Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for activating red mud to solidify soluble phosphorus and fluorine in phosphogypsum
The invention discloses a method for activating red mud to solidify soluble phosphorus and fluorine in phosphogypsum. The method comprises the following steps: grinding red mud, then adding alkali for activation or adding acid for activation to obtain activated red mud, then adding the activated red mud into phosphogypsum subjected to slurrying treatment, adjusting the pH value of slurry to 6-9 in a stirring state, carrying out a curing reaction, and filtering after the reaction is finished, the addition amount of the activated red mud is 3-30% of the mass of the phosphogypsum. According to the method, the coupling solidification effect of iron, aluminum, calcium, silicon, titanium and rare earth elements in the red mud on soluble P and F elements in the ardealite is ingeniously utilized, so that the ardealite is converted into general solid waste from harmful solid waste; the method achieves the technical purpose of treating waste with waste, has the advantages of being simple in process, good in curing effect, low in treatment cost and the like, and is suitable for large-scale industrial harmless treatment of ardealite.
本发明公开了一种活化赤泥固化磷石膏中可溶性磷和氟的方法。该方法经赤泥研磨后再加碱活化或加酸活化，得活化赤泥，然后将活化赤泥加入到经浆化处理的磷石膏中，于搅拌状态下调整浆料pH为6～9进行固化反应，反应结束后过滤即得；所述活化赤泥的添加量为磷石膏质量的3～30％。该方法巧妙的利用了赤泥中铁、铝、钙、硅、钛及稀土元素对于磷石膏中可溶性P和F元素的耦合固化作用，从而将磷石膏从有害固废转化为一般固废；该方法实现了以废治废的技术目的，具有工艺简单、固化效果好和治理成本低等优点，适合磷石膏大规模工业化的无害化处理。
Method for activating red mud to solidify soluble phosphorus and fluorine in phosphogypsum
The invention discloses a method for activating red mud to solidify soluble phosphorus and fluorine in phosphogypsum. The method comprises the following steps: grinding red mud, then adding alkali for activation or adding acid for activation to obtain activated red mud, then adding the activated red mud into phosphogypsum subjected to slurrying treatment, adjusting the pH value of slurry to 6-9 in a stirring state, carrying out a curing reaction, and filtering after the reaction is finished, the addition amount of the activated red mud is 3-30% of the mass of the phosphogypsum. According to the method, the coupling solidification effect of iron, aluminum, calcium, silicon, titanium and rare earth elements in the red mud on soluble P and F elements in the ardealite is ingeniously utilized, so that the ardealite is converted into general solid waste from harmful solid waste; the method achieves the technical purpose of treating waste with waste, has the advantages of being simple in process, good in curing effect, low in treatment cost and the like, and is suitable for large-scale industrial harmless treatment of ardealite.
本发明公开了一种活化赤泥固化磷石膏中可溶性磷和氟的方法。该方法经赤泥研磨后再加碱活化或加酸活化，得活化赤泥，然后将活化赤泥加入到经浆化处理的磷石膏中，于搅拌状态下调整浆料pH为6～9进行固化反应，反应结束后过滤即得；所述活化赤泥的添加量为磷石膏质量的3～30％。该方法巧妙的利用了赤泥中铁、铝、钙、硅、钛及稀土元素对于磷石膏中可溶性P和F元素的耦合固化作用，从而将磷石膏从有害固废转化为一般固废；该方法实现了以废治废的技术目的，具有工艺简单、固化效果好和治理成本低等优点，适合磷石膏大规模工业化的无害化处理。
Method for activating red mud to solidify soluble phosphorus and fluorine in phosphogypsum
一种活化赤泥固化磷石膏中可溶性磷和氟的方法
WANG YI (Autor:in) / WANG XUEWEN (Autor:in) / GU GUOHUA (Autor:in) / GUO KAIXIN (Autor:in)
24.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024