發(fā)布時間：2018-05-05 21:59

  本文選題：熾熱鎂渣 + 激冷水合��； 參考：《環(huán)境工程學(xué)報》2016年12期

【摘要】：為了達(dá)到以廢治廢的目的,對鎂冶煉產(chǎn)生的廢棄物-鎂還原渣通過激冷水合方式制備脫硫劑進行研究。采用XRD獲得不同激冷條件下樣品的物質(zhì)組成,通過SEM研究熾熱鎂渣激冷樣品的表觀形貌。通過實驗室激冷水合實驗研究不同水合參數(shù)對水合反應(yīng)以及脫硫性能的影響。對比現(xiàn)場熾熱鎂渣激冷水合與實驗室激冷水合活化方式下水合樣品的脫硫性能。結(jié)果表明:鎂渣激冷后的主要成分為β-C2S,且表面變得粗糙多孔;脫硫鈣轉(zhuǎn)化率與水合反應(yīng)程度間存在拋物線關(guān)系;當(dāng)激冷溫度為950℃,水合溫度為50℃,實驗室熾熱鎂渣激冷水合反應(yīng)所制備的脫硫劑在水合時間為6 h時,鈣轉(zhuǎn)化率最高,為14.1%,而水合時間為8 h時,水合反應(yīng)程度最大,為0.16 g·g~(-1);與實驗室熾熱鎂渣激冷水合樣品和自然冷卻水合樣品相比,現(xiàn)場熾熱鎂渣激冷水合樣品的鈣轉(zhuǎn)化率最高,達(dá)30.33%。
[Abstract]:In order to achieve the purpose of treating waste by waste, the desulphurizing agent was prepared from magnesium reductive slag, which was produced by magnesium smelting. XRD was used to obtain the material composition of the samples under different cooling conditions, and the apparent morphology of the heated magnesium slag samples was studied by SEM. The effects of different hydration parameters on the hydration reaction and desulfurization performance were studied by laboratory chilled hydration experiments. The desulphurization performance of hot magnesium slag in the field was compared with that in the laboratory. The results show that the main composition of magnesium slag is 尾 -C2Sand the surface becomes rough and porous, the conversion of desulphurization calcium has a parabola relation with the degree of hydration reaction, and the hydration temperature is 50 鈩，

本文編號：1849466