Abstract: A manufacturing apparatus for providing a reduced cementitious material comprising a heating device, a reducing device, and a cooling device. The reducing device has a first end comprising a gas seal and being connected to the heating device, such that a heated cementitious material from the heating device is feedable to the first end of the reducing device substantially without any gas from the heating device entering the reducing device. The reducing device has a second end connected to the cooling device, such that a reduced cementitious material formed in the reducing device is provided to the cooling device. The reducing device further has transporting means configured to transport cementitious material from the first end to the second end and is configured for receiving a reducing agent or a precursor for a reducing agent.

Abstract: A cement manufacturing plant can include at least one emission abatement mechanism. In some embodiments, the emission abatement mechanism can utilize a plurality of pulsed gases passed through a reactor to treat a solid particulate material passed through the reactor. The pulsed reactant gas can be pulsed through the reactor so that the pulsed gas passes from a middle portion of the reactor to a first end of the reactor at which the solid particulates can be fed into the reactor. In some embodiments, the reactant gas can be output from the first end to a down corner or other reactant gas conduit for transport to a treatment device.

Abstract: A cement manufacturing plant can include at least one emission abatement mechanism. In some embodiments, the emission abatement mechanism can utilize a plurality of pulsed gases passed through a reactor to treat a solid particulate material passed through the reactor. The pulsed reactant gas can be pulsed through the reactor so that the pulsed gas passes from a middle portion of the reactor to a first end of the reactor at which the solid particulates can be fed into the reactor. In some embodiments, the reactant gas can be output from the first end to a down corner or other reactant gas conduit for transport to a treatment device.

Abstract: Filter bag assembly for use in cleaning of process gas comprising an outer tubular filter bag and one or more inner tubular filter bags separately arranged within the outer tubular filter bag, and said one or more inner tubular filter bags also separately arranged within each other, the one or more inner tubular filter bags and the outer tubular filter bags having an open end and a closed end, and at least one of the inner tubular filter bags and/or the outer tubular filter bag being provided with catalytically active material.

Abstract: Filter bag assembly for use in cleaning of process gas comprising an outer tubular filter bag and one or more inner tubular filter bags separately arranged within the outer tubular filter bag, and said one or more inner tubular filter bags also separately arranged within each other, the one or more inner tubular filter bags and the outer tubular filter bags having an open end and a closed end, and at least one of the inner tubular filter bags and/or the outer tubular filter bag being provided with catalytically active material.