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A platform for research: civil engineering, architecture and urbanism
Phosphogypsum and harmless and resourceful treatment method and application thereof
The invention relates to ardealite and a harmless and resourceful treatment method and application thereof, and the method comprises the following steps: taking an ardealite raw material, and carrying out ball milling and sieving to obtain ardealite A; calcining the ardealite A at 200-240 DEG C for the first time to obtain ardealite B; calcining the ardealite B at 120-140 DEG C for the second time to obtain ardealite C; adding a neutralizer into the phosphogypsum C to obtain phosphogypsum D; according to the method, the content of soluble phosphorus and soluble fluorine is effectively reduced through primary calcination, the content of calcium sulfate hemihydrate in the phosphogypsum is increased through secondary calcination, harmless treatment of the phosphogypsum is achieved, the gelling characteristic of the phosphogypsum is stimulated, the corrosivity of the phosphogypsum is reduced through neutralization of the neutralizing agent, and recycling of the phosphogypsum is achieved.
本发明涉及一种磷石膏及其无害化及资源化处理方法和应用，包括以下步骤：取磷石膏原料进行球磨过筛，得到磷石膏A；磷石膏A在200～240℃下进行第一次煅烧，得到磷石膏B；磷石膏B在120～140℃下进行第二次煅烧，得到磷石膏C；向磷石膏C中掺入中和剂，得到磷石膏D。本发明通过第一次煅烧有效降低了可溶性磷和可溶性氟的含量，再通过第二次煅烧增加磷石膏中半水硫酸钙的含量，实现磷石膏的无害化处理并激发磷石膏的胶凝特性，用中和剂中和，降低了磷石膏的腐蚀性，实现磷石膏的资源化。
Phosphogypsum and harmless and resourceful treatment method and application thereof
The invention relates to ardealite and a harmless and resourceful treatment method and application thereof, and the method comprises the following steps: taking an ardealite raw material, and carrying out ball milling and sieving to obtain ardealite A; calcining the ardealite A at 200-240 DEG C for the first time to obtain ardealite B; calcining the ardealite B at 120-140 DEG C for the second time to obtain ardealite C; adding a neutralizer into the phosphogypsum C to obtain phosphogypsum D; according to the method, the content of soluble phosphorus and soluble fluorine is effectively reduced through primary calcination, the content of calcium sulfate hemihydrate in the phosphogypsum is increased through secondary calcination, harmless treatment of the phosphogypsum is achieved, the gelling characteristic of the phosphogypsum is stimulated, the corrosivity of the phosphogypsum is reduced through neutralization of the neutralizing agent, and recycling of the phosphogypsum is achieved.
本发明涉及一种磷石膏及其无害化及资源化处理方法和应用，包括以下步骤：取磷石膏原料进行球磨过筛，得到磷石膏A；磷石膏A在200～240℃下进行第一次煅烧，得到磷石膏B；磷石膏B在120～140℃下进行第二次煅烧，得到磷石膏C；向磷石膏C中掺入中和剂，得到磷石膏D。本发明通过第一次煅烧有效降低了可溶性磷和可溶性氟的含量，再通过第二次煅烧增加磷石膏中半水硫酸钙的含量，实现磷石膏的无害化处理并激发磷石膏的胶凝特性，用中和剂中和，降低了磷石膏的腐蚀性，实现磷石膏的资源化。
Phosphogypsum and harmless and resourceful treatment method and application thereof
一种磷石膏及其无害化及资源化处理方法和应用
HUANG TINGTING (author) / WANG LIU (author) / HE HAOXIANG (author) / LUO RONG (author) / ZHANG ZEYU (author) / LIU ZHIHAO (author) / MA HAOYU (author) / QIN XIANTAO (author) / HUANG QING (author)
2024-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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