私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:加拿大魁北克省蒙特利爾
  • 郵編:無(wú)
  • 電話(huà):(514) 848-2424 ext.5611
  • 傳真:
  • Email:zhibin.ye@concordia.ca
當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
Polytetrafluoroethylene/TiO2 composite pellets as sulfur adsorbents for pressure oxidization leaching of chalcopyrite
作者:P. Govindaiah, M. Grundy, E. Guerra*, Y. Choi, Z. Ye*
關(guān)鍵字:TiO2, Chalcopyrite, PTFE, TiO2 content, Pulp density
論文來(lái)源:期刊
具體來(lái)源:Metallurgical and Materials Transaction B
發(fā)表時(shí)間:2015年
In this study, we report the use of polytetrafluoroethylene/titanium dioxide (PTFE/TiO2) composite pellets as sulfur adsorbents in the extraction of copper from chalcopyrite by pressure oxidation leaching. PTFE/TiO2 composites of various compositions were prepared by compression molding followed by pelletization. The mass percentage of TiO2 filler in the PTFE matrix was varied from 0 to 35 wt pct. With the use of the composite pellets, significant enhancements in copper leaching were observed, indicating their role as adsorbents for the adsorption of molten elemental sulfur. In particular, the enhancement in copper extraction was increasingly pronounced (from 75 to 89 pct) with the increase of the mass percentage of TiO2 in the composite pellets from 0 to 35 wt pct. This is reasoned to result from the loss of TiO2 domains from the pellet surface, which creates additional rough hydrophobic surface to better capture elemental sulfur. The composite pellet adsorbents show excellent reusability, with the performance well maintained for 10 leaching cycles. In addition, the effectiveness of composite adsorbents at different chalcopyrite pulp densities was also investigated.
主站蜘蛛池模板: 房产| 九寨沟县| 祁连县| 马关县| 婺源县| 阿合奇县| 无为县| 迁西县| 娱乐| 同仁县| 花垣县| 古蔺县| 麻江县| 宁国市| 如皋市| 抚顺市| 乌兰县| 天等县| 修水县| 西宁市| 泽普县| 绥江县| 鱼台县| 句容市| 沿河| 洪江市| 建湖县| 定南县| 西藏| 辽阳县| 高邑县| 长海县| 淄博市| 乐都县| 镇平县| 玛纳斯县| 九台市| 三台县| 城步| 高密市| 宁陵县|