玉發集團生產的微鈉莫來石氧化鈉含量小于0.1%，主要晶相為莫來石相。

The YUFA Group produces micro sodium mullite with a sodium oxide content of less than 0.1%, and the primary crystal phase is mullite.

氧化鈉對于莫來石是一種有害雜質，它對莫來石起分解作用，增加非晶質相，弱化高溫性能，阻礙莫來石相的生成，易生成低溫熔融的玻璃相，從而降低莫來石的耐火度，玻璃相生成量隨著鈉含量的增加而增大。

Sodium oxide is a detrimental impurity for mullite as it decomposes mullite, increases amorphous phases, weakens high-temperature performance, hinders mullite formation, and easily creates low-temperature molten glass phases, thereby reducing mullite's refractory degree. The amount of generated glass phase rises with increasing sodium content.

微鈉莫來石因氧化鈉含量降低，其耐火度、體積密度、抗折強度、耐壓強度、真密度、硬度等較普通莫來石均有明顯提升。

Micro sodium mullite, with reduced sodium oxide content, exhibits significantly improved fire resistance, bulk density, flexural strength, compressive strength, true density, and hardness compared to regular mullite.

微鈉莫來石主要用于莫來石承燒板、精密鑄造、高品質耐火材料等領域。我公司可根據客戶需求生產各種規格顆粒、細粉。

It finds applications primarily in mullite bearing plates, precision casting, and high-quality refractory materials. Our company offers various particle and fine powder specifications tailored to customer requirements.