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    • 5. 发明授权
    • Method for processing clay ceramic materials
    • 粘土陶瓷材料的加工方法
    • US06548438B2
    • 2003-04-15
    • US09901167
    • 2001-07-09
    • Denis A. BrosnanJames C. Frederic, Jr.John P. Sanders, III
    • Denis A. BrosnanJames C. Frederic, Jr.John P. Sanders, III
    • C04B3304
    • C04B33/08C04B33/04C04B35/6265C04B2235/726
    • A method of forming bricks, tiles, and the like by treating clay, shale or other clay ceramic raw materials containing pyrite is disclosed. Such clay, ceramic raw materials may be ground, and then mixed with an oxidizer in a pre-oxidation step to disperse the oxidizer within the clay to expose the maximum amount of clay surface to the oxidizer. One oxidizer that may be used is an aqueous solution of hydrogen peroxide. Clay is shaped into clay products and then heated to elevated temperatures. Pyrite within the clay is oxidized, thereby removing sulfur-containing compounds such as sulfur dioxide from the clay. The application of the invention may assist in preventing efflorescense by ensuring complete or nearly complete removal of pyrite from products oxidation treatment and subsequent firing at elevated temperatures. Similarly, by enhancing the oxidation of pyrite, faster firing cycles may be possible which facilitates reduced fuel consumption and faster process time.
    • 公开了一种通过处理含有黄铁矿的粘土,页岩或其它粘土陶瓷原料来形成砖,瓦等的方法。 可以将这种粘土陶瓷原料研磨,然后在预氧化步骤中与氧化剂混合,以将氧化剂分散在粘土中以将最大量的粘土表面暴露于氧化剂。 可以使用的一种氧化剂是过氧化氢的水溶液。 粘土成型为粘土产品,然后加热至高温。 粘土内的黄铁矿被氧化,从而从粘土中除去含硫化合物如二氧化硫。 本发明的应用可以通过确保从产物氧化处理和随后在高温下烧制来完全或接近完全除去黄铁矿来帮助防止风化。 类似地,通过增强黄铁矿的氧化,更快的烧制循环可能是有利的,这有助于降低燃料消耗和更快的加工时间。