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    • 1. 发明申请
    • Heat treatment of metal castings and in-furnace sand reclamation
    • 金属铸件的热处理和炉内砂的回收
    • US20020109274A1
    • 2002-08-15
    • US10024540
    • 2001-12-17
    • Consolidated Engineering Company, Inc.
    • Scott P. Crafton
    • C21D001/68
    • B22D31/002B22C5/085B22D29/003C21D1/53
    • The method and apparatus for reclaiming substantially pure sand from a heat treating furnace; wherein a casting with sand core and/or sand mold, comprising sand bound by a combustible binder, attached thereto is introduced into the heat treating furnace; or, wherein portions of sand core and/or sand mold that are not attached to a casting are introduced into the heat treating furnace. Wherein, the reclaiming within the furnace is carried out, in part, by a fluidizer that promotes binder combustion by one or more process of agitating, heating, and oxygenating. Wherein, the characteristics of the reclaimed sand are selectively controlled by controlling the dwell time of the sand within the heat treating furnace.
    • 用于从热处理炉回收基本上纯的沙子的方法和装置; 其特征在于,将具有砂芯和/或砂模的铸造物,其中包含与可燃粘合剂结合的砂子,其附着在其上,被引入到所述热处理炉中; 或者,其中未连接到铸件的砂芯和/或砂模的部分被引入到热处理炉中。 其中,炉内的回收部分地通过一种通过一个或多个搅拌,加热和氧化过程促进粘合剂燃烧的流化器进行。 其中,通过控制热处理炉内的砂的停留时间来选择性地控制再生砂的特性。