Effects of impurities in leaching liquid of phosphogypsum desulfurization slag on crystal form of calcium carbonate

doi:10.16085/j.issn.1000-6613.2016.11.049

Chemical Industry and Engineering Progress ›› 2016, Vol. 35 ›› Issue (11): 3714-3719.DOI: 10.16085/j.issn.1000-6613.2016.11.049

Previous Articles Next Articles

Effects of impurities in leaching liquid of phosphogypsum desulfurization slag on crystal form of calcium carbonate

CHEN Qiuge, WANG Jian, ZHANG Zhiye, WANG Xinlong, YANG Lin, ZHONG Benhe, YANG Xiushan

College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan China

Received:2016-05-03 Revised:2016-06-28 Online:2016-11-05 Published:2016-11-05

磷石膏脱硫钙渣浸取液中杂质对碳酸钙晶型的影响

陈秋鸽, 王戬, 张志业, 王辛龙, 杨林, 钟本和, 杨秀山

四川大学化学工程学院, 四川成都 610065

通讯作者: 杨秀山,博士,研究方向为化工资源与环保。E-mail:yangxs@scu.edu.cn。
作者简介:陈秋鸽(1991-),女,硕士研究生。E-mail:chqiuge@sina.com。
基金资助:
国家高技术研究发展计划（2011AA06A106）及四川大学青年教师科研启动基金（2014SCU11020）项目。

Abstract

Abstract: Phosphogypsum (PG) desulfurization slag is the residue from chemical decomposition of PG, of which the main component is CaO. Leaching PG desulfurization slag with an ammonium chloride solution and carbonating with CO₂ to prepare calcium carbonate is an effective way to utilize the calcium in the slag. In this paper, the composition, calcium leaching rate and pH of leaching liquid in different concentrations of ammonium chloride were analyzed. To find out the influence of ions such as ammonia, iron, aluminum and magnesium in the leaching liquid on the crystal form of calcium carbonate, NH₄Cl-NH₃·H₂O solution containing impure ions were prepared and the XRD crystal forms of products were compared with the products obtained by PG desulfurization slag under the same conditions. It turned out that with the increasing of ammonium chloride concentration, pH value and content of aluminum decreased, while the content of iron and magnesium increased. Within the scope of the concentration of ammonium chloride, NH₄⁺has a promoting effect on the formation of vaterite; iron and magnesium facilitate the formation of calcite. Because aluminum's form is different with the increasing of ammonium chloride concentration, aluminum facilitates the formation of vaterite when the concentration of ammonium chloride was 1mol/L, but facilitates the formation of calcite when the concentration of ammonium chloride was up to 1mol/L. The interaction of impurities made the crystal form of vaterite when the concentration of ammonium chloride was below 4mol/L. However, when the concentration of ammonium chloride was 4mol/L, the interaction of impurities made the product a mixture crystal form of vaterite and calcite.

Key words: PG desulfurization slag, ammonium chloride, effects of impurities, crystal form of calcium carbonate

摘要： 磷石膏脱硫钙渣是磷石膏化学分解后产生的以氧化钙为主要成分的尾渣。以氯化铵溶液浸取磷石膏脱硫钙渣并碳化浸取液以制备轻质碳酸钙是一种有效利用磷石膏脱硫钙渣中钙资源的方法。本文分析了该方法在不同氯化铵浓度下浸取液的组成、钙浸出率及pH，同时为了研究浸取液中NH₄⁺、铁、铝、镁等对产品碳酸钙晶型的影响，配制了含有杂质离子的NH₄Cl-NH₃·H₂O溶液，比较了其碳化产品与相同条件下脱硫钙渣碳化产品的晶型差异。结果表明，随氯化铵浓度升高，浸取液pH降低，铝含量降低，铁、镁含量升高。在氯化铵浓度范围内，NH₄⁺对球霰石形成有促进作用，而铁、镁杂质对方解石形成有促进作用，由于铝离子存在形态不同，铝在1mol/L时对形成球霰石有促进作用，在大于1mol/L时对形成方解石有促进作用。当氯化铵浓度小于4mol/L时，各种杂质相互作用形成球霰石晶型，氯化铵浓度等于4mol/L时，各种杂质相互作用形成球霰石和方解石混合晶型。

关键词: 磷石膏脱硫钙渣, 氯化铵, 杂质影响, 碳酸钙晶型

CLC Number:

TQ09

CHEN Qiuge, WANG Jian, ZHANG Zhiye, WANG Xinlong, YANG Lin, ZHONG Benhe, YANG Xiushan. Effects of impurities in leaching liquid of phosphogypsum desulfurization slag on crystal form of calcium carbonate[J]. Chemical Industry and Engineering Progress, 2016, 35(11): 3714-3719.

陈秋鸽, 王戬, 张志业, 王辛龙, 杨林, 钟本和, 杨秀山. 磷石膏脱硫钙渣浸取液中杂质对碳酸钙晶型的影响[J]. 化工进展, 2016, 35(11): 3714-3719.

