A process for producing graphite in a vertical graphitization furnace having at least one process chamber that bounds a heating zone, a temperature of 2200 C. to 3200 C. is generated in the heating zone, particulate graphitizable material is supplied to the process chamber through an inlet, graphitizable material is conveyed through the heating zone of the process chamber, in which it is graphitized to graphite, and graphite obtained is removed from the process chamber through an outlet. In some variants, graphitizable material wherein the particles have a particle size of less than 3 mm is used, and/or, a material column is formed throughout the heating zone of a particular process chamber, wherein graphitizable material, after being supplied through the inlet from the top, trickles through an intake zone of the process chamber onto the material column, and/or, a material column is formed in a stationary heating zone of a particular process chamber encompassed by the heating zone, wherein graphitizable material, after being supplied through the intake from the top, trickles through a drop heating zone likewise encompassed by the heating zone onto the material column, and/or, graphitizable material in one or more material vessels is conveyed through a particular process chamber and through the heating zone thereof. Also specified is a vertical graphitization furnace optimized.

One object of the present invention is to provide a burner for producing inorganic spheroidized particles which can efficiently melt and spheroidize even organic powder with a large particle size distribution. The present invention provides a burner for producing inorganic spheroidized particles, including; a raw material powder supply path configured to supply inorganic powder as raw material powder; a first fuel gas supply path (3A) configured to supply a first fuel gas; and a first combustion-supporting gas supply path (4A) configured to supply a first combustion-supporting gas; wherein the raw material powder supply path includes: a first supply path (2A) configured to extend in an axial direction of the burner (1); a first collision wall (2D) configured to be located at the top of the first supply path (2A); a plurality of second supply paths (2B) configured to be branched from the top of the first supply path (2A), and extend radially from the center of the burner (1); one or more dispersion chambers (2C) configured to be located at the top of the second supply path (2B), and have a space in which the cross-sectional area is larger than the cross-sectional area in the second supply path (2B); and one or more raw material ejection holes (2a) configured to communicate with the dispersion chamber (2C).

A method of heating up a furnace bottom and a burner lance used in the method are proposed. The method of heating up the furnace bottom includes a step of opening, in the tap hole, a burner lance insertion hole having a diameter larger than a diameter of the burner lance so as to penetrate into the furnace, a step of installing the burner lance in the opened burner lance insertion hole, a step of filling a gap between the installed burner lance and a furnace exterior side of the tap hole with a refractory, and a step of blowing in gas for heating into the furnace from the burner lance to heat up the furnace bottom.

A method of heating up a furnace bottom and a burner lance used in the method are proposed. The method of heating up the furnace bottom includes a step of opening, in the tap hole, a burner lance insertion hole having a diameter larger than a diameter of the burner lance so as to penetrate into the furnace, a step of installing the burner lance in the opened burner lance insertion hole, a step of filling a gap between the installed burner lance and a furnace exterior side of the tap hole with a refractory, and a step of blowing in gas for heating into the furnace from the burner lance to heat up the furnace bottom.

The present invention relates to a device for heat-treating solid material, in particular in granular form, wherein the device comprises a kiln and an external heat generator, wherein said kiln comprises at least one sloped sliding surface on which a bed of said solid material slides down within said kiln due to gravity while a hot gas generated by the external heat generator is led through said solid material to heat said solid material to a desired temperature in order to change the substance properties of said solid material. According to the invention, said external heat generator for generating said hot gas is external to said kiln, wherein said kiln further comprises at least one kiln gas inlet through which said hot gas enters said kiln, such that the necessary temperature of said hot gas can be controlled precisely in that said hot gas is generated in said external heat generator, ensuring that the solid material does not experience temperatures above an allowed maximum temperature, and further such that the solid material is not exposed to radiation from a burner.

A carbon baking furnace has at least one vertical baking shaft with a system and method for positioning green carbon bodies to be baked at the top of the vertical baking path and ringing the green carbon bodies with a sacrificial medium such as packing coke. The disclosure provides a system and method for controlling the delivery and removal of the sacrificial medium used to surround the carbon bodies within the baking paths. A volatile extraction system and method are provided. A system and method for unloading baked carbon bodies is disclosed.

One object of the present invention is to provide an apparatus for producing inorganic spheroidized particles which can significantly reduce the amount of warming gas generated and suppress the generation of soot during combustion. The present invention provides an apparatus (10) for producing inorganic spheroidized particles, including a burner (11) for producing inorganic spheroidized particles, a vertical spheroidizing furnace (15), an ammonia supply source (12), an oxygen supply source (13), an ammonia supply line (L1) located between the ammonia supply source (12) and the burner (11) for producing inorganic spheroidized particles, and an oxygen supply line (L2) located between the oxygen supply source (13) and the burner (11) for producing inorganic spheroidized particles.