国外水泥生产技术与设备的发展

阐述了国外水泥生产技术与设备的发展概况，介绍了发达国家在应用新型干法水泥生产新技术方面所取得的成就。新型干法技术的出现，提高了劳动生产率和产品质量，扩大了生产规模，降低了产品热耗，有效控制了烟尘、粉尘、有害气体的排放，文中对生料制备、烧成，水泥粉磨、废渣再利用、自动化过程控制技术、性能各异的特种水泥以及散装水泥的发展等也做了简述。     

固铂建大轮胎公司正式投产

我公司所用TBR三鼓轮胎成型机的定位采用西门子611U控制器驱动伺服电机实现。为达到定位准确并实现反馈，控制模块使用了很多模拟量及开关量I／O点，实际使用中这些点经常损坏，维修费用高且严重影响正常生产。对此，对该控制模块的相关电路进行整改和增加保护措施，以提高设备使用效率、降低维修成本。下面对I／O点损坏原因进行分析，并提出相应的解决措施。     

GJS10/100J高压静电除尘器的改造

牡丹江水泥集团烧成二分厂生料车间现有两台Φ2.6×13m球磨机。原采用拔气筒自然通风,粉尘排放浓度有时达300mg/N·m3。不符合国家环保要求,严重损害职工健康。2000年底,准备引进GJS10/100J型高压静电除尘器,根据牡丹江地区气候:夏季雨水集中,冬季严寒的特点,考察了几家使用该型号收尘器的厂家,发现一些问题:①夏季雨大料湿易堵料,冬季内筒结露,电磁瓶结冰易放电。②电场两极振打无力,内筒体清灰不好。③伞圈低小,遮挡不住大雨雪且易变形。针对以上问题,在安装该收尘器时进行了如下改造:①在除尘器侧面筒体上对称安装电机偏心轮结构振打器…     

Investigation of effective dimensionless numbers on initiation of instability in combustion of moisty organic dust简

In this work, the effect of various effective dimensionless numbers and moisture contents on initiation of instability in combustion of moisty organic dust is calculated. To have reliable model, effect of thermal radiation is taken into account. One- dimensional flame structure is divided into three zones： preheat zone, reaction zone and post-flame zone. To investigate pulsating characteristics of flame, governing equations are rewritten in dimensionless space-time （（, r/, ~） coordinates. By solving these newly achieved governing equations and combining them, which is completely discussed in body of article, a new expression is obtained. By solving this equation, it is possible to predict initiation of instability in organic dust flame. According to the obtained results by increasing Lewis number, threshold of instability happens sooner. On the other hand, pulsating is postponed by increasing Damk6hler number, pyrolysis temperature or moisture content. Also, by considering thermal radiation effect, burning velocity predicted by our model is closer to experimental results.     

Kinetics study of leaching arsenic from Ni-Mo ore roasting in dust mixture of hydrochloric and sulfuric acids

The kinetics of leaching arsenic from Ni-Mo ore roasting dust was investigated. The effects including leaching temperature, particle size of the smelter dust, stirring speed, the coefficient β（the molar ratio of sodium chlorate to arsenic in the smelter dust） and the initial H＋ concentration on leaching arsenic were studied. The results indicate that the leaching of arsenic increases sharply with the decrease of particle size. The orders of reaction with respect to H＋ concentration and particle size are determinted to be 1.136 and 1.806, respectively. The leaching of arsenic reaches 99% under experimental conditions, the apparent activation energy is determined to be 11.157 kJ/mol, which is consistent with the values of activation energy for diffusion model The kinetics equation of leaching arsenic from the roasting dust could be expressed by a semi-empirical equation as 1-2/3η （1 -η）^2/3 = k0（c[H＋]）^1.136ro^-1.806 exp[（-11157 /RT）t].     

露天铝土矿山粉尘治理措施

介绍了露天矿山铝土生产流程、产尘源及产尘设备。针对各产尘源的治理进行了分步分析。提出了治理措施。从而有效降低了铝土露天矿山生产过程中外排及岗位粉尘浓度。     

冲天炉烟气除尘装置的改进

介绍了对冲天炉烟气除尘装置的改进措施,解决了冲天炉烟尘净化问题。实践证明,使用改进后的除尘装置,可取得令人满意的效果。     

翅片管切片成型机的控制系统

基于翅片管切片成型机的加工要求，设计电气控制系统的主控制器采用PLC控制，工件进给采用交流伺服电机控制，切削工作采用变频器无级调速控制。本文论述了翅片管切片成型机控制系统的硬件系统设计以及电气系统实现的关键技术。     

氧化铝熟料中碎粉尘治理的实践与探讨

本文通过分析氧化铝熟料中碎系统工艺流程特点、工艺生产过程中产生的粉尘特性，优选了治理粉尘系统和收尘设施，提出了氧化铝熟料中碎粉尘综合治理的可行方案，解决了氧化铝熟料中碎生产过程中粉尘治理的难题。     

不同实验装置测定粉尘湿润剂的湿润效果相关性

采用滴液法、正向渗透法和反渗湿润法分别研究了3种阴离子型湿润剂对10种硫化矿粉尘的湿润效果,比较了不同实验装置研究湿润剂湿润粉尘的相关性.结果表明:温度约20℃时,使用上述3种实验方法对相同的试剂和粉尘做湿润实验没有相关性,许多情况下还出现完全相反的结果;而对于相同的实验装置,3种湿润剂都具有较好的相关性.由此可以看出,实验室研究湿润剂所采用的方法在原理上要与应用现场的特征相适应,否则就将适得其反.