专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5198200A Process for the recovery of values from secondary aluminum dross 失效
标题翻译：从二次铝渣回收价值的过程
公开(公告)号：US5198200A
公开(公告)日：1993-03-30
申请号：US756359
申请日：1991-09-09
申请人： Daniel Yerushalmi , Gerald E. Carkin, Jr. , Donald L. Stewart, Jr. , Jan H. L. Van Linden
发明人： Daniel Yerushalmi , Gerald E. Carkin, Jr. , Donald L. Stewart, Jr. , Jan H. L. Van Linden
IPC分类号： C01D3/08 , C22B21/00
CPC分类号： C01D3/08 , C22B21/0023 , Y02P10/234
摘要： A process for the recovery of metallic aluminum, mixtures of salts, and an aluminum oxide-metallic aluminum product from secondary aluminum dross. The process includes treating the dross with leach water to dissolve the salt content. Magnesium chloride is preferably added to the leach water to maintain the pH in the range of about 7-8.5, thereby reducing ammonia production in the treating step and enhancing recovery of metallic aluminum.
摘要翻译：用于从二次铝渣回收金属铝，盐的混合物和氧化铝 - 金属铝产品的方法。该方法包括用浸出水处理浮渣以溶解盐含量。优选将氯化镁加入到浸出水中以将pH保持在约7-8.5的范围内，从而减少处理步骤中的氨生成并提高金属铝的回收率。

2. 发明授权

US4761207A Continuous salt-based melting process 失效
标题翻译：连续盐基熔化工艺
公开(公告)号：US4761207A
公开(公告)日：1988-08-02
申请号：US40132
申请日：1987-04-20
申请人： Donald L. Stewart, Jr. , Jan H. L. VanLinden
发明人： Donald L. Stewart, Jr. , Jan H. L. VanLinden
IPC分类号： C22B9/10 , C22B21/00 , C25C3/04 , C25C3/06
CPC分类号： C22B21/0069 , C22B21/0092 , C22B9/106 , C25C3/04 , C25C3/06 , Y02P10/218
摘要： A continuous salt-based process is provided for melting and reclaiming aluminum from aluminum scrap containing impurities including heating a molten salt in a heat bay, mixing the heated salt with aluminum scrap or skim in a charge bay to form a molten charge mixture, separating aluminum from impurities in the charge bay by coalescing aluminum to form a molten aluminum metal pad, chlorinating a portion of the charge mixture from the charge bay to form a chlorinated salt mixture and metal chlorides, removing metal chlorides from the salt mixture, and feeding the salt mixture back to the heat bay. In one aspect, the chlorinating step of the present invention includes introducing carbon monoxide or, preferably, solid carbon to control oxide concentration. The process further comprises adding fluorides and removing metal chlorides from the salt to maintain a preferred salt composition. The metal chlorides can be removed by withdrawing volatile metal chloride gases and electrolytically reducing metal chlorides in the molten salt.
摘要翻译：提供了一种连续的盐基方法，用于从含有杂质的铝废料中熔化和回收铝，包括在加热室中加热熔融盐，将加热的盐与铝废料或脱脂混合在电荷室中以形成熔融混合物，分离铝从电荷室中的杂质通过聚集铝形成熔融铝金属垫，从电荷室氯化一部分电荷混合物以形成氯化盐混合物和金属氯化物，从盐混合物中除去金属氯化物，并将盐混合回到海湾。一方面，本发明的氯化步骤包括引入一氧化碳或优选固体碳以控制氧化物浓度。该方法还包括加入氟化物并从盐中除去金属氯化物以保持优选的盐组成。可以通过抽出挥发性金属氯化物气体和电解还原金属氯化物来除去金属氯化物。

3. 发明授权

US4758316A Aluminum-lithium scrap recovery 失效
标题翻译：铝锂废料回收
公开(公告)号：US4758316A
公开(公告)日：1988-07-19
申请号：US40133
申请日：1987-04-20
申请人： Donald L. Stewart, Jr. , Jan H. L. VanLinden
发明人： Donald L. Stewart, Jr. , Jan H. L. VanLinden
IPC分类号： C22B21/00 , C22B26/12 , C25C3/02 , C25C3/06
CPC分类号： C22B21/0092 , C22B21/0046 , C22B21/0069 , C22B26/12 , C25C3/02 , Y02P10/214 , Y02P10/218 , Y02P10/226
摘要： A process is provided for melting and reclaiming aluminum and lithium from aluminum-lithium scrap including heating a molten salt in a heat bay, mixing the heated salt with aluminum-lithium scrap in a charge bay to form a molten mixture, separating aluminum from impurities in the charge bay by coalescing aluminum to form a molten aluminum metal pad, chlorinating a portion of the charge mixture from the charge bay to form a chlorinated salt mixture and metal chlorides, removing metal chlorides from the salt mixture, removing lithium from the salt mixture, and feeding the salt mixture back to the heat bay. In one aspect, the chlorinating step of the present invention includes introducing carbon monoxide or, preferably, solid carbon to control oxide concentration. The process, in other aspects, further includes adding fluorides and recovering lithium and removing metal chlorides from the salt to maintain a preferred salt composition. The lithium and the metal chlorides can be removed by withdrawing volatile metal chloride gases and electrolytically reducing metal chlorides in the molten salt.
摘要翻译：提供了一种用于从铝 - 锂废料熔融和回收铝和锂的方法，包括在加热室中加热熔融盐，将加热的盐与电荷室中的铝 - 锂废料混合以形成熔融混合物，将铝与杂质分离电荷室通过聚集铝形成熔融铝金属垫，从电荷室氯化一部分电荷混合物以形成氯化盐混合物和金属氯化物，从盐混合物中除去金属氯化物，从盐混合物中除去锂，并将盐混合物送回加热室。一方面，本发明的氯化步骤包括引入一氧化碳或优选固体碳以控制氧化物浓度。在其他方面，该方法还包括加入氟化物并回收锂并从盐中除去金属氯化物以保持优选的盐组成。可以通过抽出挥发性金属氯化物气体和电解还原金属氯化物来除去锂和金属氯化物。

