-
1.发明公开Verfahren zur Abtrennung von Schwermetallionen aus Rohphosphat 失效Verfahren zur Abtrennung von Schwermetallionen aus Rohphosphat。
公开(公告)号：EP0099096A1
公开(公告)日：1984-01-25
申请号：EP83106783.0
申请日：1983-07-11
CPC分类号： C01B25/01
摘要： Gegenstand der Erfindung ist ein Verfahren zur Abtrennung von Cadmium oder Quecksilber aus Rohphosphat, bei welchem das Rohphosphat mit Halogenen, Halogenwasserstoffen oder Halogenverbindungen bei 400 -1100°C und bei 0,001 bis 50 bar behandelt wird.
摘要翻译： 一种从粗磷酸盐分离镉或汞的方法，其中在400-1100℃和0.001至50巴下用卤素，卤化氢或卤素化合物处理粗磷酸盐。
-
公开(公告)号：EP4085030A1
公开(公告)日：2022-11-09
申请号：EP20830000.4
申请日：2020-11-27
申请人： École Supérieure des Industries du Textile Et de l'Habillement (ESITH) , Universite Hassan II de Casablanca (UH2C) , Universite Mohamed VI Polytechnique (UM6P)
-
-
-
公开(公告)号：EP3475220B1
公开(公告)日：2023-09-20
申请号：EP17740478.7
申请日：2017-06-23
-
公开(公告)号：EP3154920B1
公开(公告)日：2020-06-03
申请号：EP15730104.5
申请日：2015-06-11
申请人： Outotec (Finland) Oy , BRD, vertr. d. den Bundesminister für Wirtschaft & Energie, dieser vertr. d. den Präsidenten der Bundesanst. f. Materialforsch. & prüfung (BAM)
发明人： STEMANN, Jan , ADAM, Christian , HERMANN, Ludwig
-
公开(公告)号：EP3994111A1
公开(公告)日：2022-05-11
申请号：EP20834784.9
申请日：2020-07-03
-
公开(公告)号：EP3778535A1
公开(公告)日：2021-02-17
申请号：EP19782443.6
申请日：2019-03-21
申请人： Kingenta Ecological Engineering Group Co., Ltd. , Kingenta Norsterra Chemical Co., Ltd. , Yunnan Zhongzheng Chemical Industry Co., Ltd.
发明人： HU, Zhaoping , LIU, Yongxiu , ZHENG, Jianguo , WANG, Botong , LI, Chengzhi , YU, Nanshu , GUO, Zongduan , HU, Shanming
摘要： The present invention relates to a polyphosphoric acid calcium magnesium fertilizer prepared by using phosphoric acid and phosphorus tailings as raw materials and a preparation method therefor. The polyphosphoric acid calcium magnesium fertilizer is prepared by using phosphorus tailings and phosphoric acid as raw materials. Based on P 2 O 5 , MgO and CaO, in the polyphosphoric acid calcium magnesium fertilizer: total phosphorus is 50-68%, effective phosphorus is 47-66%, total magnesium is 5-18%, effective magnesium is 4-15%, total calcium is 11-20%, effective calcium is 10-18%, and all are expressed in mass percentage. Based on P 2 O 5 , the polymerization rate of the polyphosphoric acid calcium magnesium fertilizer is ≥50%. The present invention also provides a preparation method for the fertilizer. The phosphorus in the product prepared by the invention has sustained-release properties. When the product is applied to the soil, the phosphorus contained therein does not settle quickly, but instead slowly releases the orthophosphate as required by the crop. The action of polyphosphoric acid, magnesium and calcium are not readily leached by water, and thus the fertilizer is well suited for crops requiring large amounts of calcium and magnesium.
-
公开(公告)号：EP0041504B1
公开(公告)日：1984-06-13
申请号：EP80901660.3
申请日：1980-09-08
IPC分类号： C05B13/02
CPC分类号： C05B13/02
摘要： Apatite is conventionally made into a fertilizer material by treatment with a strong acid, requiring capital-intensive industry. Hydroxyapatite is treated above 1100C with alkali but world reserves are problematic. The invention treats apatite at 900C with sodium aluminosilicate/carbonate and siliceous material in quantities to keep the composition in terms of CaO, SiO2, Na2O and P2O5 in or near the ternary system Ca2SiO4 - Ca3(PO4)2 - CaNaPO4.
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.008 秒)
