黑龙江省金龙达经贸有限责任公司

公司成立2002年,公司位于哈尔滨市南岗区中山路258号,企业类型为有限责任公司,经营范围：购销冶金矿产品,冶金炉料,焦炭,生铁,铁合金,金属材料,钢材,有色金属不含稀有金属,化工产品不含危险品,剧毒品,建筑材料,机械设备,炭素材料及石墨制品。     

Study on photodegradation of Azo dye by polyoxometalates/polyvinyl alcohol

A series of photocatalysts, K11[Ln(PW11O39)2]/PVA (Ln=La, Ce, Pr, Nd, Sm) were prepared by K11[Ln(PW11O39)2] (Ln=La, Ce, Pr,Nd, Sm) containing five kinds of lanthanides and polyvinyl alcohol as the support. The catalysts obtained were characterized by Fourier trans-form infrared spectra, UV-vis spectra, powder X-ray diffraction, and scanning electron microscopy, indicating that the structure of K11[Ln(PW11O39)2] and polyvinyl alcohol remained intact, respectively. The photocatalysts exhibited efficient catalytic activity to degrade methyl orange, Congo Red, Ponceau 2R. The maximal degradation conversions of the three kinds of dyes were 99.58%, 47.61%, 72.42%, respectively.     

家长义工：香港校园别样的景致

在香港校园里,常常有这么一群特殊的人,她们每天早早地来到学校,为学生测量体温,观摩学校早会,协助管理图书,课余为学生讲故事,中午帮学生盛饭,甚至为学校编辑刊物,放学为低年级学生辅导作业……俨然是学校的正式教师,其实是学生家长,她们为学校,帮老师做了很多事情,都是义务的,没有任何报酬,在香港,通常把她们称之为“家长义工”。     

Mn(Ⅱ)-EDTA电位滴定铜的催化指示电极及其应用研究

提出了在氨三乙酸(NTA,活化剂)存在下,以Mn(Ⅱ)催化NaIO4氧化结晶紫的反应指示滴定终点,以自制的结晶紫选择性电极为指示电极,Mn(Ⅱ)为滴定剂,EDTA为阻抑剂,催化滴定测定微量铜的新方法.该方法对试剂用量,酸度,温度,滴定剂浓度,滴定速度及干扰消除等进行了探讨,选择了适宜的实验条件.用于火药中微量铜的测定,样品平均回收率为98.17%,相对标准偏差为1.02%,结果与原子吸收光谱法测定结果相符.     

江西铜业：期待矿铜产出

业绩略低于预期第三季度公司实现营业收入1471394万元,同比上涨30.67%,净利润91950万元,同比下降26.9%,每股收益0.30元,前三季度实现营业收入4154476万元,同比上涨45.46%,净利润369876万元,同比增长13.76%,每股收益1.22元,业绩略低于市场的普遍预期。     

铅市分析

11月份以来,LME三个期铅价基本上单边下行,跌至近1150美元,接近10月下旬低点。后市走向,初步分析如下:利空因素:宏观经济陷入收缩或衰退,对铅消费影响最大的汽车行业,同样面临危机。铅消费需求毫无疑问已处于衰减之中。供应来看,一是冶炼厂,中国10月份同比增产21.17%,且从本公司铅精矿进口贸易来看,原料供应充足,因此,近期大量减产的可能性不大。二是近期库存,LME库存持续减少,目前仅4万吨多点,但中国有大量商业库存,且LME库存低的主要原因也是中国出口近零水平所致。     

火焰原子吸收光谱法测定高纯金锭中铜、银、铁、铅、铋、锑

提出了用火焰原子吸收光谱法测定金锭中Cu,Ag,Fe,Pb,Bi,Sb的方法。用乙酸乙脂萃取分离金,水相浓缩后测定6种待测元素,方法的检出限:Cu,Ag,Fe为0.021mg/L,Pb,Bi,Sb为0.24mg/L;回收率94%～106%;RSD小于10.6%。该方法快速、简便,样品用量少,测定结果与ICP AES法和国家标准方法一致。     

人物介绍

中国共产党优秀党员,中国工程院资深院士,国家一级教授,中南大学学术顾问,中国粉末冶金学科奠基人,原中南矿冶学院副院长,原湖南省科协主席,国际著名的材料科学及冶金学家、教育家黄培云同志因病医治无效,于2012年2月6日10时10分在长沙     

理事 张松江

张松江,男,1964年11月生,中共党员,大学本科,冶金高级工程师,铝电解高级技师,现任河南中孚实业股份有限公司副总经理。     

荧光光谱仪在型铁分析中的应用

型铁中Ｓｉ,Ｍｎ,Ｐ,Ｓ四大元素的测定是型铁质量评价的主要内容。以往化学法分析Ｓｉ,Ｍｎ,Ｐ,Ｓ四大元素,劳动强度大,工序繁琐,偶然误差因素多,分析周期长,准确度低。近年来,Ｘ射线荧光光谱仪在冶金、地矿、水泥等分析应用方面,得到迅速发展,它具有自动化程度高,操作简单、快速、准确、非破坏性等优点,本文应用３５３０荧光光谱仪,分析型铁中的Ｓｉ,Ｍｎ,Ｐ,Ｓ四大元素,取得了成功,方法简单、准确、快速。１实验部分１.１仪器和试剂３５３０Ｘ射线荧光光谱仪（日本理学）,Ｒｈ靶,端窗Ｘ射线管;ＰＲ—１０气体;…     

Minimization of Short-Circuiting Flow through Upflow Anaerobic Sludge Blanket Reactor

Performance data of upflow anaerobic sludge blanket (UASB) reactors treating different types of wastewater have been analyzed. A completely stirred tank reactor (CSTR) model with bypass flow was considered for evaluation of the behavior of sludge bed as well as the whole reactor. It demonstrated that the sludge bed in a UASB reactor behaves as a completely stirred tank reactor with bypass flow. The reactor performance has been shown to depend on the short-circuiting flow through the sludge bed. However, the short-circuiting flow depends on design and operational conditions of the reactor. To find out the relationships of various parameters with short-circuiting flow through the sludge bed, dimensional analysis was carried out. Principal component analysis was carried out by taking short-circuiting flow, concentration of the influent, superficial gas velocity, height of the sludge bed, concentration of the biomass in the sludge bed, and flow rate of the influent into consideration. Analysis reveals the relative importance of the parameters on the short-circuiting flow.     

