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1.发明授权Process for the heat treatment of spent pot linings derived from Hall-Heroult electrolytic cells 失效来自Hall-Heroult电解池的废锅炉衬的热处理工艺
公开(公告)号：US5365012A
公开(公告)日：1994-11-15
申请号：US081198
申请日：1993-06-25
IPC分类号： A62D3/00 , A62D3/30 , A62D3/40 , A62D101/45 , A62D101/49 , B09B3/00 , C01F1/00
CPC分类号： A62D3/40 , B09B3/00 , C25C3/08 , A62D2101/45 , A62D2101/49 , Y10S588/90
摘要： A process for heat treating spent pot linings from Hall-Heroult electrolytic cells which comprise carbon and silico-aluminous materials impregnated with fluorides. The pot linings are ground to a particle size less than 5 mm, and formed into an intimate mixture with calcium sulfate or calcium sulfate dihydrate having a particle size less than 1 mm. The mixture is injected into the center of a vortex formed by a flow of circulating hot gas at the top part of a reactor at a temperature between 700.degree. and 1100.degree. C., and extracted from the bottom part of the reaction at a temperature between 400.degree. and 750.degree. C. after a contact time of less than 2 seconds.
摘要翻译： 用于热处理来自Hall-Heroult电解池的废锅衬里的方法，其包括用氟化物浸渍的碳和硅铝土材料。 将锅内衬研磨至小于5mm的粒度，并形成与粒径小于1mm的硫酸钙或二水合硫酸钙的紧密混合物。 将混合物注入由反应器顶部的循环热气流形成的涡流的中心，温度在700〜1100℃之间，并在反应的底部部分之间的温度 400°C和750°C，接触时间小于2秒。
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2.发明授权Process for the thermal shock treatment of spent pot linings obtained from Hall-Heroult electrolytic cells 失效来自HALL-HEROULT电解质电池获得的活塞衬垫的热冲击处理工艺
公开(公告)号：US5245115A
公开(公告)日：1993-09-14
申请号：US716104
申请日：1991-06-17
IPC分类号： A62D3/00 , A62D3/40 , A62D101/45 , A62D101/49 , B09B3/00
CPC分类号： A62D3/40 , B09B3/00 , C25C3/08 , A62D2101/45 , A62D2101/49 , Y10S588/90
摘要： The invention relates to a thermal shock treatment in a reactor of ground spent pot linings, constituted both by carbon-containing products and silico-aluminous products impregnated with fluorine-containing mineral compounds, mixed with a pulverulent mineral additive able to combine hot, with or without melting or fusion, with the fluorine-containing impregnating compounds in order to form new stable and insoluble compounds such as CaF.sub.2, binary, ternary or quaternary compounds of NaF, CaF.sub.2, SiO.sub.2, Al.sub.2 O.sub.3, CaSO.sub.4, Na.sub.2 SO.sub.4, of the nephelite, hauynite or similar type.
摘要翻译： 本发明涉及一种用于处理废弃废锅炉的反应器中的热冲击处理，其由含碳产物和浸渍有含氟矿物化合物的硅铝酸盐产品组成，与能够结合热的粉末矿物添加剂混合，或与 不熔融或融合，与含氟浸渍化合物形成新的稳定和不溶性的化合物，例如，上述钙钛矿，黑云母或黑云母的NaF，CaF 2，SiO 2，Al 2 O 3，CaSO 4，Na 2 SO 4的CaF 2，二元，三元或四元化合物 类似的类型
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