玻璃製程之工業級廢棄硝酸鉀純化方法建立及效果分析

蔡宗皓

doi:10.6827/NFU.2015.00034

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玻璃製程之工業級廢棄硝酸鉀純化方法建立及效果分析

Establishment and Efficacy of the Purification Method of Waste Industrial-Grade Potassium Nitrate as Glass Manufacturing Process

蔡宗皓 , Masters　　Advisor：楊閔惠　　

繁體中文 DOI： 10.6827/NFU.2015.00034

硝酸鉀；物理強化；化學強化；感應耦合電漿原子發射光譜儀；純化爐； Potassium nitrate ； physical strengthening ； chemicallystrengthening ； inductively coupled plasma atomic emission spectrometer ； purification furnace

Abstract │ Reference (53) │ Altmetrics

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In this study, the development and efficacy of the purification new method of waste potassium nitrate were by reducing the sodium ion concentration in the waste to enhance the potassium nitrate purity. Potassium nitrate was applied in chemically strength. It allows the glass to increase resistance to impact forces.
  The purification method of waste potassium nitrate included: 1) The samples were added custom stainless steel high-temperature furnace; 2) The samples were heated and melted into a liquid; 3) Molten liquid was used for cooling and processing thermostat. In the final, the waste potassium nitrate were purified and separated. After purifying, the potassium nitrate was still useful.
  After this experiment operation, the sodium ion concentration of waste potassium nitrate was reduced from 0.6％ to 0.22％ and the average waste potassium nitrate recoveries ratio was 75％. Thus, the purified potassium nitrate could be recycled to use again. Therefore, because of there were didn't have to change new batch of potassium nitrate in every each time. Chemically strengthened glass manufacturing process was effectively reducing production costs.

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[11] Bradshaw, R.W., Siegel, N.P., 2008, Molten nitrate salt development for thermal energy storage in parabolic trough solar power systems. In: ASME proceedings of energy sustainability.
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[12] Rogers, D. J., Janz, G. J., 1982, Melting-crystallization and premelting properties of sodium nitrate–potassium nitrate: enthalpies and heat capacities. J Chem Eng Data, 27:424–428.
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[13] Kearney, D., et al., 2003, Assessment of a molten salt heat transfer fluid in a parabolic trough solar field. J Sol Energy Eng, 125:170-176.
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[14] Peng, Q., et al., 2010, The preparation and properties of multicomponent molten salts. Appl Energy, 87:2812–2817.
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[21] Takahashi, Y., Sakamoto, R., and Kamimoto, M., 1988, Heat capacities and latent heat of LiNO3, NaNO3 and KNO3. Int J Thermophys, 1081–1090.
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