Measurement of Blast Furnace Refractory Lining Thickness with a 3D Laser Scanning Device and Image Registration Method

Abstract

This paper presents a method for blast furnace lining thickness measurement with a 3D laser scanner and image registration method. A laser scanner is used to measure the inner profile through an opening on the upper part of the furnace. Two data point sets are obtained before and after the lining repairing process respectively, and data registration algorithm is employed to acquire rigid body transformation so as to compare the difference between both point clouds based on the same coordinate system. The difference represents thickness added to the initial lining. Furthermore, by comparing mechanical dimensions with the measured profile, residual lining thickness can be obtained.

Novel method for real-time burden profile measurement at blast furnace

“…Taking advantage of recent achievements in opto-electronics and semiconductor devices, surface profiling, using 3D laser technology, has become available with elevated speed and lower price. Such distinguishing features enable surface profile measurement at very high resolution and accuracy within a couple of minutes [1,10]. However, due to the nature of the laser light, the device can only be applied at scheduled shutdowns during which time the dust intensity inside the BF is much reduced [10].…”

“…Blast furnace (BF)-based iron manufacturing processes generate more than 70% of carbon emissions, and BFs are mainly responsible for the greenhouse gas emissions caused by steel production [1]. As a consequence, the BF condition and material layer distribution are key factors in conserving the discovery power of information and reducing pollution.…”

3-Dimension Imaging System of Burden Surface with 6-radars Array in a Blast Furnace

“…Weakness of MD method is discontinuity. Laser scanner system 6,7) has high data acquisition rate and large measurement range. Laser also has high resolution and accurate positioning.…”