Method for determining positions of working points of electrode of submerged arc furnace

Abstract

The invention discloses a method for determining positions of working points of an electrode of a submerged arc furnace. The method includes selecting a static datum point as a datum point for detecting ascending and descending displacement of the electrode, and measuring the distance L from the datum point to a furnace bottom; determining the total length Lp of the electrode; detecting the displacement H1 of the electrode in an ascending and descending procedure; and enabling a computer to compute the distance Hp from each working point of the electrode to the furnace bottom according to a formula of Hp=L-Lp-H1. The method has the advantages that values of the distances from the working points of the electrode to the furnace bottom can be accurately detected in real time, the working points of the electrode can be accurately controlled to be positioned in the same horizontal plane by an operator, the horizontal plane can be controlled to be positioned optimally by the operator, power balance of arc of the three-phase electrode can be kept, a concentration ratio of a temperature field in the submerged arc furnace and a natural power factor of the submerged arc furnace are increased, the electro-thermal conversion efficiency of the submerged arc furnace is improved, and accordingly purposes of improving the electro-thermal efficiency, reducing smelting power consumption and increasing yield are achieved.

Description

technical field [0001] The invention relates to a method for determining the position of the work point of an electrode of a submerged arc furnace, in particular to a method for determining the distance between the electrode discharge arc end of a submerged arc furnace (resistance arc furnace), that is, the distance between the work point of the electrode and the bottom of the furnace. Background technique [0002] Submerged arc furnaces cover various resistance electric arc furnaces such as calcium carbide furnaces, ferroalloy furnaces, and yellow phosphorus furnaces. The smelted products include calcium carbide, yellow phosphorus, ferrosilicon, ferrochromium, silicon manganese, ferronickel, corundum, ferrotitanium, lead and zinc And other products, the core theory of its smelting is: preheating the charge through the charge current, ionizing the furnace gas to form a directional high-temperature ion flow-arc, converting electrical energy into heat energy, and providing a hi...

AI Technical Summary

Problems solved by technology

So far, no practical method has been found that can accurately measure and determine the position of the work point of the electrode of the submerged arc furnace, so it is impossible to accurately control the position of the work point of the electrode of the submerged arc furnace