Method for controlling the flatness of carbon brick masonry for blast furnace bottom
A control method and flatness technology, applied to blast furnaces, blast furnace details, blast furnace parts, etc., to achieve the effects of reducing labor intensity, improving quality, and reasonable design
Active Publication Date: 2021-10-01
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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Problems solved by technology
[0005] Therefore, there are above-mentioned inconveniences and problems in the known blast furnace bottom full of charcoal brick masonry flatness control mode
Method used
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Embodiment 1
[0034] A 1280m³ blast furnace in a newly-built steel plant has checked and accepted the leveling layer during the carbon brick masonry, and the acceptance standard has reached the flatness error ≤ 1mm, and the maximum relative elevation difference ≤ 3mm. However, after the completion of the first layer of graphite carbon bricks, there are still staggered platforms, and the method of the present invention is used to control the flatness of its masonry.
[0035] The method for controlling the flatness of a blast furnace bottom full-paved carbon brick masonry of the present invention comprises the following steps:
[0036] ①After the first layer of graphite carbon bricks is built, observe the situation of the wrong platform, and perform preliminary grinding on the wrong platform first.
[0037] ② Self-inspection of masonry quality after initial grinding, the self-inspection takes the design standard point on the upper surface of the first layer of carbon bricks reserved on the co...
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Abstract
A method for controlling the flatness of carbon brick masonry at the bottom of a blast furnace, which is characterized in that it includes the following steps: a. Checking the misalignment of graphite carbon bricks; b. Checking the masonry quality after initial grinding; c. Relative elevation data Y of each measuring point X minus Y min , d, according to the acceptance standard, the maximum relative elevation difference ≤ 3mm, e, the grinding area (Y X >Y min +3), f. Check the grinding area with the gauge and feeler gauge in the form of grid arrangement, g. Use the terrazzo grinder to grind the mark "one", check with the gauge and feeler gauge, and avoid constant grinding when grinding. When a position is polished, h. Use a grinder to grind the mark "2" to complete the entire flatness test. The invention has the advantages of reasonable program design for controlling the flatness of carbon brick masonry and strong operability, which improves the quality of blast furnace carbon brick masonry, remarkably improves the passing rate of one-time acceptance, and reduces rework and labor intensity.
Description
technical field [0001] The invention relates to a method for controlling the flatness of brick masonry, in particular to a method for controlling the flatness of brick masonry for the bottom of a blast furnace. Background technique [0002] With the improvement of science and technology, in line with the principle of eliminating backwardness, energy conservation and emission reduction, most domestic steel mills have successively started to build a new generation of blast furnaces to adapt to production. According to our domestic design, the full carbon bricks at the bottom of the furnace are generally It consists of 1 layer of graphite carbon bricks, 2 layers of microporous carbon bricks, and a layer of ultra-microporous graphite carbon bricks. There are 4 layers of carbon blocks at the bottom of the furnace. The carbon blocks between each layer and each column are connected by thin seams. The full pavement of charcoal bricks is all horizontal, and each layer is staggered up...
Claims
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IPC IPC(8): C21B7/00C21B7/06C21B7/24
CPCC21B7/00C21B7/06C21B7/24
Inventor 谭德灯谭春华
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED