首页> 外国专利> Recovering metals for composite materials - by heating with alkylbenzene(s), THF and/or dioxan, and water contg. alcohol or ketone to remove non-polar, polar and cellulosic materials

Recovering metals for composite materials - by heating with alkylbenzene(s), THF and/or dioxan, and water contg. alcohol or ketone to remove non-polar, polar and cellulosic materials

机译：回收用于复合材料的金属-通过与烷基苯，THF和/或二恶烷以及水混合加热。酒精或酮去除非极性，极性和纤维素物质

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Recovering metals (I) from composite materials (II) comprises separating the coatings on the metal with solvents; non-polar layers are removed by heating for 5-120 mins. with di- and/or tri- and/or tetra-methylbenzenes and/or ethylbenzene and/or isopropylbenzene (III) at 138.4-204 deg. C under normal or elevated pressure, polar layers are removed by heating for 5-120 mins. with THF and/or dioxan at 60-200 deg. C under normal or elevated pressure, paper and/or other cellulose-contg. materials are removed by heating for 5-120 mins. at 80-200 deg. C under autogenous pressure with water contg. 0.5-25 wt.% 1-3C alcohol and/or 3-4C ketone, and the metal is then sepd. More specifically the process is carried out in a stirred vessel, using a technical mixt. (III) of xylene isomers, pref. contg. 1-4 wt.% non-aromatics, 19-23 wt.% EtPh, 16-20 wt.% p-xylene, 40-45 wt.% m-xylene and 10-15 wt.% o-xylene; (II) is crushed to 1-50 mm particle size and treated with 1-15 pts. wt. (III) (per 1 pt. wt. II) for 5-60 (pref. 5-30) mins., and the sepd. (I) is then post-treated with the above hydrocarbon(s) for 1-120 mins. t 10-200 deg. C under normal or elevated pressure; pref. solvent(s) are such that the process can be operated at normal pressure. USE/ADVANTAGE - The process is useful esp. for recovering Al from Al laminates contg. thermoplastics, resins, paper etc. (e.g. packaging materials for tea, coffee, toothpaste etc.). The process enables the quantitative recovery of (I) in a sufficiently pure form to be re-used without further treatment. (5pp Dwg.No.0/0)

机译：从复合材料（II）中回收金属（I）包括用溶剂分离金属上的涂层;通过加热5-120分钟除去非极性层。与二和/或三和/或四甲基苯和/或乙苯和/或异丙基苯（III）在138.4-204度下反应。在常压或高压下，加热5至120分钟，可除去极性层。与THF和/或二恶烷在60-200℃下反应。 C在常压或高压下，纸和/或其他含纤维素的物质。通过加热5-120分钟除去材料。在80-200度C在自来水压力下进行。 0.5-25重量％的1-3C醇和/或3-4C酮，然后分离金属。更具体地，该方法在搅拌容器中使用工业混合物进行。（III）二甲苯异构体，优选。续1-4重量％的非芳族化合物，19-23重量％的EtPh，16-20重量％的对二甲苯，40-45重量％的间二甲苯和10-15重量％的邻二甲苯; （II）压碎至1-50 mm粒度，并用1-15 pts处理。重量（III）（每1磅重量II）5-60分钟（优选5-30分钟），然后隔然后将（I）用上述一种或多种烃后处理1-120分钟。 t 10-200度C在常压或高压下;偏好溶剂应使该方法可在常压下进行。使用/优势-该过程尤其有用。从续铝板中回收铝的方法。热塑性塑料，树脂，纸张等（例如茶，咖啡，牙膏等的包装材料）。该方法使得能够以足够纯的形式定量回收（I），而无需进一步处理即可重复使用。（5pp Dwg.No.0 / 0）

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公开/公告号DE4028999A1

专利类型
公开/公告日1992-03-19

原文格式PDF
申请/专利权人 RWE ENTSORGUNG AG 4300 ESSEN DE;
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申请/专利号DE19904028999
发明设计人 MERTENS-GOTTSELIG DAGMAR DR. 5020 FRECHEN DE;RAUSER GERD DR. 5047 WESSELING DE;LOEFFLER WERNER DR. 5300 BONN DE;
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申请日1990-09-13
分类号C22B3/16;B29B17/00;C22B7/00;C22B61/00;C08J11/08;B09B3/00;B32B35/00;
国家 DE
入库时间 2022-08-22 05:25:53

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