板坯结晶器内三维流场和温度场的有限元分析

针对板坯结晶器,利用有限元软件ANSYS模拟计算结晶器内三维流场和温度场.采用ANSYS中流场和温度场的耦合模块,主要着眼于拉坯速度对流场和温度场的影响,以及影响流场和温度场合理分布的其它重要参数.     

一种提高喷雾通风冷却塔换热效果的方法

冷却塔是干熄焦循环水系统的核心设备,其换热效果直接影响干熄焦发电量和耗水率。马钢干熄焦系统中应用的喷雾通风冷却塔在使用中出现换热效果不佳、壁流严重以及塔体振动等问题。分析了喷雾通风冷却塔的基本原理,建立其物理模型,并使用计算流体力学软件进行数值计算,找出了其换热效果差与壁流有直接的关系。最后提出了一种解决方案,通过对喷嘴缩径提高射流角度,减少了壁流,从而有效地提高了换热效果。     

带旋流导向装置浸入式水口的水模型研究

采用正交实验设计,运用水模型研究方法,分析和研究了采用带有旋流导向装置浸入式水口时结晶器的流场.结果表明,旋流导向装置的安装高度、长度、安装角度、旋转角度和水口浸入深度对结晶器内流场有明显的影响.采用优化参数的旋流导向装置进行实验,不仅结晶器液面波动和结晶器窄边受到的冲击压力显著降低,而且偏流也得到了有效的改善.     

Solvent extraction of La（III） with 2-ethylhexyl phosphoric acid-2-ethylhexyl ester （EHEHPA） by membrane dispersion micro-extractor

The conventional rare earth solvent extraction equipments have many problems such as long mixing time, low processing capacity, large factory area occupation, high energy consumption and so on. In order to solve the problems, many types of equipments were brought out. In this work, studies were carried out on the La（III） extraction process with 2-ethylhexyl phosphoric acid-2-ethylhexyl ester （EHEHPA） by membrane dispersion micro-extractor. Equilibrium studies showed that the initial aqueous pH value 4.15 with the saponification rate 40%was the optimal operation condition. The effects of membrane dispersion micro-extractor operational conditions such as dispersion mode, bulk flow rate and organic phase flow rate on the extraction efficiency were studied. The results showed that when the organic solution was the dispersed phase, the extraction efficiency was higher than that of others. Increasing bulk flow ratio could enhance the extraction efficiency greatly. When the ratio of organic phase flow rate to that of aque-ous phase was 80：80, the extraction efficiency was over 95%. The effect of stripping phase acidity on the La（III） recovery was studied. The results showed that when the stripping phase pH was 2.0, organic phase flow rate to stripping phase flow rate was 20：80;the re-covery efficiency of La（III） can reach 82%.     

AV56-13风机风量自动调节失常一例

文中介绍了一起由于风量自动调节配套的风量测量装置——文氏管和压差变送器的选型错误而造成的调节失常事故，通过分析找出了事故原因并进行了改进。     

气升式吸附塔在CGA工艺中的应用

介绍了气升式吸附塔的设计基础，在实验室小试的基础上，进行了公斤级间歇试验及吨级连续性扩大试验。同下流式吸附槽对比试验结果表明：在相同表观停留时间下，聚团对金的吸附回收率基本相同，但气升式吸附塔无运动部件，操作维修方便，能耗亦相对较低。为日处理３０ｔ金矿的气升式吸附塔ＣＧＡ－工艺选冶厂提供了设计放大的依据。     

SEN底部形状对结晶器内钢液流场和温度场的影响

针对某钢厂板坯连铸结晶器及浸入式水口(SEN)的结构参数,建立了描述结晶器内钢液流动的三维数学模型,应用FLUENT软件对结晶器内钢液的流场和温度场进行耦合计算,分析SEN底部形状对结晶器内流场和温度场的影响,并利用水模试验对钢液的流动行为进行了验证。结果表明:凸底水口出口附近钢液的速度较大,流股的冲击深度较大,使结晶器内高温区下移,不利于凝固坯壳的生长;平底水口自由面速度较大、温度较高,有利于保护渣的熔化,但易产生液面裸露现象;凹底自由面速度较小、温度较低,有利于液面稳定。     

钢铁生产流程的物流对大气环境负荷的影响

应用基准的流图，建立了钢铁生产流程的物流对大气环境负荷影响的分析方法。以某企业的典型流程为例，分析了生产中的各股物流对吨钢或吨材大气环境负荷的影响，指出了影响吨钢或吨材环境负荷的两类因素及减轻环境负荷应采取的措施。     

Numerical Simulation of Fluid Flow and Heat Transfer in Funnel Shaped Mold of Thin Slab Continuous Caster

SymbolList Ab,An———Surfaceareaofbroadfaceandnarrowfaceof moldrespectively,m2;Cp———Effectiveheatcapacity,J·kg-1·K-1;Cp,s———Heatcapacityofsolidphase,J·kg-1·K-1;Cp,l———Heatcapacityofliquidphase,J·kg-1·K-1;Cw———Waterheatcapacity,J·kg-1·