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公开(公告)号：US4606764A
公开(公告)日：1986-08-19
申请号：US690743
申请日：1985-01-11
CPC分类号： C22B3/44 , C22B15/001 , C22B15/0089 , C22B23/043 , C22B23/0461 , C22B3/08 , Y02P10/234 , Y02P10/236
摘要： The invention comprises the treatment of metal oxides and mixed metal oxides and metal sulfides in a vertical tube reactor system having a downcomer section and a riser section in order to oxidize and dissolve the metal values in aqueous slurry primarily in the downcomer section and introducing a reducing agent comprising a formate species and reducing the dissolved metal values in the riser section. The reduced metal values are then separated with the gangue values from the product solution downstream from the vertical tube reactor system. The reduced metal values may then be separated from the gangue material by conventional solid separation techniques, such as flotation.
摘要翻译： 本发明包括在具有降液管段和提升管部分的垂直管式反应器系统中处理金属氧化物和混合金属氧化物和金属硫化物，以便主要在降液管部分中氧化和溶解含水浆料中的金属值，并引入还原剂 其包含甲酸盐物质并且降低所述提升管部分中的溶解的金属值。 然后将降低的金属值与来自垂直管式反应器系统下游的产物溶液的脉石值分离。 然后通过常规的固体分离技术（例如浮选）将还原的金属值与ang石材料分离。
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公开(公告)号：US5632825A
公开(公告)日：1997-05-27
申请号：US601238
申请日：1996-02-14
CPC分类号： C23C18/31
摘要： A copper alloy plumbing fixture containing interdispersed lead particles coated noncontinuously on a water contact surface to resist the leaching of lead into potable water systems. The leach resistant fixture is prepared by immersing conventional copper alloys in a bismuth nitrate solution, selectively and noncontinuously coating the lead dispersoid particles on the water contact surface with bismuth. Tin may be substituted for bismuth to obtain similar results.
摘要翻译： 一种铜合金管道固定装置，其包含不连续涂覆在水接触表面上的分散的铅颗粒，以防止铅浸入饮用水系统中。 通过将常规铜合金浸入硝酸铋溶液中，可以选择性且不连续地用铋在水接触表面上涂覆铅分散质颗粒来制备防潮夹具。 锡可以代替铋来获得类似的结果。
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公开(公告)号：US6013382A
公开(公告)日：2000-01-11
申请号：US863672
申请日：1997-05-27
CPC分类号： C23C18/31 , Y10T428/12458 , Y10T428/12681 , Y10T428/12694 , Y10T428/12715 , Y10T428/1291
摘要： A copper alloy plumbing fixture containing interdispersed lead particles coated non-continuously on a water contact surface to resist the leaching of lead into potable water systems. The leach resistant fixture is prepared by immersing conventional copper alloys in a bismuth nitrate solution, selectively and non-continuously coating the lead dispersoid particles on the water contact surface with bismuth, tin or copper.
摘要翻译： 一种铜合金管道固定装置，其包含不连续涂覆在水接触表面上的分散的铅颗粒，以防止铅浸入饮用水系统中。 通过将常规铜合金浸入硝酸铋溶液中制备浸出防水夹具，用铋，锡或铜选择性且不连续地将铅分散质颗粒涂覆在水接触面上。
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公开(公告)号：US5544859A
公开(公告)日：1996-08-13
申请号：US253746
申请日：1994-06-03
CPC分类号： C23C18/31
摘要： A copper alloy plumbing fixture containing interdispersed lead particles coated noncontinuously on a water contact surface to resist the leaching of lead into potable water systems. The leach resistant fixture is prepared by immersing conventional copper alloys in a bismuth nitrate solution, selectively and noncontinuously coating the lead dispersoid particles on the water contact surface with bismuth. Tin may be substituted for bismuth to obtain similar results.
摘要翻译： 一种铜合金管道固定装置，其包含不连续涂覆在水接触表面上的分散的铅颗粒，以防止铅浸入饮用水系统中。 通过将常规铜合金浸入硝酸铋溶液中，可以选择性且不连续地用铋在水接触表面上涂覆铅分散质颗粒来制备防潮夹具。 锡可以代替铋来获得类似的结果。
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公开(公告)号：US06479025B2
公开(公告)日：2002-11-12
申请号：US09151694
申请日：1998-09-11
IPC分类号： C01D700
摘要： A process for the production of sodium carbonate monohydrate is disclosed. The process includes heating a feed stream containing trona and insoluble impurities in a calcining apparatus to a temperature of less than about 350° C. to form anhydrous sodium carbonate. The anhydrous sodium carbonate is contacted with a saturated sodium carbonate brine solution to form sodium carbonate monohydrate crystals. Sodium carbonate monohydrate crystals are separated from insoluble impurities.
