초록 ▼

Agglomerates based on active charcoal and on binder exhibit a good resistance to disintegration in a liquid medium as well as an excellent resistance to crushing and an excellent thermostability up to 350.degree. C. They are prepared by mixing active charcoal powder with a pore-protecting agent in g

Agglomerates based on active charcoal and on binder exhibit a good resistance to disintegration in a liquid medium as well as an excellent resistance to crushing and an excellent thermostability up to 350.degree. C. They are prepared by mixing active charcoal powder with a pore-protecting agent in gel form and then mixing with a binder, followed by the agglomeration, shaping and curing of the agglomerates obtained. They can be used as adsorption agents for the treatment, for the seperation or the purification of gases, and for the decoloration, purification and deodorization of liquids.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for the preperation of active charcoal agglomerates comprising:(a) mixing an active pore-containing charcoal powder with a binder and optionally a crosslinking agent;(b) agglomerates and shaping the mixture to form agglomerates products; and(c) curing the aggl

[ What is claimed is:] [1.]1. A process for the preperation of active charcoal agglomerates comprising:(a) mixing an active pore-containing charcoal powder with a binder and optionally a crosslinking agent;(b) agglomerates and shaping the mixture to form agglomerates products; and(c) curing the agglomerated products; racterized in that, prior to (a), the active charcoal powder is brought into contact with a pore-protecting agent chosen among aqueous or organic gels in a sufficient amount for the mixture to remain in a pulverized form and to yield an improved crushing strength of the product of step (c) as compared to the use of water as a pore-producing agent.