To treat organic sludge while keeping facility costs, cement production efficiency, and a reduction in clinker production amount to a minimum. An organic sludge treatment device includes: a fractionation device 7 that fractionates a preheated raw material R2 from a preheater cyclone 4C excluding a bottommost cyclone of a cement burning device 1; a mixing device 8 that mixes an organic sludge S with the fractionated preheated raw material, and that dries the organic sludge using sensible heat of the preheated raw material; and a supply device (mixture chute 12, double-flap damper 13, shut damper 14) that supplies a mixture M from the mixing device to a calciner furnace 5 of the cement burning device or to a duct disposed between a kiln inlet portion of a cement kiln 2 and the calciner furnace. The treatment device may be provided with an introduction device for introducing an exhaust gas G2 including dust, odor and water vapor from the mixing device to a gas outlet of a bottommost cyclone 4A of the cement burning device.

To treat organic sludge while keeping facility costs, cement production efficiency, and a reduction in clinker production amount to a minimum. An organic sludge treatment device includes: a fractionation device 7 that fractionates a preheated raw material R2 from a preheater cyclone 4C excluding a bottommost cyclone of a cement burning device 1; a mixing device 8 that mixes an organic sludge S with the fractionated preheated raw material, and that dries the organic sludge using sensible heat of the preheated raw material; and a supply device (mixture chute 12, double-flap damper 13, shut damper 14) that supplies a mixture M from the mixing device to a calciner furnace 5 of the cement burning device or to a duct disposed between a kiln inlet portion of a cement kiln 2 and the calciner furnace. The treatment device may be provided with an introduction device for introducing an exhaust gas G2 including dust, odor and water vapor from the mixing device to a gas outlet of a bottommost cyclone 4A of the cement burning device.

The invention relates to a method for producing a binder from slag for conditioning sludges/dredged material, soils containing water and for the neutralization of acids. According to the invention, the slag from a waste incinerator is crushed, then metal is removed and the crushed slag is graded into a fraction greater than 2.0-3.0 mm and a fraction smaller than 2.0-3.0 mm, the fraction 0/2.0-0/3.0 mm is dried in a dryer to a terminal humidity less than 1.5 wt. %-2.5 wt. %, as a result of which the pozzolanic properties of the slag are reactivated, the yield from the dryer is further crushed in a high-speed impact mill to a stable cubic grain structure and the metal released in this process is removed, and the 0/500-0/750 m fraction forming the binder is separated from this crushed slag.

The invention relates to a method for producing a binder from slag for conditioning sludges/dredged material, soils containing water and for the neutralization of acids. According to the invention, the slag from a waste incinerator is crushed, then metal is removed and the crushed slag is graded into a fraction greater than 2.0-3.0 mm and a fraction smaller than 2.0-3.0 mm, the fraction 0/2.0-0/3.0 mm is dried in a dryer to a terminal humidity less than 1.5 wt. %-2.5 wt. %, as a result of which the pozzolanic properties of the slag are reactivated, the yield from the dryer is further crushed in a high-speed impact mill to a stable cubic grain structure and the metal released in this process is removed, and the 0/500-0/750 m fraction forming the binder is separated from this crushed slag.

The present invention describes a hydraulic cement composition, process and use thereof, wherein the composition comprises a hydraulic cement composition with increased resistance against carbon dioxide (CO.sub.2) for application in reservoirs such as oil and gas and carbon capture and storage (CCS) wells; with improved performance of cement paste formulations as a material for application in primary, secondary cementing, recovery and/or plugging operations, of reservoirs/wells that operate with high CO.sub.2 content; as a technological alternative to guarantee the integrity of wells in CO.sub.2-rich environments for long periods of time, without any additional intervention to the already current operational procedures for cementing wells, and with cost reduction in relation to class G cement (currently, the main raw material); and sufficient chemical resistance to carry out enhanced oil (EOR) and gas (EGR) recovery by injecting high levels of CO.sub.2, increasing reservoir pressure throughout the extraction period of hydrocarbon reservoirs.

