本文關(guān)鍵詞： 粉煤灰 硫酸 硫酸鋁 浸取 固液比 顆粒尺寸　出處：《Transactions of Nonferrous Metals Society of China》2017年09期 　論文類型：期刊論文

【摘要】：目前從熱電廠粉煤灰中提取有價(jià)金屬的方法存在一定的局限性。研究用硫酸從熱電廠粉煤灰中提取鋁制備高純硫酸鋁(99.0%)。以硫酸為萃取劑分別提取Talcher熱電站和Vedanta鋁業(yè)有限公司的粉煤灰中的鋁制備硫酸鋁。采用X射線衍射譜、傅里葉紅外光譜和熱重分析等手段對硫酸鋁產(chǎn)品進(jìn)行表征,用電感耦合等離子-光學(xué)發(fā)射光譜測量硫酸鋁產(chǎn)品的純度。結(jié)果表明,粉煤灰的浸出率取決于粉煤灰與硫酸的固液比以及粉煤灰的顆粒尺寸。物化分析結(jié)果表明,所得產(chǎn)品為Al_2(SO_4)_3·18H_2O,其鐵含量較低,僅為0.08%(質(zhì)量分?jǐn)?shù))。
[Abstract]:At present, the method of extracting valuable metal from fly ash of thermal power plant has some limitations. The preparation of high purity aluminum sulfate from fly ash from thermal power plant by sulfuric acid is studied. Aluminum sulfate was prepared from fly ash of Talcher thermal power station and Vedanta aluminum industry co., Ltd., using sulfuric acid as extractant. X-ray diffraction spectra were used. The products of aluminum sulfate were characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis. The purity of aluminum sulfate products was measured by inductively coupled plasma-optical emission spectroscopy. The leaching rate of fly ash depends on the ratio of fly ash to sulfuric acid and the particle size of fly ash. The results of physicochemical analysis show that the obtained product is Al_2(SO_4)_3 路18H _ 2O. Its iron content is relatively low, only 0.08% (mass fraction).
【作者單位】： Environment
【基金】：Funding from CSIR, New Delhi, under network project (ESC.205)
【分類號】：TQ133.1
【正文快照】： 1 IntroductionThermal power plant fly ash linked to variousenvironmental problems,particularly its accumulationposed a great threat to air,water and soil pollution.Besides bulk utilization like the brick,cement andnon-cement uses,high-value utilization o

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