世界铜矿产量攀升4.7%

据葡萄牙里斯本国际铜研究集团报道,溶剂萃取（ＳＸ）／电解沉积（ＥＷ）法生产的铜产量增长１７．５％,这使１９９９年前９个月的世界铜矿产量,从１９９８年同期的９００万ｔ提高到９４０万ｔ,增长４．７％．ＳＸ／ＥＷ产量的增加是世界精炼铜产量从 １０３８万ｔ提高了 ２．６％到 １０６５万 ｔ的主要原因。 １９９９年前９个月间铜精矿产量提高２．２％,而精炼铜产量提高了１．１％．回收的精铜从１３８万ｔ减少５．３％到１３１万ｔ．再生铜产量上升到１４９ ０００ｔ．残料占精炼铜总产量的 １２．３％,低于１９９８年的１３．…     

奥地利—镁粉厂已于三月份投产

位于奥地利圣乔治市（Ｓｔ．Ｇｅｏｒｇｅｎ）的有色金属冶炼公司（Ｎｏｎ－Ｆｅｒｒｕｍ Ｍｅｔａｌｌｐｕｌｖｅｒ Ｇｅｓ．ｍ．ｂ．Ｈ．εｔ Ｃｏ ＫＧ）投资 ＤＥＭ ６．５ Ｍ建设一座用废镁生产镁粉、粒的工厂,熔炼设备已于 ３月份投产。该厂用雾化法生产镁粉、粒,现有生产能力 ４ｋｔ／ａ, ２００２年再扩大产能到８ｋｔ／ａ。奥地利—镁粉厂已于三月份投产@王祝堂     

循环经济，铅锌产业发展的战略取向

我国10种常用有色金属总产量连续多年居世界第一。2004年我国铅产量为181.2万吨，锌产量为251．9万吨。分别占世界铅锌总产量的26.7％和24.7％，是1995年的2．98倍和2.34倍，年均增幅为12．9％和9．9％。铅锌产量的增加主要是靠扩大采、选、冶企业的规模，随着产量和需求的快速增长，资源、     

锌业可持续发展的战略取向

随着经济的全球化和工业化进程的推进。在巨大的市场需求和锌价不断攀高的诱惑下。我国正掀起新一轮的锌冶炼产能扩张浪潮。2005年。我国锌产量271万吨。与上年同比增长7．6％。据统计，目前在建铅锌冶炼项目90个，计划投资140亿元，另有大量的拟建项目。如果这些项目全部投产，将新增铅产能190万吨。新增锌产能290万吨。前两年电解铝行业盲目投资热似乎又在锌冶炼领域显现。     

对发展铅锌延伸合金加工产品的建议

我国铅锌资源丰富,铅锌工业发展很快。铅锌产量分别于1989年及1991年实现了自给并开始出口。1994年我国出口铅及铅合金和锌及锌合金,分别占当年精铅及精锌世界贸易量的25％与15％。为了发挥我国铅锌资源和铅锌工业的优势,今后除了铅锌生产总量有一定的增长外,更重要的是调整冶炼加工产品结构,发展高附加值的铅锌延伸加工产品。     

在型电站转子钢脱硫的工业性实验研究

针对二重集团公司钢包精炼炉（ＬＲＦ）完成的十炉冶炼转子钢的工业性实验进行了研究。实验结果表明：钢水初始硫「Ｓ」在０．０２０％以下炉渣采用下列组成：ＣａＯ＝５５％～６５％,ＳｉＯ２＝１３％～１５％,ＭｇＯ＝４．０％～６．０％,Ａｌ２Ｏ３＝３％～５％,ＦｅＯ〈０．５％;Ｆｅ２Ｏ３〈０．３％,Σ（ＦｅＯ）〈１．０％,Ｂ＝３．５～５．５和真空搅拌功εＭ·ｔ＝（７０～１００）×＾３Ｊ／ｔ可获得良好的脱硫效果     

陕西东岭集团将再建8万吨竖罐炼锌

东岭集团作为陕西省最大的锌冶炼厂,2007年公司铅锌总产量16．1万吨,其中锌13．9万吨,铅2．2万吨。公司现有冶炼能力为10万吨／年的竖罐炼锌,冶炼能力为10万吨侔的密闭鼓风炉（ISF）,其中铅冶炼能力3万吨侔,锌7万吨/年。2008年8月公司将再投产8万吨竖罐炼锌,建成后陕西东岭集团铅锌冶炼能力将达到28万吨。     

