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1. 发明授权

US4613494A Recovery of fluorine from waste gases 失效
标题翻译：从废气中回收氟
公开(公告)号：US4613494A
公开(公告)日：1986-09-23
申请号：US689787
申请日：1985-01-08
申请人： James C. Barber
发明人： James C. Barber
IPC分类号： C01B9/08 , C01B33/18 , C05B7/00 , C01D3/02 , C01B33/12 , C01D1/16 , C01D11/02
CPC分类号： C01B33/186 , C01B9/08 , C05B7/00 , C01P2002/02 , C01P2006/80
摘要： Fluorine in phosphate ores is present as the mineral fluorapatite. When the ores are digested with sulfuric acid a slurry is formed which can be filtered to make wet-process phosphoric acid. But fluorine compounds are discharged into the surrounding air during digestion and filtration. The fluorine-containing air is scrubbed with water to prevent air pollution. Scrubber water is cooled in ponds and is recycled to the scrubber. However, fluorine compounds are emitted from the cooling ponds and cause air pollution. In the present invention, processes are disclosed for treating fluorine-containing gases without use of cooling ponds thereby eliminating the air pollution problem. A facility is provided for treating fluorine-containing gases wherein fluosilicic acid or fluosilicate salts are converted to a fluoride salt by the addition of an alkaline substance. A slightly acidic scrubber water is concentrated in an absorption tower. When the scrubber water contains nutrients, ammonium is the preferred alkaline substance and the scrubber water is recovered in solid ammonium phosphate fertilizers or in suspension fertilizers. Sodium hydroxide or sodium carbonate are the perferred alkaline substances when sodium cryolite or aluminum fluoride are produced.
摘要翻译：作为矿物氟磷灰石存在磷酸盐矿中的氟。当矿石用硫酸消化时，形成可以过滤以制备湿法磷酸的浆料。但氟化合物在消化和过滤期间排放到周围的空气中。含氟空气用水擦洗以防止空气污染。洗涤水在池塘中冷却并被再循环到洗涤器中。然而，氟化合物从冷却池排出并引起空气污染。在本发明中，公开了用于处理含氟气体而不使用冷却池的方法，从而消除了空气污染问题。提供一种用于处理含氟气体的设备，其中通过加入碱性物质将氟硅酸或氟硅酸盐转化为氟化物盐。稍微酸性的洗涤器水浓缩在吸收塔中。当洗涤器水含有营养物质时，铵是优选的碱性物质，洗涤器水在固体磷酸铵肥料或悬浮肥料中回收。氢氧化钠或碳酸钠是生产钠冰晶石或氟化铝时的优先使用的碱性物质。

2. 发明授权

US3537813A Recovery of lithium from bitterns 失效
标题翻译：从BITTERNS恢复锂
公开(公告)号：US3537813A
公开(公告)日：1970-11-03
申请号：US3537813D
申请日：1968-04-25
申请人： LITHIUM CORP
发明人： NELLI JOSEPH R , ARTHUR THEODORE E JR
IPC分类号： C01D15/04 , C01D11/02
CPC分类号： C01D15/04

3. 发明授权

US3857920A Recovery of lithium carbonate 失效
标题翻译：回收碳酸锂
公开(公告)号：US3857920A
公开(公告)日：1974-12-31
申请号：US16733771
申请日：1971-07-29
申请人： DEPARTMENT OF HEALTH EDUCATION
发明人： GRANTHAM L , YOSIM S
IPC分类号： C01D15/08 , C22B26/12 , C01D11/02 , C01D7/22
CPC分类号： C22B26/12 , C01D15/08 , Y10S423/12
摘要： Lithium carbonate is recovered from an aqueous slurry by first treating the sparingly soluble lithium carbonate with carbon dioxide to convert it to the much more soluble lithium bicarbonate. The bicarbonate solution is next separated from insoluble material present and then decarbonated to precipitate lithium carbonate, which is then recovered. The present process is of particular utility for the recovery of lithium carbonate from fly ash- and coke-containing filter cakes resulting from a process for the treatment of flue gas to remove sulfur dioxide present therein by absorption of the sulfur dioxide in a molten alkali metal carbonate mixture.
摘要翻译：通过首先用二氧化碳处理微溶碳酸锂以将其转化为更易溶解的碳酸氢锂，从含水浆液中回收碳酸锂。然后将碳酸氢盐溶液与存在的不溶物分离，然后脱碳以沉淀碳酸锂，然后回收碳酸锂。本发明的方法特别适用于从通过吸收二氧化硫在熔融碱金属中处理烟道气以除去二氧化硫的方法得到的粉煤灰和含焦炭滤饼中回收碳酸锂碳酸盐混合物。

