Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Phosphogypsum one-tower cascade separation impurity removal purification process
The invention discloses an ardealite one-tower gradient separation impurity removal and purification process which comprises the following steps: respectively adding ardealite, water, a collecting agent and a flotation agent into a stirring barrel for dilution and stirring, firstly, precipitating silicon slag and acid-insoluble substances at the bottom of the stirring barrel under the action of rotation and gravity, extracting the silicon slag and the acid-insoluble substances, and naturally draining the silicon slag and the acid-insoluble substances; the organic matter is stripped in a flotation mode, the organic matter with the liquid content ratio being 90% or above overflows out of the top of a flotation tower and is dehydrated to 30% through a horizontal screw machine, and extraction of the organic matter is achieved; the material discharged from the bottom of the flotation tower is selected phosphogypsum, and the selected phosphogypsum is dehydrated to 12% of attached water by a filter press, so that the purification of the phosphogypsum is realized; the method has the advantages that the purification process route is reasonable in design, the process is simple, the extraction efficiency is high, and the investment cost of equipment is greatly reduced.
本发明公开了磷石膏一塔化梯级分离除杂提纯工艺，将磷石膏、水、捕收剂和浮选剂分别加入到搅拌桶中稀释并搅拌，首先在旋转和重力的作用下，将硅渣及酸不溶物沉淀在搅拌桶的底部，提取硅渣及酸不溶物并自然虑干；接着采用浮选的方式剥离有机质，该含液比90%以上的有机质从浮选塔顶部溢流出，利用卧螺机脱水至30%，实现有机质的提取；从浮选塔底部排出的即为精选磷石膏，该精选磷石膏用压滤机脱水至12%的附着水，实现磷石膏的提纯；脱除的水集中输送至水处理后回收循环利用，本发明优点是：本提纯工艺路线设计合理，工艺简单，提取效率高，大大降低了设备的投入成本。
Phosphogypsum one-tower cascade separation impurity removal purification process
The invention discloses an ardealite one-tower gradient separation impurity removal and purification process which comprises the following steps: respectively adding ardealite, water, a collecting agent and a flotation agent into a stirring barrel for dilution and stirring, firstly, precipitating silicon slag and acid-insoluble substances at the bottom of the stirring barrel under the action of rotation and gravity, extracting the silicon slag and the acid-insoluble substances, and naturally draining the silicon slag and the acid-insoluble substances; the organic matter is stripped in a flotation mode, the organic matter with the liquid content ratio being 90% or above overflows out of the top of a flotation tower and is dehydrated to 30% through a horizontal screw machine, and extraction of the organic matter is achieved; the material discharged from the bottom of the flotation tower is selected phosphogypsum, and the selected phosphogypsum is dehydrated to 12% of attached water by a filter press, so that the purification of the phosphogypsum is realized; the method has the advantages that the purification process route is reasonable in design, the process is simple, the extraction efficiency is high, and the investment cost of equipment is greatly reduced.
本发明公开了磷石膏一塔化梯级分离除杂提纯工艺，将磷石膏、水、捕收剂和浮选剂分别加入到搅拌桶中稀释并搅拌，首先在旋转和重力的作用下，将硅渣及酸不溶物沉淀在搅拌桶的底部，提取硅渣及酸不溶物并自然虑干；接着采用浮选的方式剥离有机质，该含液比90%以上的有机质从浮选塔顶部溢流出，利用卧螺机脱水至30%，实现有机质的提取；从浮选塔底部排出的即为精选磷石膏，该精选磷石膏用压滤机脱水至12%的附着水，实现磷石膏的提纯；脱除的水集中输送至水处理后回收循环利用，本发明优点是：本提纯工艺路线设计合理，工艺简单，提取效率高，大大降低了设备的投入成本。
Phosphogypsum one-tower cascade separation impurity removal purification process
磷石膏一塔化梯级分离除杂提纯工艺
YU RUI (Autor:in) / YE GUOQING (Autor:in) / SU YING (Autor:in) / ZHANG LIE (Autor:in) / JIAN SHOUWEI (Autor:in) / YU QIAN (Autor:in) / LU LEI (Autor:in) / ZHANG GENYUAN (Autor:in) / YU ZHANGCHENG (Autor:in)
10.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
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
/
C05D
INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C
,
Anorganische, nicht von den Unterklassen C05B, C05C umfasste Düngemittel
An improved process for the purification of phosphogypsum
| British Library Online Contents | 1996
An improved process for the purification of phosphogypsum
| Online Contents | 1996
| Europäisches Patentamt | 2024