The last article mentioned two aspects of the actual research of KR desulfurization process and the damage mechanism analysis of the working layer of iron water tank, and then discussed several other aspects of the improvement of the working layer firebrick material：
(2) Improvement of fire -resistant mud materials.
During the KR desulfurization process, due to the rotation effect of the mixer, the brick seam mud in the inside of the iron water tank lined with the washed out of the iron water was gradually falling off, and because the manufacturer's tank tank was poorly adhesive, it could not guarantee that the brick and the brick could not guarantee the brick and the brick. The integrity and strictness of the binding causes corrosion from the refractory mud during the desulfurization process. In view of this situation, the refractory mud material is improved and the following standards are reached:
① It has good liquidity and plasticity, which is convenient for construction. After hardening, it should have necessary adhesion to ensure the overall knot between bricks and bricks, so that it has the effect of resisting external forces and slag to resist;
② Have the same or equivalent chemical composition as resistant to refractory brick materials, so as to avoid harmful chemical reactions in different materials in different materials, and avoid falling off from the refractory mud;
③ It should have armal expansion that is similar to the refractory brick to avoid being separated from each other;
④ The volume should be stable to ensure the integrity and strictness between refractory mud and refractory bricks.
(3) Improve the molding quality of the fire resistance bricks of the working layer.
The surface quality of the refractory brick is directly related to the overall masonry quality of the iron tank. The shape and accuracy of the shape and size of the refractory brick are mainly controlled by refractory raw materials, processing equipment and process systems. Usually, the size of the fire -resistant brick is tolerance, whether there are distortions, deformed, and missing corners as important items in their quality standards. Therefore, the overallness of the fire -resistant bricks used by manufacturers must meet the requirements of the use of refractory bricks. Each brick angle is complete, and surface defects such as residue, cracks, caves, etc.
(4) The overall pouring technology is adopted by the permanent layer.
The original permanent layer of the KR desulfurization iron tank is made of clay brick masonry. The overallness of this masonry method is poor. The mud of brick sewing is prone to falling off under the action of stress. It is easy to cause leakage accidents.
Because the pouring materials have high combination strength and good overallness and material uniformity, it has good thermal resistance, and can improve the heat resistance impact of the lining body. The contraction and expansion caused by changes in volume changes can further improve the combination of lining and iron water tank metal shells.
According to the above analysis, at the same time, through the analysis of the damage of 140T iron water tanks through the KR desulfurization, combined with the actual working conditions of desulfurization iron tanks, the permanent layer of KR desulfurization iron water tank is used as a whole. In this way, the overall and material uniformity of 140 tons of iron cans can be greatly improved.
