for evaluation, classifying and protecting against possible impacts on the local and regional landscape.However, in addition to the desirability of preserving existing landscape identity, the protection of existing elements, space and functions should not blindly rule out the possibility of new developments emerging with new values.Based on this basic idea value ranking of landscape features and individual expression of partial image sectors can be performed on the level of ecological and sustainable land use and planning culture. In landscape planning it is recognised that such a ranking requires a combination with professional judgement, informed opinion and public preferences as well.To ensure the aims of preservation and development of a high-quality nature and culture beauty special methods of analysis and demonstration of the landscape structure and image are requested. The demonstrated methodical steps should correspond to the objective of a sustainable nature and landscape preservation and development on an aesthetic landscape planning level with guidelines and helpful data for the impact assessment and intervention rule (German nature conservation act).     

Fate of wood extractives in wastewater treatment plants at kraft pulp mills and mechanical pulp mills

Extensive environmental effects of the forest industry led to implementation of activated sludge treatment of effluents in the 1980s. Although the existence of chlorinated compounds in the effluents has decreased, a discussion about the possible environmental effects of elemental-chlorine-free (ECF) and total-chlorine-free (TCF) bleached pulp mill effluents has arisen, and chronic effects on aquatic organisms have still been found. Recently, studies have mainly focussed on wood extractives and their role in the effects of effluents. Resin acids and unsaturated fatty acids are found to be toxic, and plant sterols are reported to have adverse endocrine effects on water organisms already at low concentrations. In this study, Finnish wastewater treatment plants of an ECF kraft pulp mill, a paper mill, and an integrated TCF kraft pulp and paper mill were sampled in order to ascertain how wastewater treatment plants, and especially activated sludge treatments, remove wood extractives. Concentrations of extractives in discharged wastewaters varied between 0.4 and 11 g/t kraft or mechanical pulp, and the concentrations decreased over 95% during the treatment processes. Of the wood extractives, 1.1-64% were adsorbed to biosludge and 35-99% were degraded or transformed to other forms during the activated sludge treatment. A major part of these compounds were discharged in particles (74-99%). The removal of extractives was efficient even in the effluent treatment plant, which was highly loaded during the sampling period.     

铝加工厂轧机用轧制油的消防设计

通过对铝加工过程中冷轧机和铝箔轧机相关工艺流程的描述,分析轧制油在整个工艺流程中的作用以及轧制油本身的特性,通过对《建筑设计防火规范》相关法律条文的深入解读,确定本行业的轧制油使用、回收的布局方式,使其既能够满足消防规范,又能够满足生产工艺的要求。     

细碎对辊机的特点及若干设计问题分析

通过对国外典型细碎对辊机产品的分析比较,对细碎对辊机产品开发设计中的几个关键问题进行了讨论,并给出了若干建议,可供设计时参考。     

不锈钢薄钣轧机滚筒轴线检测

论述用基准尺和全站仪进行轧机滚筒轴线检测和计算的高精度工业测量方法。介绍轴线平行线和垂直线的精密测设、按滚筒圆周点测定滚筒轴线的平差计算和精度评定,以及采用本方法的要点。