An accelerated carbonatation method including the following steps: a) providing recycled concrete granulates with a grain size smaller than or equal to a value V.sub.1 being between 1 mm and 6 mm, in other words a 0/V.sub.1 sand; b) performing on the 0/V.sub.1 sand a separation step by defining a granulometric cut of a determined value V.sub.2 being between 0.1 mm and 0.2 mm so as to obtain: a 1st fraction whose grain size is less than V.sub.2, and a 2nd fraction whose grain size is between V.sub.2 and V.sub.1; c) subjecting the 2nd fraction to an accelerated carbonatation step in a dynamic carbonator so as to obtain carbonated recycled concrete granulates. Also, a method for valorizing concrete wastes and industrial gaseous discharges implementing the accelerated carbonatation method, in particular the gaseous discharges of a cement plant.

A production line combining on-site mixing and construction for a green and ultra-high-performance concrete includes a concrete manufacturing area and raw material stacking area located directly at a construction site. A mixing equipment is provided on the concrete manufacturing area. A concrete discharge end of the mixing equipment is connected to a construction pouring area through a concrete conveying device. A plurality of quantitative material packs and a transfer mechanism are provided in the raw material stacking area. The transfer mechanism is configured for both the stacking of the plurality of quantitative material packs and the transfer of at least one package per time to the mixing equipment. The production line features a straightforward overall structure, convenient operation, cost-effective equipment investment, minimal space occupancy, and enables integrated on-site manufacturing and pouring of concrete.

A process for preparing green ultra-high-performance concrete involves the preparation of coarse and fine raw materials of engineered sand and stone aggregates in the mechanism sand and stone aggregate production line, and the transportation of high-entropy cementitious powder prepared in the powder production line to the construction site. The process utilizes quantitative packaging or precise measurement on a modular intelligent mixing production line to proportion the ingredients, which are then automatically conveyed to the intelligent mixing equipment for the production of ultra-high-performance concrete or mortar. The concrete is rapidly conveyed to the concrete storage area and immediately poured into the desired shape using seamless pumping, belt conveyance, or bucket lifting methods. This invention effectively improves the processing, transportation, proportioning, and measurement processes of raw materials, enabling integrated on-site batching and construction of concrete.

A method and an apparatus for high-throughput preparation of a cement-based material are released and belong to the technical field of cement production. According to the technical solution of the present application, a single-mine, a single-phase or a unit components maintaining specific hydration hardening characteristics are used as structural units, and the method comprises the following steps that (1) the structural units are placed in storage tubes X1, X2, X3 . . . Xn respectively; (2) the materials in the storage pipes are put according to the composition design proportion of the cement-based material, and Y1, Y2, Y3 . . . Ym of mixed materials are prepared; (3) fully and uniformly mixing the Y1, Y2, Y3 . . . Ym of mixed materials through a uniform mixing device; and 4) respectively filling the Y1, Y2, Y3 . . . Ym of uniformly mixed materials into storage tanks Z1, Z2, Z3 . . . Zm to prepare m groups of cement-based material samples. The method and device are easy to operate and high in applicability, and the material research and development manpower and resource cost can be greatly reduced.

One example of correlating energy to mix well cement slurry under laboratory conditions to field conditions can be implemented as a method to determine energy to mix cement slurry. Electrical power supplied to an electric mixer in mixing a specified well cement slurry is measured. An energy to mix the specified well cement slurry is determined from the measuring. The determined energy to mix the specified well cement slurry and specifications of field equipment for use in mixing the specified well cement slurry at a well site are compared. The field equipment is a different configuration than the electric mixer. Based on the comparing, it is determined whether the well cement slurry needs redesigning according to capabilities of the field equipment.

A system and method for comprehensive energy recovery and utilization in energy intensive processes is provided. The system comprises a hydrocarbon production system configured to recover hydrocarbons from an underground reservoir; an electricity generation system comprising one or more turbines configured to generate electricity and heated turbine exhaust gases; a heat exchanger configured to receive the heated turbine exhaust gases from the one or more turbines and transfer heat from the heated turbine exhaust gases to a fluid, and configured to output a heated fluid and cooled turbine exhaust gases; a gas separator configured to receive the cooled turbine exhaust gases and separate gases in the cooled turbine exhaust gases; and a fuel source configured to provide hydrocarbon fuel or thermal energy for powering the one or more turbines of the electricity generation system.

A system and method for comprehensive energy recovery and utilization in energy intensive processes is provided. The system comprises a hydrocarbon production system configured to recover hydrocarbons from an underground reservoir; an electricity generation system comprising one or more turbines configured to generate electricity and heated turbine exhaust gases; a heat exchanger configured to receive the heated turbine exhaust gases from the one or more turbines and transfer heat from the heated turbine exhaust gases to a fluid, and configured to output a heated fluid and cooled turbine exhaust gases; a gas separator configured to receive the cooled turbine exhaust gases and separate gases in the cooled turbine exhaust gases; and a fuel source configured to provide hydrocarbon fuel or thermal energy for powering the one or more turbines of the electricity generation system.

Colloidal mixing of cementitious material into a liquid such as water to form a grout slurry for pumping to a location for use includes a mixing tank and a colloidal mixing mill which grinds and pumps the mixed material with the material being repeatedly circulated between the mill and the tank. The colloidal mixing mill includes a housing defining a generally cylindrical chamber containing a rotor shaped to define a clearance of the order of 3 mm between the front and rear wall of the housing and the rotor with holes from a dished front face of the rotor to the rear face to carry the mixed materials to the clearance where a shearing action takes place to shear the particles in the mixed materials prior to exit through the outlet.

A bulk storage plant for providing cement mixtures oil well construction is disclosed. The bulk storage plant includes bulk storage sources, an additive station, a weigh batcher, and a tumble blender. The bulk storage sources are adapted to contain cement ingredients. The additive station is adapted to provide an additive for adjusting cement properties. The weigh batcher is connected to the bulk storage silos and the additive station. The weigh batcher is adapted to receive the cement ingredients from the bulk storage sources and the additive from the additive station. The tumble blender is connected to the weigh batcher and is adapted to receive the cement ingredients and the additive from the weigh batcher. The tumble blender is adapted to blend the ingredients and provide the blended ingredients to one of a temporary storage silo and a storage vessel for transport to the oil well site.

A technique facilitates a drilling operation, e.g. a land-based drilling operation, by enabling a substantial reduction in the number of equipment components. According to an embodiment, a mud pump assembly is provided with at least one mud pump located on a rig positioned at a wellsite. The mud pumps may be run to perform a mud pumping operation by pumping mud downhole during drilling of a borehole, e.g. a wellbore. During stoppage of the mud pumping operation, the same mud pumps are utilized to perform a cementing operation in which cementing fluid is pumped downhole for cementing of casing. The use of the same mud pumps enables the operator to eliminate not only the separate cement pumps otherwise used for the cementing operation but also the motive units that would be associated with those separate cement pumps.