(1) construction size error is large, such as section size and shape, position size (including horizontal and vertical direction), etc., which is equivalent to a certain degree of change in the design, so it can not reach.The purpose of the design requirement is to make things that are computationally accurate inaccurate, which of course makes operational control difficult.
(2) the ash joint is too large, masonry is not dense.As a result, the poor air tightness of the kiln body leads to air leakage and fire leakage, which makes the kiln body easy to be damaged, deformed and displaced, and makes the geometric size of the kiln body greatly wrong, which will certainly affect the firing process and even lead to serious accidents.
For example, if the size error of kiln car masonry is large, the bending seal between cars is not strict; if the size error of kiln body is large, the bending seal between cars and kiln body is not strict, which will cause air leakage, affect the firing process and thermal efficiency, and even cause truck accidents.
Therefore, in order to ensure the realization of the design intention of advanced kiln, control the pressure, temperature and atmosphere system flexibly and accurately during the firing operation, and improve the thermal efficiency, it is necessary to do well in the construction quality, especially pay attention to the above two main aspects.
With the development of ceramic industry and the increase of furnace construction and repair quantity, higher requirements are put forward for the technology and effect of kiln construction, which promotes the improvement and improvement of construction technology.Of course, the development of construction technology depends on kiln design, refractory materials and construction equipment progress.
1. From the perspective of the recent preliminary stage: appropriately make the bricks larger, which can reduce the ash joint, increase the overall strength and improve the pouring efficiency;Gradually increase the application of bulk refractory materials (such as refractory concrete), which can realize mechanization instead of manual, speed up the construction progress, with the progress of bulk refractory production technology, quality improvement, expand its range of use;According to the actual situation, the construction methods and engineering properties of other departments should be popularized, such as conveyer belt for transporting materials, fire mud transported by pump, diamond cutting machine for cutting bricks, etc., so as to reduce labor intensity and improve work efficiency.
2. From the perspective of the long-term advanced stage: with the development of refractory materials and advanced heat insulation materials, kiln masonry is also like the replacement of the old qin bricks and han tiles in the construction industry by prefabricated parts produced in batches by factories;As the construction of skyscrapers achieves the rapid construction like building blocks, kiln (especially tunnel kiln) masonry is changed to prefabricated construction method, which makes kiln masonry realize the mechanization and productization, thus greatly reducing cost and improving quality.Therefore, the kiln body should be standardized and serialized step by step.
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