The present invention describes a hydraulic cement composition, process and use thereof, wherein the composition comprises a hydraulic cement composition with increased resistance against carbon dioxide (CO.sub.2) for application in reservoirs such as oil and gas and carbon capture and storage (CCS) wells; with improved performance of cement paste formulations as a material for application in primary, secondary cementing, recovery and/or plugging operations, of reservoirs/wells that operate with high CO.sub.2 content; as a technological alternative to guarantee the integrity of wells in CO.sub.2-rich environments for long periods of time, without any additional intervention to the already current operational procedures for cementing wells, and with cost reduction in relation to class G cement (currently, the main raw material); and sufficient chemical resistance to carry out enhanced oil (EOR) and gas (EGR) recovery by injecting high levels of CO.sub.2, increasing reservoir pressure throughout the extraction period of hydrocarbon reservoirs.

Provided is a high-strength self-healing capsule and a supporting production process thereof, belongs to the field of self-healing of concrete, comprising: healing agent and maltose; further comprising: mixing cement, silica fume and expansive materials evenly to obtain healing agent powder; mixing the healing agent powder with maltose to obtain healing agent composite powder; pre-pressing the healing agent composite powder to form fine granules; sieving the fine granules made from the pre-pressing, and granulating to obtain capsule core granules; and spraying polyvinyl alcohol (PVA) solution to the capsule core granules, while blowing hot air to remove moisture on the surface of the capsule core granules, for the PVA solution to form a film on the surface of the capsule core granules, drying, and then obtaining. On the basis of the process of the present invention, according to the engineering service environment and use requirements of the cement-based materials, suitable healing agent raw materials can be selected and combined to efficiently produce capsules, so that they can play a targeted role in self-healing.

Provided is a high-strength self-healing capsule and a supporting production process thereof, belongs to the field of self-healing of concrete, comprising: healing agent and maltose; further comprising: mixing cement, silica fume and expansive materials evenly to obtain healing agent powder; mixing the healing agent powder with maltose to obtain healing agent composite powder; pre-pressing the healing agent composite powder to form fine granules; sieving the fine granules made from the pre-pressing, and granulating to obtain capsule core granules; and spraying polyvinyl alcohol (PVA) solution to the capsule core granules, while blowing hot air to remove moisture on the surface of the capsule core granules, for the PVA solution to form a film on the surface of the capsule core granules, drying, and then obtaining. On the basis of the process of the present invention, according to the engineering service environment and use requirements of the cement-based materials, suitable healing agent raw materials can be selected and combined to efficiently produce capsules, so that they can play a targeted role in self-healing.

Embodiments relate to use of Limestone Rock Aggregate (LRA) as a component used to manufacture clinker, wherein the clinker is used in the manufacture of Portland cement. LRA is a naturally occurring limestone deposit that has been impregnated with various bituminous and hydrocarbon components, including asphaltenes and lighter hydrocarbons. Because of the presence of hydrocarbon components, LRA is energy positive making it easier (e.g., requiring less energy) to kiln heat than pure, or common, limestone. As will be explained herein, the LRA can be treated before being used as a component cement manufacture. The treatment of the LRA can involve removal, or extraction, of certain bituminous material (e.g., light hydrocarbons from the LRA). This extracted bituminous material can be used in other material processes (e.g., crude oil refining). The treatment of LRA can also involve manipulating the gradation of crushed LRA material to improve its minerology for cement production.

Embodiments relate to use of Limestone Rock Aggregate (LRA) as a component used to manufacture clinker, wherein the clinker is used in the manufacture of Portland cement. LRA is a naturally occurring limestone deposit that has been impregnated with various bituminous and hydrocarbon components, including asphaltenes and lighter hydrocarbons. Because of the presence of hydrocarbon components, LRA is energy positive making it easier (e.g., requiring less energy) to kiln heat than pure, or common, limestone. As will be explained herein, the LRA can be treated before being used as a component cement manufacture. The treatment of the LRA can involve removal, or extraction, of certain bituminous material (e.g., light hydrocarbons from the LRA). This extracted bituminous material can be used in other material processes (e.g., crude oil refining). The treatment of LRA can also involve manipulating the gradation of crushed LRA material to improve its minerology for cement production.