發(fā)布時間：2018-04-28 08:27

  本文選題：粉煤灰 + 燒結(jié)��； 參考：《中國陶瓷》2017年06期

【摘要】：以粉煤灰和粘土作為原料制備可用于水處理填料的超輕粉煤灰陶粒。首先對原料組分進(jìn)行化學(xué)組分分析(XRF)和熱分析(DSC/TGA);其次對原料進(jìn)行配比燒制試驗、單因素實驗,確定了原料配比和工藝流程;再次,由L_9(3~4)正交試驗,得到應(yīng)用于水處理填料的超輕粉煤灰陶粒的最佳工藝流程;最后對燒制的粉煤灰陶粒進(jìn)行礦物組成分析(XRD)和微觀結(jié)構(gòu)分析(SEM),觀察陶粒的微觀結(jié)構(gòu)。結(jié)果表明,以30%粉煤灰∶60%粘土∶2%發(fā)泡劑∶5%秸稈粉為原料配比比例,在600℃下預(yù)熱20 min,1240℃下燒結(jié)30 min的燒結(jié)工藝下所制備的粉煤灰陶粒具有密度接近于水(1.10 g/m L),表面有顯著氣孔,內(nèi)部孔隙發(fā)達(dá),適宜微生物的附著和生長的特性。
[Abstract]:Fly ash and clay were used as raw materials to prepare ultralight fly ash ceramsite which can be used as water treatment filler. First, chemical component analysis (XRF) and thermal analysis (DSC / TGAA) were carried out for raw material components; secondly, raw material ratio and technological process were determined by ratio sintering test, single factor experiment; again, orthogonal test was carried out by L9T 3X). The optimum technological process of ultra-light fly ash ceramsite used in water treatment filler was obtained. Finally, the mineral composition of fired fly ash ceramsite was analyzed by XRD) and microstructure analysis was carried out to observe the microstructure of ceramsite. The results showed that the proportion of 30% fly ash, 60% clay, 2% foaming agent, 5% straw powder, was used as raw material. The fly ash ceramsite prepared by preheating at 600 鈩，

本文編號：1814528