Scrap melting process

A scrap melting process which comprises charging a shaft furnace with ferrous scrap and coke, and injecting pulverized coal, waste plastics and oxygen into the furnace through a burner at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal and waste plastics from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap and coke from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and also injecting or charging waste plastics, with injection of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap and coke from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and also injecting or charging waste plastics, with injection of oxygen from the center of the burner, injection of at least pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the furnace through a burner at the tuyere, with injection of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the furnace through a burner at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal, waste plastics, and oxygen into the furnace through a burner at the tuyere, with injection of pulverized coal and waste plastics from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal, waste plastics, and oxygen into the furnace through a burner at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal and waste plastics from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner, with injection of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner, with injection of oxygen from the center of the burner, injection of pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and injecting or charging waste plastics into the pre-combustion chamber of the burner, with injection of at least part of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and injecting or charging waste plastics into the pre-combustion chamber of the burner, with injection of oxygen from the center of the burner, injection of at least part of pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap and coke from the furnace top, and injecting pulverized coal, waste plastics, and oxygen into the furnace through a burner at the tuyere, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of pulverized coal and waste plastics from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap and coke from the furnace top, and injecting pulverized coal, waste plastics, and oxygen into the furnace through a burner at the tuyere, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal and waste plastics from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap and coke from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and also injecting or charging waste plastics and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap and coke from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and also injecting or charging waste plastics and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of oxygen from the center of the burner, injection of at least pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the furnace through a burner at the tuyere, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the furnace through a burner at the tuyere, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal, waste plastics, and oxygen into the furnace through a burner at the tuyere, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of pulverized coal and waste plastics from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process which comprises charging a shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal, waste plastics, and oxygen into the furnace through a burner at the tuyere, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal and waste plastics from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal, waste plastics, and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the combustion zone that forms in front of the tuyere, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of oxygen from the center of the burner, injection of pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and injecting or charging waste plastics into the pre-combustion chamber of the burner, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of at least part of pulverized coal from the center of the burner and injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.

A scrap melting process that employs a shaft furnace equipped at its tuyere with a burner having a pre-combustion chamber in its forward opening, said process comprising charging the shaft furnace with ferrous scrap, coke, and waste plastics from the furnace top, and injecting pulverized coal and oxygen into the pre-combustion chamber of the burner and injecting or charging waste plastics into the pre-combustion chamber of the burner, and also injecting dust into the furnace through the burner and/or any other injection means at the tuyere, with injection of oxygen from the center of the burner, injection of at least part of pulverized coal from its periphery, and additional injection of oxygen from its periphery, so as to mix together pulverized coal and oxygen, thereby achieving rapid combustion of pulverized coal and at least part of waste plastics in the pre-combustion chamber, leading the combustion gas from the forward opening of the burner into the furnace, thereby causing the sensible heat of the combustion gas to melt the scrap and produce molten iron therefrom and recovering the combustion gas, together with the gas resulting from pyrolysis of waste plastics, as a fuel gas without intentional secondary combustion in the furnace.