01 The main advantages of zirconium-containing modules for high temperature metallurgical furnaces
(1) Light weight, ceramic fiber module is a lightweight refractory material in refractory materials, and its density is only 1/5 of that of castables. It is of great significance for relieving the pressure of the furnace body and prolonging the life of the furnace body.
(2) Good elasticity, the ceramic fiber module adopts the pre-compression mode. After the module is installed, the packing tape is removed, and the insulation layer will squeeze each other in different directions into a solid and seamless whole.
(3) Low thermal conductivity and low thermal conductivity are the basic properties of ceramic fiber materials. Its ability to resist thermal shock makes the furnace wall a near insulator, reducing heat loss as much as possible and reducing fuel consumption.
(4) There are various anchoring forms, and the various forms on the back of the folding module provide more possibilities for the application of various furnace conditions.
(5) Low investment, the ceramic fiber module lining can be put into use after installation, eliminating the need for a long oven and maintenance process.
02 Construction plan of zirconium-containing module for high temperature metallurgical furnace
(1) For the backing layer of the zirconium-containing ceramic fiber module cotton block composite furnace lining for high-temperature metallurgical furnaces, during the construction process, it should be uniformly pressed to the required compactness and thickness according to the design requirements. When there are two layers, the joints of the backing material between the layers should be staggered, and the staggered distance should not be less than 100mm;
(2) The anchor should be determined by the module structure and its size. During the welding process of the anchor nail, the verticality deviation is required to be less than 3mm, and the size deviation generated during the welding process should be reflected in the modules in the latter row;
(3) For zirconium-containing ceramic fiber modules for high-temperature metallurgical furnaces, if the connection between cotton blocks and brick masonry or other refractory linings is in the non-folding direction of the folded module, it must be considered that the straight-through seam will be caused by the shrinkage of the refractory products. For expansion, the ceramic fiber blanket should be folded and squeezed into the straight seam to prevent the increase of heat loss and the damage of the steel structure;
(4) For the ceramic fiber composite furnace lining, for the columnar arrangement, the fiber shrinkage seams between different rows must be folded and compressed with the corresponding fiber blanket to compensate for the shrinkage. When this structure is used for the furnace roof, it must be fixed with heat-resistant alloy "U-shaped nails".
