Method of producing cordierite ceramic honeycomb
    2.
    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。