Process for producing hydrated and cured product of...

Details Process for producing hydrated and cured product of... Process for producing hydrated and cured product of...

B - Operations, Transporting

28

B

25/105

B28B 3/20 (2006.01) B01D 53/50 (2006.01) B01J 20/04 (2006.01) C04B 2/02 (2006.01)

Patent

CA 2001350

A process for producing a hydrated and cured product of a lime-gypsum-coal ash mixture capable of constituting a high-performance desulfurizing agent, with a high yield and in a simplified manner is provided, which process comprises adding water to a mixture of lime, used desulfurizing agent and coal ash, followed by kneading the resulting mixture, then extruding the resulting kneaded material through a hole of 2 to 10mm in diameter to obtain bullet-like materials, hydrating and curing said bullet-like materials, followed by drying.

L'invention concerne une méthode pour produire un produit hydraté et réticulé à base d'un mélange de chaux-gypse-cendre de houille - pouvant servir comme agent de désulfuration à haut rendement -, avec un rendement élevé et de façon simple; la méthode consiste à ajouter de l'eau à un mélange de chaux, d'agent de désulfuration usé et de cendre de houille, puis à malaxer le mélange résultant, à extruder le mélange malaxé obtenu, à travers un trou de 2 à 10 mm de diamètre, de façon à produire un matériau en forme de balles, à hydrater et à réticuler le matériau en forme de balles, enfin à le sécher.

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