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120tAOD炉烘烤器燃烧加热特性研究袁玲1,朱苗勇1,陈洁2(1.辽宁省沈阳市东北大学材料与冶金学院2.宝山钢铁股份有限公司 不锈钢分公司,上海 201900)摘 要:利用商业软件STAR-CD,对120 t AOD炉烘烤过程的炉衬温度分布及烘烤器的燃烧特性进行了数值模拟研究,模拟结果进行了实际验证.结果表明:烘烤结束时炉壁最高温度可达1 380 K,同一圆周方向上温度最大相差20 K,靠近烟气出口一侧温度稍高;炉壁高度方向上温度最高相差40 K,中下部温度高;炉内烟气流动速度小,温度低,导致炉壁加热不够均匀......
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Trans. Nonferrous Met. Soc. China 24(2014) 2289-2294 Effect of copper on precipitation and baking hardening behavior of Al-Mg-Si alloys Cong-hui LIU, Xin-ming ZHANG, Jian-guo TANG, Xing-xing LIU...-β′′) to GP II (β′′) during final artificial ageing, and finally results in the favorable paint-bake response. However, the one with the copper level of 0.3% does not show significant baking hardening......
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RH真空处理装置预热枪控制系统秦斌1,高爽1,张文锋1(1.湖南省株洲市湖南工业大学电气与信息工程学院)摘 要:RH预热枪系统的主要功能是烘烤真空槽和浸渍管.系统由基础自动化级和过程控制级两级系统构成,其中基础自动化级采用西门子PLC控制器和WinCC上位监控站.在分析了预热枪的工艺过程和控制要求的基础上,实现了按流量模式和曲线加热模式烘烤真空槽的功能.针对温度控制系统的大滞后特点采取了温度-流量串级PID控制方案,严格控制真空槽的升温速度,使真空槽的升温过程符合耐火材料的特性,达到了温度的精确控制.该系统已投......
氯化烘焙-ZLT工艺提金扩大试验李世桢1,石嵩高2,李质毅1,薛丽贤2,左玉明2(1.吉林省长春市长春黄金研究院2.吉林省地质科学研究所)摘 要:介绍了氯化烘焙-ZLT提金工艺处理某难处理金精矿的小型试验及扩大试验研究结果.在试验确定的4个主体作业工艺条件下,扩大试验金的氯化浸出率达95%,最高可达98%.试验结果表明:该工艺具有对原料适应性强,浸金速度快,金回收率高,成本低等显著特点.关键词:氯化烘焙； ZLT工艺； 氯化浸金； 扩大试验； 金； 浸出率......
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operations of cell building, packing, baking, starting-up and normal operations were presented. Cathode inclination angle was 10°. TiB2-coated cathode was adopted. The cell was drily built, carbon...·m2). Test results not only verify the theoretic analysis beforehand, but also prove the feasibility of such kind of cell structure. Key words: drained cathode cell; TiB2 coating; baking; cell noise......
design.An orthogonal array of L8,27 which denotes 7 factors at 2 levels was chosen to consider the various factors relevant to the leaching process: baking time,baking temperature,acid dosage,leaching time,leaching temperature,grind size and dilution.Statistical analysis showed that sulphation baking was a significant step for the leaching of rare earths from the whole-of-ore and optimized leaching......
