The high temperature performance of the lining mainly depends on the physical and chemical properties and mineral composition of the refractory materials used. Under the premise of the selection of raw and auxiliary materials, the sintering process is the key process to make the lining obtain a good microstructure and give full play to its high temperature resistance. The densification degree of lining sintering is related to the chemical composition of refractory, particle size ratio, sintering process and sintering temperature. Lining material manufacturers from the impact of several factors on the temperature resistance of intermediate frequency furnace lining to give you a detailed explanation of how to improve the temperature resistance of intermediate frequency furnace lining.

1. Remove mica paper when building the furnace.

2. The crystal quartz sand for furnace building is treated as follows:

3, hand selection: the main removal of blocks and other impurities;

4, magnetic separation: must completely remove magnetic impurities;

5, dry ramming materials: must be slow drying treatment, drying temperature of 200℃-300℃, heat preservation for more than 4 hours.

1. Adding lining material: First of all, Xiaobian believes that the lining material should be knotted in advance, and iron baking should be added after completing the preparation work. Request a breadiron. Fill the furnace. Do not add oil-based iron pins, iron beans, mechanical iron. Because the first furnace lining is not sintered. Oily materials will emit a lot of smoke and ammonia when heated at high temperatures. After high pressure, a lot of smoke and ammonia gas will be pressed into the lining material, and the lining material will be discharged to the outside of the furnace body. There will be a lot of flue gas residue left in the lining material after a long time, which makes the lining material black. The binder in the lining material loses its bonding efficiency and the lining becomes loose. Present the scene through the furnace. If there is oily material in the plant, it can be used in the future after the furnace lining is completely sintered. (10 furnace for future use).

2. Starting panel: From current 0. 2 Keep warm for 20 minutes. 0. 3 Keep warm for 20 minutes. 0. 4 Keep warm for 20 minutes. 0. 5 Keep warm for 20 minutes. 0. 6 Heat for 40 minutes. From now on, it will melt normally. Fill the furnace with molten iron. The temperature rises to 1500 degrees -- 1650 degrees. Keep warm for 60 minutes. End of baking.

3. Secondly, about the start of the cold furnace, what problems should we pay attention to in this process? Let's start with 0. 2 Start for 10 minutes. 0. 3 Stay for 10 minutes. 0. 4 Stay for 5 minutes. 0. 5 Stay for 5 minutes. 0. 6 Stay for 5 minutes. Then work normally.

4. Hot furnace shutdown precautions: hot furnace shutdown. In the final furnace, the furnace temperature should be raised and the glaze around the furnace mouth should be cleaned. The hot metal must be poured out of the furnace. Investigate furnace wall condition. The black part in the furnace body indicates that the furnace lining has become thin. Pay attention to this part the next time the furnace is turned on. Cover the grate with an iron plate. Making the lining gradually shorten.