What effect does the quality of the alumina neutral ramming material have on the life of the induction furnace?

Kualiti bahan tahan api lapisan dan kinerjanya memainkan peranan penting dalam jangka hayat tungku.

(1) Bahan refraktori untuk pembinaan relau mesti mempunyai tahap refraktori yang tinggi, menahan beban haba suhu tinggi, dan tidak melembutkan atau mencairkan. Pada masa yang sama, ia mesti mempunyai kestabilan volum yang tinggi, menahan beban haba suhu tinggi, dan tidak mempunyai pengecutan volum dan hanya pengembangan seragam.

(2) The composition of refractory materials. Impurities in refractory materials can form compounds with low melting points at high temperatures, thereby reducing the refractoriness of refractory materials. Therefore, the content of quartz in the furnace lining sand must be ensured, and the impurity composition must be strictly controlled. The composition of the furnace lining sand is controlled as follows: ω (SiO2) ≥ 98.0%; ω (Al2O3) ≤ 0.5%; ω (Fe2O3) ≤ 0.5%; ω (TiO2) ≤ 0.05%; ω (H2O) ≤ 0.5%.

(3) Granularity ratio of refractory materials. The reasonable particle size ratio of refractory materials can easily form a high-density refractory layer during the furnace building process, and defects are not easy to appear during the use process. The following is a set of reasonable ratios: 3.35mm～5mm, 0.85mm～1.70mm, 0.1mm～0.85mm, and the proportions below 0.1mm are 17%, 33%, 20%, and 30% respectively.