Experimental Research on Silicon Extraction from the Filter Residue in the Process of Titanium Extraction of Roasted Titanium Slag with Concentrated Sulfuric Acid AITranslate
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The process conditions were investigated of silicon extraction and calcium silicate preparation from the filter residue in the process of titanium extraction of roasted titanium slag with concentrated sulfuric acid. The main process steps include alkali-solution and calcification. The effects were investigated of NaOH-residue mass ratio, reaction temperature, reaction time and liquid-solid mass ratio on SiO2 extraction rate from the filter residue during alkali-solution. The optimum operating conditions of alkali-solution are obtained as follows： reaction temperature of 190 ℃ ,NaOH-residue mass ratio of 3 ： 1 ,liquid-solid mass ratio of 4.5 ： 1 and reaction time of 60 min. And SiO2 extraction rate is 74.09 % under the above conditions. The effects were investigated of reaction temperature and reaction time on calcification rate of sodium silicate solution during calcification. The optimum operating conditions of calcification are obtained as follows： reaction temperature of 100 ℃ and reaction time of 45 min. And the calcification rate of sodium silicate solution is 94% under the above conditions. Calcium silicate powder product contains 44.36% CaO and its main phase is CaSiO3 ,having loose and porous morphology and micron-level particle size.
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Chinese Library Classification Number:X758[环境科学与工程—环境工程]
Citation Information:
The process conditions were investigated of silicon extraction and calcium silicate preparation from the filter residue in the process of titanium extraction of roasted titanium slag with concentrated sulfuric acid. The main process steps include alkali-solution and calcification. The effects were investigated of NaOH-residue mass ratio, reaction temperature, reaction time and liquid-solid mass ratio on SiO2 extraction rate from the filter residue during alkali-solution. The optimum operating conditions of alkali-solution are obtained as follows： reaction temperature of 190 ℃ ,NaOH-residue mass ratio of 3 ： 1 ,liquid-solid mass ratio of 4.5 ： 1 and reaction time of 60 min. And SiO2 extraction rate is 74.09 % under the above conditions. The effects were investigated of reaction temperature and reaction time on calcification rate of sodium silicate solution during calcification. The optimum operating conditions of calcification are obtained as follows： reaction temperature of 100 ℃ and reaction time of 45 min. And the calcification rate of sodium silicate solution is 94% under the above conditions. Calcium silicate powder product contains 44.36% CaO and its main phase is CaSiO3 ,having loose and porous morphology and micron-level particle size.
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| GB/T 7714-2015 | [1] SUI Li-li, DI Yu-chun. Experimental Research on Silicon Extraction from the Filter Residue in the Process of Titanium Extraction of Roasted Titanium Slag with Concentrated Sulfuric Acid[J]. Rare Metals and Cemented Carbides, 2016(4): 28-31. |
| MLA | [1] SUI Li-li, and DI Yu-chun. "Experimental Research on Silicon Extraction from the Filter Residue in the Process of Titanium Extraction of Roasted Titanium Slag with Concentrated Sulfuric Acid." Rare Metals and Cemented Carbides, no. 4, 2016, pp. 28-31. |
| APA | [1] SUI Li-li, & DI Yu-chun. (2016). Experimental Research on Silicon Extraction from the Filter Residue in the Process of Titanium Extraction of Roasted Titanium Slag with Concentrated Sulfuric Acid. Rare Metals and Cemented Carbides(4), 28-31. |
| IEEE | [1] SUI Li-li and DI Yu-chun, "Experimental Research on Silicon Extraction from the Filter Residue in the Process of Titanium Extraction of Roasted Titanium Slag with Concentrated Sulfuric Acid," Rare Metals and Cemented Carbides, no. 4, pp. 28-31, 2016. keywords: {titanium slag;filter residue;alkali-solution;calcification;silicon dioxide;calcium silicate} |