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冰铜粒化水沉降试验研究及浓缩机面积计算
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作者 蓝庆滔 张群英 《现代矿业》 CAS 2024年第10期244-246,共3页
对安徽某企业现有“双闪”铜冶炼系统粒化水样品进行沉降试验,以熟石灰作为絮凝剂及pH值调控剂,在pH=11.88、温度为45℃的条件下,集体颗粒沉降速度为0.71 mm/s,沉降30 min后上清液浊度小于50 NTU,沉降溢流回用水质量能满足粒化水循环系... 对安徽某企业现有“双闪”铜冶炼系统粒化水样品进行沉降试验,以熟石灰作为絮凝剂及pH值调控剂,在pH=11.88、温度为45℃的条件下,集体颗粒沉降速度为0.71 mm/s,沉降30 min后上清液浊度小于50 NTU,沉降溢流回用水质量能满足粒化水循环系统的稳定运行要求。以沉降试验结果为依据,进行浓缩机面积计算,得出在新建项目粒化水用量为1 400 t/h时,选用φ28 m浓缩机,可以保证溢流水不跑浑。研究结果可以为新建项目的粒化水循环系统浓缩机优化选型提供依据。 展开更多
关键词 “双闪”冶炼 冰铜粒化 沉降试验 浓缩机面积
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Study on Implementation of Urban-Rural Land Linking Policy from Perspective of Urbanization
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作者 CHEN Ke 《China City Planning Review》 2012年第2期6-13,共8页
China launched the policy of linking the increase in urban development land with the decrease in rural development land① in 2003. The paper focuses on two typical paths for implementation of the policy, i.e., exchang... China launched the policy of linking the increase in urban development land with the decrease in rural development land① in 2003. The paper focuses on two typical paths for implementation of the policy, i.e., exchanging homestead for urban housing, and "double exchanges." Based on a study on urbanization development, the paper analyzes the institutional innovation in the case of exchanging homestead for house in Huaming Town, as well as the jeopardization of "double exchanges," before summarizing the applicability of the "urban-rural land linking" policy. At the end, the paper emphasizes that in order to address the problems emerging during various kinds of urbanization, the linking policy should be carried out in accordance with local conditions and circumstances. 展开更多
关键词 linking the increase in urban development land with the decrease in rural development land policy implementation URBANIZATION exchanging homestead for urban housing 'double exchanges'
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