Abstract: A facility for grinding inorganic material include a roller press, a first static separator having an intake supplied with raw material, a dynamic separator having an intake connected to a first output of the first static separator, a ventilation circuit provided through the first static separator and the dynamic separator, and a second static separator having an intake that is connected to an output of the roller press. The first static separator includes two outputs, one for low-granulatory matter and one for larger granulatory matter, whereby the second output is connected to the roller press. The dynamic separator further includes a first output for particles having the desired granulometry and a second output for matter with larger granulometry connected to an intake of the roller press. The ventilation circuit participates in the separation, drying, and transport of low-granulometry particles.

Abstract: The invention concerns a plant (50) for crushing mineral materials comprising:—a hermetic enclosure (2);—at least one press (30) housed inside the enclosure (2), arranged to crush the mineral materials;—at least a first separator (42) housed inside the enclosure (2), arranged to separate: residual coarse particles from the roller press (30); and fine particles and intermediate particles from the roller press (30);—a second separator (27) housed inside the enclosure (2), arranged to separate the fine particles from the intermediate particles; and—suction means configured to extract only the fine particles via a first extraction duct (8).

Abstract: A cement clinker manufacturing plant that includes a plant for producing purified syngas, obtained from solid waste, and process for transferring ash recovered from the ash pan of the gasifier to at least one inlet of the feedstock conversion device, which the plant includes, and/or of the furnace for the purpose of incorporating said ash into the feedstock; and a process for conveying the purified syngas to the main tuyere of the furnace and/or to at least one inlet of the feedstock conversion device.

Abstract: The present invention relates to a novel iron-doped sulphoaluminate-belite clinker, a process for preparing this clinker, and also the use of the clinker for the preparation of hydraulic binder and, consequently, of grout, concrete or mortar.

Abstract: The invention relates to a building material (M2), which can be produced by combining 30 to 70% by weight of a cement or respectively hydraulic binder, 20 to 80% by weight of water and 0.05 to 15% by weight of a porous and/or pore-forming material; or by combining 10 to 80% by weight of a cement or respectively hydraulic binder, 10 to 80% by weight of a pulverulent and/or granular mineral filler, 20 to 80% by weight of water and 0.05 to 15% by weight of a porous and/or pore-forming material; and in each case by subsequent mixing of the combined components for 1 to 15 minutes. The invention furthermore relates to a building system element (1; 2) with a first section (11; 21) containing particularly compact solid particles distributed in a hardened cement matrix (M1) and fixed thereby, and with a second section (12; 22) containing pores distributed in a hardened cement matrix (M2). This second section (12; 22) can be composed of the building material (M2) according to the invention.

Abstract: The invention relates to a method for manufacturing a sulfoaluminous or belitic sulfoaluminous clinker from a raw mix formed from a mixture including minerals containing calcium, aluminum, silica, iron, and sulfur, preferably in sulfate form, and is characterized in that the method comprises the steps including: at least partially dehydrating and decarbonating the mixture through placement in a vertical kiln (1) comprising a substantially vertical chamber (2) wherein the mixture is heated, the chamber (2) of the vertical kiln (1) being supplied with hot gases the temperature of which is between 900 and 1150° C.

Abstract: The invention relates to a brick (1) made from a material comprising vegetable fibres agglomerated using a binder (such as hemp concrete), said brick being provided with a groove (9, 11) and a tongue (5, 7) allowing the dry-joint connection of bricks. The invention also relates to a method for constructing a building using such bricks.

Abstract: The invention relates to a facility for grinding inorganic material comprising: a means (1) for supplying raw material; a means (2) for detecting metal material coupled to a discharge circuit (3); a first static separator (4); a roller press (5); a dynamic separator (6); a ventilation circuit (7); and a circuit (8) for circulating the finished product. The press is connectable by means of a conveyance system (25) having a diverting circuit (26) or a second static separator (27), at least one of the outlets (28) of which is connected to the dynamic separator (6).

