The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2019
Filed:
Sep. 15, 2014
S.a. Lhoist Recherche ET Developpement, Ottignies-Louvain-la-neuve, BE;
Marion Lorgouilloux, Strepy-Bracquegnies, BE;
Marc Pelletier, Saint-Mande, FR;
Robert Sebastian Gartner, Buizingen, BE;
Thierry Chopin, Uccle, BE;
S.A. Lhoist Recherche et Developpement, Ottignies-Louvain-la, BE;
Abstract
Process for preparing a mineral composition based on a mixed solid phase of calcium and magnesium carbonates, comprising a preparation, in an aqueous phase, of a suspension of a solid phase containing at least one calcium compound selected from calcium hydroxide, calcium carbonate and mixtures thereof and at least one magnesium compound selected from magnesium oxide, magnesium hydroxide, at least partially hydrated dolomite, and mixtures thereof, the weight of said solid phase being between 5% and 15% of the total weight of the suspension, a carbonation of said solid phase in suspension by injecting a gas containing COinto said suspension that is heated at a temperature of 55° C. to 90° C., at a flow rate of COof 2.5 to 15 dm/min/kg of said solid phase of the suspension, with a reduction of the pH of the suspension to a value of less than 9 and with a stabilization of the electrical conductivity of the suspension, the carbonation being stopped as soon as this stabilization of electrical conductivity is observed.