Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for decomposing phosphogypsum at low temperature
The invention provides a method for decomposing phosphogypsum at low temperature, and belongs to the technical field of phosphorus chemical treatment. According to the specific scheme, the method comprises the following steps: pretreating phosphogypsum in a metal ion solution, putting the dried phosphogypsum into a tubular furnace, introducing CO in a nitrogen atmosphere, reducing the phosphogypsum into CaS at 500-900 DEG C, and then switching oxygen to oxidize the CaS into CaO so as to realize low-temperature decomposition of the phosphogypsum. The method has the advantages of low decomposition temperature, wide application prospect and the like.
本发明专利提供了一种低温分解磷石膏的方法，属于磷化工处理技术领域。具体方案为：将磷石膏在金属离子溶液中预处理，把干燥后的磷石膏置入管式炉中，在氮气氛围下通入CO，于500~900 oC下将磷石膏还原为CaS，再切换氧气将CaS氧化成CaO，实现磷石膏的低温分解。本方法具有分解温度低、广阔的应用前景等优势。
Method for decomposing phosphogypsum at low temperature
The invention provides a method for decomposing phosphogypsum at low temperature, and belongs to the technical field of phosphorus chemical treatment. According to the specific scheme, the method comprises the following steps: pretreating phosphogypsum in a metal ion solution, putting the dried phosphogypsum into a tubular furnace, introducing CO in a nitrogen atmosphere, reducing the phosphogypsum into CaS at 500-900 DEG C, and then switching oxygen to oxidize the CaS into CaO so as to realize low-temperature decomposition of the phosphogypsum. The method has the advantages of low decomposition temperature, wide application prospect and the like.
本发明专利提供了一种低温分解磷石膏的方法，属于磷化工处理技术领域。具体方案为：将磷石膏在金属离子溶液中预处理，把干燥后的磷石膏置入管式炉中，在氮气氛围下通入CO，于500~900 oC下将磷石膏还原为CaS，再切换氧气将CaS氧化成CaO，实现磷石膏的低温分解。本方法具有分解温度低、广阔的应用前景等优势。
Method for decomposing phosphogypsum at low temperature
一种低温分解磷石膏的方法
DENG QIULIN (Autor:in) / LUO QIN (Autor:in) / GUO LIQING (Autor:in) / HUANG XIAOFENG (Autor:in) / DONG FAQIN (Autor:in) / TAN HONGBIN (Autor:in) / LEI QIN (Autor:in)
25.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
C04B
Kalk
,
LIME
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