Abstract: The present invention relates to a novel iron-doped sulphoaluminate-belite clinker, a process for preparing this clinker, and also the use of the clinker for the preparation of hydraulic binder and, consequently, of grout, concrete or mortar.

Abstract: The invention relates to a novel sulfoaluminous clinker, to a method for preparing said clinker, and to the use of said clinker for preparing a hydraulic binder and subsequently grout, concrete, or mortar.

Abstract: The invention relates to a novel sulfoaluminous clinker, to a method for preparing said clinker, and to the use of said clinker for preparing a hydraulic binder and subsequently grout, concrete, or mortar.

Abstract: The invention relates to a method for manufacturing a sulfoaluminous or belitic sulfoaluminous clinker from a raw mix formed from a mixture including minerals containing calcium, aluminum, silica, iron, and sulfur, preferably in sulfate form, and is characterized in that the method comprises the steps including: at least partially dehydrating and decarbonating the mixture through placement in a vertical kiln (1) comprising a substantially vertical chamber (2) wherein the mixture is heated, the chamber (2) of the vertical kiln (1) being supplied with hot gases the temperature of which is between 900 and 1150° C; extracting the dehydrated and decarbonated mixture from the vertical kiln (1) and conveying the same in a continuous kiln (4) comprising a furnace (5) and a transporting means (6) for transporting the mixture across the furnace (5); heating the mixture from the vertical kiln (1) by passing the mixture through the furnace (5) via the transporting means (6) such that a clinkerization of the mixture is ob

Abstract: The invention relates to a hydraulic binder containing, in percentage by weight: from 1.1 to 9% of tricalcium aluminate from 1.5 to 13.5% of tetracalcium ferroaluminate from 0.5 to 1.5% of dodecacalcium heptaaluminate from 0.5 to 1.5% of tetracalcium trialuminate sulphate from 0 to 0.8% of dicalcium silicoaluminate from 5 to 70% of pozzolanic material(s) from 0 to 6% of calcium sulphate the remainder being composed of the non-aluminous constituents of at least one Portland-type clinker. It also relates to concretes or mortars prepared using a binder of this type.

Abstract: The invention relates to a hydraulic binder containing, in percentage by weight: from 1.1 to 9% of tricalcium aluminate from 1.5 to 13.50% of tetracalcium ferroaluminate from 0.5 to 1.50% of dodecacalcium heptaaluminate from 0.5 to 1.50% of tetracalcium trialuminate sulphate from 0 to 0.8% of dicalcium silicoaluminate from 5 to 70% of pozzolanic material(s) from 0 to 6% of calcium sulphate the remainder being composed of the non-aluminous constituents of at least one Portland-type clinker. It also relates to concretes or mortars prepared using a binder of this type.

Abstract: The invention relates to a process for the manufacture of cement, whereby a metal oxide known for its catalytic action in the reduction of nitrogen oxides NOx, selected from the group consisting of CuO, Co3O4, Mn3O4, Fe2O3, SnO2, NiO, ZnO, V2O5 and TiO2 is injected into the cement plant kiln flame and/or the precalcination zone flame if there is one.

Abstract: The invention concerns a composition in dry state for mortar or concrete, comprising a cement and an antishrinkage agent. The invention is characterized in that the antishrinkage agent consist of a calcium sulphate, particularly an anhydrous calcium sulphate, associated with at least a glycol ether.

Abstract: The invention concerns a hydration modifying agent for mortar and concrete comprising a combination of 30 to 80% of calcium sulphate, 3 to 60% of ethylene/propylene oxide copolymer and 0.5 to 6% of an activator for the copolymer. The invention also concerns a Portland dry cement comprising 2 to 10 wt. % of said hydration modifying agent and a method for preparing such a mortar or concrete composition, and a self-spreading concrete topping made from said mortar or concrete composition.