4. 发明授权

US5227143A Process for the removal of salts from aluminum dross 失效
标题翻译：从铝屑中去除沉淀物的方法
公开(公告)号：US5227143A
公开(公告)日：1993-07-13
申请号：US766035
申请日：1991-09-26
申请人： Donald L. Stewart, Jr. , Jan H. L. vanLinden
发明人： Donald L. Stewart, Jr. , Jan H. L. vanLinden
IPC分类号： C22B3/04 , C22B21/00
CPC分类号： C22B21/0007
摘要： A process is disclosed for treating salt-containing aluminum dross to remove potassium and sodium chloride salts therefrom. The process generally comprises treating the dross in a first treating step with a leaching solution having a pH maintained in the range of about 6-7 to remove a portion of the salt content thereof; filtering the residual solids from the first leaching solution; and treating the filtered solids in a second treating step with a second leaching solution having a pH maintained above about 8, and preferably above about 9. The pH of the first leaching solution is maintained in the desired range by the addition of hydrochloric acid, and the pH of the second leaching solution is maintained in the desired range by the addition of potassium and/or sodium hydroxide.
摘要翻译：公开了一种处理含盐铝渣从其中除去氯化钾和氯化钠盐的方法。该方法通常包括在第一处理步骤中用pH维持在约6-7范围内的浸出溶液处理浮渣以除去其一部分盐含量; 从第一浸出溶液中过滤残留固体; 并且在第二处理步骤中用第二浸出溶液处理过滤后的固体，其pH值保持在约8以上，优选高于约9.通过加入盐酸将第一浸出溶液的pH保持在所需范围内，通过加入钾和/或氢氧化钠将第二浸出溶液的pH保持在所需的范围内。

5. 发明授权

US4385964A Method for preventing the undesirable condensation of aluminum chloride in a fractional distillation column 失效
$Method for preventing the undesirable condensation of aluminum chloride in a fractional distillation column$
标题翻译：防止分馏塔中氯化铝不合要求的冷凝的方法
公开(公告)号：US4385964A
公开(公告)日：1983-05-31
申请号：US382312
申请日：1982-05-26
申请人： Roger C. Johnson , Donald L. Stewart, Jr. , Utah Tsao , David A. Wohleber
发明人： Roger C. Johnson , Donald L. Stewart, Jr. , Utah Tsao , David A. Wohleber
IPC分类号： B01D3/14 , C01B33/107 , C01F7/62 , C01G1/06 , C01G23/02 , C01G49/10
CPC分类号： C01G1/06 , B01D3/146 , C01B33/10721 , C01F7/62 , C01G23/024 , C01G49/10
摘要： A method is disclosed for preventing the condensation of aluminum chloride (AlCl.sub.3) in a fractional distillation column which is operated to separate a fraction which does not include AlCl.sub.3 from a mixture containing AlCl.sub.3 and other metal chlorides and which is operated at temperatures which include the sublimation or melting points of AlCl.sub.3 at the operating pressure of the column. According to this method, titanium tetrachloride (TiCl.sub.4) is maintained in the column in an amount at least as great, by weight, as the amount of AlCl.sub.3 contained in the mixture.
摘要翻译：公开了一种防止氯化铝（AlCl 3）在分馏塔中冷凝的方法，该分馏塔用于将不含AlCl 3的馏分从含有AlCl 3和其它金属氯化物的混合物中分离，并在包括升华或在柱的操作压力下的AlCl 3的熔点。根据该方法，将四氯化钛（TiCl 4）以至少与混合物中所含的AlCl 3的量重量相同的量保持在塔中。

6. 发明授权

US4349420A Fractional distillation process for the production of aluminum chloride 失效
标题翻译：分馏法生产氯化铝
公开(公告)号：US4349420A
公开(公告)日：1982-09-14
申请号：US224280
申请日：1981-01-12
申请人： Donald L. Stewart, Jr.
发明人： Donald L. Stewart, Jr.
IPC分类号： B01D3/14 , C01B33/107 , C01F7/62 , C01G1/06
CPC分类号： C01B33/10721 , B01D3/143 , C01F7/62 , C01G1/06
摘要： Metal chlorides such as aluminum chloride (AlCl.sub.3) are separated from a mixture containing metal chlorides including AlCl.sub.3 and ferric chloride (FeCl.sub.3). In order to effect this separation, the mixture is subjected to a fractional distillation process utilizing an array of distillation columns. According to this process, the mixture is introduced into a first distillation column which is operated at temperatures and pressures sufficient to separate FeCl.sub.3 from the mixture while avoiding the formation of a solid solution of FeCl.sub.3 and AlCl.sub.3 within the column. At least one additional distillation column is then employed to separate metal chlorides from the remaining mixture from the first column.
摘要翻译：从包含AlCl 3和氯化铁（FeCl 3）的金属氯化物的混合物中分离出氯化铝（AlCl 3）等金属氯化物。为了实现这种分离，使用一系列蒸馏塔对混合物进行分馏工艺。根据该方法，将混合物引入第一蒸馏塔，其在足以从混合物中分离出FeCl 3的温度和压力下运行，同时避免在该塔内形成FeCl 3和AlCl 3的固溶体。然后使用至少一个另外的蒸馏塔从与第一塔的剩余混合物中分离金属氯化物。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式