首页>
外国专利>
Method for Producing a High-purity Nanometer Zinc Oxide from Low-grade Zinc Oxide Ore by Ammonia Decarburization
Method for Producing a High-purity Nanometer Zinc Oxide from Low-grade Zinc Oxide Ore by Ammonia Decarburization
展开▼
机译:氨脱碳由低品位氧化锌矿生产高纯度纳米氧化锌的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Disclosed is a method for producing a nanometer zinc oxide from low-grade zinc oxide ore by ammonia decarburization. The method comprises: taking ammonia water-ammonium bicarbonate solution as a leaching agent; adding 0.3-0.5 kg sodium fluorosilicate to per cubic meter of the leaching agent; leaching low-grade zinc oxide ore with the leaching agent; and adding 50-60 kg slaked lime to per cubic meter of leached solution to carry out decarburization treatment. The obtained nanometer zinc oxide powder has purity of 99.7% or up, uniform particle size distribution (average particle size of 10-28 nm), specific surface area of 107 m2/g or up, good fluidity and good dispersity. The treatment method of the present invention is low in energy consumption and high in efficiency, and the leaching agent can be recycled. The final leached residue subject to the leaching treatment, without destruction of original mineral component phase composition, can still be used for brick making, so as to achieve dual purposes of economy and environment protection, and has a high economic value and social value.
展开▼
机译:本发明公开了一种通过氨脱碳从低品位氧化锌矿石生产纳米氧化锌的方法。该方法包括:以氨水-碳酸氢铵溶液为浸出剂;每立方米浸出剂中添加0.3-0.5 kg氟硅酸钠;用浸出剂浸出低品位氧化锌矿石;在每立方米浸出液中加入50-60公斤熟石灰进行脱碳处理。所得纳米氧化锌粉的纯度为99.7%以上,粒径分布均匀(平均粒径为10-28 nm),比表面积为107 m 2 Sup> / g以上,流动性好分散性好本发明的处理方法能耗低,效率高,并且可以回收浸出剂。经过浸提处理的最终浸出残渣,在不破坏原始矿物成分相组成的前提下,仍可用于制砖,达到经济和环境保护的双重目的,具有很高的经济价值和社会价值。
展开▼