Preparation and Particle Size Control of Spherical MnCO_3 Powder AITranslate
Abstract AITranslate
Spherical MnCO3 powder of uniform particle size was prepared by liquid phase precipitation using MnSO4 as the manganese source and NH4 HCOa as the precipitating agent and sodium hexametaphosphate （SHMP） as the dispersant. In the paper,the impact of three primary parameters such as reaction temperature,reactant concentration and dosage rate of SHMP on the particle size of MnCO3 powder was investigated and the experimental results were charaeterized by the laser granulometer, scanning electron microscopy and X-ray diffraction. The results showed that at 10～50℃ ,the particle size of MnCOa decreased with the decrease of reaction temperature. However,too low reaction temperature results in serious agglomeration. The SHMP dosage rate η affects the particle size of MnCOa powder to a great extent and the size decreases gradually with the increase of dosage rate when dosage rate is η〈10%. The MnCO3 spherical particles of uniform size （～3.1μm） and excellent dispersibility were obtained under following processing parameters： reaction temperature up to 30℃,the ratio of [Mn2＋]/[HCO3-] up to 5 ： 1 and the dosage rate of SHMP up to 7 0/4o.
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DOI：
Chinese Library Classification Number:TQ137.12[化学工程—无机化工]
Citation Information:
Spherical MnCO3 powder of uniform particle size was prepared by liquid phase precipitation using MnSO4 as the manganese source and NH4 HCOa as the precipitating agent and sodium hexametaphosphate （SHMP） as the dispersant. In the paper,the impact of three primary parameters such as reaction temperature,reactant concentration and dosage rate of SHMP on the particle size of MnCO3 powder was investigated and the experimental results were charaeterized by the laser granulometer, scanning electron microscopy and X-ray diffraction. The results showed that at 10～50℃ ,the particle size of MnCOa decreased with the decrease of reaction temperature. However,too low reaction temperature results in serious agglomeration. The SHMP dosage rate η affects the particle size of MnCOa powder to a great extent and the size decreases gradually with the increase of dosage rate when dosage rate is η〈10%. The MnCO3 spherical particles of uniform size （～3.1μm） and excellent dispersibility were obtained under following processing parameters： reaction temperature up to 30℃,the ratio of [Mn2＋]/[HCO3-] up to 5 ： 1 and the dosage rate of SHMP up to 7 0/4o.
quote
| GB/T 7714-2015 | [1] ZHOU Wan-zhu, YE Hong-qi, HAN Kai, et al. Preparation and Particle Size Control of Spherical MnCO_3 Powder[J]. Rare Metals and Cemented Carbides, 2011(4): 13-16. |
| MLA | [1] ZHOU Wan-zhu, et al., "Preparation and Particle Size Control of Spherical MnCO_3 Powder." Rare Metals and Cemented Carbides, no. 4, 2011, pp. 13-16. |
| APA | [1] ZHOU Wan-zhu, YE Hong-qi, HAN Kai, CHEN Long, & LIU Hui. (2011). Preparation and Particle Size Control of Spherical MnCO_3 Powder. Rare Metals and Cemented Carbides(4), 13-16. |
| IEEE | [1] ZHOU Wan-zhu, YE Hong-qi, HAN Kai, CHEN Long, and LIU Hui, "Preparation and Particle Size Control of Spherical MnCO_3 Powder," Rare Metals and Cemented Carbides, no. 4, pp. 13-16, 2011. keywords: {MnCO3;liquid phase precipitation;spherical particle;sodium hexametaphosphate} |