公开(公告)号：US4976939A

公开(公告)日：1990-12-11

申请号：US518340

申请日：1990-05-03

申请人： Frederic Fabre ,  Jean-Paul Tognet ,  Claude Magnier

发明人： Frederic Fabre ,  Jean-Paul Tognet ,  Claude Magnier

IPC分类号： C01F17/00 ,  C22B59/00

CPC分类号： C22B59/00 ,  C01F17/0043

摘要： Rare earth hydroxides are recovered from the rare earth ores, e.g., monazite, xenotime and/or bastnasite, by treating the ore with an aqueous solution of an alkali metal hydroxide, under agitation and essentially constant pressure, at a temperature of from about 100.degree. to 220.degree. C., and wherein the ratio by weight of alkali metal hydroxide/ore ranges from about 1.4 to 0.5, e.g., a weight ratio of sodium hydroxide/ore of from about 1 to 0.5, or a weight ratio of potassium hydroxide/ore of from about 1.4 to 0.7.

摘要翻译： 通过在搅拌和基本恒定的压力下，在大约100℃的温度下，用碱金属氢氧化物的水溶液处理矿石，从稀土矿石例如独居石，脱肟矿和/或膨润土中回收稀土氢氧化物。 至220℃，并且其中碱金属氢氧化物/矿石的重量比范围为约1.4至0.5，例如氢氧化钠/矿石的重量比为约1至0.5，或氢氧化钾/ 矿石为约1.4至0.7。

公开(公告)号：US4758412A

公开(公告)日：1988-07-19

申请号：US928546

申请日：1986-11-10

申请人： Frederic Fabre ,  Andre Lambert ,  Jean-Paul Tognet

发明人： Frederic Fabre ,  Andre Lambert ,  Jean-Paul Tognet

IPC分类号： C01B25/30 ,  C01F17/00 ,  C22B59/00

CPC分类号： C01F17/0043 ,  C22B59/00 ,  C01P2004/61 ,  Y02P10/234

摘要： The rare earth hydroxides are improvedly prepared by (i) treating a rare earth phosphate mineral, e.g., monazite or xenotime, with an aqueous solution of an alkali metal hydroxide, (ii) separating therefrom rare earth hydroxide solids and a liquid phase essentially consisting of alkali metal phosphate and alkali metal hydroxide, (iii) crystallizing alkali metal phosphate from said liquid phase, (iv) separating the mother liquor of crystallization therefrom which contains said alkali metal hydroxide, (v) adding calcium oxide or hydroxide to the mother liquor thus separated to form a precipitate therein, (vi) separating said formed precipitate, and (vii) recycling the mother liquor of separation to said treatment step (i).

摘要翻译： 通过（i）用碱金属氢氧化物的水溶液处理稀土磷酸盐矿物，例如独居石或堇青石，稀土氢氧化物，（ii）将稀土氢氧化物固体和基本上由 碱性金属磷酸盐和碱金属氢氧化物，（iii）从所述液相中结晶碱金属磷酸盐，（iv）将含有所述碱金属氢氧化物的结晶母液从其中分离出来，（v）向母液中加入氧化钙或氢氧化物 分离以形成沉淀物，（vi）分离所形成的沉淀物，和（vii）将分离母液循环到所述处理步骤（i）。

公开(公告)号：US6084659A

公开(公告)日：2000-07-04

申请号：US164360

申请日：1998-10-01

申请人： Michel Tulet ,  Frederic Fabre ,  Didier Morancais

发明人： Michel Tulet ,  Frederic Fabre ,  Didier Morancais

IPC分类号： G01J3/28 ,  H04N5/3722 ,  H04N3/15

CPC分类号： G01J3/2803 ,  H04N3/1525 ,  H04N3/155

摘要： The CCD device is suitable for use in a lidar. It has an image zone constituted by a matrix of M lines and N columns of photosensitive sites for receiving a light signal and generating charges, a first memory zone constituted by a matrix of P lines and N columns of non-photosensitive sites, a read-out register having a single line of N sites, and a second memory zone having P lines of N sites, apt to receive in parallel charges contained in the N sites of the read-out register. The first memory zone has a first line of sites apt to receive and to sum charges generated in a respective column of the image zone at the end of each of successive acquisition periods. The second memory zone stores and transfers charges to N sites of a same line of the image zone or the first memory zone whereby accumulating, in each line of the first memory zone, charges accumulated during an observation period and resulting from a plurality of successive summations. At the end of each acquisition period, a timer transfers at high speed the charges present in all sites of all columns of the image zone along the columns to respective sites of the line which achieves summation.

