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    • 1. 发明申请
    • Method For Treating Suspensions Of Solid Particles In Water Using Post Hydrolyzed Polymers
    • 使用后水解聚合物处理水中固体颗粒悬浮液的方法
    • US20140238943A1
    • 2014-08-28
    • US13774391
    • 2013-02-22
    • Cedrick FaveroScott RameyTrong Dang-Vu
    • Cedrick FaveroScott RameyTrong Dang-Vu
    • C02F1/52
    • C02F1/5272C02F1/56C02F2103/10
    • A method for treating a suspension of mineral particles in water, such as mineral tailings, includes the step of contacting the suspension of mineral particles in water with a specific water-soluble polymer. This polymer is preferably a water-soluble polymer having an anionicity of between 10 to 55 mol %, and more preferably 20 to 50 mol %. Furthermore, this polymer has preferably a molecular weight between 15 and 40 million daltons, and more preferably between 18 and 30 million. The method involves adding the specific polymer into a thickener containing the tailings to treat, and/or during transport of the suspension to a deposition area for dewatering and solidification, or to the tailings to treat followed by a mechanical treatment such as centrifugation, screw press and filtration.
    • 用于处理矿物颗粒在水中的悬浮液如矿物尾矿的方法包括使矿物颗粒在水中的悬浮液与特定的水溶性聚合物接触的步骤。 该聚合物优选为阴离子性为10〜55摩尔%,更优选为20〜50摩尔%的水溶性聚合物。 此外,该聚合物的分子量优选为15〜4000万道尔顿,更优选为18〜3000万。 该方法包括将特定的聚合物加入到含有尾矿的增稠剂中,和/或在将悬浮液输送到用于脱水和固化的沉积区域中或在尾矿处理之后进行机械处理如离心,螺旋压榨 并过滤。
    • 4. 发明申请
    • SAMPLING PROCEDURE FOR POLYMER-BASED SOLUTIONS USED IN UNDERGROUND FORMATIONS
    • 采用基于聚合物的解决方案在地下采样中的采样程序
    • US20140134749A1
    • 2014-05-15
    • US14130015
    • 2012-07-02
    • Cedrick Favero
    • Cedrick Favero
    • G01N1/34
    • G01N1/34C09K8/588C09K8/882G01N1/2035G01N33/2823Y10T436/2525
    • This invention concerns a sampling procedure for an aqueous hydrosoluble polymer solution flowing in a main circuit, enabling a sample to be collected to undergo at least one analysis under ambient air giving at least one property of the hydrosoluble polymer characterised in that a stabilizing solution is added to the aqueous hydrosoluble polymer solution, according to a discontinuous addition method, before or after sampling from the main circuit, so as to obtain a sample comprising a mixture of aqueous hydrosoluble polymer solution and stabilizing solution in which the hydrosoluble polymer is protected against attacks it may undergo in an atmosphere containing at least 10% by volume of oxygen.
    • 本发明涉及在主回路中流动的含水可溶性聚合物溶液的取样程序,使得能够收集样品以在环境空气下进行至少一次分析,得到水溶性聚合物的至少一种性质,其特征在于加入稳定溶液 根据不连续的添加方法,在从主回路取样之前或之后,向含水可溶性聚合物溶液提供水溶性聚合物溶液,以获得包含水溶性聚合物溶液和稳定溶液的混合物的样品,其中保护水溶性聚合物免受攻击 可以在含有至少10体积%氧气的气氛中进行。
    • 7. 发明授权
    • Synthesis of N-vinylformamide
    • N-乙烯基甲酰胺的合成
    • US07026511B2
    • 2006-04-11
    • US10789900
    • 2004-02-27
    • Eric J. BeckmanToby M. ChapmanCedrick FaveroChristopher C. CapelliHarold E. SwiftWilliam Eamon Carroll
    • Eric J. BeckmanToby M. ChapmanCedrick FaveroChristopher C. CapelliHarold E. SwiftWilliam Eamon Carroll
    • C07C233/03
    • C07C231/12C07C233/03C07C233/05
    • A process to produce N-vinylformamide includes the steps of: reacting hydroxyethyl formamide with a reactant comprising at least one cyclic anhydride group to form an ester, and dissociating the ester via heat in a thin film evaporation to synthesize N-vinylformamide and a compound comprising at least one diacid group, the N-vinylformamide separating from the diacid during the thin film evaporation. The reactant including at least one cyclic anhydride group can, for example, be succinic anhydride, maleic anhydride, phthalic anhydride, (2-docecen-1-yl)succinic anhydride, exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic anhydride or a polymer including at least one cyclic anhydride group. A process to produce N-vinylformamide comprises the steps of: mixing acetaldehyde, formamide and a source of anhydride in a single reaction vessel, reacting the acetaldehyde, formamide and the source of anhydride in the reaction vessel under pressure, dissociating an ester formed by a reaction between the source of anhydride and hydroxyethyl formamide formed in the reaction vessel to synthesize N-vinylformamide and a compound comprising at least one diacid group.
    • 制备N-乙烯基甲酰胺的方法包括以下步骤:使羟乙基甲酰胺与包含至少一个环状酸酐基团的反应物反应形成酯,并在薄膜蒸发中通过热解离酯以合成N-乙烯基甲酰胺和包含 至少一个二酸基团,在薄膜蒸发期间与二酸分离的N-乙烯基甲酰胺。 包括至少一个环状酸酐基团的反应物可以是例如琥珀酸酐,马来酸酐,邻苯二甲酸酐,(2-多烯-1-基)琥珀酸酐,外部-3,6-环氧-1,2,3, 6-四氢邻苯二甲酸酐或包含至少一个环状酸酐基团的聚合物。 制备N-乙烯基甲酰胺的方法包括以下步骤:将乙醛,甲酰胺和酸酐源在单个反应容器中混合,在压力下使乙醛,甲酰胺和酸酐源在反应容器中反应,使由 在反应容器中形成的酸酐源和羟乙基甲酰胺之间的反应合成N-乙烯基甲酰胺和包含至少一个二酸基团的化合物。