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粉煤灰是一种高分散度的固体颗粒集中体,其中各种形态的颗粒混杂在一起,综合利用困难。如能分离出超细分级的微粒,可大大改善粉煤灰的性能,应用范围也会随之提高。 粉煤灰是由多种粒子组成的,其中球形颗粒占60％以上,另外还有空心微珠、不规则和多孔玻璃体以及磁珠漂珠等。这些粒子分离后粒度可控制在0.1～40μm范围。分离后的微细粒所含的球形颗粒明显富集、碳铁含量下降,三氧化二铝含量增高,有较大的比表面积,具有多孔性的玻璃相结晶构造。这些性能使粉煤灰具有特殊的用途。
Fly ash is a high concentration of solid particles concentrated body, in which various forms of particles mixed together, the comprehensive utilization of difficulties. If you can separate the ultra-fine graded particles can greatly improve the performance of fly ash, the scope of application will be increased. Fly ash is composed of a variety of particles, of which spherical particles accounted for more than 60%, in addition to hollow beads, irregular and porous glass beads and bead floating. Particle size separation of these particles can be controlled in the range of 0.1 ~ 40μm. The spherical particles contained in the separated fine particles are obviously enriched, the content of carbon and iron decreases, the content of aluminum oxide increases, and the larger the specific surface area and the porous glass phase crystal structure are. These properties make fly ash has a special purpose.