玻璃製程之工業級廢棄硝酸鉀純化方法建立及效果分析

本實驗研究為廢棄物硝酸鉀的純化，試驗原理利用硝酸鉀內鉀鈉結晶溫度上不同，加上客製化多點溫控設備控制其結晶使硝酸鉀內鈉離子濃度降低，進而獲得高純度硝酸鉀供其後續利用，在玻璃應用方面主要是應用於化學強化部分，使玻璃增加其耐壓力及耐碰撞力，經過化學強化處理後的玻璃在後續的加工過程有著更好的基礎。玻璃硬化製程工業級廢棄硝酸鉀純化方法:其步驟如下: 1)在純化加熱爐中加入粉末狀的廢棄硝酸鉀; 2)將其放入後加熱使其形成熔融液體; 3)將熔融液體採取恆溫處理一段時間; 4)一段時間後，採取連續性降溫處理使其達到分離目標; 5)分離後，將低純度廢棄硝酸鉀洩漏出來，欲回收之高純度硝酸鉀結晶固體使其繼續利用;廢棄硝酸鉀純化後，其純度約可由0.6％左右降至0.22％左右，回收率約75％左右，其可供玻璃化學強化利用，藉由此循環純化作用，可使化學強化玻璃製程中有效降低生產成本，而本實驗研究技術過程方法容易，操作簡單方便，易於推廣實施利用。

關鍵字

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

並列摘要

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.

並列關鍵字

Potassium nitrate ； physical strengthening ； chemicallystrengthening ； inductively coupled plasma atomic emission spectrometer ； purification furnace

參考文獻

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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

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