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reduction; polyurethane CLC number: TB53 Document code: A polyurethane cushions were......
CLC─I/Ⅱ型除尘除氡子体净化器何平云锡公司摘 要:CLC─I/Ⅱ型除尘除氡子体净化器由云南锡业公司与东北工学院共同研究成功的CDC─I/Ⅱ型除尘除氧子体净化器,自1990年在北京通过了由中国有色金属工业总公司组织的专家鉴定,经云南省部份有色系统矿山单位使用后,反映良好,目前已销售出近百台.该产品荣获...关键词:......
L/min的流速下(线速度为0.265 mm/s)分离烷基苯类化合物时,柱效高达4100056000 plates/m,该整体柱重现性良好,连续运行的重现性(RSD)低于1.2%.在亲水/离子交换色谱模式下,该整体柱可应用于核苷和碱基的高效分离.关键词:磺酸甜菜碱;两性离子亲水整体柱;制备;毛细管液相色谱(cLC);......
: In order to understand how the material parameters take effects on smoldering and transition from smoldering to flaming combustion, four kinds of different density polyurethane foams and analysis.... The results show that polyurethane foam which has the big density produces more calories in natural and produces high concentrations of CO, and provides plenty of flammable gas. So, it is easier......
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码:A 文章编号:1672-7207(2012)07-2574-06 Preparation of epoxy acrylate resin and its polyurethane modification ZHUANG Cai-hong1, WANG Hui1, YIN Jian2, LIU... investigated by orthogonal experiment. Modification of epoxy acrylic resin using homemade polyurethane prepolymer was studied. The effects of polyurethane addition and epoxy resin types on the performances......
on smoldering propagation of polyurethane foam LU Chang, LI Fang, XIE Yanpeng (School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China) Abstract: In order to understand the mechanism of smoldering of polyurethane foam in different smoke exhaust conditions, smoldering experiments were conducted with vertically-oriented polyurethane foam with natural convection......
难浸金矿生物堆浸研究 王金祥1 (1.西安巨石生物堆浸工程技术有限公司,西安,710100) 摘要:通过实验室柱浸和工业试验,研究难浸金矿的生物堆浸过程.3种不同类型难浸矿石的现场生物堆浸,金浸出率分别提高了41.00%,23.75%和24.53%.金被非金属包裹,碱性矿石,含粘土类矿物过高以及含硫化矿物过低的4种类型难浸矿石,生物堆浸还存在一定的难度. 关键词:难浸金矿; 生物氧化; 堆浸; [全文内容正在添加中] ......
不同条件下细菌池浸浸铀对比试验研究王学刚1,2,刘金辉1,2,孙占学1,2,郑志宏1,吴为荣11. 东华理工大学2. 核资源与环境教育部重点实验室摘 要:对某铀矿石不同条件下细菌池浸浸铀进行了对比试验研究,分析了浸出过程中有关参数的变化规律,对比试验结果表明,池浸I(充气条件)对该铀矿石具有较好的浸出效果,浸出率为87.05%,渣品位为0.0133%,酸耗为2.16%,浸出周期为48d.与池浸II(不充气)相比,铀浸出率可提高10%左右,表明充气条件下细菌池浸方法回收该铀矿石中的铀具有一定的可行性.
某难浸金矿的次氯酸钠浸出研究杨聪,晋克勤,唐道文,王锐贵州大学材料与冶金学院摘 要:采用次氯酸钠对贵州某难浸金矿进行浸出,考察次氯酸钠浓度,浸出时间和温度对金浸出率的影响.结果表明,次氯酸钠不仅可氧化分解矿石中的FeAsS和FeS2,同时还可以打开包裹的金;在下述优化条件下,金浸出率可达到75%以上:次氯酸钠质量浓度0.6mol/L,pH 13~14,液固比6,35℃浸出4h.关键词:难浸金矿;次氯酸钠;浸出;......