Abstract: The invention relates to a gas purging device for installation in a metallurgical vessel, said device having the following features in a position installed in the bottom of the metallurgical vessel: a lower, largely gas-tight base part, a gas line runs in the base part from a first end in the region of a first outer face of the base part to a second end in the region of a second outer face of the base part, the second end of the gas line is formed as a first portion of a coupling, a second portion of a coupling is located in the region of an outer connection face of a functional part, by means of which the functional part rests against the base part, a gas distribution device runs in the functional part from the second portion of the coupling, through the functional part, to at least one free surface of the functional part formed as a gas outlet face, the base part and functional part are each made of a refractory ceramic material.

Abstract: The invention pertains to a nozzle for spraying and inorganic mass with the following characteristics: a flow channel (10) that extends from a first end (12) with an essentially circular cross section to a second end (14) with an essentially slot-like cross section. The respective minimum cross section of the flow channel (10) changes from a circular to a reniform and ultimately to a slot-like cross section between the first end (12) and the second end (14), and the flow channel extends between the first end (12) and the second end (14) in such a way that an axis (x) extending perpendicular to the circular cross section on the first end (12) and through its center of area is spaced apart from the center of area of at least 50% of the reniform cross sections of the flow channel (10).

Abstract: The invention relates to a wear indicator (display) in a compound system made of fireproof (refractory) ceramic bricks.

Abstract: Gas purging element (10) for metallurgical applications, comprising the following features in its mounted state: a ceramic refractory body (10, 30) with a lower end and an upper end, the upper end features an upper front surface, the lower end features a lower front surface (12), a depression (20) extends from the lower front surface (12) into the lower end of the ceramic refractory body (10), the depression (20) comprises a first part (16, 16?, 16?) of a detachable, form-fit connection to a gas connection element (50), a fluidic connection for a treating gas through at least one gas permeable section (30) of the ceramic refractory body (10) is provided between the depression (20) and the upper front surface.

Abstract: The invention relates to a gas purging element at a metallurgical vessel as well as a corresponding gas supply pipe.

Abstract: The invention relates to a gas purging element at a metallurgical vessel as well as a corresponding gas supply pipe.

Abstract: Gas purging element (10) for metallurgical applications, comprising the following features in its mounted state: a ceramic refractory body (10, 30) with a lower end and an upper end, the upper end features an upper front surface, the lower end features a lower front surface (12), a depression (20) extends from the lower front surface (12) into the lower end of the ceramic refractory body (10), the depression (20) comprises a first part (16, 16?, 16?) of a detachable, form-fit connection to a gas connection element (50), a fluidic connection for a treating gas through at least one gas permeable section (30) of the ceramic refractory body (10) is provided between the depression (20) and the upper front surface.

Abstract: The invention relates to a wear indicator (display) in a compound system made of fireproof (refractory) ceramic bricks.

Abstract: The invention relates to a gas purging element at a metallurgical vessel as well as a corresponding gas supply pipe.

Abstract: A container for molten metal has at least one opening in which a refractory nozzle brick is mounted. A refractory purge plug or a refractory sleeve defining an outlet opening is inserted in the nozzle brick opening. A defined gap is formed between the nozzle brick opening and the purge plug or the sleeve and is filled with a refractory mass, this mass consisting of a material which can be easily bored or milled out of the mass for the purpose of replacing the purge plug or the sleeve. In this manner, laborious cleaning steps can be avoided and the nozzle brick no longer risks being damaged.

Abstract: A container for molten metal has at least one opening (4; 24) in which a refractory nozzle brick (5; 5?; 25; 25?) is mounted. A refractory purge plug (10; 10?) or a refractory sleeve (30; 30?) defining an outlet opening (31; 31?) is inserted in the nozzle brick opening (6; 6?; 26; 26?). A defined gap is formed between the nozzle brick opening (6; 6?; 26; 26?) and the purge plug (10; 10?) or the sleeve (30; 30?) and is filled with a refractory mass, said mass consisting of a material which can be easily bored or milled out of the mass for the purpose of replacing the purge plug (10; 10?) or the sleeve (30; 30?).

Abstract: The present invention relates to a tapping pipe for a metallurgical melting vessel, such as a converter or an arc furnace.

Abstract: The present invention relates to a tapping pipe for a metallurgical melting vessel, such as a converter or an arc furnace.