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1.发明授权
公开(公告)号：US5245116A
公开(公告)日：1993-09-14
申请号：US793114
申请日：1991-11-18
IPC分类号： A62D3/00 , A62D3/33 , A62D3/35 , A62D101/40 , A62D101/45 , A62D101/49 , C25C3/08
CPC分类号： A62D3/35 , A62D3/33 , C25C3/08 , A62D2101/40 , A62D2101/45 , A62D2101/49 , A62D2203/02
摘要： A process for the treatment of spent pot linings impregnated with alkali metal cyanide and fluoric products by grinding previously crushed pot linings in the presence of lime, suspending the ground pot linings in an aqueous medium in order to precipitate a flux in the form of CaF.sub.2 accompanied by the release of soda, followed by the heating of the suspension at a temperature T>140.degree. C. in the presence of clay to form, after fixing the free soda, insoluble synthetic silicate compounds of the feldspathoid or zeolite type and finally the separation by filtration of the resulting solid phase from the liquid phase, which liquid phase is recycled to form a new ground pot lining suspension.
摘要翻译： 通过在石灰存在下研磨先前压碎的罐衬里来处理浸渍有碱金属氰化物和氟产物的废罐衬里的方法，将研磨的锅内衬悬浮在水性介质中，以沉淀CaF2形式的助熔剂 通过苏打的释放，然后在粘土存在下，在温度T> 140℃下加热悬浮液，形成固定游离苏打水，熔融石榴石或沸石型不溶性合成硅酸盐化合物，最后分离 通过从液相中过滤所得固相，将该液相再循环以形成新的研磨罐衬里悬浮液。
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2.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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3.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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