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    • 81. 发明申请
    • Method for performing thermal reactions between reactants and a furnace for same
    • 用于在反应物和与其相同的炉子之间进行热反应的方法
    • US20040126299A1
    • 2004-07-01
    • US10468866
    • 2003-11-05
    • Dag OvrebnullWilliam George Clark
    • C01B035/04C01B031/34
    • F27B7/06C01B21/06C01B21/0765C01B32/914C01B32/921C01B35/04C01P2004/61C01P2004/62C01P2006/80F27B7/26F27B7/34F27D5/0068F27D2019/0012F27D2099/0008
    • The present invention relates to thermal reactions performed at rapid transient temperatures, and a furnace (1) able to perform such reactions. The method and the furnace may suitably be applied to perform reactions between reactants where significant losses normally occur at certain transient temperatures or temperature ranges. One practical application of the present invention relates to a carbothermic method for producing Refractory Hard Metal powders, such as borides, nitrides and carbides, and a furnace designed for the performance of the method. In accordance with this method Refractory Hard Metal powders, such as boride powders can be produced with reduced loss of reactants such as C and B2O3. This can be achieved by rapid heating of the mixture containing the reactants in a critical temperature range. For the performance of this particular embodiment a two-step furnace has been applied, where the temperature in each individual temperature zone (37, 38) Is respectively below and above critical temperatures of the reaction. In accordance with one embodiment of the present invention high purified boride, carbide and nitride powders with a fine grain size can be produced in a simple and cost effective manner.
    • 本发明涉及在快速瞬态温度下进行的热反应,以及能够进行这种反应的炉(1)。 该方法和炉可以适当地用于在某些瞬时温度或温度范围内通常发生显着损失的反应物之间进行反应。 本发明的一个实际应用涉及用于制备耐火硬金属粉末的碳热还原法,例如硼化物,氮化物和碳化物,以及为实现该方法而设计的炉。 根据该方法,可以减少诸如C和B 2 O 3的反应物的损失来制备诸如硼化物粉末的耐火硬金属粉末。 这可以通过在临界温度范围内快速加热含有反应物的混合物来实现。 对于该特定实施例的性能,已经应用了两步骤炉,其中每个单独温度区(37,38)中的温度分别低于和高于反应的临界温度。 根据本发明的一个实施方案,可以以简单且成本有效的方式制备具有细晶粒度的高纯度硼化物,碳化物和氮化物粉末。
    • 82. 发明授权
    • Single charge continuous rotary retort furnace with an accessible door
    • 单进料连续旋转式蒸煮炉,带门
    • US5749722A
    • 1998-05-12
    • US654254
    • 1996-05-28
    • Michael E. DriscollMichael A. DorioFrank T. Keogh
    • Michael E. DriscollMichael A. DorioFrank T. Keogh
    • C21D9/00F27B7/14F27B7/24F27B7/26F27B7/32F27B7/33F27B7/42F27D3/10
    • F27B7/32C21D9/0031F27B7/14F27B7/33F27B7/42F27D3/10F27B7/24F27B7/26
    • A single charge continuous rotary retort furnace for heat treating machine parts in a sealed atmosphere, including a rotary retort furnace housing having an inlet and outlet end with a feeder assembly at the inlet end that has a plurality of chambers for supplying the machine parts to the rotary retort furnace housing to be heat treated. In addition, the rotary retort furnace includes a locking collar assembly for connecting the feeder assembly to the inlet end of the rotary retort furnace housing having locking tabs for locking the feeder assembly to the locking collar assembly; pistons and cylinders for rotating the locking collar assembly relative to the feeder assembly; and a device for sealing the feeder assembly relative to the locking collar assembly to create an atmospheric seal in the retort furnace housing for enabling the machine parts to be heat treated. The rotary retort furnace further includes drive means for rotating as a unit the retort furnace housing, the feeder assembly and the locking collar assembly for heat treating the machine parts. The rotary retort furnace also includes an internal discharge chute assembly cooperating with the outlet end of the rotary retort furnace housing for removing therefrom the heat-treated machine parts, and an outer discharge chute assembly cooperating with the internal discharge chute assembly for receiving the heat-treated machine parts from the internal discharge chute assembly and for transferring the machine parts to a quench medium in a quench tank.
    • 一种用于在密封的气氛中热处理机器部件的单次充电连续旋转式蒸煮炉,包括具有入口端和入口端的旋转式蒸煮炉壳体,所述旋转式蒸煮炉壳体具有用于将机器部件供给到所述机器部件的多个室 旋转式蒸煮炉外壳进行热处理。 另外,旋转式蒸煮炉包括用于将进料器组件连接到旋转式蒸煮炉壳体的入口端的锁定环组件,其具有用于将进给器组件锁定到锁定套环组件的锁定突出部; 活塞和气缸,用于相对于给料器组件旋转锁定套环组件; 以及用于相对于锁定套环组件密封进给器组件以在蒸煮炉壳体中产生大气密封以使机器部件能够被热处理的装置。 旋转式蒸煮炉还包括用于将蒸煮炉壳体,进料器组件和用于热处理机器部件的锁定环组件作为单元旋转的驱动装置。 旋转式蒸煮炉还包括与旋转式蒸煮炉壳体的出口端配合的内部排放槽组件,用于从其中除去经热处理的机器部件,以及与内部排放槽组件配合的外部排出槽组件, 来自内部卸料斜槽组件的处理过的机器部件,并将机器部件转移到淬火罐中的骤冷介质。