Optimization Study of Annular Wear-Resistant Layer Structure for Blast Furnace Tuyere

Abstract

A new tuyere small sleeve coating structure that balances the high thermal conductivity of the copper substrate with the high wear resistance of the protective layer was developed in this paper. This structure can achieve a low-carbon blast furnace by reducing the heat loss from the tuyere. The 3D model was established via Solidworks for modeling and Ansys for numerical simulation, the temperature field of the annular wear-resistant layer structure tuyere small sleeve with different widths of the wear-resistant layer was analyzed and compared with the temperature and stress field of traditional tuyere small sleeve. The results show that the design of the annular wear-resistant layer structure of the tuyere small sleeve is more effective. The new annular wear-resistant layer structure for the tuyere small sleeve results in a decrease of 24 K in the average temperature of the wear-resistant coating. The comparison of this structure with tuyere sleeves without wear-resistant coatings shows a 16.7% reduction in heat loss, improves the wear resistance of the tuyere, providing new technological ideas for low-carbon blast furnace production. Compared with the tuyere sleeve completely covered with a wear-resistant coating, the maximum thermal stress of this structure decreased from 624.98 Mpa to 427.99 Mpa, resulting in a reduction of 31.5%, which is beneficial for the service life of the tuyere sleeve. The copper surface temperature of the new tuyere small sleeve is in a safe range when the temperature is below 2273 K.

Study of Tuyere Combustion Flame Temperature in Vanadium and Titanium Blast Furnaces by Machine Vision and Colorimetric Thermometry

“…In recent years, a large number of scholars have studied the tuyere combustion flame temperature of blast furnaces [9], which could be summarized into three stages. In the early stage, Taylor used a fiber-optic ratio pyrometer to collect radiation light from a tuyere peephole in the blast furnace at the Redcar Blast Furnace of British Steel [10], which was motivated by the online detection of burner temperature in coal-fired power boilers [11].…”

Recent Progress on Anti-Slip and Highly Wear-Resistant Elastic Coatings: An Overview

“…They are also used in pedestrian walkways, sports venues, parking lots, bathrooms, swimming pools, and other areas where anti-skid properties are required [9,10]. Additionally, wear-resistant and anti-slip paper is used between product packages [11][12][13][14].…”