磷石膏共反浮选除杂增白工艺研究
收稿日期: 2024-02-07
网络出版日期: 2024-03-18
基金资助
湖北省科技重大专项(2022ACA004-6);湖北三峡实验室开放创新基金项目(SC232006)
Study on co⁃reverse flotation process of phosphogypsum for impurity removal and whitening
Received date: 2024-02-07
Online published: 2024-03-18
磷石膏中硅、有机质和可溶性氟等杂质严重制约磷石膏增值化利用。目前,浮选法是运用最广的预处理工艺,但正浮选成本高、工艺复杂,传统反浮选药剂稳定性和分散性差。针对以上问题,以磷石膏为研究对象,通过一段式共反浮选工艺对磷石膏中硅、有机质和可溶性氟等杂质的脱除展开了研究,并对新型苄基季铵盐共反浮选药剂(PG-1)反浮选后的精矿进行了SEM-EDS、XRD和XPS分析。结果表明:在矿浆自然pH为2.3~2.5,甲基异丁基甲醇(MIBC)用量为300 g/t、PG-1用量为300 g/t、矿浆浓度为25%(质量分数)、曝气量为0.20 m3/h的最佳工艺条件下,CaSO4·2H2O质量分数为86.75%、SiO2质量分数为6.68%、白度为32.59%、有机质质量分数为0.72%、可溶性氟质量分数为0.40%的原磷石膏经过一段式共反浮选除杂增白后,可获得SiO2质量分数为2.47%、白度为63.74%、有机质质量分数为0.03%、可溶性氟质量分数为0.039%、产率为80.17%、CaSO4·2H2O质量分数为93.52%的磷石膏精矿,达到了GB/T 23456—2018《磷石膏》中建材石膏一级品的要求。该研究为磷石膏增值化利用的预处理过程提供了一种新方法。
陈小红 , 余意 , 朱淼 , 叶恒朋 , 陈绍华 , 李育彪 . 磷石膏共反浮选除杂增白工艺研究[J]. 无机盐工业, 2024 , 56(10) : 86 -94 . DOI: 10.19964/j.issn.1006-4990.2024-0081
Impurities such as silicon,organic matter,and soluble fluoride in phosphogypsum severely restrict its value⁃added utilization.Currently,the flotation method is the most widely used pretreatment process,but positive flotation has high costs and complex processes,and traditional reverse flotation agents have poor stability and dispersibility.To address these issues,this study focused on phosphogypsum and research on the removal of silicon,organic matter,and soluble fluoride impurities in phosphogypsum was conducted through a one⁃stage co⁃reverse flotation process.The concentrate after new benzyl quaternary ammonium salt co⁃reverse flotation reagent(PG-1) reverse flotation was analyzed by SEM-EDS,XRD and XPS.The results showed that under the optimal process conditions of natural slurry pH of 2.3~2.5,MIBC dosage of 300 g/t,PG-1 dosage of 300 g/t,slurry concentration of 25%,and aeration rate of 0.20 m3/h,the raw phosphogypsum had a CaSO4·2H2O content was 86.75%,SiO2 content was 6.68%,whiteness was 32.59%,organic matter content was 0.72%,and soluble fluoride content was 0.40%.After a one⁃stage co⁃reverse flotation to remove impurities and increase whiteness,the obtained phosphogypsum concentrate had a SiO2 content of 2.47%,whiteness of 63.74%,organic matter content of 0.03%,soluble fluoride content of 0.039%,a yield of 80.17%,and CaSO4·2H2O content of 93.52%,meeting the requirements of the building gypsum first⁃grade product in the national standard GB/T 23456—2018“phosphogypsum”.This research provided a new method for the pretreatment process of value⁃added use of phosphogypsum.
