钙硅渣湿法处理工艺

张亚莉; 于先进; 张邦胜; 张丽鹏; 李德刚; 李小斌

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DOI:DOI：10.3969/j.issn.1007-7545.2011.06.002

有色金属（冶炼部分）:2011,(6):6-9

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钙硅渣湿法处理工艺

张亚莉¹, 于先进¹, 张邦胜², 张丽鹏¹, 李德刚¹, 李小斌³

(1.山东理工大学化学工程学院，山东淄博 255081;2.北京矿冶研究总院，北京 100070;3.中南大学冶金科学与工程学院，长沙 410083)

Hydro-treatment Technology of Hydrategarnet

ZHANG Ya-li¹, YU Xian-jin¹, ZHANG Bang-sheng², ZHANG Li-peng¹, LI De-gang¹, LI Xiao-bin³

(1.College of Chemical Engineering, Shandong University, Zibo 255081, Shandong, China;2.Beijing General Research Institute of Mining & Metallurgy, Beijing 100070, China;3.College of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)

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中文摘要: 研究钙硅渣湿法处理最佳工艺条件，确定CO2浓度、CO2气体的添加方式、分解次数、时间、温度、液固比、碱液和铝酸钠浓度等因素对钙硅渣湿法分解的影响。有利于硅渣湿法分解的条件是延长反应时间，增加分解次数，采用合适的添加方式，确定适宜的温度范围。CO2浓度、液固比对钙硅渣湿法分解的影响不明显。在钙硅渣湿法分解过程中，含硅化合物转化成在碱液中相对稳定的水合硅酸钙，而含铝化合物转化成在碱液中反应活性较好的氢氧化铝等。适宜的转型工艺条件是CO2浓度8%~100%，分解时间2h左右，L/S 5~10，温度50℃左右，分解次数为三次。

中文关键词: 冶金技术水化石榴石湿法处理铝硅分离

Abstract:The optimal condition of the hydrategarnet hydro-treatment is investigated and the influencing factors are described, such as CO2 concentration, measures of CO2 addition, times of decomposition, retention time, temperature, ratio of liquid/solid and alkali liquor to aluminate etc. Prolonging of reaction time, increasing hydro-treatment times, adequate measures of CO2 addition and the optimal temperature range are favorable to the transformation of the hydrate garnet. Variation of CO2 concentration and L/S ratio are of little influence on the hydro-treatment. It is indicated that in the process of decomposition of hydrategarnet, the the compound containing silica is transformed into calcium hydrate silicate which exists in stability in caustic solution, and compound containing alumina into aluminum hydroxide which appears in a good reactivity in caustic solution. The optimal parameters for the transformation are 8%~10% CO2 concentration, 2h reaction time, 5~10 L/S ratio, 50℃ temperature and three times treatment.

keywords: metallurgical technology hydrategarnet hydro-treatment separation of alumina from silica

文章编号： 中图分类号： 文献标志码：

基金项目:山东省自然科学基金资助项目(ZR2010EL006)；淄博市科技项目(2006kjm39)

作者	单位
张亚莉	山东理工大学化学工程学院,山东淄博 255081
于先进	山东理工大学化学工程学院,山东淄博 255081
张邦胜	北京矿冶研究总院,北京 100070
张丽鹏	山东理工大学化学工程学院,山东淄博 255081
李德刚	山东理工大学化学工程学院,山东淄博 255081
李小斌	中南大学冶金科学与工程学院,长沙 410083

Author Name	Affiliation
ZHANG Ya-li	College of Chemical Engineering, Shandong University, Zibo 255081, Shandong, China
YU Xian-jin	College of Chemical Engineering, Shandong University, Zibo 255081, Shandong, China
ZHANG Bang-sheng	Beijing General Research Institute of Mining & Metallurgy, Beijing 100070, China
ZHANG Li-peng	College of Chemical Engineering, Shandong University, Zibo 255081, Shandong, China
LI De-gang	College of Chemical Engineering, Shandong University, Zibo 255081, Shandong, China
LI Xiao-bin	College of Metallurgical Science and Engineering, Central South University, Changsha 410083, China

引用文本：
张亚莉,于先进,张邦胜,张丽鹏,李德刚,李小斌.钙硅渣湿法处理工艺[J].有色金属（冶炼部分）,2011(6):6-9.
ZHANG Ya-li,YU Xian-jin,ZHANG Bang-sheng,ZHANG Li-peng,LI De-gang,LI Xiao-bin.Hydro-treatment Technology of Hydrategarnet[J].Nonferrous Metals (Extractive Metallurgy),2011(6):6-9.

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