聚磷酸钙镁的制备研究

doi:10.19964/j.issn.1006-4990.2021-0773

Abstract

Abstract:

In view of the intractable use of wet?process phosphoric?acid slag and phosphate tailing，a strategy was proposed for preparing calcium magnesium polyphosphate fertilizer via calcining wet?process phosphoric?acid slag and phosphate tailing composites.Based on the decomposition ratio of phosphate tailing，the suitable mass ratio of phosphate tailing and wet?process phosphoric?acid slag was 0.30，and the decomposition ratio was 80.18%.The results of calcination process showed that both increasing temperature and prolonging time promoted the growth of polyphosphate chain.The average?degree of polymerization was increased from 1.00 to 3.23 after calcinating at 105~460 ℃ for 1.0 h.Among them，at 340 ℃ the polymerization rate reached 85%，but the polymerization degree was still increasing.Although the water solubility of fertilizer decreased gradually with the increase of polymerization chain，the available phosphorus content was still more than 90% when the temperature did not exceed 340 ℃.After calcination at 340 ℃ for 1.0~2.0 h，it was found that when calcination time was 1.0 h，the polymerization rate and average degree of polymerization reached 87.4% and 2.80，respectively.Optimizing the processing parameters，the polycondensation could be controlled on the level of polymerization degree distribution，which opened a new direction for the construction of slow-release fertilizer.Polyphosphate containing species with polymerization degree from 1 to 10 could be optimized under the calcination of 340 ℃ for 1.0 h，which resulted with amorphous and porous-structure.The available phosphorus，calcium and magnesium were over 85%（mass fraction），which could be used as a new multi?element slow?release fertilizer.

Key words: wet?process phosphoric?acid slag, phosphate tailing, calcium magnesium polyphosphate, degree of polymerization, resource utilization

CLC Number:

TQ442.33

MIAO Linping,XU Miao,WANG Xinlong,YAN Zhengjuan,XU Dehua,YANG Jingxu. Study on preparation of calcium magnesium polyphosphate[J]. Inorganic Chemicals Industry, 2022, 54(9): 63-68.

