A threading apparatus for transporting an electrode plate includes an oven, a first guide rail and a second guide rail, and a threading assembly. The first guide rail and the second guide rail are spaced apart from each other inside the oven in a first direction. A first opening and a second opening are respectively provided on a surface of the first guide rail and a surface of the second guide rail that face each other. Two ends of the threading assembly in the first direction are movably disposed in the first guide rail and the second guide rail through the first opening and the second opening, respectively. The threading assembly is configured to be connected to the electrode plate for transporting the electrode plate inside the oven.

A threading apparatus for transporting an electrode plate includes an oven, a first guide rail and a second guide rail, and a threading assembly. The first guide rail and the second guide rail are spaced apart from each other inside the oven in a first direction. A first opening and a second opening are respectively provided on a surface of the first guide rail and a surface of the second guide rail that face each other. Two ends of the threading assembly in the first direction are movably disposed in the first guide rail and the second guide rail through the first opening and the second opening, respectively. The threading assembly is configured to be connected to the electrode plate for transporting the electrode plate inside the oven.

A vertical-type firing apparatus for a positive electrode material for a secondary battery, for vertically moving and firing the positive electrode material for the secondary battery, comprises: a vertical-type firing furnace including an exhaust part, an air supply part, and a firing space positioned between the exhaust part and the air supply part; and a heater for heating the firing space of the vertical-type firing furnace, wherein the firing space includes a temperature-raising space, a cooling space, and a temperature-maintaining space located between the temperature-raising space and the cooling space, and the temperature of the temperature-maintaining space is higher than the temperature of the temperature-raising space and the temperature of the cooling space.

A vertical-type firing apparatus for a positive electrode material for a secondary battery, for vertically moving and firing the positive electrode material for the secondary battery, comprises: a vertical-type firing furnace including an exhaust part, an air supply part, and a firing space positioned between the exhaust part and the air supply part; and a heater for heating the firing space of the vertical-type firing furnace, wherein the firing space includes a temperature-raising space, a cooling space, and a temperature-maintaining space located between the temperature-raising space and the cooling space, and the temperature of the temperature-maintaining space is higher than the temperature of the temperature-raising space and the temperature of the cooling space.

A shuttle kiln according to certain aspects includes at least one flue channel and multiple flue risers in fluid communication with the flue channel, and at least one shuttle defining multiple exhaust shafts arranged above the multiple flue risers, wherein at least one radiation blockers is arranged above outlet ports of the at least one shuttle. Such a configuration blocks line-of-sight radiant heat transfer between (i) heated surfaces above the shuttle within the kiln housing and (ii) outlet ports of the exhaust shafts, thereby enhancing radiant heat retention and reducing temperature variability within a kiln cavity of the shuttle kiln.

A shuttle kiln according to certain aspects includes at least one flue channel and multiple flue risers in fluid communication with the flue channel, and at least one shuttle defining multiple exhaust shafts arranged above the multiple flue risers, wherein at least one radiation blockers is arranged above outlet ports of the at least one shuttle. Such a configuration blocks line-of-sight radiant heat transfer between (i) heated surfaces above the shuttle within the kiln housing and (ii) outlet ports of the exhaust shafts, thereby enhancing radiant heat retention and reducing temperature variability within a kiln cavity of the shuttle kiln.

A continuous heating apparatus includes: a conveyance tray configured to place an object to be heated; a conveying mechanism configured to convey the conveyance tray; a blowing mechanism configured to blow hot air in a direction transverse to a conveyance direction of the conveyance tray; and a pair of first straightening plates provided at upstream and downstream ends of the conveyance tray in the conveyance direction of the conveyance tray.

A continuous heating apparatus includes: a conveyance tray configured to place an object to be heated; a conveying mechanism configured to convey the conveyance tray; a blowing mechanism configured to blow hot air in a direction transverse to a conveyance direction of the conveyance tray; and a pair of first straightening plates provided at upstream and downstream ends of the conveyance tray in the conveyance direction of the conveyance tray.