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1.发明授权公开(公告)号：US09528170B2
公开(公告)日：2016-12-27
申请号：US14430549
申请日：2012-09-25
发明人： Shangquan Chen , Shichun Li , Xiaohong Li
CPC分类号： C22B19/34 , B82Y40/00 , C01G9/02 , C01P2004/64 , C01P2006/12 , C01P2006/80 , C22B7/02 , C22B19/24 , C22B19/30 , Y02P10/234
摘要： Disclosed is a method for producing a high-purity nanometer zinc oxide from steel plant smoke and dust by ammonia decarburization. The method comprises: leaching with an ammonia water-ammonium carbonate solution as a leaching agent, adding 0.3-0.5 kg of sodium fluorosilicate to per cubic meter of the leaching agent to obtain a leaching solution, then adding 50-60 kg slaked lime to per cubic meter of the leached solution to carry out decarburization with heating, and carrying out purification and impurity removal and then refining treatment. According to the method, the ammonia process is used for treating smoke and dust, and the existing ammonia process is adaptively improved, the leaching speed and the leaching rate of zinc in the smoke and dust are improved, and the zinc oxide with the purity of more than 99.7% can be obtained; the treatment method of the present invention is characterized by low energy consumption and high efficiency, the leaching agent can be recycled, and thoroughly solves the problem of zinc load of steel plant furnace smoke and dust, thereby meeting the requirement of the steel plant on purification of the harmful components comprising zinc and alkali metals and achieving good production circulation.
摘要翻译： 公开了一种通过氨脱碳从钢厂烟尘制备高纯度纳米氧化锌的方法。 该方法包括：用氨水 - 碳酸铵溶液作为浸出剂浸出，向每立方米的浸出剂中加入0.3-0.5kg的氟硅酸钠，得到浸出溶液，然后加入50-60kg熟石灰 立方米的浸出液进行加热脱碳，进行净化除杂，然后进行精炼处理。 根据该方法，氨法用于处理烟尘，现有氨工艺得到适应性改善，提高了烟尘中锌的浸出速度和浸出率，纯度为 超过99.7％可以获得; 本发明的处理方法的特点是能耗低，效率高，浸出剂可循环使用，彻底解决了钢厂烟灰尘的锌负荷问题，满足钢厂净化要求 的有害成分包括锌和碱金属，并实现良好的生产循环。
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2.发明申请Method for Producing a High-purity Nanometer Zinc Oxide from Low-grade Zinc Oxide Ore by Ammonia Decarburization 有权通过氨脱碳生产低品位氧化锌矿的高纯度纳米氧化锌的方法公开(公告)号：US20150240327A1
公开(公告)日：2015-08-27
申请号：US14430547
申请日：2012-09-25
发明人： Shangquan Chen , Shichun Li , Xiaohong Li
CPC分类号： C22B19/34 , B82Y40/00 , C01G9/02 , C01P2004/64 , C01P2006/12 , C01P2006/80 , C22B3/14 , C22B3/44 , C22B19/02 , C22B19/24 , Y02P10/234
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.
摘要翻译： 公开了一种通过氨脱碳从低品位氧化锌矿石制备纳米氧化锌的方法。 该方法包括：以氨水 - 碳酸氢铵溶液为浸出剂; 向每立方米浸出剂中加入0.3-0.5kg氟硅酸钠; 浸出低浓度氧化锌矿石; 并向立方米浸出液中加入50-60kg熟石灰进行脱碳处理。 得到的纳米氧化锌粉末的纯度为99.7％以上，粒度分布（平均粒径为10-28nm），比表面积为107m 2 / g以上，流动性好，分散性好。 本发明的处理方法能量消耗低，效率高，浸出剂可循环使用。 经过浸出处理的最终浸出残渣，不破坏原矿物组成相组成，仍可用于制砖，实现经济环保的双重目的，具有较高的经济价值和社会价值。
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3.发明授权Method for producing nanometer lithopone from electrolytic zinc acid leaching residue 有权从电解锌酸浸渣中制备纳米立德粉的方法公开(公告)号：US09346934B2
公开(公告)日：2016-05-24
申请号：US14430550
申请日：2012-09-25
发明人： Shangquan Chen , Shichun Li , Xiaohong Li
CPC分类号： C08K3/30 , B82Y40/00 , C01G9/08 , C01P2004/64 , C08K2003/3036 , C08K2003/3045 , C09C1/06 , Y02P20/582
摘要： Disclosed is a method for producing nanometer lithopone from electrolytic zinc acid leaching residue. The method comprises specific steps of: leaching, purifying, carrying out a metathetical reaction, washing, smashing and the like. Through these steps, zinc is selectively leached out by an ammonia-ammonium sulfate process; and iron and arsenic are removed by ammonium persulfate, heavy metal elements such as nickel, copper, lead, cadmium and the like are removed by sulfurization method and zinc powder replacement method; and a metathetical reaction is carried out to obtain an nZnS—BaSO4 crystalline filter cake, the crystalline filter cake is dried and smashed to obtain a nanometer lithopone product. The zinc in the acid leaching residue can be recycled effectively by this method. The ammonia leaching method is used as the technical means of effectively treating the acid leaching residue, the obtained lithopone product is good in quality, and sulfate radicals needed in the production are provided by the acid leaching residue itself, so that the resource utilization of the acid leaching residue is implemented; and in addition, the production cost is low, and the operation is simple.