调整Si／C和（Si—Mn）差值用复合孕育处理方法提高灰铸铁强度

在冲天炉生产条件下，通过调整铁水的Ｓｉ／Ｃ和（Ｓｉ－Ｍｎ）值，采用炉前包内部锰铁，以ＲＥ－Ｂａ－Ｃａ和Ｓｉ－Ｃａ合金混合孕育剂，对灰铸铁铁水进行复合孕育处理，试验结果表明，在合适的Ｓｉ／Ｃ和（Ｓｉ－Ｍｎ）值条件下，复合孕育处理可使３．９％￣４．２５％ＣＥ的灰铸铁抗拉强度达到２５０ＭＰａ。     

云南铅锌冶炼企业调研

<正>今年我国电解铅产量出现罕见大幅回落,而精炼锌产量出现显著增长,7月铅锌金属产量分化走势继续延续。近日,北京安泰科信息开发有限公司对云南铅锌冶炼企业进行调研,此次对于了解全国铅锌行业情况具有一定代表性。今年我国电解铅产量出现罕见大幅回落,而精炼锌产量出现显著增长,7月铅锌金属产量分化走势继续延续。据中国有色金属工业协会公布的统计数据,1~7月我国电解铅产量为226.2万吨,同比下降4.1%,其中7月产量为32.0万吨,环比下降16.4%;1~7月我国精炼锌产量为357.7万吨,同比增长10.4%,其中7月产量为50.7万吨,环比下降9.4%。而云南是我国重要的     

我国铅锌原料市场探讨

一、我国铅锌工业的现状及特点 由于八、九十年代我国铅锌冶炼工业的飞速发展,出现了冶炼能力大于采选能力的状况,同时由于供需杠杆作用,采选能力也飞速提高。我国已成为世界铅锌生产大国,锌产量居世界第一,铅产量仅次于美国而居世界第二,铅的产量超出国内需求的30％,锌的产量超出国内需求的25％,业已成为世界最重要的铅锌出口国。     

CR技术与胶片照相技术的特性对比试验

计算机射线成像（CR）技术在成像机理、获得图像的途径上与胶片照相有着本质的区别。为了更好地应用CR技术,对比试验了其在Pb增感屏影响、空间分辨力和散射线影响方面与胶片照相技术的差异。试验得出,Pb增感屏在CR技术照相时起不到增感作用,其主要作用是过滤散射线,提高检测灵敏度。CR技术的分辨力可达50μm甚至25μm,已经达到了与胶片技术相同的实际效果,因此不必要求CR的成像板像素达到胶片颗粒度水平。同时,CR技术对散射线的敏感程度要超过胶片技术,因此要得到较好的图像质量,在CR技术应用中必须注意防护散射线。试验结果使检测人员能更好地了解CR技术与胶片技术的差异,更有效地推广CR技术在工业领域的应用。     

2010年中国钛工业发展报告

回顾了2010年中国钛工业的运行情况,介绍了中国钛工业的生产和进出口情况,分析了海绵钛和钛加工材的价格走势。2010年中国钛工业呈明显回升状态,海绵钛产能突破10万t,产量达到57770t,与2009年相比增长41．6％;钛加工材产量达到38323t,与2009年相比增长53．5％。2010年,中国化工、航空航天、冶金、真空制盐等行业用钛大幅增长,从而使中国钛制品的销售量达到创记录的35636t;特别是化工用钛量已近2万t,成为中国用钛的绝对第一大领域。应更好地把钛材的应用推广工作做好,迎来行业的更大发展。     

Extraction of manganese and zinc from their compound ore by reductive acid leaching

Comprehensive utilization of low grade manganese–zinc compound ore containing lead and silver with a method of reductive acid leaching was studied. According to the ?–pH diagram of Mn–Zn–H₂O system, Mn and Zn can be leached simultaneously in the pH range of –2 to 5.61. The results showed that both hydrogen peroxide and sucrose were effective reductants which could intensify the simultaneous leaching of Mn and Zn into leachate as well as enrich Pb and Ag in the residue. 95.88% of Mn and 99.23% of Zn were extracted when the compound ore was leached with hydrogen peroxide in sulfuric acid media, meanwhile the contents of Pb and Ag in the residue were enriched to 13.21% and 489.36 g/t, respectively. When sucrose was used as the reductant, the leaching efficiencies of Mn and Zn separately achieved 98.26% and 99.62%, and contents of Pb and Ag in the residue were as high as 13.92% and 517.87 g/t, respectively.     

Adsorption difference of Pb2＋ and Zn2＋ in sandstone and breccia

The adsorption difference of Pb2 and Zn2 in sandstone and breccia of Pb-Zn Mine of Yunnan Province was studied by using modem instrument analysis method and fractal geometry theory. The results show that the adsorption capacity (Q) of Pb2 in this two rocks is bigger than that of Zn2 , and Q in various initial concentration solutions obeysv Freundlich experiential formula. The value of l/n on the adsorption Pb2 and Zn2 in sandstone hardly has any difference, but the value ofk differs observably. The adsorption process ofZn2 or Pb2 in sandstone or breccia from solution is fractal-like. The kinetic equation of adsorption is lgp = k - alg t or Q = abt( 1 bt)-1, and the values oflg k, a, and D of brecciaare bigger than those of sandstone at 30 and 50 ℃. These parameters decrease basically with the increase of temperature.The adsorption capacity of Pb2 is almost equal in sandstone and breccia, but the adsorption ability of Zn2 in breccia is stronger than that in sandstone.     

