Method for pouring off melt from a tiltable metallurgical vessel and installation for carrying out the method

Abstract

A method for pouring melt from a tiltable vessel into a receiving vessel is characterized for obtaining an optimum and automated pouring process by the combination of the following features:—determining the tilt position of the metallurgic vessel, in which the melt to be poured from the metallurgic vessel exits in the form of a poured stream, —determining the position of the poured stream resulting from the determined tilt position of the metallurgic vessel, bringing into position the receiving vessel for receiving the poured stream from the metallurgic vessel according to the determined tilt position, and after the beginning of the pouring—tracking of the receiving vessel according to the poured stream changing with the changing tilt angle of the metallurgic vessel as a function of the progressing pouring process.

1 . A method for pouring off at least one of slag or steel melt from a tiltable metallurgical vessel into a receiving vessel, a ladle or a slag pot, the method comprising
 automatically establishing a tilting position of the metallurgical vessel in which the melt to be poured off leaves the metallurgical vessel through an outlet from the vessel and in the form of a casting stream,   automatically determining the position of the casting stream produced by the established tilting position of the metallurgical vessel,   automatically bringing the receiving vessel into a position for receiving the casting stream produced by the metallurgical vessel in accordance with the established tilting position and, after the pouring off has begun,   automatically adjusting the position of the receiving vessel in accordance with the casting stream as the casting stream changes in dependence on a tilting angle of the metallurgical vessel as the tilting angle changes as the pouring off progresses.   
     
     
         2 . The method as claimed in  claim 1 , further comprising establishing a height of a bath level of the melt in the metallurgical vessel before establishing the tilting position, by measuring the melt bath level. 
     
     
         3 . The method as claimed in  claim 1 , further comprising establishing a height of a bath level in the melt in the metallurgical vessel before establishing the tilting position, by calculation of the bath level on the basis of an internal volume of the metallurgical vessel and weight of the melt. 
     
     
         4 . The method as claimed in  claim 3 , further comprising measuring the internal volume of the metallurgical vessel by a laser scanner before filling of the metallurgical vessel and later filling the vessel with melt to be poured off. 
     
     
         5 . The method as claimed in  claim 2 , wherein the measuring of the bath level in the metallurgical vessel is performed by a melt bath level measuring device, by measuring the angle between a measuring beam and the bath level and the distance of the bath level from the measuring device. 
     
     
         6 . The method as claimed in  claim 1 , wherein during pouring off steel melt from a steelworks converter, ascertaining the bath level of the slag melt, determining the tilting position of the metallurgical vessel for pouring off the steel melt with allowance for the bath level of the slag melt for causing the bath level of the slag melt, for a tilting position of the steelworks converter, to be at a safe distance from a converter mouth of the steelworks converter when the steel melt is tapped. 
     
     
         7 . The method as claimed in  claim 6 , comprising tilting the metallurgical vessel continuously during the pouring off of melt. 
     
     
         8 . The method as claimed in  claim 7 , comprising tilting the metallurgical vessel step by step during the pouring off of melt. 
     
     
         9 . The method as claimed in  claim 6 , further comprising, performing the method in an automated manner with the aid of a computer control. 
     
     
         10 . The method as claimed in  claim 1 , further comprising introducing an additive into the receiving vessel by means of an adding chute, adjusting the adding chute in accordance with the casting stream as the stream changes in dependence on the tilting angle of the metallurgical vessel, and the tilting changes as the pouring off progresses, and/or in accordance with the adjusted receiving vessel. 
     
     
         11 . An installation for pouring off at least one of slag or steel melt, comprising:
 a metallurgical vessel for holding the at least one of slag or steel melt to be poured from the metallurgical vessel;   a first position measuring device operable for measuring the tilting angle of the metallurgical vessel, and an associated control for tilting the metallurgical vessel to a measured extent, including to pour the slag or steel melt,   a receiving vessel, which is movable relative to the metallurgical vessel in a direction of a tilting plane of the metallurgical vessel to be moved to a position to receive the slag or steel melt being poured from the metallurgical vessel; a second position measuring device for measuring the position of the receiving vessel device and an associated control for controlling the travel of the receiving vessel to enable receiving the slag or steel melt being poured as the metallurgical vessel is tilted to various tilt angles wherein the controls cooperate to tilt the metallurgical vessel and move the receiving vessel so that poured slag or steel melt will be received in the receiving vessel;   a measuring device for directly or indirectly, recording a bath level of the melt in the metallurgical vessel and operative on the control of the metallurgical vessel for affecting the tilting angle thereof, and optionally by a device for detecting the end of tapping, the beginning of slag tapping and residual steel and the detecting device is also operative on the control of the metallurgical vessel for affecting the tilting angle thereof.   
     
     
         12 . The installation as claimed in  claim 11 , further comprising an adding chute positioned and operable for adding an additive into the receiving vessel, a third position measuring device operable for measuring the position of the chute and an associated control for positioning the adding chute in dependence on the position of at least one of the casting stream from the metallurgical vessel and/or the position of the receiving vessel. 
     
     
         13 . The installation as claimed in  claim 11 , further comprising a weighing device for the receiving vessel and operative on the control of the metallurgical vessel for affecting the tilting angle thereof.