This invention relates to magnetite-based sintered iron ore wherein a magnetite ore powder, which is not currently utilized owing to its low reducibility index among iron ore materials serving as a main material in iron-making processes, is improved so as to have a high reducibility index, and to a method of manufacturing the same.

An apparatus for the thermal treatment of lump or agglomerated material in a firing machine includes a travelling grate configured to convey the material through the firing machine. A firing chamber has a ceiling and side walls and is configured to generate temperatures required for the thermal treatment. The ceiling has a plurality of openings and the side walls have a plurality of burners that are directed obliquely upwards. A cooling zone is configured to pass cooling gases through the thermally treated material so as to heat the cooling gases. A recuperation tube is configured to recirculate the heated cooling gases to the firing chamber through the openings in the ceiling.

An apparatus for the thermal treatment of lump or agglomerated material in a firing machine includes a travelling grate configured to convey the material through the firing machine. A firing chamber has a ceiling and side walls and is configured to generate temperatures required for the thermal treatment. The ceiling has a plurality of openings and the side walls have a plurality of burners that are directed obliquely upwards. A cooling zone is configured to pass cooling gases through the thermally treated material so as to heat the cooling gases. A recuperation tube is configured to recirculate the heated cooling gases to the firing chamber through the openings in the ceiling.

A method includes the introduction of a first medium into the compartment through an inlet and the heating of the first medium when it is present in the inlet. The heating takes place through the use of a combustion arrangement that is arranged in the inlet and that comprises fuel. The heating, the use of the combustion arrangement, includes in turn the ignition of the fuel, combustion of the fuel, and the transfer of the combustion heat to the first medium that is present at the combustion arrangement in the inlet. The combustion arrangement, is arranged in a region in the inlet, which in turn is arranged outside of the direct passage of the first medium in and through the inlet, such that the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium take place in this region.

A method includes the introduction of a first medium into the compartment through an inlet and the heating of the first medium when it is present in the inlet. The heating takes place through the use of a combustion arrangement that is arranged in the inlet and that comprises fuel. The heating, the use of the combustion arrangement, includes in turn the ignition of the fuel, combustion of the fuel, and the transfer of the combustion heat to the first medium that is present at the combustion arrangement in the inlet. The combustion arrangement, is arranged in a region in the inlet, which in turn is arranged outside of the direct passage of the first medium in and through the inlet, such that the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium take place in this region.

This invention relates to magnetite-based sintered iron ore wherein a magnetite ore powder, which is not currently utilized owing to its low reducibility index among iron ore materials serving as a main material in iron-making processes, is improved so as to have a high reducibility index, and to a method of manufacturing the same.

Method for producing sintered ore in which air above a charged layer containing a gaseous fuel supplied from a plurality of gaseous fuel supplying devices installed in a machine length direction on a downstream of an ignition furnace of a sintering machine is sucked by a wind box disposed below a pallet and is introduced into the charged layer, and the gaseous fuel and the carbon material are combusted inside the charged layer to produce the sintered ore, wherein a total amount of supply of the gaseous fuel supplied from the gaseous fuel supplying devices is set to be constant, the amount of supply of the gaseous fuel supplied from each gaseous fuel supplying devices is increased or decreased depending on an amount of air sucked into the charged layer in a region which each gaseous fuel supplying device is installed, thereby optimizing a supply ratio of the gaseous fuel.

Method for producing sintered ore in which air above a charged layer containing a gaseous fuel supplied from a plurality of gaseous fuel supplying devices installed in a machine length direction on a downstream of an ignition furnace of a sintering machine is sucked by a wind box disposed below a pallet and is introduced into the charged layer, and the gaseous fuel and the carbon material are combusted inside the charged layer to produce the sintered ore, wherein a total amount of supply of the gaseous fuel supplied from the gaseous fuel supplying devices is set to be constant, the amount of supply of the gaseous fuel supplied from each gaseous fuel supplying devices is increased or decreased depending on an amount of air sucked into the charged layer in a region which each gaseous fuel supplying device is installed, thereby optimizing a supply ratio of the gaseous fuel.

A process for recycling a lithium containing battery waste material, the process comprising the step of heat treating the battery waste material in a vessel, wherein the inner surface of the vessel is formed from a chromium-containing alloy with an aluminium diffusion coating.

A process for recycling a lithium containing battery waste material, the process comprising the step of heat treating the battery waste material in a vessel, wherein the inner surface of the vessel is formed from a chromium-containing alloy with an aluminium diffusion coating.