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高兴星期五

铁杆木虫 (著名写手)

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实验考查了NH4HCO3和NH3•H2O用量、反应时间、反应温度和焙烧矿的粒度等因素对稀土转型过程的影响,结果表明:当NH4HCO3和NH3•H2O用量为理论量的3倍、反应时间为3h、反应温度为30℃、焙烧矿粒度为30目时,稀土的转型效果最好,稀土的浸出率可以达到30%以上;实验过程中所回收的(NH4)2SO4和CaCl2溶液符合工业标准,可以直接用于工业生产,或作为产品出售;实验过程所制备的稀土氢氧化物的纯度可以达到30%以上,加盐酸溶解后可以转型为稀土氯化物溶液,稀土氯化物溶液直接进行萃取分离为单一稀土或通过蒸发结晶加工成稀土氯化物产品。

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liufengbao100

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foreverhappy

高兴星期五(金币+30, 翻译EPI+1): 2010-05-26 17:16:31
NH4HCO3, and experiments examining the amount of NH3 • H2O, reaction time, temperature and roasting mine size and other factors influence the transformation process on the Earth, the results show that: when the amount of NH4HCO3, and NH3 • H2O 3 times the theoretical amount of reaction time 3h, the reaction temperature is 30 ℃, roasted ore particle size of 30 mesh, the best transformation of rare earth, rare earth leaching rate can reach 30%; experiment in the process of recovery (NH4) 2SO4 and CaCl2 solutions meet industry standards can be directly used for industrial production or as a product for sale; experiment the prepared rare earth hydroxide purity can reach 30%, dissolved by hydrochloric acid and rare earth chloride solution can be transformed into the rare earth chloride solution was extracted directly or by evaporation of a single crystal of rare earth rare earth chloride processing into products.
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2楼2010-05-26 11:11:44
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