论文部分内容阅读
建德县田畈煤矿在学习外地经验的基础上,就地利用丰富的煤矸石资源,采用碱调工艺,从煤矸石中提取出净化水质用的混凝剂—聚合氯化铝,其含铝量(Al_2O_3)为12%—14%,碱化度为60～70%。该矿原采用热分解工艺生产聚合氯化铝,其工艺参数难以控制,煤耗大,成本也高;后来改用碱调工艺。其工艺简单易行,控制方便,技术易于掌握,全流程时间比原来
On the basis of learning field experience, the Tian 畈 coal mine in Jiande County, using abundant coal gangue resources in situ and alkali smelting technology, extracted the coagulant used to purify water from coal gangue, polyaluminum chloride, which contains aluminum The amount of (Al 2 O 3) is 12% -14%, the degree of alkalization is 60 ~ 70%. The mine original thermal decomposition process to produce polyaluminum chloride, the process parameters are difficult to control, coal consumption, high cost; later changed to alkaline transfer process. The process is simple, easy to control, easy to grasp the technology, the whole process than the original time