A roller for a roller furnace with a roller base body and a coating on the surface, wherein the coating has a first layer, containing: 10.0-30.0 wt.-% Si, 10.0-30.0 wt.-% Al(OH).sub.3, 1.0-3.0 wt.-% B.sub.4C, 0.5-1.5 wt.-% Y.sub.2O.sub.3, 0.1-1.0 wt.-% Fe.sub.2O.sub.3 and the remainder Al.sub.2O.sub.3 and a second layer, containing 10.0-30.0 wt.-% Si, 10.0-30.0 wt.-% Al(OH).sub.3, 1.0-3.0 wt.-% B.sub.4C, 2.0-4.0 wt.-% Y.sub.2O.sub.3 and the remainder Al.sub.2O.sub.3.

An energy-saving low-carbon combustion system for a ceramic roller kiln comprises a kiln body, a roller conveyor belt, a circulating fan and a heat exchanger; a kiln chamber in the kiln body is divided into a low-temperature section, a medium-temperature section and a high-temperature section; a flue gas exhaust outlet of the low-temperature section is provided with the heat exchanger, an air pipe is connected with an air inlet of the heat exchanger, an air outlet of the heat exchanger is connected with a hot air pipe, and the hot air pipe is connected with burners in the medium-temperature section and the high-temperature section; the medium-temperature section is provided with a heat introduction outlet connected with the circulating fan that is connected with the kiln chamber in the low-temperature section; the roller conveyor belt penetrates through the kiln body; and the medium-temperature section is provided with a ceramic honeycomb body.

A guiding unit for slabs comprising at least two rolls (10, 10) connected to each other and adapted to rotate along a same axis X; wherein each roll comprises a first tubular element (12) and a second tubular element (5), which is external and coaxial to axis X and to the first tubular element and removable from said first tubular element; wherein cooling channels (3, 30) are provided in each roll between said first tubular element and said second tubular element for the passage of a coolant liquid; wherein each roll comprises a respective hub at its two ends; and wherein each hub is provided with cavities communicating with the cooling channels of the respective roll so as to define a path for the coolant liquid from a first end to a second end of the guiding unit crossing said at least two rolls.

Provided is a production apparatus for a cathode active material for lithium ion secondary batteries which can improve productivity. The production apparatus is provided with: a conveying device that conveys a raw material of a cathode active material, the raw material containing a metallic compound and a lithium compound, the metallic compound including at least one metallic element selected from the group consisting of nickel, cobalt, and manganese; and a heating unit in which the raw material is heated, wherein the heating unit has at least one heating member that heats the raw material by heat conduction, the conveying device has a conveying member that conveys the raw material, the heating member heats the raw material via the conveying member, and the conveying member has a retaining part for the raw material of the cathode active material along a side part thereof in a width direction.

A heat treatment furnace may include: a furnace body comprising an entrance, an exit, and a heat treatment space having a temperature-rising space and a temperature-maintained space that are configured to thermally treat a plurality of objects; conveying plates on which the plurality of objects is to be placed; a pusher configured to push the conveying plates in a front direction from the entrance to the exit of the furnace body; and a plurality of heaters extending in an up-down direction and aligned in the front direction in the heat treatment space. Each of the plurality of heaters may include a heating part configured to generate heat. Positions of the heating parts of the plurality of heaters in the up-down direction may vary from the heater closest to the entrance toward the heater closest to the exit.

Provided is a production apparatus for a cathode active material for lithium ion secondary batteries which can improve productivity. The production apparatus is provided with: a conveying device that conveys a raw material of a cathode active material, the raw material containing a metallic compound and a lithium compound, the metallic compound including at least one metallic element selected from the group consisting of nickel, cobalt, and manganese; and a heating unit in which the raw material is heated, wherein the heating unit has at least one heating member that heats the raw material by heat conduction, the conveying device has a conveying member that conveys the raw material, the heating member heats the raw material via the conveying member, and the conveying member has a retaining part for the raw material of the cathode active material along a side part thereof in a width direction.

Sleeve for mounting a ceramic roller in a roller hearth furnace, the sleeve has a receptacle for one end of the ceramic roller, the receptacle being surrounded by a lateral wall. The lateral wall has, in the axial direction, a waist portion and a clamping portion, wherein a wall thickness (d) of the lateral wall in the waist portion is smaller than in the vicinity of the waist portion, and a cross-sectional area of the receptacle in the clamping portion is smaller than in the vicinity of the clamping portion. A ceramic roller can be mounted in a roller hearth furnace by the sleeve, even at high temperature. During production, the sleeve is provided with a reduced cross-sectional area in the clamping portion. When the sleeve is pressed axially onto the end of a ceramic roller, the reduced cross-sectional area produces an elastic force, with the sleeve being held on the ceramic roller.

A slab library for separate storage of cold blanks and hot blanks of heavy plates and heating furnace layout, and a furnace loading method are provided. The slab library and heating furnace layout comprises: 1 # slab library and 2 # slab library span, arranged side by side; continuous casting blank delivery roller way connected to the continuous casting process; heating furnace span arranged at the outlet of the 2 # slab library span; slab preparatory library span, which is across the inlets of the 1 # slab library span and the 2 # slab library span; span-crossing traverse trolley roller way and the heating furnace span; span-crossing Horary-spa roller way and the 1 # slab library span; and, feeding roller way and the heating furnace span, and across the hot blank zone and the cold blank zone of the 2 # slab library span and the two ends of the heating furnace span.

A device and a method are described by which the process control, in particular temperature control, of a metal product passed through along a single running-through line is flexibly influenced by means of at least two adjacent segments. By exchanging segments, the process control can be adapted quickly and flexibly to a wide variety of metal products.

In one embodiment, a case transfer apparatus includes a base, a feeding device having a first end tapering to a second end that is coupled to the base, a motor disposed on the base, a rotatable feed wheel assembly disposed on the base and coupled to the motor, the rotatable feed wheel assembly adapted to receive at least one case via gravitational force from a feeding device, and a roller plate coupled to the motor and disposed adjacent the rotatable feed wheel assembly within a case receiving region where the at least one case is rotated and heated.