A combustion gas bleeding probe includes a gas pipe for bleeding a part of a combustion gas from a kiln, and a plurality of discharge ports each of which is provided penetrating through the gas pipe and each of which discharges a low-temperature gas in a direction that is perpendicular to a direction of flow of a bleed gas bled by the gas pipe and that is directed toward a center of the flow of the bleed gas. The discharge ports discharge the low temperature gas such that a ratio of a momentum of the low-temperature gas per discharge port to a momentum of the bleed gas satisfies 1.2 to 4.0, and a value (m-1) obtained by dividing a ratio of a wind speed of the low-temperature gas to a wind speed of the bleed gas by an inner diameter of the gas pipe satisfies 1.5 to 3.5.

A system to convert a renewable lower energy material to a higher energy material using residual heat from a steel processing unit is provided. A system comprising a flow through catalytic reactor that selectively catalytically converts methanol into a hydrogen and carbon monoxide stream utilizing a steel processing unit's residual heat, and the subsequent separation and collection and storage of hydrogen with the introduction of the separated carbon monoxide stream into the steel processing unit so as to replace or reduce carbon sources, is also disclosed.

A system to convert a renewable lower energy material to a higher energy material using residual heat from a steel processing unit is provided. A system comprising a flow through catalytic reactor that selectively catalytically converts methanol into a hydrogen and carbon monoxide stream utilizing a steel processing unit's residual heat, and the subsequent separation and collection and storage of hydrogen with the introduction of the separated carbon monoxide stream into the steel processing unit so as to replace or reduce carbon sources, is also disclosed.

A plant for heat treatment of mineral material comprises a reactor having at least one gas inlet for admitting offgases, wherein the reactor comprises an activating region for activating the mineral material and an offgas outlet for ejecting offgases from the reactor, wherein the offgas outlet is connected to the at least one gas inlet in such a way that at least a portion of the offgas is supplied to the reactor. A process for heat treatment of mineral material with a reactor, comprises activating the material in an activating region of the reactor and optionally cooling the material in a cooling region of the reactor, wherein the offgas of the reactor is discharged therefrom, wherein at least a portion of the offgas discharged from the reactor is returned to the reactor.

A plant for heat treatment of mineral material comprises a reactor having at least one gas inlet for admitting offgases, wherein the reactor comprises an activating region for activating the mineral material and an offgas outlet for ejecting offgases from the reactor, wherein the offgas outlet is connected to the at least one gas inlet in such a way that at least a portion of the offgas is supplied to the reactor. A process for heat treatment of mineral material with a reactor, comprises activating the material in an activating region of the reactor and optionally cooling the material in a cooling region of the reactor, wherein the offgas of the reactor is discharged therefrom, wherein at least a portion of the offgas discharged from the reactor is returned to the reactor.

The present disclosure relates to negative-carbon cement (NC2) production, which can be achieved by integrating carbon dioxide hydrogenation and methane pyrolysis into the cement manufacturing process, using hydrogen gas derived from methane pyrolysis as the fuel for heating, and converting any captured carbon dioxide into solid carbon. The solid carbon can be incorporated into building materials such as portland cement and gypsum boards, fixing the carbon to achieve cradle-to-gate emission reduction.

Metallurgical plant (10) for treating steelworks by-products, comprising at least one smelting furnace (11) configured to reduce and smelt the reducible metal oxides present in the by-products, generating fumes (F), and an apparatus (12) associated with the smelting furnace (11) to treat said fumes (F). In particular, the apparatus (12) comprises static means for extracting and separating zinc oxide (ZnO) from the fumes (F).

Metallurgical plant (10) for treating steelworks by-products, comprising at least one smelting furnace (11) configured to reduce and smelt the reducible metal oxides present in the by-products, generating fumes (F), and an apparatus (12) associated with the smelting furnace (11) to treat said fumes (F). In particular, the apparatus (12) comprises static means for extracting and separating zinc oxide (ZnO) from the fumes (F).

The present invention relates to a device for heat-treating solid material, in particular in granular form, wherein the device comprises a kiln and an external heat generator, wherein said kiln comprises at least one sloped sliding surface on which a bed of said solid material slides down within said kiln due to gravity while a hot gas generated by the external heat generator is led through said solid material to heat said solid material to a desired temperature in order to change the substance properties of said solid material. According to the invention, said external heat generator for generating said hot gas is external to said kiln, wherein said kiln further comprises at least one kiln gas inlet through which said hot gas enters said kiln, such that the necessary temperature of said hot gas can be controlled precisely in that said hot gas is generated in said external heat generator, ensuring that the solid material does not experience temperatures above an allowed maximum temperature, and further such that the solid material is not exposed to radiation from a burner.

The present disclosure includes a furnace for heating and/or sintering one or more three-dimensional printed metal parts. The furnace includes a furnace chamber, insulation within the furnace chamber, a retort within the furnace chamber, and one or more getters containing getter material. The retort is configured to receive the one or more three-dimensional printed metal parts.