How to Correctly Repair Intermediate Frequency Furnace Lining

How to repair the lining of the intermediate frequency furnace?

Luoyang Quantong Kiln Industry Co., Ltd. will answer for you:

1. For the correction of cracking or killing at the joint between the tap hole refractory material and the furnace wall, it can be corrected by pushing and hitting the unshaped refractory material. When the correction limit is small, it should be soaked with firewood, etc.;

2. Correction of side wall cracking of box-type electric furnace, generally, cracks below 1 mm can be used without correction; above 1 mm, similar degree-oriented cracks need to be corrected. Boric acid can be added and mixed with average. After passing through the sieve, the high-value furnace-building refractories are vacant with iron wire and other things. And the surface after the vacancy is smoothed with sand mixed with water glass in the wet state.

3. Correction of the side wall of the box-type electric furnace to kill or limit rust. After cleaning the slag and iron residue, apply water glass. Then use the refractory mixed with 5%-6% water glass to hit the correction, or use A1,0 Unshaped refractory material correction. When the rust limit is slightly larger, it is put into the mold for correction.

4. The correction of the burning damage or damage of the curved part of the bottom and side walls, the correction of the bottom of the electric furnace can be tamped with the box-type electric furnace refractory that participates in the same amount of boric acid as the newly built furnace and is mixed with the average value. For correction, it is necessary to install a mold whose outer diameter is 5060 mm smaller than the furnace diameter, and whose height is about 100 mm higher than that of the killing part. Use a vibrator to tamper, and the thickness of each layer is 2030 mm. The upper layer is 10 mm higher than the model, and then the upper plane is modified to a certain slope.