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71. 发明授权

US4062702A Process for partially insulating surfaces of metal work pieces 失效
标题翻译：金属工件部分绝缘表面的工艺
公开(公告)号：US4062702A
公开(公告)日：1977-12-13
申请号：US605296
申请日：1975-08-18
申请人： Helmut Kunst , Christian Scondo
发明人： Helmut Kunst , Christian Scondo
IPC分类号： C23C8/04 , C23C10/04 , C21D1/48 , C22B35/00
CPC分类号： C23C10/04 , C23C8/04
摘要： Portions of the surface area of metal workpieces are insulated in thermochemical treatment by covering the areas with a self-adhering textile tape having metal powder embedded in its adhesive layer.
摘要翻译：金属工件的表面积的一部分在热化学处理中被绝缘，通过用自身粘附的纺织带覆盖区域，金属粉末嵌入其粘合剂层中。

72. 发明授权

US3699208A Extraction of beryllium from ores 失效
标题翻译：从ORES提取BERYLLIUM
公开(公告)号：US3699208A
公开(公告)日：1972-10-17
申请号：US3699208D
申请日：1970-12-21
申请人： ANACONDA CO
发明人： GRUNIG JAMES K , DAVIS WILLIAM B , AITKENHEAD WILLIAM C
IPC分类号： C22B35/00 , C22B59/00
CPC分类号： C22B35/00
摘要： The extraction and the recovery of beryllium substantially devoid of zinc and other impurities from low and medium grade acid-leachable berllium bearing ores, e.g., bertrandite, is accomplished by acid leaching at a pH below about 2 but above about 1.2, preferably between 1.3 and 1.5, and advantageously with the aid of a soluble fluoride additive to recover the beryllium in solution with relatively small dissolution of such impurities as iron and aluminum.
摘要翻译：通过在pH低于约2，但高于约1.2，优选在1.3和之间的酸浸提下，从低和中等级酸可浸出的含硼矿石，例如二硼酸钠中提取和回收基本上不含锌和其他杂质的铍。 1.5，并且有利地借助于可溶性氟化物添加剂以在溶解中回收铍，其中诸如铁和铝的杂质的溶解相对较小。

73. 发明授权

US3666444A Electrowinning of beryllium 失效
标题翻译：。。。
公开(公告)号：US3666444A
公开(公告)日：1972-05-30
申请号：US3666444D
申请日：1968-12-05
申请人： US INTERIOR
发明人： WONG MORTON M
IPC分类号： C22B35/00 , C22D3/10
CPC分类号： C22B35/00
摘要： A METHOD OF ELECTROWINNING BERYLLIUM FROM A FUSED SALT ELECTROLYTE CONTAINING BERYLLIUM FLUORIDE COMPRISING ELECTROLYZING AT A TEMPERATURE BELOW THE MELTING POINT OF THE BERYLLIUM, FOLLOWED BY HEATING A MIXTURE OF THE FUSED SALT AND BERYLLIUM METAL TO A TEMPERATURE ABOVE THE MELTING POINT OF BERYLLIUM TO COALESCE THE BERYLLIUM. THE BERYLLIUM METAL FINDS UTILITY IN A VARIETY OF APPLICATIONS WHERE HIGH MELTING TEMPERATURE, LIGHT WEIGHT, HIGH STRENGTH, GOOD THERMAL CONDUCTIVITY, LOW THERMAL NEUTRON ABSORPTION CORSS SECTION, AND HIGH SCATTERING CROSS SECTION ARE REQUIRED, E.G., IN SPACE VEHICLES AND NUCLEAR REACTORS.

74. 发明授权

US3615260A Leaching beryllium 失效
标题翻译：浸出BERYLLIUM
公开(公告)号：US3615260A
公开(公告)日：1971-10-26
申请号：US3615260D
申请日：1969-01-02
申请人： UNIV UTAH
发明人： HANSON CHARLES K , WADSWORTH MILTON E
IPC分类号： C01F3/00 , C22B35/00 , C01B33/24
CPC分类号： C01F3/00 , C22B35/00
摘要： A method of leaching beryllium from beryllium ore and separating the beryllium from contaminates in the leach liquor, the leaching method comprising exposing beryllium ore to a concentrated caustic solution under elevated temperature conditions. The beryllium along with certain contaminates is separated from the leach liquor by (a) diluting the solution, adding calcium chloride or other soluble calcium salt, and coprecipitating beryllium, calcium hydroxide and other contaminates, or by (b) diluting the solution, adding calcium hydroxide, or calcium oxide and heating in an autoclave to suitable temperature for an appropriate time interval. Contaminates, including silica, may be removed from the leach solution by adding calcium hydroxide (or oxide) without reducing the pH (without diluting the solution) and heating in an autoclave at suitable temperature for an appropriate time interval. The beryllium under these conditions remains in the solution. Under conditions (a) or (b) the precipitate which includes the beryllium is treated by common chemical procedures for isolation of the beryllium as beryllium hydroxide.

78. 发明授权

US2825105A Metal production and casting 失效
标题翻译：金属生产和铸造
公开(公告)号：US2825105A
公开(公告)日：1958-03-04
申请号：US58468445
申请日：1945-03-24
申请人： MAGEL THEODORE T
发明人： MAGEL THEODORE T
IPC分类号： B22D13/00 , B22D21/02 , C22B5/04 , C22B13/00 , C22B19/00 , C22B26/00 , C22B35/00 , C22B47/00 , C22B60/00 , C22B60/02
CPC分类号： B22D21/02 , B22D13/00 , C22B5/04 , C22B13/00 , C22B19/00 , C22B26/00 , C22B35/00 , C22B47/00 , C22B60/00 , C22B60/0213

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