Detection method for material pipe blockage in silo of closed submerged arc furnace

Abstract

The invention discloses a cabin and tube plugging detection method of an airtight submerged arc furnace. A set of force sensor is installed on the supporting portion of the lower portion of each cabin of the airtight submerged arc furnace to measure the real-time total weight of the cabin in real time, then the material weight variable quantity within unit time and the furnace charge amount consumed by unit quantity of electricity within the unit time are calculated, and finally the furnace charge amount consumed by unit quantity of electricity within the unit time is compared with a set severe plugging alarming value and a slight plugging alarming value for judgment, so that whether the phenomenon of material plugging exists on a material outlet tube can be distinguished. Simultaneously, alarming and corresponding treatment can be carried out according to the distinguishing results, accurate solutions can be adopted conveniently in time, major explosion accidents caused by furnace gas leakage due to material tube blocking can be avoided, and safe and reliable operation of the airtight submerged arc furnace can be ensured.

Description

technical field [0001] The invention relates to a method for detecting material blockage in a feed bin of a closed submerged arc furnace. Background technique [0002] The airtight submerged arc furnace covers various resistance electric arc furnaces such as calcium carbide furnace, ferroalloy furnace, yellow phosphorus furnace, etc. The smelted products include calcium carbide, yellow phosphorus, ferrochrome, silicon manganese, ferronickel, corundum, ferrotitanium, lead and zinc, etc. , Its core theory of 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 sufficiently high temperature field for the reduction reaction. [0003] The closed submerged arc furnace is equipped with an automatic feeding device. The main components include the distributor around the electrode, the upper part of the distributor connected to the mate...

AI Technical Summary

Problems solved by technology

The existing closed submerged arc furnace adopts the installation of a material level meter on the silo to detect the amount of material in the silo, so as to avoid the accident of furnace gas leakage caused by the lack of material in the silo

This method can only detect the material level in the silo, and determine the feeding time and amount according to the level of the material. However, it cannot detect whether there is a local blockage in the material pipe.

When the material pipe is blocked, the sealing performance of the material pipe and the silo will be reduced, and the problem of furnace gas leakage from the chemical material pipe silo will still occur