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高兴星期五

铁杆木虫 (著名写手)

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针对这一情况,我们提出用碳酸氢铵(NH4HCO3)和氨水(NH3•H2O)对包头稀土矿浓硫酸焙烧矿进行复分解反应处理,处理后的浸液通过蒸发结晶加工成(NH4)2SO4产品,滤饼进行酸浸,除杂后,根据钙和稀土元素沉淀的pH值不同,采用分步沉淀的方法分离钙和稀土元素,此时钙以氯化钙的形式存在,稀土以稀土氢氧化物的形式存在,稀土氢氧化物加盐酸溶解后可以转型为稀土氯化物溶液,这样就可以实现钙和稀土元素的回收。此外,实验过程所回收的水可以循环利用。
可以伤心,但不要太久
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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
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