摘要翻译： CCD装置适用于激光雷达。 它具有由M条线和N列光敏位置的矩阵构成的图像区域，用于接收光信号并产生电荷，由P线阵列和N列非感光部位构成的第一存储区域， 具有N个站点的单行的第二存储器区域和具有N个站点的P行的第二存储器区域，易于并行地接收包含在读出寄存器的N个站点中的电荷。 第一存储区具有易于接收的第一行站点，并且在每个连续采集周期结束时对在图像区域的相应列中生成的计费进行加和。 第二存储区域将费用存储并转移到图像区域或第一存储区域的同一行的N个站点，从而在第一存储区域的每一行中积累在观察期间累积的电荷并且由多个连续求和 。 在每个采集周期结束时，定时器高速地将沿图像区域的所有列的所有站点中存在的电荷传送到实现求和的线路的相应位置。

公开(公告)号：US06271269B1

公开(公告)日：2001-08-07

申请号：US08173485

申请日：1993-12-27

申请人： Jean-Yves Chane-Ching ,  Frederic Fabre ,  Christian Herviou

发明人： Jean-Yves Chane-Ching ,  Frederic Fabre ,  Christian Herviou

IPC分类号： B01J1300

CPC分类号： B82Y30/00 ,  B01J13/0026 ,  C01F17/0012 ,  C01G19/00 ,  C01G23/00 ,  C01G25/00 ,  C01G49/00 ,  C01G49/02 ,  C01P2004/62 ,  C01P2004/64 ,  C07C51/414 ,  C07F5/003 ,  C07F7/003 ,  C07F7/2204 ,  C07F15/025 ,  C10L1/10

摘要： Storage-stable sols are comprised of a colloidal dispersion of at least one compound of an acidic metal cation, Mn+, for example, cerium (IV) and/or iron (III), in an organic phase which comprises an organic liquid medium and an organic acid. The title sols are conveniently prepared via the phase transfer of colloidal particulates from a counterpart aqueous colloidal dispersion.

摘要翻译： 储存稳定的溶胶由有机相中的至少一种酸性金属阳离子Mn +（例如铈（IV）和/或铁（III））化合物的胶体分散体组成，所述有机相包含有机液体介质和 有机酸。 标题溶胶通过胶体颗粒从相应的水性胶体分散体的相转移而方便地制备。

公开(公告)号：US4954293A

公开(公告)日：1990-09-04

申请号：US276665

申请日：1988-11-28

申请人： Francinet Cailly ,  Frederic Fabre

发明人： Francinet Cailly ,  Frederic Fabre

IPC分类号： C01F15/00 ,  C01F17/00 ,  C22B59/00

CPC分类号： C22B59/00 ,  C01F15/00 ,  C01F17/0043

摘要： Thorium and rare earth values are separated from a fluoride concentrate thereof, by decomposing such concentrate with aqueous sodium hydroxide under conditions such that the amount of sodium hydroxide is at least 1.4 times the stoichiometric amount and the initial sodium hydroxide/water ratio in the medium of decomposition ranges from 1 to 40% by weight, whereby a precipitate of thorium hydroxide and rare earth hydroxides is produced, together with a solution of sodium fluoride, and then separating the NaF solution therefrom.

摘要翻译： 通过在氢氧化钠的量为化学计量量的至少1.4倍和介质中的初始氢氧化钠/水比例的条件下，将氢氧化钠水溶液分解，将其与氟化物浓缩物分离， 分解范围为1至40重量％，由此产生氢氧化钍和稀土氢氧化物的沉淀物以及氟化钠溶液，然后从其中分离出NaF溶液。