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A platform for research: civil engineering, architecture and urbanism
Ardealite harmless treatment process
The invention provides a phosphogypsum innocent treatment process which comprises the following steps: adding recycled water into a phosphogypsum raw material, and uniformly stirring to obtain phosphogypsum slurry; the ardealite slurry is pumped into an efficient separator through a slurry pump to be graded, organic matter, small and micro-particle slag and small and micro ardealite are removed, and high-quality ardealite with the high concentration is obtained; settling the removed organic matters, the small-particle slag and the ardealite solution, removing the organic matters on the upper layer, and returning the small-particle slag and the ardealite slurry on the lower layer to the phosphoric acid production acidolysis process; the method comprises the following steps: adding reuse water into high-quality phosphogypsum with relatively high concentration, stirring, carrying out plate-frame pressure filtration, further removing soluble impurities from the phosphogypsum, and improving the quality of the phosphogypsum to obtain qualified dihydrate phosphogypsum and a stream of acidic wastewater; calcining the dihydrate phosphogypsum to obtain building gypsum powder; related chemicals are added into the acidic wastewater, various ions are precipitated, the wastewater enters a membrane integration process, obtained concentrated water is returned to a phosphoric acid production acidolysis process, and obtained deionized water is reused as reuse water.
本发明提供一种磷石膏无害化处理工艺，将磷石膏原料加入回用水搅拌均匀，得到磷石膏浆料；将磷石膏浆液通过浆料泵打入高效分离器进行分级，去除有机质、小微颗粒矿渣及小微磷石膏，获得浓度较高的高品质磷石膏；去除的有机质、小微颗粒矿渣及磷石膏溶液进行沉降，去除上层有机质，下层小微颗粒矿渣及磷石膏浆料返回磷酸生产酸解工序；浓度较高的高品质磷石膏加入回用水搅拌后经板框压滤，磷石膏进一步去除可溶性杂质，提高磷石膏品质，得到合格二水磷石膏和一股酸性废水；将二水磷石膏进行煅烧，得到建筑石膏粉；酸性废水中加入相关药剂，沉淀多种离子后进入膜集成工艺，得到浓水返回磷酸生产酸解工艺，得到去离子水做回用水回用。
Ardealite harmless treatment process
The invention provides a phosphogypsum innocent treatment process which comprises the following steps: adding recycled water into a phosphogypsum raw material, and uniformly stirring to obtain phosphogypsum slurry; the ardealite slurry is pumped into an efficient separator through a slurry pump to be graded, organic matter, small and micro-particle slag and small and micro ardealite are removed, and high-quality ardealite with the high concentration is obtained; settling the removed organic matters, the small-particle slag and the ardealite solution, removing the organic matters on the upper layer, and returning the small-particle slag and the ardealite slurry on the lower layer to the phosphoric acid production acidolysis process; the method comprises the following steps: adding reuse water into high-quality phosphogypsum with relatively high concentration, stirring, carrying out plate-frame pressure filtration, further removing soluble impurities from the phosphogypsum, and improving the quality of the phosphogypsum to obtain qualified dihydrate phosphogypsum and a stream of acidic wastewater; calcining the dihydrate phosphogypsum to obtain building gypsum powder; related chemicals are added into the acidic wastewater, various ions are precipitated, the wastewater enters a membrane integration process, obtained concentrated water is returned to a phosphoric acid production acidolysis process, and obtained deionized water is reused as reuse water.
本发明提供一种磷石膏无害化处理工艺，将磷石膏原料加入回用水搅拌均匀，得到磷石膏浆料；将磷石膏浆液通过浆料泵打入高效分离器进行分级，去除有机质、小微颗粒矿渣及小微磷石膏，获得浓度较高的高品质磷石膏；去除的有机质、小微颗粒矿渣及磷石膏溶液进行沉降，去除上层有机质，下层小微颗粒矿渣及磷石膏浆料返回磷酸生产酸解工序；浓度较高的高品质磷石膏加入回用水搅拌后经板框压滤，磷石膏进一步去除可溶性杂质，提高磷石膏品质，得到合格二水磷石膏和一股酸性废水；将二水磷石膏进行煅烧，得到建筑石膏粉；酸性废水中加入相关药剂，沉淀多种离子后进入膜集成工艺，得到浓水返回磷酸生产酸解工艺，得到去离子水做回用水回用。
Ardealite harmless treatment process
一种磷石膏无害化处理工艺
LI XINHUI (author) / QIN JIAMENG (author) / ZHOU TIANMING (author) / DING BANGCHAO (author) / PENG WENBO (author) / FAN KEYIN (author) / DANG JIANBING (author)
2024-07-02
Patent
Electronic Resource
Chinese
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