Key words: phosphogypsum; co-reverse flotation; desilication; whitening; purification
| 1 | VENKITESHWARAN K, MCNAMARA P J, MAYER B K.Meta?analysis of non?reactive phosphorus in water,wastewater,and sludge,and strategies to convert it for enhanced phosphorus removal and recovery[J].The Science of the Total Environment,2018,644:661-674. |
| 2 | HAK S A, SRAIDI A, KHALESS K,et al.Two steps leaching process for recovery of rare earths from moroccan phosphogypsum[J].Journal of Cleaner Production,2023,427:138976. |
| 3 | 崔荣政,白海丹,高永峰,等.磷石膏综合利用现状及 “十四五” 发展趋势[J].无机盐工业,2022,54(4):1-4. |
| CUI Rongzheng, BAI Haidan, GAO Yongfeng,et al.Current situation of comprehensive utilization of phosphogypsum and its development trend of 14th Five-Year Plan[J].Inorganic Chemicals Industry,2022,54(4):1-4. | |
| 4 | 邓华,侯硕旻,李中军,等.磷石膏综合利用现状及展望[J].无机盐工业,2024,56(1):1-8,22. |
| DENG Hua, HOU Shuomin, LI Zhongjun,et al.Current situation and prospect of comprehensive utilization of phosphogypsum[J].Inorganic Chemicals Industry,2024,56(1):1-8,22. | |
| 5 | 杜明霞,王进明,董发勤,等.磷石膏资源化利用研究进展[J].矿产保护与利用,2020,40(3):121-126. |
| DU Mingxia, WANG Jinming, DONG Faqin,et al.Research progress on resource utilization of phosphogypsum[J].Conservation and Utilization of Mineral Resources,2020,40(3):121-126. | |
| 6 | 张利珍,张永兴,吴照洋,等.脱除磷石膏中水溶磷、水溶氟的实验研究[J].无机盐工业,2022,54(4):40-45. |
| ZHANG Lizhen, ZHANG Yongxing, WU Zhaoyang,et al.Experimental study on removal of water?soluble phosphorus and water?soluble fluorine from phosphogypsum[J].Inorganic Chemicals Industry,2022,54(4):40-45. | |
| 7 | 周晓阳,王发洲.钢渣复合磷石膏泡沫混凝土的制备及性能研究[J].混凝土,2023(10):212-215,220. |
| ZHOU Xiaoyang, WANG Fazhou.Preparation and performance study of steel slag?composite phosphogypsum foam concrete[J].Concrete,2023(10):212-215,220. | |
| 8 | ALCORDO I S, RECHCIGL J E.Phosphogypsum in agriculture:A review[M]//Advances in Agronomy Volume 49.Amsterdam:Elsevier,1993:55-118. |
| 9 | 朱鹏程,王国栋,曾波.磷石膏浮选脱硅试验研究[J].矿产综合利用,2014(6):39-42. |
| ZHU Pengcheng, WANG Guodong, ZENG Bo.Experimental study on phosphogypsum desilication by flotation[J].Multipurpose Utilization of Mineral Resources,2014(6):39-42. | |
| 10 | 王进明,董发勤,王肇嘉,等.磷石膏浮选增白净化新工艺研究[J].非金属矿,2019,42(5):1-5. |
| WANG Jinming, DONG Faqin, WANG Zhaojia,et al.Study on new technology of phosphogypsum whitening and purification by flotation[J].Non-Metallic Mines,2019,42(5):1-5. | |
| 11 | 林洲,邓铃夕,李凤玲,等.快烧对磷石膏可溶磷杂质及其脱水产物的影响[J].非金属矿,2013,36(5):1-3. |
| LIN Zhou, DENG Lingxi, LI Fengling,et al.Transformation of soluble phosphate impurities and dehydration product in phosphogypsum after fast firing[J].Non?Metallic Mines,2013,36(5): 1-3. | |
| 12 | 方竹堃.磷石膏高效水洗净化处理技术[J].云南化工,2023,50(2):114-116. |
| FANG Zhukun.High efficiency water washing purification technology of phosphogypsum[J].Yunnan Chemical Technology, 2023,50(2):114-116. | |
| 13 | 白平,胡峻菘,梁傲岚,等.磷石膏综合利用及预处理方法综述[J].现代化工,2023,43(S2):76-79. |
| BAI Ping, HU Junsong, LIANG Aolan,et al.A review on comprehensive utilization and pretreatment method of phosphogypsum[J].Modern Chemical Industry,2023,43(S2):76-79. | |
| 14 | CHEN Shun, CHEN Jizhan, HE Xingyang,et al.Micromicelle?mechanical coupling method for high?efficiency phosphorus removal and whiteness improvement of phosphogypsum[J].Construction and Building Materials,2022,354:129220. |
| 15 | 谢恩鑫,苏宏东,邓辉.改性磷石膏在普通硅酸盐水泥中的应用[J].水泥技术,2023(2):93-96. |
| XIE Enxin, SU Hongdong, DENG Hui.Application of modified phosphogypsum in ordinary Portland cement[J].Cement Technology,2023(2):93-96. | |
| 16 | 朱志伟,何东升,陈飞,等.磷石膏预处理与综合利用研究进展[J].矿产保护与利用,2019,39(4):19-25. |
| ZHU Zhiwei, HE Dongsheng, CHEN Fei,et al.Research progress on pretreatment and comprehensive utilization of phosphogyps?um[J].Conservation and Utilization of Mineral Resources,2019,39(4):19-25. | |