摘要翻译： 公开了一种从电解锌酸浸出渣中制备纳米立德粉的方法。 该方法包括：浸出，净化，进行微量反应，洗涤，粉碎等的具体步骤。 通过这些步骤，锌通过氨 - 硫酸铵方法选择性地浸出; 通过硫酸铵除去铁和砷，通过硫化法和锌粉替代法除去重金属元素如镍，铜，铅，镉等; 并进行微观反应以获得nZnS-BaSO 4结晶滤饼，将结晶滤饼干燥并粉碎，得到纳米立德粉产品。 酸浸渣中的锌可以通过这种方法有效回收。 使用氨浸法作为有效处理酸浸渣的技术手段，得到的立德粉产品质量好，生产中所需的硫酸根自身由酸浸渣本身提供，使资源利用 实施酸浸渣; 另外生产成本低，操作简单。
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4.发明授权Method for producing a high-purity nanometer zinc oxide from low-grade zinc oxide ore by ammonia decarburization 有权通过氨脱碳从低品位氧化锌矿石生产高纯度纳米氧化锌的方法公开(公告)号：US09512502B2
公开(公告)日：2016-12-06
申请号：US14430547
申请日：2012-09-25
发明人： Shangquan Chen , Shichun Li , Xiaohong Li
CPC分类号： C22B19/34 , B82Y40/00 , C01G9/02 , C01P2004/64 , C01P2006/12 , C01P2006/80 , C22B3/14 , C22B3/44 , C22B19/02 , C22B19/24 , Y02P10/234
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.
摘要翻译： 公开了一种通过氨脱碳从低品位氧化锌矿石制备纳米氧化锌的方法。 该方法包括：以氨水 - 碳酸氢铵溶液为浸出剂; 向每立方米浸出剂中加入0.3-0.5kg氟硅酸钠; 浸出低浓度氧化锌矿石; 并向立方米浸出液中加入50-60kg熟石灰进行脱碳处理。 得到的纳米氧化锌粉末的纯度为99.7％以上，粒度分布（平均粒径为10-28nm），比表面积为107m 2 / g以上，流动性好，分散性好。 本发明的处理方法能量消耗低，效率高，浸出剂可循环使用。 经过浸出处理的最终浸出残渣，不破坏原矿物组成相组成，仍可用于制砖，实现经济环保的双重目的，具有较高的经济价值和社会价值。
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5.发明授权公开(公告)号：US09394183B2
公开(公告)日：2016-07-19
申请号：US14430543
申请日：2012-09-25
发明人： Shangquan Chen , Shichun Li , Xiaohong Li
CPC分类号： C01G9/02 , B82Y40/00 , C01P2006/12 , C01P2006/80
摘要： Disclosed is a method for producing a high-purity nanometer zinc oxide from electrolytic zinc acid leaching residues by ammonia decarburization. The method comprises: adding 0.3-0.5 kg of sodium fluorosilicate to per cubic meter of ammonia water-ammonium bicarbonate solution when leaching, and then adding 30-60 kg of slaked lime to per cubic meter of a leached solution for carrying out decarburization and refining treatment. The present invention obtained nanometer zinc oxide powder has purity of 99.7% or up, uniform particle size distribution (average particle size of 10-30 nm), specific surface area of 105 m2/g or up, good fluidity and good dispersity. The treatment method is characterized by low energy consumption and high efficiency; all valuable and harmful heavy metals in the electrolytic zinc acid leaching residues are leached out to be reasonably utilized and cleaned with water, so that the obtained final leached residues are converted from electrolytic zinc acid leaching residues as high hazard wastes into ordinary solid wastes. It obtained good economic benefit and social benefit.
摘要翻译： 公开了一种通过氨脱碳从电解锌酸浸出残渣生产高纯度纳米氧化锌的方法。 该方法包括：在浸出时向每立方米氨水 - 碳酸氢铵溶液中加入0.3-0.5kg氟硅酸钠，然后向立方米的浸出溶液中加入30-60kg熟石灰进行脱碳和精炼 治疗。 本发明得到的纳米氧化锌粉末的纯度为99.7％以上，粒径分布均匀（平均粒径10-30nm），比表面积为105m 2 / g以上，流动性好，分散性好。 治疗方法的特点是能耗低，效率高; 电解锌酸浸出残渣中所有有价值和有害的重金属被淋洗出来，以合理利用和清洁水，从而将所得的最终浸出残渣从电解锌酸浸出残渣转化为普通固体废物。 取得了良好的经济效益和社会效益。
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