S.a. Lhoist Recherche Et Developpement

S. A. Lhoist Recherche Et Developpment

Parexgroup Sa

Paul Wurth S.a.

Lloist Recherche Et Developpement S.a.

Universitéde Liége

Alain Laudet

Amandine Gambin

Daniel Daviller

Etienne Van Tichelen

Alain Brasseur

Lucien Marie Louis Joseph Destexhe

Daniel Antoine Angel Puiatti

Jean-Luc Roth

Marion Lorgouilloux

Marc Pelletier

Jean-Paul Pirard

Olivier Nyssen

Olivier Francoisse

Ludivine Piezanowski

Xavier Pettiau

Erwan Gueguen

R&eacute;gis Poisson

Henri Ren&eacute; Langelin

Olivier Fran&ccedil;oisse

A method for producing a mixed calcium and magnesium compound comprising the slaking of quicklime with a magnesium hydroxide suspension, forming solid particles, said slaking by non-wet means forming said solid particles comprising a calcium phase and a magnesium phase intimately bonded to each other and of homogeneous volume distribution, and a mixed compound comprising a calcium phase and a magnesium phase.

Mixed calcium and magnesium compound and method for producing same

A method for treating a gas is shown which includes the steps of: injecting a powdered compound into the gas line, injecting an aqueous phase in droplet form into the line, capturing pollutants from the gases, and recovering the powdered compound separately. The step for injecting an aqueous phase in droplet form is done so as to moisten those particles of powdered compound in the gas line, when they are injected.

Method and device for treating gas by injecting a powdered compound and an aqueous phase

A mortar composition in the form of a dry powder, ready for use, comprising at least one powdery binder and at least one aggregate, as well as possibly at least one standard additive and/or adjuvant, and formed from particles, at least some of which, referred to as fine particles, are liable to produce an emission of dust, characterized in that it also comprises a fluid additive that consists of least one non-polar hydrocarbon organic substance and that has a capacity for agglomeration of the said fine particles, and in that the dry mortar composition comprises agglomerates of line particles formed by the fluid additive.

Mortar composition, method of preparation thereof and use thereof

The invention relates to a solid mineral composition of heavy metals, in particular mercury, in flue gas, to a method for preparing such a solid mineral compound and to the use thereof for reducing heavy metals, in particular mercury, in flue gas, by placing the flue gas in contact with the solid mineral composition.

Solid mineral composition, method for preparing same and use thereof for reducing heavy metals in flue gas

A mortar composition in the form of a dry powder, ready for use, comprising at least one powdery binder and at least one aggregate, as well as possibly at least one standard additive and/or adjuvant, and formed from particles, at least some of which, referred to as fine particles, are liable to produce an emission of dust, characterized in that it also comprises a fluid additive that consists of least one non-polar hydrocarbon organic substance and that has a capacity for agglomeration of the said fine particles, and in that the dry mortar composition comprises agglomerates of fine particles formed by the fluid additive.

The invention relates to a powder composition based on a calcium/magn&#xe9;sium compound having formula (I), xCaA.(1&#x2212;x)[yMgA+(1&#x2212;y)MgO], in which A is a group &#x2550;(OH)or &#x2550;COand x and y are mole fractions where 0&#x3c;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 &#x3bc;m.

Powdery composition based on a calco-magnesian compound

Disclosed is a process and apparatus for the treatment of divided metal residues contaminated by one or more organic compounds, including mixing, inside a chamber, of metal residues with at least one calcium/magnesium compound capable of reacting exothermically with water; exothermic reaction of the at least one calcium/magnesium compound with the water that the metal residues contain; rise in temperature of the metal residues subject to an exothermic reaction; dehydration of the metal residues during this exothermic reaction; oxidation of the organic compounds during the mixing, by bringing the metal residues contaminated by one or more organic compounds mixed with the at least one calcium/magnesium compound into contact with a gas stream containing at least partly oxygen; and removal from the chamber of a handleable dehydrated treated product having a residual content of organic compounds of less than 1% by weight of the treated product.

Process for the treatment of contaminated metal residues and apparatus for implementing it

Powdered lime composition having a BET specific surface area that is equal to or greater than 25 m/g and a BJH total pore volume obtained from nitrogen desorption that is equal to or greater than 0.1 cm/g, and furthermore comprising an alkali metal. The alkali metal content is equal to or greater than 0.2% and equal to or less than 3.5% based on the total weight of the composition. There is also described a method of preparing the composition and use thereof to reduce flue gases.

Powdered lime composition, method of preparing same and use thereof

A method for reducing heavy metals, in particular in mercury, present in flue gases, includes the step of bringing the flue gases into contact with a particular class of sorbent material in the dry state. A preferred class of dry sorbent materials can be provided from a mineral compound selected from among halloysites and phyllosilicates of the palygorskite subgroup and the sepiolite subgroup of the palygorskite-sepiolite group according to the Dana classification. Mineral compounds of this group have been shown to provide a reduction in heavy metals, in particular in mercury, present in flue gases.

Method for reducing heavy metals in flue gases

The invention concerns a product based on calcium oxide in the form of rough grains, comprising a protective film coating the grains, based on at least a film-forming compound, which is solid at room temperature and which, when applied on the grains, is in solution or in emulsion in a vaporable aqueous phase. The invention also concerns a method for making said product.

Calcium oxide product and method for making same

Composition for treating and stabilizing soils, in particular wet soils, comprising, in the form of a powder having a particle size less than 5 mm, quicklime and/or calcium-based hydraulic binders, as well as a non-aqueous fluid additive capable of agglomerating the finer particles of the composition together.

Compositions for treating soils, the process for their preparation and the use thereof

Composition for treating and stabilizing soils, in particular wet soils, comprising, in the form of a powder having a particle size less than 2 mm, quicklime and/or calcium-based hydraulic binders, as well as a non-aqueous fluid additive capable of agglomerating the finer particles of the composition together.

Compositions for treating soils, method of preparation and use thereof

The present invention is a Ca(OH),particle composition and a method of making the composition, the composition consisting essentially of dried calcium hydroxide particles having a moisture content of less than 2 percent by weight of the total composition, a specific surface area greater than 30 m,/g, a total nitrogen desorption pore volume of at least 0.1 cm,/g, and a CO,content of less than 2 percent by weight of the total composition, the aforementioned particles being in the form of a mixture comprising first fraction of particles having a size of less than 32 micrometers and a second fraction of particles of a size greater than 32 micrometers, the weight percent of the second fraction ranging from 20 to 50 percent, the aforementioned particles having a nitrogen desorption pore volume consisting of pores with a diameter ranging from 100 to 400 Angstroms.

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Namur, Belgium

Alain Laudet