Method for optimizing cooling strength of oxygen tuyere of European smelting furnace

Abstract

The invention discloses a method for optimizing the cooling strength of an oxygen tuyere of an European smelting furnace. The method comprises the following steps that 1, the cooling water quantity of the oxygen tuyere of the European smelting furnace is increased, the flow rate of the cooling water quantity is 7.6024 m / s, the pipe diameter of a water inlet pipe of a tuyere small sleeve is phi 95*6 mm, and the water speed is increased to 14.87 m / s after a front cavity and a rear cavity of the oxygen tuyere small sleeve are intensively cooled by all key water; and 2, pump heads are transformed, the lift of the pump heads is improved, three pump heads are installed on the basis of an original pump through basic expansion of the pump, the flow of each pump head is 550 m<3> / h, two pump heads are opened and one pump head is used for standby use during normal production, and the actual flow can reach 1000 m<3> / h. According to the method, the service life of the tuyere of the European smelting furnace can be prolonged, the production continuity of the European smelting furnace is stabilized, and the operation rate of the European smelting furnace is improved.

Description

technical field [0001] The invention relates to a method for optimizing the cooling strength of an oxygen tuyere of an Ouye furnace. Background technique [0002] The predecessor of Ouye Furnace is COREX Furnace. As the most advanced COREX in the world, after being relocated from Baosteel Luojing to Bayi Iron and Steel Co., Ltd., after a series of technological transformations, it has its own technological characteristics, so the COREX Furnace was renamed Ouyeel Furnace. The damage of the tuyere has become the main production factor that restricts production and affects the operating rate in Baosteel COREX-3000 and Bayi Iron and Steel Ouye furnace. Since COREX-3000 was put into production in Baosteel Luojing, that is, in December 2007, the oxygen tuyere was damaged shortly after it was put into production, and 6 tuyeres were damaged. In April, August, October, November of 2008 and March of 2009, a large number of outlets were damaged in a short period of time, and the highe...

AI Technical Summary

Problems solved by technology

After the coal injection operation was put into operation in April 2009, the damage to the tuyeres intensified

A large number of tuyeres and frequent breakage not only seriously affect the production stability (operating rate), but also lead to increased unplanned shutdown time and low melting rate, and greatly increase fuel consumption, nitrogen consumption, maintenance costs and production spare parts consumption, which greatly increases the production cost of Ouyeel furnace. caused great pressure