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浓密机高效化技术在麻峪口矿的应用王永新1(1.河北省张家口市河北怀来宏达矿业有限公司)摘 要:根据生产中尾矿处理的需要,对普通浓密机进行了高效化技术改造.改造后的浓密机不但解决了溢流水跑浑问题,提高了回水水质,同时提高了尾矿处理能力,减少了尾矿输送量,降低了尾矿输送成本.关键词:浓密机; 高效化改造; 尾矿输送......
and utilization 我国是世界上干电池生产和消费大国.据资料统计,20世纪末我国干电池产量约150亿只,占世界总量的50%[1-5],其中使用量最大的是锌锰电池.废旧的锌锰电池中汞和镉是剧毒污染物,对环境的污染已引起公众,媒体和环境保护部门的普遍关注[6-10].但废旧电池的汞和镉又是十分贵重的金属,目前对于锌锰电池的回收利用技术主要是湿法冶金和火法冶金[11-14].采用传统的冶金技术回收锌......
硫酸渣配加磁铁矿制备氧化球团试验研究白国华1,周晓青1(1.湖南省长沙市中南大学资源加工与生物工程学院钢铁系)摘 要:对硫酸渣配加33%的磁铁矿进行了球团试验研究,研究表明:无预处理时所得生球质量极差,润磨是改善生球质量的有效手段,在添加1.0%膨润土,润磨时间4min,润磨水分10%,造球时间10min的条件下可得到满足生产要求的生球;该生球在链篦机-回转窑模拟试验中,预热温度900℃,时间6min,焙烧温度1220℃,时间10min的条件下,可得物理强度及化学组成均满足高炉要求的球团矿,且其脱硫率高,冶金性......
diffraction (XRD) was used to characterize some of the Mg-La alloy products and the sludges. As the content of MgO or La2O3 in the electrolyte increased, both the current efficiency and the mass of alloy... on both the current efficiency and the mass of alloy product. XRD studies confirmed the formation of LaOCl when MgO or La2O3 was added into the electrolyte. The formation of LaOCl sludge would be the main......
for the clamping efficiency and compensating dosage of the chuck was developed. The investigation performed shows that the clamping efficiency of chuck not only directly affects the coefficient of force transfer but also the stability of static clamping force against the deterioration of the lubrication. The chuck structure which has a higher clamping efficiency will have a fewer static clamping......
and grain falling and improves the current efficiency. But the influences of homogenization on the open circuit potential, operating potential and dissolving behaviour are unobvious. The anode current efficiency of water-quenched samples is biggest. Key words: heat treatment; aluminium alloys; sacrificial anode; current efficiency 纯Al中添加一种或多种合金元素, 如Zn, In, Cd, Si, Sn, Mg, Ti可制得Al-Zn-In系合金......
10 April 2006; accepted 25 April 2006 Abstract: In order to find the ways to improve the elimination efficiency with high frequency magnetic field, a mathematical model of electromagnetic elimination... of the 5 μm non-metallic inclusions is more than 240 s. When B0 is 0.03 T, the diameter of the tubule is 8 mm and elimination time is more than 30 s, the elimination efficiency of 5μm, 10 μm and 30 μm non......
; (5) 2.1.1 Na2S浓度的影响 图5所示为Na2S浓度对Te,Sb浸出率的影响.固定条件为浸出温度50 ℃,浸出时间1 h,液固比10. 图5 Na2S浓度对Te,Sb浸出率的影响 Fig. 5 Effect of Na2S concentration on leaching efficiency of tellurium...所述,确定Na2S浓度为40 g/L. 2.1.2 浸出温度的影响 图6所示为浸出温度对Te,Sb浸出率的影响.固定条件为Na2S浓度40 g/L,浸出时间1 h,液固比10. 图6 浸出温度对Te,Sb浸出率的影响 Fig. 6 Effect of leaching temperature on leaching efficiency......
) multicast communications is investigated. To achieve fair energy efficiency (EE) among different multicast groups, the max-min fairness criterion is used as the optimization criterion and the EE..., the proposed algorithms can improve the energy efficiency of the system and the fairness achieved among different multicast groups. Key words: D2D; energy efficiency; resource allocation; max-min fairness......
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