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1.发明授权公开(公告)号：US08394290B2
公开(公告)日：2013-03-12
申请号：US13586025
申请日：2012-08-15
申请人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E. Bode , Xiaojin Harry Li
发明人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E. Bode , Xiaojin Harry Li
摘要： The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scleroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
摘要翻译： 本发明提供了改善氧化铝生产的方法和组合物。 本发明涉及将含有一种或多种多糖的产品加入到生产过程的流体回路内的液体中，其中一种多糖是硬葡聚糖。 使用硬葡聚糖可以具有许多优点，包括以下至少一些：更大的絮凝效果，增加最大有效剂量，更快的沉降速率。 生产过程可以是拜耳过程。
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2.发明申请RECOVERY OF ALUMINA TRIHYDRATE DURING THE BAYER PROCESS USING SCLEROGLUCAN 有权使用SCLEROGLUCAN在贝叶过程中恢复氧化铝三水合物公开(公告)号：US20120305837A1
公开(公告)日：2012-12-06
申请号：US13586025
申请日：2012-08-15
申请人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E. Bode , Xiaojin Harry Li
发明人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E. Bode , Xiaojin Harry Li
IPC分类号： C09K3/00
摘要： The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scleroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
摘要翻译： 本发明提供了改善氧化铝生产的方法和组合物。 本发明涉及将含有一种或多种多糖的产品加入到生产过程的流体回路内的液体中，其中一种多糖是硬葡聚糖。 使用硬葡聚糖可以具有许多优点，包括以下至少一些：更大的絮凝效果，增加最大有效剂量，更快的沉降速率。 生产过程可以是拜耳过程。
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3.发明授权公开(公告)号：US08252266B2
公开(公告)日：2012-08-28
申请号：US12852917
申请日：2010-08-09
申请人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E Bode , Xiaojin Harry Li
发明人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E Bode , Xiaojin Harry Li
摘要： The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scieroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
摘要翻译： 本发明提供了改善氧化铝生产的方法和组合物。 本发明涉及将含有一种或多种多糖的产品加入到生产过程的流体回路内的液体中，其中一种多糖是葡聚糖。 使用硬葡聚糖可以具有许多优点，包括以下至少一些：更大的絮凝效果，增加最大有效剂量，更快的沉降速率。 生产过程可以是拜耳过程。
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4.发明申请RECOVERY OF ALUMINA TRIHYDRATE DURING THE BAYER PROCESS USING SCLEROGLUCAN 有权使用SCLEROGLUCAN在贝叶过程中恢复氧化铝三水合物公开(公告)号：US20120034143A1
公开(公告)日：2012-02-09
申请号：US12852917
申请日：2010-08-09
申请人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E. Bode , Xiaojin Harry Li
发明人： Ryan Chester , John D. Kildea , Jing Wang , Heinrich E. Bode , Xiaojin Harry Li
摘要： The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scieroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
摘要翻译： 本发明提供了改善氧化铝生产的方法和组合物。 本发明涉及将含有一种或多种多糖的产品加入到生产过程的流体回路内的液体中，其中一种多糖是葡聚糖。 使用硬葡聚糖可以具有许多优点，包括以下至少一些：更大的絮凝效果，增加最大有效剂量，更快的沉降速率。 生产过程可以是拜耳过程。
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5.发明申请CHEMICAL TREATMENT TO IMPROVE RED MUD SEPARATION AND WASHING IN THE BAYER PROCESS 有权化学处理提高红砂浆分离和洗涤在贝氏过程中的作用公开(公告)号：US20130112627A1
公开(公告)日：2013-05-09
申请号：US13729744
申请日：2012-12-28
申请人： Carl Urbani , John D. Kildea , Ryan Chester , Jing Wang
发明人： Carl Urbani , John D. Kildea , Ryan Chester , Jing Wang
IPC分类号： C01F7/06
摘要： The invention provides methods and compositions for improving the rheology of red mud removed from Bayer Process liquor. The method includes adding a flocculant and a cross-linked polysaccharide to the liquor. This combination separates the red mud from the liquor but also prevents the red mud from becoming too thick. By preventing excessive thickness, the method allows for the formation of extremely dense amounts of red mud even in primary settlers because the dense red mud can still flow. As a result a user can simultaneously enjoy both easy handling of red mud and also high recovery rates of valuable alumina and caustic from the red mud.
摘要翻译： 本发明提供用于改进从拜耳法溶液中除去的红泥的流变学的方法和组合物。 该方法包括向该液体中加入絮凝剂和交联多糖。 这种组合将红泥与酒分开，但也可防止红泥变得过厚。 通过防止过多的厚度，该方法即使在初级沉降器中也能形成非常密集的红泥，因为致密的红泥仍然可以流动。 因此，用户可以同时享受红泥的容易处理以及红泥中有价值的氧化铝和苛性碱的高回收率。
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公开(公告)号：US20130058847A1
公开(公告)日：2013-03-07
申请号：US13662964
申请日：2012-10-29
申请人： Ryan Chester , Jing Wang , John D. Kildea
发明人： Ryan Chester , Jing Wang , John D. Kildea
IPC分类号： C22B21/06
摘要： The invention provides methods and compositions for improving the production of alumina trihydrate. The invention involves adding one or more cross-linked polysaccharides to a filter used to separate solids from liquid in the Bayer process. The one or more polysaccharides can be a cross-linked polysaccharide (such as cross-linked dextran or cross-linked dihydroxypropyl cellulose). The cross-linked polysaccharides can impart a number of advantages including greater flow rate and lower residual moisture in the resulting cake.
