US Pat. No. 10,138,163

PROCESS FOR MANUFACTURING A MILK OF SLAKED LIME OF GREAT FINENESS AND MILK OF GREAT FINENESS THEREBY OBTAINED

S. A. Lhoist Recherche et...

1. Process for manufacturing a milk of lime of great fineness wherein said milk of lime comprises slaked lime particles in suspension into an aqueous phase, the slaked lime particles having a d50 greater than or equal to 2 ?m and lower than or equal to 6 ?m, measured by means of a laser granulometer in methanol, comprising at least the steps of:(a) adding water to quicklime instead of addition of quicklime to water to obtain a paste of lime and
(b) forming a milk of slaked lime of great fineness with said paste of lime.
US Pat. No. 9,828,292

BINDER COMPOSITION FOR IMPROVED MORTARS AND COATINGS

S. A. Lhoist Recherche et...

1. A binder composition for mortars and coatings, comprising a first conventional mineral component and a second component
based on powdery slaked lime, wherein said second component based on powdery slaked lime has a specific surface area calculated
according to the BET method of less than 12 m2/g and wherein said second component is present in an amount equal to or greater than 12% and equal to or less than 80% by
weight, based on the total weight of the binder composition.
US Pat. No. 10,093,549

HIGH-FINESSE LIMEWATER COMPOSITION

S. A. Lhoist Recherche et...

1. A composition of high reactivity milk of lime comprising particles of slaked lime in suspension in an aqueous phase, characterized in that said particles of slaked lime are composed of slaked lime particles that have a particle size described by a particle size distribution profile that is narrow and monomodal;the composition having a viscosity less than 350 mPa·s (millipascal second), as measured by a standard Brookfield DV-III Rheometer at a speed of rotation of 100 rotations per minute (rpm).

US Pat. No. 9,579,601

METHOD AND DEVICE FOR TREATING GAS BY INJECTING A POWDERED COMPOUND AND AN AQUEOUS PHASE

S. A. Lhoist Recherche et...

1. A method for treating gas having a predetermined flow direction in a gas conduit comprising the steps of
a) injecting a powdery compound into the gas conduit at an injection point of a powdery compound, via a powdery compound injection
piping, said injection piping having an internal face being in contact with said powdery compound and an external face, and
so forming a cloud or flow of particles of powdery compound in said gas conduit at said injection point,

b) injecting a monophasic liquid aqueous phase as droplets into said gas conduit,
c) capturing pollutants of the gases with said powdery compound, and
d) separately recovering said powdery compound enriched in pollutants and the gases depleted in pollutants,
wherein said step for injecting a monophasic liquid aqueous phase as droplets is carried out inside said gas conduit in the
injected cloud or flow of powdery compound particles, so as to humidify these powdery compound particles inside the gas conduit,
during their injection, according to a weight ratio between the monophasic liquid aqueous phase injected as droplets and the
injected powdery compound of greater than or equal to 0.05 and less than or equal to 1.2, said step for injecting a monophasic
liquid aqueous phase being carried out via at least one monophasic liquid aqueous phase injection piping located within a
peripheral space localized around said external face and having an external cover, the method further comprising isolation
of said external face by at least one insulating layer positioned in said peripheral space between said external face and
said external cover.

US Pat. No. 10,266,667

FLAME-RETARDANT AND FIRE-RESISTANT POLYMER COMPOSITIONS MADE FROM LIME HAVING A HIGH SPECIFIC SURFACE

S. A. Lhoist Recherche et...

1. A flame-retardant polymer composition comprising a mineral filler and a polymer, said mineral filler comprising a calcium compound, characterized in that the calcium compound is a fire-resistant additive in the form of calcium hydroxide having a specific surface area computed according to the BET method greater than 25 m2/g and less than 60 m2/g, the mineral filler being incorporated into the flame-retardant polymer composition in an amount from 40 to 75% by weight, based upon the total weight of the flame-retardant polymer composition.

US Pat. No. 10,710,929

MINERAL COMPOSITION BASED ON A MIXED SOLID PHASE OF CALCIUM AND MAGNESIUM CARBONATES AND PROCESS FOR PREPARING SUCH A COMPOSITION

S. A. Lhoist Recherche et...

1. A mineral composition containing a mixed solid phase of synthetic calcium and magnesium carbonates, formed of a crystallized calcic portion and a plate-like form crystallized magnesian portion, the crystals of the calcic portion and those of the magnesian portion being aggregated in a form of composite aggregates, these aggregates themselves being at least partly agglomerated in a form of agglomerates, said calcic portion comprising at least one carbonate selected from the group consisting of calcite and the mixtures of calcite and aragonite, said magnesian portion comprising hydromagnesite in the plate-like form, said aggregates being formed of a calcic core on which hydromagnesite plates are aggregated, said mixed solid phase of carbonates of said mineral composition having a thermal conductivity of 25 to 45 mW/Km for a bulk density of 250 kg/m3 or lower and of 80 kg/m3 or higher measured in accordance with standard EN 459.2, and a Ca/Mg molar ratio higher than 1.2 and equal to or less than 4.0.

