| 高Ca~(2+)浓度CO_2沉淀法由电石渣制备纳米CaCO_3 |
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| 引用本文： | 王百年,葛礼响,曹萌,杨保俊.高Ca~(2+)浓度CO_2沉淀法由电石渣制备纳米CaCO_3[J].化工环保,2016,36(4):460-465. |
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| 作者姓名： | 王百年 葛礼响 曹萌 杨保俊 |
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| 作者单位： | 合肥工业大学 化学与化工学院,安徽 合肥 230009 |
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| 摘 要： | 以NH4Cl溶液为浸取剂、CO2为碳化剂、多聚磷酸钠(STP)为添加剂,由电石渣制备纳米Ca CO3。实验结果表明:电石渣浸取液Ca2+浓度为1.0 mol/L、STP加入量为3.00%时,可制备出粒径为30~60 nm的纳米Ca CO3;STP可有效控制纳米Ca CO3的粒度和形貌;在最佳工艺条件下,由电石渣制备纳米Ca CO3的产率为80%,处理1 t电石渣产生的经济效益约为2 670元。
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| 关 键 词： | 纳米CaCO3 电石渣 氯化铵 三聚磷酸钠 CO2 |
| 收稿时间： | 2015-12-04 |
Preparation of nano CaCO3 from calcium carbide residue by CO2 precipitation with high Ca2+ concentration |
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| Wang Bainian,Ge Lixiang,CaoMeng,Yang Baojun.Preparation of nano CaCO3 from calcium carbide residue by CO2 precipitation with high Ca2+ concentration[J].Environmental Protection of Chemical Industry,2016,36(4):460-465. |
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| Authors: | Wang Bainian Ge Lixiang CaoMeng Yang Baojun |
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| Institution: | College of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei Anhui 230009,China |
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| Abstract: | Nano CaCO3 was prepared from calcium carbide residue using NH4Cl solution as leaching agent,CO2 as carbonation agent,sodium tripolyphosphate(STP) as additive agent. The experimental results show that:When Ca2+ concentration of calcium carbide residue leaching solution is1.0 mol/L and STP dosage is 3.00%,the nano CaCO3 with 30-60 nm of particle size is prepared;STP has good effect on control of particle size and morphology of nano CaCO3;Under the optimum technological conditions,the yield of nano CaCO3 from calcium carbide residue is 80%,and the economic benefits of calcium carbide residue treatment is 2 670 yuan per ton. |
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| Keywords: | nano CaCO3 calcium carbide residue ammonium chloride sodium tripolyphosphate CO2 |
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