提高金厂沟梁金矿炭浆厂解吸率的生产实践

通过对解吸电解操作条件的调整和控制，使解吸电解回收率由原来的75．23％提高到91．18％，贫炭含金从原来的518．3g／t降到168．8g／t，缓解了设备处理能力和生产任务之间的矛盾．     

Low linolenate and commercial soybean oils diminish serum HDL cholesterol in young free-living adult females

OBJECTIVE: A mutant soybean line (A16) low in linolenic acid content (2% of oil by weight) was developed to increase oil oxidative stability. It was unknown whether serum lipid and lipoprotein concentrations in humans would be affected should A16 soybean oil (A16 oil) replace commercial soybean oil in diets. This study was conducted to examine the hypothesis that in free-living normolipidemic women, the consumption of A16 oil at approximately 10% of energy intake (en%) would not affect serum lipids and lipoproteins differently than would the consumption of the same amount of a commercial soybean oil with 7% of linolenic acid content. DESIGN: Fifteen free-living female college students consumed the soybean oil daily with regular meals for 9 weeks in different orders, with each test oil being eaten for 3 weeks. During the study, 13 en% was provided by each test oil and a total of 35 en% was from dietary fat. Serum concentrations of total cholesterol, high-density lipoprotein cholesterol (HDL cholesterol), low-density lipoprotein cholesterol (LDL cholesterol) and triacylglycerides (TAG) were measured. Serum total fatty acid patterns were analyzed as well. RESULTS: Each of the three test oils decreased serum total cholesterol, LDL cholesterol and TAG concentrations from the baseline values. The feeding of A16 and commercial soybean oils decreased serum HDL cholesterol significantly compared with coconut oil (p < 0.05). Dietary inclusion of coconut oil increased serum myristic acid significantly more than did either soybean oil (p < 0.01). Serum arachidonic acid concentrations were significantly greater with A16 consumption than with commercial soybean oil consumption (p < 0.001). CONCLUSION: A16 and commercial soybean oils both diminished serum HDL cholesterol. Although the fatty acid composition differed between the two soybean oils, A16 oil and commercial oil had similar effects on serum concentrations of lipoproteins and lipids. With increased oxidative stability, A16 oil is a good alternative to commercial soybean oil.     

余热处理高强度钢筋中冷却模型的研究

本文通过研究余热处理高强度钢筋的控制冷却原理和低碳钢相变规律,建立控制冷却的数学模型。研究表明,建立的数学模型实用可靠,冷却强度可以随化学成分、终轧速度、终轧温度、自回火温度等生产条件的变化而进行逻辑分析,进而确定控冷工艺参数,生产性能合格稳定的钢筋。此外,根据生产条件的不同,冷却程序具有可移植性。     

附着式轧制力智能监测系统

围绕轧制力传感器的轻型化问题讨论了分流测量模型,介绍了附着式传感器的基本原理和智能监测仪表的功能及在中板轧机上的应用.     

用铁精矿生产异性粘结永磁橡塑磁粉的研究

介绍一种利用磁铁矿生产粘结橡塑磁粉的新型方法，探讨了各种添加剂，烧结制度及粒度对磁性能的影响。通过中试证明，此工艺完全可应用于大规模工业生产。     

铁（Ⅲ）－1，10－二氮杂菲－甲基橙三元络合物光度法测定铁的研究

提出了铁（Ⅲ）－１,１０－二氮杂菲（Ｐｈｅｎ）－甲基橙（ＭＯ）三元络合物体系光度法测定Ｆｅ（Ⅲ）的新方法。该方法的灵敏度高（ε＝８．１×１０４）,选择性好,准确可靠,用于测定金属和化学试剂中痕量铁,结果满意。     

PlantSpace在冶金行业自主集成三维整体设计中的应用

在冶金行业自主集成设计中采用PlantSpace软件进行三维整体设计,介绍了PlantSpace三维软件在实际项目中的应用流程,包括绘制系统图,定制软件的项目数据库,建立管道材料等级,建立土建、设备和管线布置三维模型,进行碰撞检查,抽取材料表、二维平面施工图和管道轴侧图以及进行三维模型的实时漫游等具体步骤.     

K3AlF6-Na3AlF6-AlF3铝电解体系密度的研究

采用流体静力称重法研究了K<,3>AlF<,6>-Na<,3>AlF<,6>-AlF<,3>铝电解质体系的密度.探讨了K<,3>AlF<,6>,AlF<,3>含量和温度与K<,3>AlF<,6>-Na<,3>AlF<,6>-AlF<,3>体系密度的关系.实验结果表明:K<,3>AlF<,6>-Na<,3>AlF<,6>-AlF<,3>体系密度与温度成较好的线性关系,温度升高,密度降低;随着AlF<,3>含量的降低,体系的密度对温度的变化更加敏感.相同过热度下,固定KR(钾冰晶石含量),随着AlF3含量的增加,体系的密度呈现出不同的变化规律,相同过热度条件下,对于较低的KR=0.1值,随着AlF<,3>含量的增加,体系的密度逐渐下降,对于较高的KR=0.5值,随着AlF<,3>含量的增加,体系密度先降低后增加,存在最低点.相同过热度下,固定AlF<,3>含量,随着KR增加,体系密度也呈现出不同的变化规律,当AlF<,3>为22%,随着KR增大,体系密度变化不大;当AlF<,3>为26%,30%,随着KR增大,体系密度先降低后增加.     

一种用步进器指令编程的方法及应用

本文介绍了一种用可编程序控制器（ＰＣ）的步进器指令编程的方法。并通过应用实例证明了该方法可以简化逻辑设计避免逻辑竞争。     

镁基大块非晶合金的制备与性能研究

采用铜模浇铸的方法成功制备了最大直径为12mm的Mg65Cu20Ag5Gd10非晶合金,并对其结构、热稳定性能、非晶形成能力、压缩性能及断口形貌进行了分析.结果表明,Mg65Cu20Ag5Gd10具有较强的玻璃形成能力和良好的热稳定性能;合金的断裂强度达895MPa,弹性应变为2.35%.