Effectiveness of Croton cajucara Benth on corrosion inhibition of carbon steel in saline medium

Application of corrosion inhibitors is one of the most common practices for the protection of steel structures and their alloys in industry. Since metallic corrosion is a major cause of economic losses in the oil industry, the use of natural inhibitors is an alternative for sustainable technological development. In the present study the effectiveness of the hydroalcoholic extract of the plant species Croton cajucara Benth (CC) dissolved in a microemulsion system (MES‐CC) as well as in dimethyl sulfoxide (DMSO‐CC) was evaluated as corrosion inhibitor on carbon steel AISI 1020 in saline medium. Surface tension measurements of the MES‐CC confirmed micelle formation, and rheological data showed that viscosity varies with temperature. According to potentiodynamic technique and Tafel extrapolation, maximum inhibition efficiencies were effective (93.84% for MES‐CC and 64.73% for DMSO‐CC) with predominant control of cathodic reaction. The adsorption of MES‐CC on carbon steel surface obeys Langmuir adsorption isotherm, while DMSO‐CC was found to follow the Frumkin isotherm.     

Structural,Optical, and Electrical Properties of Zn-Doped CdO Thin Films Fabricated by a Simplified Spray Pyrolysis Technique

Thin films of zinc-doped cadmium oxide with different Zn-doping levels(0, 2, 4, 6, and 8 at%) were deposited on glass substrates by employing an inexpensive, simplified spray technique using perfume atomizer at relatively low substrate temperature(375 °C) compared with the conventional spray method. The effect of Zn doping on the structural,morphological, optical, and electrical properties of the films was investigated. XRD patterns revealed that all the films are polycrystalline in nature having cubic crystal structure with a preferential orientation along the(1 1 1) plane irrespective of Zn-doping level. Zn-doping level causes a slight shift in the(1 1 1) diffraction peak toward higher angle. The crystallite size of the films was found to be in the range of 28–37 nm. The band gap value increases with Zn doping and reaches a maximum of 2.65 eV for the film coated with 6 at% Zn doping and for further higher doping concentration it decreases.Electrical studies indicate that Zn doping causes a reduction in the resistivity of the films and a minimum resistivity of15.69 X cm is observed for the film coated with 6 at% Zn.     

纤维结构W/Cu触头材料的制备

采用织网叠层法,以钨丝为纬线,铜丝为经线编织二维网,将网与铜坯叠放在一起,于真空烧结炉中熔渗的真空熔渗工艺制备纤维结构W/Cu触头材料。试验给出了该工艺的主要工艺参数。与粉末冶金制造的W/Cu触头材料的烧蚀性能作对比,从触头表面在电弧烧蚀后的熔层形貌分析表明,纤维结构W/Cu触头材料呈现较好的抗烧蚀特性。     

正在崛起的中国钛工业

概述了跨入新世纪以来中国钛产业及钛科技的发展概况,分析了中国钛产业快速发展的原因。中国钛工业已经进入快速发展期。自2001年以来,6年时间里钛加工材年增长约30%。2006年,中国的海绵钛和钛材产量分别达到18000t和13000t。最后展望中国钛产业的未来。可以预测,在不久的将来,中国的海绵钛和钛材产量都会超过30000t/a。中国钛工业前景光明。     

热力系统热损耗的红外热像诊断技术

针对火电、冶金及石油化工等热力系统因热漏造成能源浪费的现象,在评述传统测量热损耗方法,如热流测试法、导热传热法、对流传热法及焓降法不足的基础上,提出了利用红外热像诊断技术测量热损耗,评价热力设备保温效果的方法。通过对吉林石化某厂圆柱型热反应器设备进行实测与计算,得到了热漏超标部分导致的直接经济损失。结果表明,红外热像诊断与保温评价方法具有广泛的应用价值。     

锌合金粉在KOH溶液中析氢行为的研究

采用气雾法制备Zn-In,Zn-Pb,Zn-Bi,Zn-Al合金粉,利用收集气体的办法测定了各种合金粉在KOH溶液中的腐蚀速度,确定了In,Pb,Bi,Al四种元素与Zn分别形成合金的最佳含量,随后研究了In,Bi,Al三种金属元素与Zn形成的四元合金的析氢行为。