由除杂铝渣碱溶碳分制备高纯al( oh) - journal of northeastern .pdfVIP

第33 卷第9期 东 北 大 学 学 报 ( 自 然 科 学 版 ) V ol33, No. 9 20 12 年 9 月 Journal of Nort heastern U n vers ty( N atural Sc ence) Sep. 2 0 1 2 Al( OH)3 申晓毅, 常龙娇, 王佳东, 翟玉春 ( , 110819) : , Al ( OH) 3 , pH pH pH 14 90 10 m n ; pH 9 75 XR D, SEM , Al( OH) 3 Al ( OH) 3 , , , : ; ; ; A l( OH) 3 : T Q 127. 2 : A : 1005- 3026( 2012) 09- 13 15- 04 Preparation of High Purity Al ( OH) from Aluminous Slag 3 Using Alkali Extraction and Car onation SHEN X iao-y i, CH A N G Long-j iao, WA N G Jia-dong , ZH A I Yu-chun ( School of M ater als M etallur gy, N ortheastern U n v ers ty, Shenyang 1108 19 , Ch na. Correspond ng author: ZHAI Yu- chun , E- ma l : shenx y @ smm . neu . edu . cn) A stract: T ak ng alum nous slag of clay n ckel ore ac d soak ng l qu d as raw mater al, h gh pur ty Al ( OH ) 3 powder w as successfully prepared t hrough alkal ext ract on and spl t-step carbonat on . T he nfluences of the alkal ex tract on temperat ure and pH value on the A l d ssolut on rat e of alum nous slag, and t he pH value of carbonat on end and carbonat on temperature on the Al prec p tat on rat e w ere also nvest gated , respect vely. T he appropr ate alkal ext ract on cond t ons were pH value of 14, t emperat ure of 90 and t me of 10 m n, and the carbonat on cond t ons w ere t he pH value of t he carbonat on end of 9 and tem perature of 75 , respect vely. T he Al( OH ) 3 powder w as character zed us ng X RD, SEM and chem cal component analys s. T he results nd cat e that the crystal of A l( OH) 3 pow der grow s w ell, and t he part cles of A l( OH) 3