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    • 2. 发明授权
    • Method of regenerating a spent pickling solution
    • 再生废酸洗方法
    • US06375915B1
    • 2002-04-23
    • US08968136
    • 1997-11-12
    • Frank BärholdWerner Engelhardt
    • Frank BärholdWerner Engelhardt
    • C23G136
    • C23G1/36Y10S423/01
    • In a method of regenerating a spent pickling solution composed of nitric acid and hydrofluoric acid and containing metal fluorides and metal nitrates, the pickling solution is heated in a reactor to about 300-1,000° C., the metal fluorides and the metal nitrates are pyrohydrolized, and the metal oxides formed as a result are removed as a granulate, and the gas produced in the fluodized bed reactor is dedusted, cooled and fed to an acid recovery unit. The spent pickling solution is initially separated in a separating process into a partial flow with free acid and into a partial flow enriched with metal salts, and the partial flow enriched with free acid is fed to the acid recovery unit and the partial flow enriched with metal salts is fed to the fluidized bed reactor.
    • 在由硝酸和氢氟酸组成并含有金属氟化物和金属硝酸盐的废酸浸液再生方法中,酸洗液在反应器中加热到约300-1000℃,金属氟化物和金属硝酸盐被热解 ,并且作为颗粒形成的金属氧化物被除去,并且将在氟化床反应器中产生的气体除尘,冷却并进料至酸回收单元。 初始的酸洗溶液在分离过程中被分离成具有游离酸的部分流和富含金属盐的部分流,并且富含游离酸的部分流被供给到酸回收单元,富含金属的部分流 盐被送入流化床反应器。
    • 5. 发明授权
    • Removing toner from printed material
    • 从打印材料中清除墨粉
    • US06569256B1
    • 2003-05-27
    • US09666217
    • 2000-09-21
    • David H. Koizumi
    • David H. Koizumi
    • C23G136
    • G03G21/00Y10T428/14
    • Toner xerographically adhered to a material, such as a sheet of paper, may be removed using a solvent-based or solventless approach. The application of ultrasonic tamping, scraping and brushing may aid in removing toner particles. In a solvent-based approach, a solvent may be applied generally or the solvent may be targeted specifically to the toner covered portions of the material to loosen the adhesive securement of the toner to the material. Thereafter, the toner is subjected to a mechanical abrasion using ultrasonic and physical agitation to cause flaking of the toner.
    • 可以使用溶剂型或无溶剂方法去除杂色粘合到诸如一张纸的材料上的调色剂。 超声波捣实,刮擦和刷涂的应用可能有助于去除调色剂颗粒。 在基于溶剂的方法中,可以一般地施加溶剂或将溶剂特异性地靶向该材料的调色剂覆盖部分,以松开调色剂对该材料的粘合剂固定。 此后,使用超声波和物理搅拌对调色剂进行机械磨损,使调色剂剥落。