| 17 | 张华,李海兵,赵凤婷,等.胶磷矿反浮选脱硅捕收剂选矿试验研究[J].化工矿物与加工,2020,49(7):35-37. |
| ZHANG Hua, LI Haibing, ZHAO Fengting,et al.Beneficiation study on a desilication collector in reverse flotation of collophanite ore[J].Industrial Minerals & Processing,2020,49(7):35-37. | |
| 18 | ZHANG Han, CHAI Wencui, CAO Yijun.Flotation separation of quartz from gypsum using benzyl quaternary ammonium salt as collector[J].Applied Surface Science,2022,576:151834. |
| 19 | JIANG Hao, GAO Ya, YANG Qinhong,et al.Adsorption behaviors and mechanisms of dodecyltrimethyl ammonium chloride and cetyltrimethyl ammonium chloride on illite flotation[J].Powder Technology,2018,331:218-225. |
| 20 | HU Yuehua, CHEN Pan, SUN Wei.Study on quantitative structure?activity relationship of quaternary ammonium salt collectors for bauxite reverse flotation[J].Minerals Engineering,2012,26:24-33. |
| 21 | 夏柳荫,钟宏,刘广义.取代基对十二烷基阳离子表面活性剂捕收铝硅酸盐矿物的影响[J].中南大学学报(自然科学版),2010,41(1):83-89. |
| XIA Liuyin, ZHONG Hong, LIU Guangyi.Effect of substitution in dodecyl?cationic collectors on flotation of aluminosilicates[J].Journal of Central South University(Science and Technology),2010,41(1):83-89. | |
| 22 | 姜威,龚丽,何宾宾,等.磷石膏脱硅试验探索[J].云南化工,2019,46(12):125-127. |
| JIANG Wei, GONG Li, HE Binbin,et al.Experimental study on desilication of phosphogypsum[J].Yunnan Chemical Technology,2019,46(12):125-127. | |
| 23 | ZHU Zhanglei, FU Yafeng, YIN Wanzhong,et al.Role of surface roughness in the magnesite flotation and its mechanism[J].Particuology,2022,62:63-70. |
| 24 | QI Mengyao, PENG Weijun, WANG Wei,et al.Simple and efficient method for purification and recovery of gypsum from phosphogypsum:Reverse?direct flotation and mechanism[J].Journal of Molecular Liquids,2023,371:121111. |
| 25 | 周童.磷石膏中有机杂质的分离富集与应用探索[D].贵阳:贵州大学,2022. |
| ZHOU Tong.Separation,enrichment and application of organic impurities in phosphogypsum[D].Guiyang:Guizhou University,2022. | |
| 26 | FANG Ji, GE Yingyong, CHEN Zhijie,et al.Flotation purification of waste high?silica phosphogypsum[J].Journal of Environmental Management,2022,320:115824. |
| 27 | 王进明,杜明霞,李国欢,等.浮选净化对磷石膏制备β-半水石膏性能的影响[J].矿产保护与利用,2023,43(4):107-113. |
| WANG Jinming, DU Mingxia, LI Guohuan,et al.Effect of flotation purification on preparation of β-hemihydrate gypsum from phosphogypsum[J].Conservation and Utilization of Mineral Resources,2023,43(4):107-113. | |
| 28 | FILIPPOV L O, SEVEROV V V, FILIPPOVA I V.Mechanism of starch adsorption on Fe-Mg-Al-bearing amphiboles[J].International Journal of Mineral Processing,2013,123:120-128. |
| 29 | GUY C, SCHOTT J.Multisite surface reaction versus transport control during the hydrolysis of a complex oxide[J].Chemical Geology,1989,78(3/4):181-204. |
| 30 | HOCHELLA M F Jr, CARIM A H.A reassessment of electron escape depths in silicon and thermally grown silicon dioxide thin films[J].Surface Science,1988,197(3):L260-L268. |
| 31 | LUO Binbin, ZHU Yimin, SUN Chuanyao,et al.The flotation behavior and adsorption mechanisms of 2-((2-(decyloxy)ethyl)amino)lauric acid on quartz surface[J].Minerals Engineering,2018,117:121-126. |
| 32 | WANG Li, WANG Guodong, GE Peng,et al.Activation mechanisms of quartz flotation with calcium ions and cationic/anionic mixed collectors under alkalescent conditions[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2022,632:127771. |
| 33 | LIU Wenbao, LIU Wengang, ZHAO Qiang,et al.Investigating the performance of a novel polyamine derivative for separation of quartz and hematite based on theoretical prediction and experiment[J].Separation and Purification Technology,2020,237:116370. |
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