Holcim Technology Ltd

Eric Brouard

Cédric Comparet

Antoine Creyx

Christophe Levy

Mohsen Ech

Delphine Thomas

Nouffou Tapsoba

Nicolas Richard

Olivier Watt

A process of preparing a cemented paste backfill material, the material including ground mine tailings, a hydraulic binder and water, wherein the solids content of the backfill material is 70-82 wt.-%, the process including a) providing a dry premix, the premix including the hydraulic binder, a superplasticizer and optionally a defoaming agent, b) mixing the dry premix with the ground mine tailings and water.

Process of preparing a cemented paste backfill material

A method for treating polluted soils, includes mixing the soil with a hydraulic binder, wherein the hydraulic binder includes: as the only high-alumina clinker, a high-alumina clinker including more than 80 wt % of mayenite C12A7 phase or a mayenite isotope, the high-alumina clinker making up at least 70 wt % of the weight of the hydraulic binder; and 1 wt % to 30 wt %, relative to the total weight of the binder, of lime.

Method for treating polluted soil by a hydraulic binder with mayenite phase

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Holderbank, Switzerland

Eric Brouard