24小时热门版块排行榜    

查看: 804  |  回复: 1
本帖产生 1 个 翻译EPI ,点击这里进行查看
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

liufengbao100

木虫 (正式写手)

foreverhappy

高兴星期五(金币+30, 翻译EPI+1): 2010-05-26 17:16:45
In view of this situation, we propose to use ammonium bicarbonate (NH4HCO3) and ammonia (NH3 • H2O) on the Baotou rare earth mineral ore for sulfuric acid roasting metathesis treatment, the treated extract by evaporation and crystallization process into the (NH4) 2SO4 products cake for acid leaching, impurity removal, based on the precipitation of calcium and rare earth elements of different pH values, by fractional precipitation of calcium and rare earth elements were isolated, then the form of calcium to calcium, rare earth rare earth hydroxide the form of objects, the rare earth hydroxide dissolved by hydrochloric acid and rare earth chloride solution can be transformed so that it can achieve the recovery of calcium and rare earth elements. In addition, the experimental process of water recycling can be reused.
成长总是痛苦的,加油!
2楼2010-05-26 11:12:19
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 高兴星期五 的主题更新
普通表情 高级回复 (可上传附件)
信息提示
请填处理意见