Figures/Tables 9

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References 18

[1]	JIANG Songyan， HUA Hui， SHENG Hu， et al.Phosphorus footprint in China over the 1961-2050 period:Historical perspective and future prospect[J].Science of the Total Environment，2019，650:687-695.
[2]	LIANG Haijun， ZHANG P， JIN Zhen， et al.Rare earth and phosphorus leaching from a flotation tailings of Florida phosphate ro⁃ ck[J].Minerals，2018，8（9）.Doi:10.3390/min8090416. doi: 10.3390/min8090416.
[3]	傅英.简述磷酸渣酸资源化利用技术研究[J].山东化工，2017，46（5）:151，154.
[4]	YANG Jingxu， KONG Xingjian， XU Dehua， et al.Evolution of the polydispersity of ammonium polyphosphate in a reactive extrusion process:Polycondensation mechanism and kinetics[J].Chemical Engineering Journal，2019，359:1453-1462.
[5]	WANG Xuewei， GAO Yanju， HU Baowei， et al.Comparison of the hydrolysis characteristics of three polyphosphates and their effects on soil phosphorus and micronutrient availability[J].Soil Use and Management，2019，35（4）:664-674.
[6]	凌浩瀚，王辛龙，许德华，等.不同聚合度水溶性聚磷酸铵螯合镁离子的研究[J].无机盐工业，2019，51（12）:20-22，34.
	LING Haohan， WANG Xinlong， XU Dehua， et al.Effect of water⁃soluble ammonium polyphosphate with different degree of polymerization on chelation of magnesium ion[J].Inorganic Chemicals Industry，2019，51（12）:20-22，34.
[7]	郑建国，于南树，刘永秀，等.磷酸活化磷尾矿制取聚合态钙镁磷肥的工艺条件研究[J].无机盐工业，2020，52（2）:43-46.
	ZHENG Jianguo， YU Nanshu， LIU Yongxiu， et al.Study on technological conditions of polymeric calcium magnesium phosphate fertilizer from phosphoric acid activated phosphate tailings[J].Inorganic Chemicals Industry，2020，52（2）:43-46.
[8]	CHANDRA P K， GHOSH K， VARADACHARI C.A new slow⁃releasing iron fertilizer[J].Chemical Engineering Journal，2009，155（1/2）:451-456.
[9]	尹伟，黄进，解田，等.磷酸高效分解磷矿实验研究[J].无机盐工业，2020，52（9）:34-36.
	YIN Wei， HUANG Jin， XIE Tian， et al.Experimental study on high efficiency decomposition of phosphate rock by phosphoric acid[J].Inorganic Chemicals Industry，2020，52（9）:34-36.
[10]	邵一鑫，张泽强，黄朝德，等.工业磷酸分解磷矿影响因素及副产物性质研究[J].无机盐工业，2019，51（6）:49-52.
	SHAO Yixin， ZHANG Zeqiang， HUANG Chaode， et al.Research on influencing factors of industrial phosphoric acid decomposing phosphate rock and properties of by⁃products[J].Inorganic Che⁃micals Industry，2019，51（6）:49-52.
[11]	YANG Jingxu， XIE Wenji， KONG Xingjian， et al.Reactive extrusion of ammonium polyphosphate in a twin-screw extruder:Polydispersity improvement[J].Chemical Engineering and Processing:Process Intensification，2018，133:58-65.
[12]	XIE Wenji， WANG Xinlong， LI Yongsheng， et al.Simultaneous determination of various phosphates in water⁃soluble ammonium polyphosphate[J].Chromatographia，2019，82（11）:1687-1695.
[13]	郑君花，王修俊，冯廷萃，等.利用磷尾矿生产含磷有机肥料的固体发酵研究[J].广东农业科学，2014，41（14）:61-65，79.
	ZHENG Junhua， WANG Xiujun， FENG Tingcui， et al.Study on solid⁃state fermentation of producing phosphorus⁃containingorga⁃
	nic fertilizer using phosphate tailings[J].Guangdong Agricultural Sciences，2014，41（14）:61-65，79.
[14]	WALTER G， VOGEL J， HOPPE U， et al.Structural study of magnesium polyphosphate glasses[J].Journal of Non-Crystalline Solids，2003，320（1/2/3）:210-222.
[15]	吴航，张丽芳，白威，等.聚合温度对聚磷酸钙聚合度及结构的影响[J].无机材料学报，2012，27（2）:174-178.
	WU Hang， ZHANG Lifang， BAI Wei， et al.Effect of polymerization temperature on polymerization degree and structure of calcium polyphosphate[J].Journal of Inorganic Materials，2012，27（2）:174-178.
[16]	CHEN Fangping， WANG Kai， LIU Changsheng.Crystalline structure and its effects on the degradation of linear calcium polyphosphate bone substitute[J].Applied Surface Science，2008，255（2）:270-272.
[17]	吕孝福，许德华，张志业，等.磷酸二氢铵-磷酸氢二铵-聚磷酸铵-水四元体系相平衡的实验与计算[J].过程工程学报，2021，21（1）:64-70.
	Xiaofu LÜ， XU Dehua， ZHANG Zhiye， et al.Experiment and calculation for phase equilibria in quaternary system of ammonium dihydrogen phosphate⁃diammonium hydrogen phosphate⁃ammonium polyphosphate⁃water[J].The Chinese Journal of Process Engineering，2021，21（1）:64-70.
[18]	WEEKS JR J J， HETTIARACHCHI G M.A review of the latest in phosphorus fertilizer technology:Possibilities and pragmatism[J].Journal of Environmental Quality，2019，48（5）:1300-1313.

原料	主要成分质量分数/%
原料	P₂O₅	CaO	MgO	SiO₂	Fe₂O₃	Al₂O₃	SO₃	CO₂	SO₄^2-	F
磷尾矿	7.41	32.99	15.35	6.36	0.70	0.57	1.53	31.64	—	0.87
磷酸渣	34.63	2.37	1.34	1.75	0.83	1.48	—	—	5.76	2.98

组成	w（P₂O₅）/%	w（CaO）/%	w（MgO）/%
总养分	52.15	17.12	8.24
水溶养分	5.26	4.96	1.35
有效养分	47.56	14.79	7.31
有效养分占总养分比例	91.21	86.38	88.71

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation of calcium magnesium polyphosphate

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