Method of producing cordierite ceramic honeycomb
    3.
    发明授权
    Method of producing cordierite ceramic honeycomb 有权
    生产堇青石陶瓷蜂窝的方法

    公开(公告)号:US06783724B2

    公开(公告)日:2004-08-31

    申请号:US09980940

    申请日:2002-03-04

    IPC分类号: B28B320

    摘要: A method of producing a cordierite ceramic honeycomb including the steps of: preparing raw materials becoming cordierite and forming agents; adding the forming agents into the raw materials for cordierite generation; mixing the forming agents and the raw materials to obtain a raw material batch; extruding the raw material batch to obtain a formed body; drying the formed body; and sintering the formed body after drying; so as to obtain a honeycomb structural body having a cordierite crystal phase as a main ingredient. In this method, at the sintering step, a temperature descending rate at least from a maximum temperature to 1300° C. is not larger than 100° C./hour.

    摘要翻译: 一种生产堇青石陶瓷蜂窝体的方法,包括以下步骤:将原料制成堇青石和成型剂; 将成型剂加入堇青石生成原料中; 混合成型剂和原料以获得原料批料; 挤出原料批料以获得成形体; 干燥成型体; 干燥后烧成成形体; 以获得具有堇青石晶相作为主要成分的蜂窝结构体。 在该方法中,在烧结工序中,至少从最高温度至1300℃的温度下降率不大于100℃/小时。

    Ceramic honeycomb catalyst carrier and method of producing the same
    5.
    发明授权
    Ceramic honeycomb catalyst carrier and method of producing the same 有权
    陶瓷蜂窝状催化剂载体及其制造方法

    公开(公告)号:US06649244B2

    公开(公告)日:2003-11-18

    申请号:US09959211

    申请日:2002-01-17

    IPC分类号: B32B312

    摘要: A ceramic honeycomb catalyst carrier wherein a porosity is 20% or less and an average surface roughness (Ra) of a partition wall of the carrier is 0.5 &mgr;m or more is obtained by forming ceramic raw materials to obtain a ceramic honeycomb formed body; drying the ceramic honeycomb formed body to obtain a ceramic honeycomb dried-up body; roughening a surface of the partition wall of the ceramic honeycomb dried-up body by exposing the ceramic honeycomb dried-up body in an airflow in which polishing powders are included; and sintering the ceramic honeycomb dried-up body after a surface treatment, or, by forming ceramic raw materials to obtain a ceramic honeycomb formed body; drying and sintering the ceramic honeycomb formed body to obtain a ceramic honeycomb sintered body; and roughening a surface of the partition wall of the ceramic honeycomb sintered body by exposing the ceramic honeycomb sintered body in an airflow or a water flow in which polishing powders are included.

    摘要翻译: 通过形成陶瓷原料得到陶瓷蜂窝成形体,得到孔隙率为20%以下,载体隔壁的平均表面粗糙度(Ra)为0.5μm以上的陶瓷蜂窝状催化剂载体, 干燥陶瓷蜂窝成型体,得到陶瓷蜂窝干燥机; 通过在包含抛光粉末的气流中使陶瓷蜂窝干燥机体露出,使陶瓷蜂窝干燥机的分隔壁的表面粗糙化; 在表面处理后烧结陶瓷蜂窝状干燥体,或者通过形成陶瓷原料,得到陶瓷蜂窝成形体; 干燥并烧结陶瓷蜂窝成形体,得到陶瓷蜂窝烧结体; 通过将陶瓷蜂窝烧结体暴露在包含研磨粉末的气流或水流中,使陶瓷蜂窝状烧结体的隔壁的表面粗糙化。

    Process for production of cordierite-based ceramic honeycomb structure
    6.
    发明授权
    Process for production of cordierite-based ceramic honeycomb structure 有权
    堇青石陶瓷蜂窝结构生产工艺

    公开(公告)号:US06291379B1

    公开(公告)日:2001-09-18

    申请号:US09493206

    申请日:2000-01-28

    IPC分类号: C04B35195

    CPC分类号: B01J21/14

    摘要: A process for producing a cordierite-based ceramic honeycomb structure, includes kneading raw materials for cordierite with a forming aid to obtain a raw material batch, subjecting the raw material batch to obtain a honeycomb structure, and subjecting the honeycomb structure to drying and firing in this order to obtain a ceramic honeycomb structure whose crystal phase is composed mainly of cordierite. The raw material batch contains 65% by weight or more of raw materials for cordierite, comprising talc, kaolin and aluminum hydroxide and having crystal water. The kaolin has an average particle diameter of 5 &mgr;or more and a BET specific surface area of 10 m2/g or less and is contained in the raw material batch in an amount of 10% or more by weight. Formability during extruding, particularly lubricity and shape stability, are improved, for producing cordierite-based ceramic honeycomb structure having thin partition walls and high cell density, and improved mechanical strength (isostatic fracture strength) and improved catalyst coatability.

    摘要翻译: 一种堇青石系陶瓷蜂窝结构体的制造方法,其特征在于,将堇青石的原料与成形助剂混炼,得到原料批料,对原料批料进行处理,得到蜂窝结构体,使蜂窝结构物进行干燥烧成 这是为了得到其结晶相主要由堇青石组成的陶瓷蜂窝结构体。 原料批料含有65重量%以上的堇青石原料,包括滑石,高岭土和氢氧化铝,并具有结晶水。 所述高岭土的平均粒径为5μm以上,BET比表面积为10m 2 / g以下,原料成分含有10重量%以上。 改善挤出时的成形性,特别是润滑性和形状稳定性,用于生产具有薄隔壁和高泡孔密度以及改进的机械强度(等静压断裂强度)和改进的催化剂涂覆性的堇青石基陶瓷蜂窝结构体。

    Method for manufacturing porous ceramic structure
    9.
    发明授权
    Method for manufacturing porous ceramic structure 有权
    多孔陶瓷结构的制造方法

    公开(公告)号:US07468156B2

    公开(公告)日:2008-12-23

    申请号:US11496236

    申请日:2006-07-31

    IPC分类号: B28B1/00

    摘要: There is provided a method for manufacturing a porous ceramic structure, including: firing a formed body containing ceramic particles and a combustible powder functioning as a pore former, and burning off the combustible powder to obtain the porous ceramic structure. The combustible powder has an exothermic rate of 0 to 35 μV·min./mg, which is obtained from a differential thermal analysis. The method for manufacturing a porous ceramic structure can inhibit a crack from being generated during firing even without slowing down the temperature rise rate at the combustion range of the pore former or without lowering an oxygen content in the firing atmosphere.

    摘要翻译: 提供一种多孔陶瓷结构体的制造方法,其特征在于,包括:烧成含陶瓷粒子的成形体和作为成孔剂的可燃粉末,烧掉所述可燃性粉末,得到所述多孔质陶瓷结构体。 可燃粉末的放热速率为0〜35μV·min·min,由差热分析得到。 制造多孔陶瓷结构体的方法可以抑制在焙烧期间产生裂纹,即使不降低成孔剂的燃烧范围内的升温速率或不降低烧制气氛中的氧含量。