Solidification Of Slurry Research Articles

J0320503 水系スラリーの一方向凝固を利用したバイモーダル多孔質セラミックスの作製([J032-05]ポリマー・セラミックス・メタル多孔質材料の開発と応用(5),材料力学部門)

J0320503 水系スラリーの一方向凝固を利用したバイモーダル多孔質セラミックスの作製([J032-05]ポリマー・セラミックス・メタル多孔質材料の開発と応用(5),材料力学部門)

高温集塵用耐食性コージエライト質フィルターの作製

Porous ceramics with a high heat and corrosion resistance and high gas permeability have been fabricated for high temperature dust collection. Cordierite, which has a high thermal shock resistance due to a low expansion coefficient, was used as a filter matrix. The porous filter was produced by in situ solidification of slurry containing bubbles. Zircon was coated on the porous cordierite by using the solgel process to improve the corrosion resistance at high temperatures. The coating was carried out by dipcoating technique. Various structures of coating layer were obtained by controlling coating conditions, such as the coating rate, the solution viscosity, and the coating times. The formation of particle layer on the outer surface of filter was of the best structure for high temperature dust collection filter because it enhanced temperature corrosion resistance without reducing gas permeability.

The Development of a ‘Large liner’ For the Processing and Solidification Of Intermediate Level Wastes

Magnox Electric have developed a ‘Large Liner’ for the processing and solidification of the majority of the slurry form intermediate level wastes which arise on its power station sites (operational or undergoing decommissioning). The Liner comprises a cylindrical vessel of approximate dimensions 1.7 m diameter by 1.2 m high and it has been developed to comply with the requirements of the current Nirex Package Specifications. It is manufactured from stainless steel, being of all welded construction, with a bolted lid, incorporating an ‘O’ ring elastomer seal. The Liner can be fitted with a paddle for the ‘in drum’ solidification of slurry from wastes. This paper describes the development of the Liner, outlining the main stages from initial concepts to the final testing and receipt of approval from Nirex, who have adopted the Liner as one of its ‘Standard’ waste containers.