JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2015, Vol. 45 ›› Issue (1): 82-87.doi: 10.6040/j.issn.1672-3961.0.2014.196

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Effects of reaction conditions on the size distribution of iron phosphate

LUO Yanhua1,2, SHE Shijie2, CAO Weiguo1, PAN Feng1,3   

  1. 1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;
    2. Anhui Tianyuan Technology Co. Ltd, Sinosteel Corporation, Maanshan 243000, Anhui, China;
    3. National Quality Supervision and Inspection Center for Industrial Explosive Materials, Nanjing 210094, Jiangsu, China
  • Received:2014-07-17 Revised:2015-01-08 Published:2014-07-17

Abstract: The process parameters of preparing iron phosphate in ethanol system were optimized by the method of orthogonal experiment. The results showed that the influencing order of the parameters affecting the particle size distribution of iron phosphate was ethanol addition rate, reaction temperature and stirring speed. The ethanol adding speed was the key factor to influence the size distribution of iron phosphate. When the addition of ethanol was 40 L/min, the reaction temperature was 90 ℃ and the stirring speed was 60 r/min, the d50 of iron phosphate was 0.73 μm. When the addition of ethanol was 10 L/min, the reaction temperature was 50 ℃ and the stirring speed was 120 r/min, the d50 of iron phosphate was 2.10 μm. The physical-chemical indicators of iron phosphate were charaterized by SEM, BET and XRF. When d50 was 0.73 μm, the BET of iron phosphate was larger than 60 m2/g. When d50 was 2.10 μm, the BET of iron phosphate was approximately 45 m2/g. The molar ratio of P and Fe of two kinds of iron phosphate was about 1:1. The content of sulfur was relatively high, when the particle size of iron phosphate was smaller.

Key words: ethanol, iron phosphate, orthogonal experiment, particle size, sulfur content

CLC Number: 

  • O614.81
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