C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 9/02 (2006.01) C01G 9/00 (2006.01) C09C 1/04 (2006.01)
Patent
CA 2497320
The invention relates to a method for atomizing an aqueous suspension of zinc oxygen compounds using a nozzle (6) in a flow of hot air enabling a powder to be obtained, the Flodex index thereof being less than 15 and the compressibility index thereof being less than 20 %. The powder is formed from micro-sperical particles whose diameter is approximately 50 - 200 ?m, preferably 70 - 90 ?m, made of smaller unit particles which are perfectly dispersable in elastomers or paints, for example. Said products can be used advantageously in the vulcanization of rubber.
L'invention concerne un procédé d'atomisation d'une suspension aqueuse de composés oxygénés du zinc au moyen d'une buse (6) dans un courant d'air chaud permettant d'obtenir une poudre présentant un indice Flodex inférieur à 15 et un indice de compressibilité inférieur à 20 %. La poudre est formée de micro- sphérules présentant un diamètre D50 allant de 50 à 200 ~m environ, de préférence de 70 à 90 ~m, constituées de particules unitaires plus petites se dispersant parfaitement dans les élastomères ou les peintures par exemple. Ces produits trouvent une application intéressante lors de la vulcanisation du caoutchouc.
Guidi Tomizio
Polart Jules
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Societe Industrielle Liegeoise Des Oxydes Sa
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