Inorganic Chemicals Industry >
Identification of colored substances in wet process phosphoric acid leaching slurry
Received date: 2021-03-16
Online published: 2022-03-14
The phosphoric acid leaching slurry was collected in the phosphoric acid production process section.The solution was obtained after dissolving by N,N-Dimethylformamide and n-hexane,the solids obtained by removing soluble phosphoric acid and salts by water washing were used to judge the composition and coloring of small molecule organic matter by gas chromatography-mass spectrometry.The solid samples after washing were identified by XRD and XRF,and the composition of coloring substances in phosphoric acid leaching slurry was determined.The composition and content of organic matter were determined by TG and FT-IR spectrometer.The existence of samples was determined by SEM.The experimental results showed that the main coloring material was a complex composed of FeS2 and organics,its existence form was organic matter incomple-tely encapsulating FeS2.The mass fraction of FeS2 was 10.70%(based on Fe) and the mass fraction of organic matter was 2.39% (of wet based raw phosphoric acid extraction slurry).
Xianshun WANG , Yan DOU , Qi WANG , Peng CUI , Jun MA , Hao SHEN , Zhiyin ZHENG , Rong LIU . Identification of colored substances in wet process phosphoric acid leaching slurry[J]. Inorganic Chemicals Industry, 2022 , 54(1) : 86 -90 . DOI: 10.19964/j.issn.1006-4990.2021-0150
[1] | 白海丹. 2019年我国磷石膏利用现状、问题及建议[J]. 硫酸工业, 2020(12):7-10. |
[2] | VINNICHENKO V, RIAZANOV A. Environmental problems of pho-sphogypsum utilization[J]. Key Engineering Materials, 2020, 864:108-114. |
[3] | HUANG Y, QIAN J, KANG X, et al. Belite-calcium sulfoaluminate cement prepared with phosphogypsum:Influence of P2O5 and F on the clinker formation and cement performances[J]. Construction and Building Materials, 2019, 203:432-442. |
[4] | 陶长元, 王秀秀, 刘作华, 等. 湿法磷酸浸出强化及有机质去除研究[J]. 化工学报, 2020, 71(10):4792-4799. |
[5] | HAN Y, CUI X, LV X, et al. Preparation and characterization of geo-polymers based on a phosphoric-acid-activated electrolytic man-ganese dioxide residue[J]. Journal of Cleaner Production, 2018, 205(20):488-498. |
[6] | KHOUALDIA B, LOUNGOU M, ELALOUI E. Adsorption of organic matter from industrial phosphoric acid(H3PO4) onto activated ben-tonite[J]. Arabian Journal of Chemistry, 2017, 10:S1073-S1080. |
[7] | LI G, ZHOU Q, ZHU Z, et al. Selective leaching of nickel and cobalt from limonitic laterite using phosphoric acid:An alternative for val-ue-added processing of laterite[J]. Journal of Cleaner Production, 2018, 189(10):620-626. |
[8] | 张利珍, 张永兴, 张秀峰, 等. 中国磷石膏资源化综合利用研究进展[J]. 矿产保护与利用, 2019, 39(4):14-18,92. |
[9] | 刘林程, 左海滨, 许志强. 工业石膏的资源化利用途径与展望[J]. 无机盐工业, 2021, 53(10):1-9. |
[10] | 石鑫, 杨绍利, 马兰. “三石膏”综合利用现状及其新工艺[J]. 现代化工, 2020, 40(9):8-13,19. |
[11] | 冯洋, 杨林, 曹建新, 等. 磷石膏煅烧改性制备自流平砂浆的研究[J]. 硅酸盐通报, 2020, 39(9):2891-2897. |
[12] | 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. |
[13] | LIU Y, ZHANG Q, CHEN Q, et al. Utilisation of water-washing pre-treated phosphogypsum for cemented paste backfill[J]. Minerals, 2019, 9(3).Doi: 10.3390/min9030175. |
[14] | MASHIFANA T P. Chemical treatment of phosphogypsum and its potential application for building and construction[J]. Procedia Manufacturing, 2019, 35:641-648. |
[15] | 吴宝建, 吕昕峰, 张清杰, 等. 磷石膏湿法偶联除杂规律初探[J]. 无机盐工业, 2020, 52(12):55-58. |
[16] | 李欣霖, 纪利俊, 陈葵, 等. 有机溶剂浸取法净化磷石膏[J]. 化工矿物与加工, 2018, 47(3):23-27. |
[17] | 杨帆. 油页岩的热转化利用[D]. 西安:西北大学, 2009. |
[18] | 熊毅. 土壤胶体[M]. 北京: 科学出版社, 1983. |
[19] | 张超. 油页岩中有机质与矿物质赋存关系及分离方法研究[D]. 北京:中国矿业大学(北京), 2019. |
/
〈 |
|
〉 |