公开(公告)号：US10081553B2

公开(公告)日：2018-09-25

申请号：US15552946

申请日：2016-02-12

申请人： Polar Sapphire Ltd.

发明人： Scott Nichol ,  Daniel Smith

IPC分类号： C01F7/00 ,  C01F7/44 ,  C01F7/30 ,  C01F7/20 ,  C01F7/02 ,  C04B35/043

CPC分类号： C01F7/441 ,  C01F7/023 ,  C01F7/20 ,  C01F7/30 ,  C01F7/56 ,  C01P2004/60 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/80 ,  C04B35/043 ,  C04B35/111 ,  C04B2235/322 ,  C04B2235/5445 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/72 ,  C04B2235/725 ,  C04B2235/77

摘要： A method comprising (a) reacting aluminum metal with an acid in the presence of water to provide a first aluminum salt solution comprising an aluminum salt in water, wherein the aluminum salt comprises a reaction product of the acid and the aluminum metal, (b) heating the first aluminum salt solution to provide a mother liquor and solid aluminum salt, (c) optionally, separating the solid aluminum salt from the mother liquor, (d) optionally, dissolving at least a portion of the separated solid aluminum salt with water to provide a second aluminum salt solution, (e) spray roasting the first, or second (if produced), aluminum salt solution to provide an aluminum oxide powder, and (f) washing the aluminum oxide powder, wherein the washed aluminum oxide powder comprises less than about 30 ppmw total metallic and alkyl impurities.

公开(公告)号：US20180044196A1

公开(公告)日：2018-02-15

申请号：US15552946

申请日：2016-02-12

申请人： POLAR SAPPHIRE LTD.

发明人： Scott Nichol ,  Daniel Smith

IPC分类号： C01F7/44 ,  C04B35/043 ,  C01F7/02 ,  C01F7/30 ,  C01F7/20

CPC分类号： C01F7/441 ,  C01F7/023 ,  C01F7/20 ,  C01F7/30 ,  C01F7/56 ,  C01P2004/60 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/80 ,  C04B35/043 ,  C04B35/111 ,  C04B2235/322 ,  C04B2235/5445 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/72 ,  C04B2235/725 ,  C04B2235/77

摘要： A method comprising (a) reacting aluminum metal with an acid in the presence of water to provide a first aluminum salt solution comprising an aluminum salt in water, wherein the aluminum salt comprises a reaction product of the acid and the aluminum metal, (b) heating the first aluminum salt solution to provide a mother liquor and solid aluminum salt, (c) optionally, separating the solid aluminum salt from the mother liquor, (d) optionally, dissolving at least a portion of the separated solid aluminum salt with water to provide a second aluminum salt solution, (e) spray roasting the first, or second (if produced), aluminum salt solution to provide an aluminum oxide powder, and (f) washing the aluminum oxide powder, wherein the washed aluminum oxide powder comprises less than about 30 ppmw total metallic and alkyl impurities.

公开(公告)号：US09751775B2

公开(公告)日：2017-09-05

申请号：US14652161

申请日：2013-12-17

申请人： Polar Sapphire Ltd.

发明人： Scott Nichol

IPC分类号： C01F7/00 ,  C01F7/42 ,  C30B29/20 ,  C30B35/00 ,  C01F7/30 ,  C01F7/44 ,  C01F7/56

CPC分类号： C01F7/42 ,  C01F7/30 ,  C01F7/441 ,  C01F7/56 ,  C01P2006/80 ,  C30B29/20 ,  C30B35/007

摘要： A method comprising contacting high-purity acid, high-purity aluminum, and high-purity water to form a first solution in a heated non-contaminating vessel, wherein the aluminum is employed in at least a stoichiometric amount relative to the acid, heating the first solution in a non-contaminating container, to provide a mother liquor and solid aluminum salts, separating the solid aluminum salts from the mother liquor, heating the solid aluminum salts in a non-contaminating crucible, to provide alpha aluminum oxide, and, optionally, washing the alpha aluminum oxide with high-purity water after some or all of the heating of the solid aluminum salts to provide the alpha aluminum oxide.

公开(公告)号：US20150368117A1

公开(公告)日：2015-12-24

申请号：US14652161

申请日：2013-12-17

申请人： POLAR SAPPHIRE LTD.

发明人： Scott Nichol

IPC分类号： C01F7/42

CPC分类号： C01F7/42 ,  C01F7/30 ,  C01F7/441 ,  C01F7/56 ,  C01P2006/80 ,  C30B29/20 ,  C30B35/007

摘要： A method comprising contacting high-purity acid, high-purity aluminum, and high-purity water to form a first solution in a heated non-contaminating vessel, wherein the aluminum is employed in at least a stoichiometric amount relative to the acid, heating the first solution in a non-contaminating container, to provide a mother liquor and solid aluminum salts, separating the solid aluminum salts from the mother liquor, heating the solid aluminum salts in a non-contaminating crucible, to provide alpha aluminum oxide, and, optionally, washing the alpha aluminum oxide with high-purity water after some or all of the heating of the solid aluminum salts to provide the alpha aluminum oxide.

摘要翻译： 一种方法，包括使高纯度酸，高纯度铝和高纯度水接触，以在加热的非污染容器中形成第一溶液，其中铝相对于酸以至少化学计量的量使用，加热 在非污染容器中的第一溶液，以提供母液和固体铝盐，将固体铝盐与母液分离，加热非污染坩埚中的固体铝盐，以提供α氧化铝，和任选地 ，在部分或全部加热固体铝盐之后用高纯度水洗涤α氧化铝以提供α氧化铝。