發(fā)布時間：2018-02-25 23:23

  本文關(guān)鍵詞： 半晶態(tài)硅酸鈣 結(jié)晶狀態(tài) 過濾速度 含水率　出處：《天津大學學報(自然科學與工程技術(shù)版)》2016年03期 　論文類型：期刊論文

【摘要】：以Na_2Si O_3·9H_2O和CaO為原料,采用水熱合成法通過控制反應(yīng)時間合成了不同結(jié)晶度的硅酸鈣產(chǎn)品.利用XRD和SEM等技術(shù)手段對合成樣品的結(jié)晶狀態(tài)進行表征,并利用自組裝過濾性能測試裝置對合成樣品的過濾性能進行分析.研究了硅酸鈣類材料結(jié)晶狀態(tài)對其過濾性能的影響.結(jié)果表明,在200,℃條件下,經(jīng)過8,h的合成反應(yīng)結(jié)晶過程基本完成,反應(yīng)的歷程為:C—S—H凝膠→結(jié)晶C—S—H→硬硅鈣石晶體.隨著反應(yīng)時間的延長,硅酸鈣產(chǎn)品的晶體結(jié)構(gòu)由團絮狀向纖維狀結(jié)構(gòu)轉(zhuǎn)化.4,h樣品過濾性能最好,其平均過濾速度比結(jié)晶過程完成時提高了40%,,濾餅含水率下降了4%,.
[Abstract]:Calcium silicate products with different crystallinity were synthesized by hydrothermal synthesis method using Na_2Si O _ 3 路9H _ 2O and CaO as raw materials. The crystalline state of the synthesized samples was characterized by means of XRD and SEM. The effects of crystalline state of calcium silicate materials on the filtration properties of synthetic samples were studied by using a self-assembled filtration performance test device. The results showed that, at 200,200 鈩，

本文編號：1535600