This disclosure provides a waste battery thermal desorption treatment system. The waste battery thermal desorption treatment system includes: a rotary kiln, having a feed port, thermal desorption cavity, heating cavity, discharge port, and first exhaust port; a dust removal apparatus, including a housing with a gas inlet port and a second exhaust port, and a dust removal structure disposed in the housing configured to collect impurities in a gas exhausted from the first exhaust port; a condenser, in communication with the second exhaust port, to condense an electrolyte constituent; and an adsorption column having a defluorination agent for dry defluorination on remaining constituents in the gaseous exhaust. This disclosure resolves the problem of low recycling efficiency of waste lithium batteries in the prior art.

This disclosure provides a waste battery thermal desorption treatment system. The waste battery thermal desorption treatment system includes: a rotary kiln, having a feed port, thermal desorption cavity, heating cavity, discharge port, and first exhaust port; a dust removal apparatus, including a housing with a gas inlet port and a second exhaust port, and a dust removal structure disposed in the housing configured to collect impurities in a gas exhausted from the first exhaust port; a condenser, in communication with the second exhaust port, to condense an electrolyte constituent; and an adsorption column having a defluorination agent for dry defluorination on remaining constituents in the gaseous exhaust. This disclosure resolves the problem of low recycling efficiency of waste lithium batteries in the prior art.

The present invention relates to an electric arc furnace, containing a furnace shell, an electrode, a furnace shell moving mechanism that supports the furnace shell so as to be movable on an installation surface, and a first insulation that electrically insulates between the furnace shell and the furnace shell moving mechanism.

An unshaped product including a particulate mixture containing: a coarse fraction, representing >50%<91% of particulate mixture, in mass percentage, and containing particles size 50 m, coarse particles, and matrix fraction, forming remainder up to 100% of particulate mixture, and containing particles sizes <50 m, product having chemical analysis, in mass percentage based on oxides of product, such: 45%<Al.sub.2O.sub.3, 7.5%<SiO.sub.2<35%, 0%ZrO.sub.2<33%, providing 10%<SiO.sub.2+ZrO.sub.2<54%, 0.15%<B.sub.2O.sub.3<8%, other oxides: <6%, Al.sub.2O.sub.3 forming remainder up to 100%, coarse fraction including more than 15% coarse particles having size >1 mm, in mass percentage based on particulate mixture, matrix fraction having a chemical analysis, in mass percentage based on oxides of matrix fraction, such: Al.sub.2O.sub.3+SiO.sub.2+ZrO.sub.2>86%, providing 35%<Al.sub.2O.sub.3.

An unshaped product including a particulate mixture containing: a coarse fraction, representing >50%<91% of particulate mixture, in mass percentage, and containing particles size 50 m, coarse particles, and matrix fraction, forming remainder up to 100% of particulate mixture, and containing particles sizes <50 m, product having chemical analysis, in mass percentage based on oxides of product, such: 45%<Al.sub.2O.sub.3, 7.5%<SiO.sub.2<35%, 0%ZrO.sub.2<33%, providing 10%<SiO.sub.2+ZrO.sub.2<54%, 0.15%<B.sub.2O.sub.3<8%, other oxides: <6%, Al.sub.2O.sub.3 forming remainder up to 100%, coarse fraction including more than 15% coarse particles having size >1 mm, in mass percentage based on particulate mixture, matrix fraction having a chemical analysis, in mass percentage based on oxides of matrix fraction, such: Al.sub.2O.sub.3+SiO.sub.2+ZrO.sub.2>86%, providing 35%<Al.sub.2O.sub.3.

A system and method for repairing a coke oven having an oven chamber formed from ceramic bricks. A representative system includes a insulated enclosure insertable into the oven chamber and includes removable insulated panels that define an interior area for workers to work in. The insulated enclosure is movable between an expanded configuration and a compact configuration and moving the enclosure to the expanded configuration will decrease the distance between the insulated enclosure and the walls of the oven chamber. Removing the panels exposes the ceramic bricks and allows workers within the interior area to access and the bricks and repair the oven chamber while the oven chamber is still hot. A loading apparatus lifts and inserts the insulated enclosure into the oven chamber. The insulated enclosure can be coupled to additional insulated enclosures to form an elongated interior area.

A system and method for repairing a coke oven having an oven chamber formed from ceramic bricks. A representative system includes a insulated enclosure insertable into the oven chamber and includes removable insulated panels that define an interior area for workers to work in. The insulated enclosure is movable between an expanded configuration and a compact configuration and moving the enclosure to the expanded configuration will decrease the distance between the insulated enclosure and the walls of the oven chamber. Removing the panels exposes the ceramic bricks and allows workers within the interior area to access and the bricks and repair the oven chamber while the oven chamber is still hot. A loading apparatus lifts and inserts the insulated enclosure into the oven chamber. The insulated enclosure can be coupled to additional insulated enclosures to form an elongated interior area.

Disclosed herein is a roof for an electric furnace. The roof includes: a small-ceiling seating port (120) which has a small-ceiling seating surface (122) and a small-ceiling support surface (124) that extends from the small-ceiling seating surface inwards and downwards; and a large ceiling (130) which has an upper roof panel (132) that radially extends from the small-ceiling seating port at a downward inclination angle, a lower roof panel (134) disposed below the upper roof panel at a position spaced apart from the upper roof panel, and a side roof panel (136) connected to the upper roof panel and the lower roof panel. The upper roof panel is connected to the outer circumferential surface of the small-ceiling seating port, and the lower roof panel is connected to a lower end of the small-ceiling support surface so that the inclination angle of the lower roof panel can be increased.

A modular structure wall of a high-temperature heating furnace including furnace wall main trusses and a furnace roof truss. Connecting I-beams are fixed on the bottom surface of the furnace roof truss, top clamping structures of hoisting outer screws are hooked with the bottoms of the connecting I-beams, the upper surfaces of ceramic fiber cotton modules are uniformly distributed with upwardly convex hoisting outer screws, and the ceramic fiber cotton modules are installed on the lower surface of the furnace roof truss through the hoisting outer screws. A gap is formed between the ceramic fiber cotton modules and the lower surfaces of the connecting I-beams, a ceramic fiber cotton felt is laid in the gap area between the ceramic fiber cotton modules and the lower surfaces of the connecting I-beams, and a furnace wall inner protective lining is fixedly installed on the lower surfaces of the ceramic fiber cotton modules.

Refractory components (e.g. crown or rider arches associated with a refractory structure such as coke ovens, glass furnaces, regenerators and the like) are provided by multiple refractory members bonded to one another by a bonding agent to form an integral self-supporting structure.