Powder composition based on a calcium/magnesium compound

Details Powder composition based on a calcium/magnesium compound Powder composition based on a calcium/magnesium compound

C - Chemistry, Metallurgy

01

F

C01F 11/02 (2006.01) C01F 11/00 (2006.01) C01F 11/18 (2006.01) C09C 1/02 (2006.01)

Patent

CA 2551479

The invention relates to a powder composition based on a calcium/magnesium compound having formula (I), x Ca A. (1-x) [yMgA+(1-y)MgO], in which A is a group =(OH)2 or =CO3 and x and y are mole fractions where 0 < x = 1 and 0 = y = 1, containing an amount of mineral solid flow agent that is less than 5 wt.- % of the composition, said agent being selected from the group containing vermiculite, perlite, diatomaceous earth and silica, in the form of particles having a size greater than 90 µm.

Composition pulvérulente à base d'un composé calco-magnésien répondant à la formule (I), x Ca A. (1-x) [yMgA+(1-y)MgO], dans laquelle A est un groupe =(OH)2 ou =CO3, et x et y sont des fractions molaires où 0 < x <= 1 et 0 <= y <= 1, qui contient, en une quantité inférieure à 5 % en poids de ladite composition, un agent d'écoulement solide minéral choisi parmi le groupe constitué de la vermiculite, de la perlite, de la terre de diatomée et de la silice, sous la forme de particules présentant une taille supérieure à 90 ~m.

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