4. 发明授权

US3755533A Separation and recovery of inorganic lithium salts from other metal salts 失效
标题翻译：从其他金属盐中分离和回收无机锂盐
公开(公告)号：US3755533A
公开(公告)日：1973-08-28
申请号：US3755533D
申请日：1971-11-26
申请人： EXXON RESEARCH ENGINEERING CO
发明人： LANGER A , WHITNEY T
IPC分类号： C01B11/18 , C01D15/00 , C01D11/02
CPC分类号： C01B11/18 , C01D15/00
摘要： INORGANIC LITHIUM SALT MIXTURES ARE SEPARATED INTO COMPONENTS AS WELL AS INORGANIC LITHIUM SALTS ARE SEPARATED FROM OTHER METAL SALTS BY COMPLEXATION WITH A MONOMERIC OR POLYMERIC ORGANIC CHELATING AGENT. THE SALT MAY BE RECOVERED THEREAFTER BY DESTABILIZATION OF THE COMPLEX. THE CHELATING AGENT IS A SECONDARY OR TERTIARY POLYAMINE OR AMINOETHER.

5. 发明授权

US3463606A Separation of lithium isotopes 失效
标题翻译：锂同位素的分离
公开(公告)号：US3463606A
公开(公告)日：1969-08-26
申请号：US3463606D
申请日：1965-06-03
申请人： TNO
发明人： SMIT WILHELM MATTHIJS , ARKENBOUT GERARDUS JOHANNES
IPC分类号： B01D59/30 , C01D11/02
CPC分类号： B01D59/30

6. 发明授权

US3446603A Growth of lithium niobate crystals 失效
标题翻译：锂离子水晶的生长
公开(公告)号：US3446603A
公开(公告)日：1969-05-27
申请号：US3446603D
申请日：1965-07-12
申请人： BELL TELEPHONE LABOR INC
发明人： LOIACONO GABRIEL M , NASSAU KURT
IPC分类号： C01G33/00 , C30B15/00 , C01D11/02
CPC分类号： C01G33/00 , C01P2006/60 , C30B15/00 , C30B29/30 , Y10S117/902
摘要： 1,148,080. Lithium niobate. WESTERN ELECTRIC CO. Inc. 7 July, 1966 [12 July, 1965], No. 30534/66. Heading C1A. [Also in Division B1] Lithium niobate crystals are grown from a melt containing, in addition to the lithium and niobium, from 0À1 to 5 atom per cent based on niobium of molybdenum or tungsten and a seed crystal is used and oriented so that the growth proceeds in a direction forming an angle between 18 and 41 degrees with the polar 'c' axis and the growth occurs on the negative end of the crystal. Preferably the crystal is grown by dipping the seed crystal in the melt and subsequently withdrawing it, and the crystal may be rotated during withdrawal. The lithium/niobium atomic ratio is preferably with Œ5% of unity. The crystals obtained may be annealed by heating in oxygen.

7. 发明授权

US3959442A Preparing single crystals of Li(Ho,Y,Er,Tm,Dy)F4 in HF atmosphere 失效
标题翻译：在HF气氛中制备Li（Ho，Y，Er，Tm，Dy）F4的单晶
公开(公告)号：US3959442A
公开(公告)日：1976-05-25
申请号：US449148
申请日：1974-03-07
申请人： Ricardo C. Pastor , Morton Robinson
发明人： Ricardo C. Pastor , Morton Robinson
IPC分类号： C30B15/00 , H01S3/16 , B01J17/18 , C09K1/04 , C01D11/02
CPC分类号： H01S3/1688 , C30B15/00 , C30B29/12 , Y10S117/906
摘要： Single crystals, useful as laser emission compounds, having the formula ARF.sub.4 wherein A is potassium, sodium, or lithium, and R is holmium, yttrium, erbium, or dysprosium are prepared by a direct congruent melt crystal growth process that yields crystals exhibiting substantially superior physical and chemical characteristics compared to those grown by conventional methods.
摘要翻译：单晶可用作激光发射化合物，其具有式ARF4，其中A为钾，钠或锂，R为钬，钇，铒或镝，通过直接一致的熔体晶体生长方法制备，其产生显示出显着优异的晶体物理和化学特性与通过常规方法生长的物理和化学特性相比。