摘要翻译： 本发明提供了改善三水合氧化铝生产的方法和组合物。 本发明涉及将一种或多种交联多糖加入到用于在拜耳法中从液体中分离固体的过滤器。 一种或多种多糖可以是交联的多糖（例如交联的葡聚糖或交联的二羟丙基纤维素）。 交联的多糖可以赋予所得到的蛋糕中许多优点，包括更大的流速和更低的残留水分。
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公开(公告)号：US08029752B2
公开(公告)日：2011-10-04
申请号：US12418988
申请日：2009-04-06
申请人： Timothy La , Ji Cui , John D. Kildea , David H Slinkman , Kim Richard Coleman
发明人： Timothy La , Ji Cui , John D. Kildea , David H Slinkman , Kim Richard Coleman
IPC分类号： C01B33/26
CPC分类号： C01F7/0606 , C01F7/47
摘要： The invention provides a method of controlling silica in the liquor circuit of the Bayer process. The method involves addition of a promoter material to enhance the precipitation of DSP and includes adding one or more silica dispersion materials or dry silica forms to those parts of the circuit where precipitation of DSP and removal of silica from solution is desirable; for example the desilication stage of a Bayer process plant. The removal of DSP from solution reduces silica concentration in the liquor and thereby enables better control of process issues such as silica contamination in alumina product and DSP formation in later stages of the process where precipitation as scale onto vessel walls and equipment is problematical. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.
摘要翻译： 本发明提供了一种在拜耳法的液体回路中控制二氧化硅的方法。 该方法包括添加助催化剂材料以增强DSP的沉淀，并且包括向需要沉淀DSP并从溶液中除去二氧化硅的电路部分添加一种或多种二氧化硅分散体材料或干燥二氧化硅形式; 例如拜耳加工厂的脱硅阶段。 从溶液中除去DSP会降低液体中的二氧化硅浓度，从而可以更好地控制工艺问题，例如氧化铝产品中的二氧化硅污染和在过程中的后期阶段的DSP形成，其中沉淀作用在容器壁和设备上的沉淀是有问题的。 结果，本发明大大降低了操作拜耳工艺的总成本。
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公开(公告)号：US5385586A
公开(公告)日：1995-01-31
申请号：US214928
申请日：1994-03-17
摘要： A method for inhibiting the precipitation of sodium oxalate crystals in a Bayer process liquor. The method comprises the step of adding to the Bayer process liquor, after red mud separation and immediately prior to crystallization of alumina trihydrate, or during crystallization of alumina trihydrate, or during classification of alumina trihydrate, an effective amount of a cationic, surface active, alkylammonium salt compound.
摘要翻译： 一种抑制拜耳法处理液中草酸钠晶体析出的方法。 该方法包括以下步骤：在红泥分离之后立即在三水合氧化铝结晶之前或在三水合氧化铝结晶期间，或在三水合氧化铝分级期间，将有效量的阳离子表面活性剂， 烷基铵盐化合物。
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公开(公告)号：US08545776B2
公开(公告)日：2013-10-01
申请号：US12567116
申请日：2009-09-25
申请人： Timothy La , Ji Cui , John D. Kildea , David H. Slinkman
发明人： Timothy La , Ji Cui , John D. Kildea , David H. Slinkman
CPC分类号： C02F5/105 , C01F7/47 , C22B21/0015
摘要： The invention provides a method of inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment. The method includes adding one or more particular silane based small molecules to the liquor fluid circuit. These scale inhibitors reduce DSP scale formation and thereby increase fluid throughput, increase the amount of time Bayer process equipment can be operational and reduce the need for expensive and dangerous acid washes of Bayer process equipment. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.
摘要翻译： 本发明提供了一种抑制拜耳工艺设备液液中DSP垢积累的方法。 该方法包括将一种或多种特定的硅烷基小分子加入到液体流体回路中。 这些阻垢剂可减少DSP垢的形成，从而增加流体的通量，增加拜耳工艺设备可以运行的时间，并减少对拜耳工艺设备昂贵且危险的酸洗液的需求。 结果，本发明大大降低了操作拜耳工艺的总成本。
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公开(公告)号：US20110212006A1
公开(公告)日：2011-09-01
申请号：US13035124
申请日：2011-02-25
申请人： Timothy La , John D. Kildea , Kevin L. O'Brien , Everett C. Phillips , Kailas B. Sawant , David H. Slinkman , Frederick J. Swiecinski , Ji Cui
发明人： Timothy La , John D. Kildea , Kevin L. O'Brien , Everett C. Phillips , Kailas B. Sawant , David H. Slinkman , Frederick J. Swiecinski , Ji Cui
IPC分类号： C01F7/02
CPC分类号： C01F7/47
摘要： The invention provides a method of inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment. The method includes adding one or more particular silane based small molecules to the liquor fluid circuit. These scale inhibitors reduce DSP scale formation and thereby increase fluid throughput, increase the amount of time Bayer process equipment can be operational and reduce the need for expensive and dangerous acid washes of Bayer process equipment. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.
摘要翻译： 本发明提供了一种抑制拜耳工艺设备液液中DSP垢积累的方法。 该方法包括将一种或多种特定的硅烷基小分子加入到液体流体回路中。 这些阻垢剂可减少DSP垢的形成，从而增加流体的通量，增加拜耳工艺设备可以运行的时间，减少对拜耳工艺设备昂贵且危险的酸洗液的需求。 结果，本发明大大降低了操作拜耳工艺的总成本。
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