References

[1] 杨秀山,刘荆风,余家鑫,等.磷石膏制硫酸的研究进展[J].现代化工,2010,30(9):8-12.
[2] 方祖国,宁平,杨月红,等.复合还原剂还原分解磷石膏的影响因素[J].化工进展,2009,28(3):522-527.
[3] 田立楠.磷石膏综合利用[J].化工进展,2002,21(1):56-59.
[4] 叶学东.磷石膏综合利用现状及加快发展的建议[J].磷肥与复肥,2014,29(6):1-3.
[5] 钟本和,王辛龙,张志业,等.我国磷石膏利用途径的探讨[J].磷肥与复肥,2010,25(3):61-63.
[6] 王辛龙,张志业,杨秀山,等.我国磷石膏利用新途径的分析[J].现代化工,2011, 31(5):1-5.
[7] 刘少文,张茜,吴元欣,等.热分析在磷石膏制酸反应研究中的应用[J].化工进展,2008,27(5):761-764.
[8] MA L P,NING P,ZHENG S C,et al.Reaction mechanism and kinetic analysis of the decomposition of phosphogypsum via a solid-state reaction[J].Industrial and Engineering Chemistry Research,2010,49(8):3597-3602.
[9] ZHENG S C,NING P,MA L P,et al.Reductive decomposition of phosphogypsumwith high-sulfur-concentration coal to SO₂ in an inert atmosphere[J].Chemical Engineering Research and Design,2011,89(12):2736-2741.
[10] YANG X S,ZHANG Z Y,WANG X L,et al.Thermodynamic study of phosphogypsum decomposition by sulfur[J].The Journal of Chemical Thermodynamics,2013,57(2013):39-45.
[11] 庞仁杰.以硫代碳化学分解石膏制硫酸的可行性分析[J].硫酸工业,2015(2):22-25.
[12] 郑绍聪,宁平,汪帆,等.磷石膏热分解制备二氧化硫和氧化钙研究[J].无机盐工业,2013,49(9):45-47.
[13] 时婷,王新刚,巫建峰,等.磷石膏脱硫钙渣制备轻质碳酸钙[J].化工进展,2015,34(1):178-182.
[14] 陈先勇,唐琴,史伯安,等.多种晶形超细碳酸钙的制备研究[J].化学工程师,2005,19(3):13-15.
[15] NORA H.de L,STEPHEN CP.Surface structure and morphology of calcium carbonate polymorphs calcite,aragonite,and vaterite: an atomistic approach[J].Journal of Physical Chemistry B,1998,102:2914-2922.
[16] HELMUT C.Precipitation of carbonates: recent progress in controlled production of complex shapes[J].Current Opinion in Colloid and Interface Science,2003,8:23-31.
[17] 王勇,赵风云,胡永琪,等.晶型控制剂对沉淀碳酸钙晶型、形态的影响[J].无机盐工业,2006,38(3):5-8.
[18] NICOLE G,HELMUT C,NICOLA P,et al.Superstructures of calcium carbonate crystals by oriented attachment[J].Crystal Growth & Design,2005,5(4):1317-1319.

Effects of impurities in leaching liquid of phosphogypsum desulfurization slag on crystal form of calcium carbonate

磷石膏脱硫钙渣浸取液中杂质对碳酸钙晶型的影响

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 10

Recommended Articles

Metrics

Comments

[1]	KANG Yu, GOU Zenian. Kinetics studies of carbon gas hydrate separation in the presence of amino acids and DTAC [J]. Chemical Industry and Engineering Progress, 2023, 42(10): 5067-5075.
[2]	LI Ziyong, CHEN Long, MA Wendan, ZHOU Hongjun, ZHOU Xinhua. Preparation and properties of Avermectin-loaded PDMDAAC modified Zein nanoparticles [J]. Chemical Industry and Engineering Progress, 2022, 41(4): 2068-2074.
[3]	LIU Chenmin, LIU Xixi, CHEN Xiaopeng, WANG Weichao, LIAO Dankui, MENG Xiusong, TONG Zhangfa. Preparation of spherical calcium carbonate by high-gravity reaction crystallization carbonization [J]. Chemical Industry and Engineering Progress, 2021, 40(11): 6323-6331.
[4]	Chengcheng XIE, Mingjun PANG, Jianwei CHAO. Effect of synergistic effect of temperature and shear rate on apparent viscosity of cetyltrimethyl ammonium chloride solution [J]. Chemical Industry and Engineering Progress, 2019, 38(05): 2441-2450.
[5]	ZHOU Qiang, DUAN Yufeng, MAO Yongqiu, ZHU Chun. Gaseous Hg⁰ removal by NH₄Cl modified activated carbon [J]. Chemical Industry and Engineering Progress, 2018, 37(10): 4068-4073.
[6]	WANG Jian, ZHANG Xubin, WANG Fumin, CAI Wangfeng. Decomposition of ammonium chloride by organic amine [J]. Chemical Industry and Engineering Progree, 2016, 35(05): 1309-1313.
[7]	DONG Rui, WANG Yuan, LIU Tingting. Flocculation of chlorella by composite of modified starch and attapulgite [J]. Chemical Industry and Engineering Progree, 2015, 34(05): 1433-1439.
[8]	JIANG Shan，LI Xiaqian，MIAO Yang，YU Qiang. Preparation and characterization of polymeric flocculant [J]. Chemical Industry and Engineering Progree, 2014, 33(07): 1816-1821.
[9]	SUN Mingshuai1，WANG Fumin1，CAI Wangfeng 1，ZHANG Xubin1，JIA Zhifang2. Research on the application of ammonium chloride [J]. Chemical Industry and Engineering Progree, 2014, 33(04): 999-1005.
[10]	FENG Xiaohai1，CHEN Fei1，YAO Zhong1，ZHANG Yan2，XU Hong1. Extraction of propionic acid from fermentation broth by chemical complexation [J]. Chemical Industry and Engineering Progree, 2010, 29(5): 812-.