8. 发明授权

US3872220A Process for the production of lithium chloride 失效
标题翻译：氯化锂生产工艺
公开(公告)号：US3872220A
公开(公告)日：1975-03-18
申请号：US43619574
申请日：1974-01-24
申请人： FOOTE MINERAL CO
发明人： SMITH JR WILLIAM NOVIS
IPC分类号： C01D15/04 , C01D11/02
CPC分类号： C01D15/04
摘要： This invention relates to a process for the production of lithium chloride substantially free of lithium salts of chlorine oxygen acids through substantially quantitative conversion of chlorine in a gas stream to lithium chloride. Chlorine in a gas stream is absorbed in a substantially saturated solution of lithium hydroxide until the lithium hydroxide is converted to a solution of lithium chloride containing lithium salts of chlorine oxygen acids. The latter solution is then treated with ammonia to convert lithium hypochlorite and lithium chlorite present therein to lithium chloride followed by acidification of the solution and treatment with an organic reducing agent to convert lithium chlorate and lithium perchlorate therein to lithium chloride.
摘要翻译：本发明涉及通过将气流中的氯基本上定量地转化为氯化锂，生产基本上不含氯氧酸的锂盐的氯化锂的方法。将气流中的氯吸收在基本上饱和的氢氧化锂溶液中，直到氢氧化锂转化为含有氯氧酸的锂盐的氯化锂溶液。然后用氨处理后者溶液以将其中存在的次氯酸锂和亚氯酸锂转化为氯化锂，然后酸化溶液并用有机还原剂处理以将氯酸锂和其中的高氯酸锂转化为氯化锂。

9. 发明授权

US3761578A Method of preparing purified lithium aluminum chloride 失效
标题翻译：制备纯化的氯化锂铝的方法
公开(公告)号：US3761578A
公开(公告)日：1973-09-25
申请号：US3761578D
申请日：1972-03-09
申请人： ANDERSON S
发明人： ANDERSON S
IPC分类号： C01F7/00 , C01D11/02 , C01F7/56
CPC分类号： C01F7/002
摘要： Purified lithium aluminum chloride (LiAlCl4) is prepared by passing hydrogen chloride gas through a melt of lithium aluminum chloride containing impurities such as water, hydroxides or other inorganic oxygen-containing salts, carbon and iron, to remove at least a portion of the water and oxygen-containing impurities. Thereafter, the melt is heated to a temperature of from about 425* to about 540* C. and chlorine gas is passed through the melt to remove carbon impurities. The melt is cooled to about 190* C. to 260* C. and contacted with aluminum to replace the iron in solution because of its higher electrochemical potential. The purified melt is filtered and cooled. Analysis of a typical product shows less than 300 parts per billion of impurities. The starting lithium aluminum chloride may advantageously be prepared by melting admixture of reagent grade lithium chloride and reagent grade aluminum chloride. Mixture of lithium aluminum chloride and aluminum chloride can be prepared using an excess of reagent grade aluminum chloride reactant.
摘要翻译：通过使氯化氢气体通过含有诸如水，氢氧化物或其它无机含氧盐（碳和铁）的杂质的氯化锂的熔体，以除去至少一部分水和/或其中的至少一部分来制备纯化的氯化锂铝（LiAlCl 4）含氧杂质。此后，将熔体加热至约425℃至约540℃的温度，并将氯气通过熔体以除去碳杂质。将熔体冷却至约190℃至260℃，并与铝接触以替代溶液中的铁，因为它具有较高的电化学势。将纯化的熔体过滤并冷却。典型产品的分析显示不到百亿分之十十分之杂质。起始的氯化锂铝可以有利地通过将试剂级氯化锂和试剂级氯化铝混合来制备。可以使用过量的试剂级氯化铝反应物制备氯化锂铝和氯化铝的混合物。

10. 发明授权

US3558493A Lithium ferrites 失效
标题翻译：石灰石
公开(公告)号：US3558493A
公开(公告)日：1971-01-26
申请号：US3558493D
申请日：1969-05-05
申请人： AMPEX
发明人： WICKHAM DONALD G
IPC分类号： C01G49/00 , C04B35/26 , H01F1/34 , C01D11/02
CPC分类号： C04B35/2616 , C01G49/0027 , C01G49/009 , C04B35/2691
摘要： IN MAKING LITHIUM FERRITES WHEREIN LITHIUM CARBONATE OR OXIDE IS COMBINED WITH AN IRON OXIDE, PROCESSING TIME IS MATERIALLY REDUCED BY INCORPORATING LITHIUM CHLORIDE IN THE MIXTURE. THE LITHIUM CHLORIDE CAUSES THE LITHIUM CARBONATE TO BECOME VERY REACTIVE AND ATTACK THE IRON OXIDE RAPIDLY. AFTER FIRING TO FORM THE DESIRED LITHIUM FERRITE, THE LIHTIUM CHLORIDE IS DISSOLVED OUT OF THE MASS WITH WATER OR OTHER SOLVENT.

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