摘要翻译： 公开了一种生产碳酸钠一水合物的方法。 该方法包括在煅烧装置中将含有天然碱和不溶性杂质的进料流加热至低于约350℃的温度以形成无水碳酸钠。 将无水碳酸钠与饱和碳酸钠盐水溶液接触以形成碳酸钠一水合物晶体。 将碳酸钠一水合物晶体与不溶性杂质分离。
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公开(公告)号：US5736113A
公开(公告)日：1998-04-07
申请号：US583879
申请日：1996-01-11
摘要： Disclosed is a method for beneficiating trona from a feedstream containing trona and impurities by a dry separation method, namely, electrostatically separating a first portion of impurities from the trona at a temperature between about 25.degree. C. and about 45.degree. C. The disclosed beneficiation of trona method may also include separation of impurities from trona by other dry separation methods, such as density separation, magnetic separation and size separation, and/or by wet separation methods.
摘要翻译： 公开了一种通过干法分离方法从含有天然碱和杂质的原料流中净化天然碱的方法，即在约25℃至约45℃之间的温度下将第一部分杂质与天然碱静电分离。所公开的选矿 天然碱法还可以包括通过其它干法分离方法如密度分离，磁分离和粒度分离，和/或通过湿式分离方法从天然碱中分离杂质。
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公开(公告)号：US5660735A
公开(公告)日：1997-08-26
申请号：US683530
申请日：1996-07-15
申请人： Enzo Coltrinari , Wayne C. Hazen
发明人： Enzo Coltrinari , Wayne C. Hazen
CPC分类号： C02F1/56 , C02F1/5236 , Y10S210/911 , Y10S210/912 , Y10S210/913 , Y10S210/914
摘要： The present invention is a method to remove metals from solutions by precipitating the metals and adding cellulosic fiber to the solution. The precipitates attach to the cellulosic fibers to form products. The products may be removed from the solution by gravity separation techniques or by filtration. The removed products may be dewatered and incinerated. The method provides a simple and effective technique for removing low concentrations of metals from high volume solution streams.
摘要翻译： 本发明是通过沉淀金属并向溶液中加入纤维素纤维从溶液中除去金属的方法。 沉淀物附着在纤维素纤维上形成产品。 产物可以通过重力分离技术或通过过滤从溶液中除去。 去除的产品可能会脱水并焚化。 该方法提供了一种从高体积溶液流中去除低浓度金属的简单有效的技术。
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公开(公告)号：US5911959A
公开(公告)日：1999-06-15
申请号：US967281
申请日：1997-11-07
摘要： Disclosed are a variety of processes for the purification of saline minerals and in particular, trona. Some of the processes include a combination wet and dry recovery process which results in high recovery and purification at relatively low cost. The dry separation methods can include density separation, magnetic separation and electrostatic separation. Other processes include a modified slush process for the purification of calcined trona (sodium carbonate) by the introduction of anhydrous sodium carbonate into a saturated brine solution and subsequent separation of insoluble impurities.
摘要翻译： 公开了用于净化盐水矿物质，特别是天然碱的各种方法。 一些方法包括湿和干回收方法的组合，其以相对低的成本导致高回收和纯化。 干法分离方法可包括密度分离，磁分离和静电分离。 其他方法包括通过将无水碳酸钠引入饱和盐水溶液中并随后分离不溶性杂质来纯化煅制天然碱（碳酸钠）的改进的糊化方法。
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公开(公告)号：US5536416A
公开(公告)日：1996-07-16
申请号：US332536
申请日：1994-10-31
申请人： Enzo Coltrinari , Wayne C. Hazen
发明人： Enzo Coltrinari , Wayne C. Hazen
CPC分类号： C02F1/56 , C02F1/5236 , Y10S210/911 , Y10S210/912 , Y10S210/913 , Y10S210/914
摘要： The present invention is a method to remove metals from solutions by precipitating the metals and adding cellulosic fiber to the solution. The precipitates attach to the cellulosic fibers to form products. The products may be removed from the solution by gravity separation techniques or by filtration. The removed products may be dewatered and incinerated. The method provides a simple and effective technique for removing low concentrations of metals from high volume solution streams.
摘要翻译： 本发明是通过沉淀金属并向溶液中加入纤维素纤维从溶液中除去金属的方法。 沉淀物附着在纤维素纤维上形成产品。 产物可以通过重力分离技术或通过过滤从溶液中除去。 去除的产品可能会脱水并焚化。 该方法提供了一种从高体积溶液流中去除低浓度金属的简单有效的技术。
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公开(公告)号：US4192676A
公开(公告)日：1980-03-11
申请号：US905091
申请日：1978-05-11
CPC分类号： C22B15/0021 , C22B15/0047 , C22B5/14
摘要： Copper is recovered from copper salts selected from the group consisting of copper chlorides, copper oxides and copper oxychlorides by reducing the finely divided solid copper salts with hydrogen under turbulent conditions at a temperature greater than the melting point of elemental copper.
摘要翻译： 通过在大于元素铜熔点的湍流条件下，用氢还原精细分散的固体铜盐，从铜氯化物，铜氧化物和氯氧化铜中选择铜。
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