Omya International Ag

Michael Skovby

Martine Poffet

Pascal Gonnon

Patrick A C Gane

Matthias Buri

Daniel Edward Gerard

Joachim Schoelkopf

René Vinzenz Blum

Michael Pohl

Patrick Schwarzentruber

Hans-Georg Hartan

Nicola Di Maiuta

Tanja Budde

Domenico Zocco

Herbert Riepl

Steven Edward Durand

Patrick A Gane

Patrick Arthur Gane

Patrick AC Gane

Patrick Arthur Charles Gane

Hans- Georg Hartan

The present invention relates to a method for regulating the pH of a soil as well as the use of at least one earth alkali carbonate-containing material having a weight median particle size dvalue of &#x2264;50.0 &#x3bc;m for optimizing or improving the pH of a soil as well as the use of an irrigation or spraying system for the application of an aqueous suspension comprising at least one earth alkali carbonate-containing material in order to optimize or improve the pH of a soil.

Micronized earth alkali carbonate-containing material, for regulating the pH of a soil

The present invention relates to an abrasive cleaning composition comprising at least 6 wt.-%, based on the total weight of the composition, of a surface-reacted calcium carbonate as an abrasive material, wherein the surface-reacted calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and at least one acid.

Abrasive cleaning composition

The invention relates to a multiple batch system for the preparation of a solution of calcium hydrogen carbonate and the use of such a dual batch system for the preparation of a solution of calcium hydrogen carbonate.

Multiple batch system for the preparation of a solution of calcium hydrogen carbonate suitable for the remineralization of desalinated water and of naturally soft water

The invention relates to a process for the purification of water and/or dewatering of sludges and/or sediments, to the use of a combination of a phyllosilicate and a surface-treated calcium carbonate for water purification and/or dewatering of sludges and/or sediments, as well as to the use of a combination of a phyllosilicate and a surface-treated calcium carbonate for reducing the amount of polymeric flocculation aids in water and/or sludges and/or sediments and to a composite material comprising at least one surface-treated calcium carbonate, at least one phyllosilicate and impurities originated from different sources obtainable by said process.

Surface-treated calcium carbonate and phyllosilicate and its use in water purification

The invention relates to a surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions, to a method for binding and bioremediating hydrocarbon-containing compositions as well as to the use of surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions and to a composite material comprising the surface-treated calcium carbonate and a hydrocarbon-containing composition.

Surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions

The present invention concerns a process for treating water and the use of calcium carbonate in such a process. In particular, the present invention is directed to a process for remineralization of water comprising the steps of providing feed water, and injecting gaseous carbon dioxide and a slurry into the feed water, wherein the slurry comprises micronized calcium carbonate.

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The invention concerns a PROCESS for the preparation of cement/mortar/concrete (for simplicity: 'cement') compositions or systems, (hereafter 'cement' compositions or systems for simplicity), of a general known type, in which the filler(s) is/are comprising or consist of &#x201c;calcium carbonate-based filler(s)&#x201d;, comprising at least one step where the said filler(s) is/are treated with an efficient treating amount of at least one treating agent consisting of or comprising superplastifier(s). The main purpose of this invention is to build a process aimed at providing improved, &#x201c;High performance&#x201d;, FLUID, cement or mortars or concrete systems or compositions having an improved compacity, an improved flowability, and globally speaking a definitely improved &#x201c;workability&#x201d;, and &#x201c;regularity&#x201d; of the properties of the final systems. The present invention also concerns a filler for &#x201c;cement&#x201d; compositions, characterized in that if consists of, or comprises, a calcium-carbonate-based filler or blends of same, pre-treated with an &#x201c;efficient amount&#x201d; of at least one superplastifier.

Process for the preparation of cement, mortars, concrete compositions containing a calcium carbonate&#x2014;based filler (pre)&#x2014;treated with a superplasticizer, compositions and cement products obtained and their applications

Process for the preparation of cement/mortar/concrete compositions or systems, (for simplicity hereafter 'cement' compositions or systems or even 'cements'), of a generally known type containing low or medium (standard) &#x201c;filler(s)&#x201d;, and/or optionally HP filler(s), as carbonate-based filler(s), namely coarse low or medium calcium carbonate(s), namely coarse marble(s); Product comprising, or consisting of, the pre-blend (A) of coarse, low or medium (or optionally HP) &#x201c;calcium carbonate-based filler&#x201d; pre-blended with at least an UF; Aqueous compositions (B) obtained by mixing the above pre-blend (A) of coarse filler(s) with UF(s) with an aqueous system such as mix water, aqueous mix fluid; Product (C) consisting of, or comprising, the pre-blend (A) or the compositions (B), treated or pretreated with at least one superplastifier or aqueous system containing superplastifier(s); Cement and Use of cement.

Process for the preparation of cement, mortars, concrete compositions containing a calcium carbonate-based filler treated with an ultrafine filler and a superplastifier, compositions and cement products obtained and their applications

The present invention concerns a process for treating water and the use of calcium carbonate in such a process. In particular, the present invention is directed to a process for remineralization of water comprising the steps of (a) providing feed water having a concentration of carbon dioxide of at least 20 mg/l, preferably in a range of 25 to 100 mg/l, and more preferably in a range of 30 to 60 mg/l, (b) providing an aqueous slurry comprising micronized calcium carbonate, and (c) combining the feed water of step (a) and the aqueous slurry of step (b) in order to obtain remineralized water.

The invention concerns a PROCESS for the preparation of cement/mortar/concrete (for simplicity: 'cement') compositions or systems, (hereafter 'cement' compositions or systems for simplicity), of a general known type, in which the filler(s) is/are comprising or consist of &#x201c;calcium carbonate-based filler(s)&#x201d;, comprising at least one step where the said filler(s) is/are treated with an efficient treating amount of at least one treating agent consisting of or comprising superplastifier(s). The main purpose of this invention is to build a process aimed at providing improved, &#x201c;High performance&#x201d;, FLUID, cement or mortars or concrete systems or compositions having an improved compacity, an improved flowability, and globally speaking a definitely improved &#x201c;workability&#x201d;, and &#x201c;regularity&#x201d; of the properties of the final systems. The present invention also concerns a filler for &#x201c;cement&#x201d; compositions, characterized in that if consists of or comprises, a calcium-carbonate-based filler or blends of same, pre-treated with an &#x201c;efficient amount&#x201d; of at least one superplastifier.

Process for the preparation of cement, mortars, concrete compositions containing a calcium carbonate-based filler (pre)&#x2014;treated with a superplasticizer, compositions and cement products obtained and their applications

The present invention relates to a dry blasting process for the cleaning of solid surfaces as well as special abrasive pigments suitable therefor and a method for their production.

Growing community of inventors

Meilen, Switzerland

Michael Skovby