空间双层相贯焊接球壳在冰铜储运仓的应用

球面型冰铜储运仓具有单位面积储量大、自动化程度高、便于降低冰铜含水率、对环境污染小、景观好等特点。空间双层相贯焊接的球面网壳结构能充分满足冰铜储运仓的工艺要求,适应仓内储料湿度大、挥发水汽呈弱腐蚀的环境。从建筑设计、结构设计等角度入手,介绍了某冶炼厂项目中空间双层相贯焊接的球面网壳结构在冰铜储运仓的应用,探讨了支座设计和施工安装的要点。     

15.5 m2连续吹炼炉的生产实践

介绍了15.5m2连续吹炼炉的结构,操作条件、改进过程及主要指标.     

原子吸收光谱法测定冰铜粉末样中的低含量铁

在2．0％的硝酸介质中,采用火焰原子吸收光谱法于248．3nm处测定冰铜中低含量的铁量。方法快速稳定,铁在1．0—25ug/mL浓度范围内线性良好。     

电解铜箔表面光亮带产生原因的研究

研究了阴极辊焊缝处组织与电解铜箔表面上形成的光亮带之间的关系。研究发现，在电解铜箔生产中，阴极辊表面焊缝处组织与基体金属组织晶粒尺寸不同级，因此电流在阴极上分布不均匀，在相同时间内沉积的铜箔厚度也不均匀，厚度差引起铜箔色差，形成光亮带；从电结晶的角度看，焊缝处晶粒尺寸大、分布的电流密度低，因此，在焊缝处沉积的铜箔的晶粒尺寸也较大，焊缝斑被原样复制。     

物元模型在湖泊水体富营养化评价中的应用

将湖泊的营养级别、评价指标及其特征值作为物元,对评价标准及实测数据进行归一化后,得到模型的经典域、节域、权系数及关联度,进而建立了湖泊水体富营养化评价模型,并将该模型应用到邛海富营养化综合评价中,为防治湖泊富营养化的进程提供了科学依据。     

A data set for color research

We present an extensive data set for color research that has been made available online ( www.cs. sfu.ca/～colour/data) . The data are especially germane to research into computational color constancy, but we have also aimed to make the data as general as possible, and we anticipate a wide range of benefits to research into computational color science and computer vision. Because data are useful only in context, we provide the details of the collection process, including the camera characterization, and the data used to determine that characterization. The most significant part of the data is 743 images of scenes taken under a carefully chosen set of 11 illuminants. The data set also has several standardized sets of spectra for synthetic data experiments, including some data for fluorescent surfaces. © 2002 Wiley Periodicals, Inc. Col Res Appl, 27, 147–151, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10049     

FUZZY ADAPTIVE CONTROL MODEL FOR PROCESS IN NICKEL MATTE SMELTING FURNACE

ＦＵＺＺＹＡＤＡＰＴＩＶＥＣＯＮＴＲＯＬＭＯＤＥＬＦＯＲＰＲＯＣＥＳＳＩＮＮＩＣＫＥＬＭＡＴＴＥＳＭＥＬＴＩＮＧＦＵＲＮＡＣＥＭｅｉ，ＣｈｉＰｅｎｇ，ＸｉａｏｑｉＺｈｏｕ，Ｊｉｅｍｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＰｈｙｓｉｃｓａｎｄＨｅａ...     

Linear thermal expansion coefficients for an epoxy/glass matte-insulated solid cast transformer

Glass matte/epoxy-reinforced composites provide high-quality electrical insulation, structural integrity, and environmental protection in solid cast transformers. The thermal expansion characteristics of those composites are very important; the thermal expansion must be compatible with the conductor of the transformer in order to minimize stresses and prevent decohesion between the composite and the copper. The glass matte orientation and loading greatly influence the thermal expansion characteristics of the composite. A section was removed from a glass matte/bisphenol A epoxy-insulated, copper conductor wound cylindrical transformer coil. The linear expansion coefficients of the glass matte/epoxy composite were determined by differential dilatometry for three mutually perpendicular orientations with respect to the cylindrical coil. The expected reduction in thermal expansion of the epoxy in the tangential and axial directions due to the glass matte, which produced improved thermal expansion compatibility with the copper windings, was demonstrated. The measured linear thermal expansion coefficients were compared with theoretical values derived from a model for thermal expansion of a two-dimensional isotropic composite filled with fibers randomly oriented in a plane. An alternate composite system used for solid cast coil transformers, consisting of a cycloaliphatic resin filled with silica flour, was also investigated for comparison.Paper presented at the Ninth International Thermal Expansion Symposium, December 8–10, 1986, Pittsburgh, Pennsylvania, U.S.A.     

从冰铜渣中综合回收有价金属的研究

冰铜渣是一种以硫化物为主的高铁高硫物料.由于其组成复杂,有价金属含量低,难以处理.本文针对这种冰铜渣探索了综合回收其中有价金属的各种方法.结果表明,盐酸浸出法简单、易行,并且合理地利用了原料中的铁,一次浸出银、铋的浸出率达到了95%以上.