US Pat. No. 10,947,157

METHOD FOR MANUFACTURING BRIQUETTES CONTAINING A CALCIUM-MAGNESIUM COMPOUND AND AN IRON-BASED COMPOUND, AND BRIQUETTES THUS OBTAINED

S. A. Lhoist Recherche et...

1. Method for manufacturing a calcium-magnesium composition in the form of briquettes, comprising the following steps:i. supplying a homogeneous pulverulent mixture comprising at least one quick calcium-magnesium compound, said mixture comprising at least 40 wt % of CaO+MgO equivalent relative to the weight of said composition and having a Ca/Mg molar ratio greater than or equal to 1;
ii. feeding a roller press with said homogeneous pulverulent mixture, said roller press being equipped with rollers provided with pockets,
iii. compressing said homogeneous pulverulent mixture in said roller press while obtaining a calcium-magnesium composition in the form of green briquettes, and
iv. collecting said green briquettes
said method being characterized in that said homogeneous pulverulent mixture further comprises an iron-based compound present at a content of at least 20 wt % of Fe2O3 equivalent relative to the weight of said composition, said iron-based compound having a granulometric distribution characterized by a median size d50 below 100 ?m as well as a size d90 below 200 ?m, in that said quick calcium-magnesium compound is quicklime, said quicklime having a value of t60 below 10 min, in that the rollers of the roller press develop linear speeds at the periphery of the rollers between 10 and 100 cm/s and linear pressures between 60 and 160 kN/cm, and in that the method further comprises a thermal treatment of said collected green briquettes at a temperature between 900° C. and 1200° C. for a predetermined duration of between 3 and 20 minutes, while obtaining fired briquettes containing calcium ferrite and having simultaneously a Shatter Test Index less than 8%, and a porosity value greater than or equal to 30%.

US Pat. No. 10,919,776

ULTRA FINE MILK OF LIME COMPOSITION

S. A. Lhoist Recherche et...

1. A method for the production of a milk of lime having a high reactivity defined by a t90 less than or equal to 10 sec, comprising the following consecutive steps of:a. the slaking of a quicklime by applying a proportion by mass of quicklime relative to water which equates to a ratio by weight in grams of quicklime relative to water greater than 1 to 8, and less than 1 to 3 so as to form a lime suspension,
b. particle size cutting of said lime suspension, with the obtaining of at least one coarse first fraction to be ground and a fine second fraction;
c. particle size reduction by wet ball grinding of said at least one coarse first fraction to be ground and
d. obtaining of said milk of lime having a high reactivity.
US Pat. No. 10,919,803

PROCESS FOR MANUFACTURING A MILK OF SLAKED LIME OF GREAT FINENESS AND MILK OF LIME OF GREAT FINENESS THEREBY OBTAINED WITH PROCESS WATER

S. A. Lhoist Recherche et...

1. A process for manufacturing a milk of lime of great fineness comprising at least the steps ofa) providing a lime compound selected from the group consisting of quicklime, a first lime compound and their mixture said first lime compound being, selected front the group consisting of prehydrated lime obtained by the addition of a first water to quicklime, paste of lime obtained by the addition of a second water to quicklime, paste of lime obtained by the addition of a third water to prehydrated lime, paste of lime obtained by the addition of prehydrated lime to a third water and their mixture, and
b) forming a milk of slaked lime of great fineness with, said lime compound by the addition of a fourth water to said lime compound or by the addition of the first lime compound to a fourth water,
characterized in that at least one of the first, second, third or fourth water is process water selected from the group consisting of alkaline water, saline water, sulfate water comprising from 3 to 300 g solute/L and in that at least one of the first, second, third or fourth water is added to said lime compound, said milk of lime of great fineness having slaked lime particles presenting a d50 greater than or equal to 1 ?m and lower than or equal to 6 ?m, measured by laser diffraction using methanol as carrier solvent after screening of the milk of lime at 2 mm through a sieve for removing the grits.

US Pat. No. 10,874,975

SORBENT COMPOSITION FOR AN ELECTROSTATIC PRECIPITATOR

S. A. Lhoist Recherche et...

1. A powdery calcium-magnesium compound comprising at least a calcium-magnesium hydroxide content greater or equal to 80 weight %, with respect to the total weight of the powdery calcium-magnesium compound characterized in that it presents a resistivity at 300° C. (572° F.) (R300) lower than 1E11(1×1011) Ohms·cm and higher than 1E7(1×107) Ohms·cm; andwherein the powdery calcium-magnesium compound is doped with calcium nitrate at an amount greater than or equal to 0.05 weight % and lower or equal to 5 weight % with respect to the total weight of the powdery calcium-magnesium compound.

US Pat. No. 10,669,199

PROCESS FOR MANUFACTURING HIGHLY POROUS SLAKED LIME AND PRODUCT THEREBY OBTAINED

S. A. Lhoist Recherche et...

1. Process for manufacturing highly porous slaked lime having a high specific surface area of at least 30 m2/g and a high pore volume, the high pore volume being comprised by pores with a diameter less than 1000 Angstroms, higher than or equal to 0.15 cm3/g, said process comprising a feeding step of quicklime, a feeding step of water in a feeding zone of a hydrator, a slaking step of said quicklime in a slaking zone of said hydrator and a maturation step in a maturation zone of said hydrator to form slaked lime, characterized in that said feeding step of quicklime and said feeding step of water are performed so as to obtain a water/quicklime ratio comprised between 0.8 and 1.3 by weight, the process further comprising a step of removing vapor generated during said slaking step, said step of removing vapor being performed over at least 90% of the length of said slaking zone to form a raw highly porous slaked lime being a high specific surface area and high pore volume slaked lime.