公开(公告)号：US20130340571A1

公开(公告)日：2013-12-26

申请号：US13978112

申请日：2012-01-06

申请人： Jerome Agin ,  Nicolas Durupt ,  Antoine Greco ,  Fatima Hammy ,  Guillaume Laroche ,  Jacques Thiry

发明人： Jerome Agin ,  Nicolas Durupt ,  Antoine Greco ,  Fatima Hammy ,  Guillaume Laroche ,  Jacques Thiry

IPC分类号： C22B1/02 ,  C22B34/24 ,  C22B59/00 ,  C22B60/02

CPC分类号： C22B1/02 ,  C22B1/06 ,  C22B3/08 ,  C22B34/24 ,  C22B59/00 ,  C22B60/02 ,  C22B60/0204 ,  C22B60/0208 ,  Y02P10/216 ,  Y02P10/234

摘要： The main subject-matter of the present invention is a process for the dissolution of at least one element chosen from niobium and tantalum and at least one other element chosen from uranium and the rare earth elements, advantageously for the dissolution of niobium, tantalum, uranium and rare earth elements, present in an ore or an ore concentrate. Said process comprises: the roasting of a material, comprising said elements, which material is mixed, dry or/in the presence of water, with an acid roasting agent in order to obtain a calcine; said material consisting of said ore or concentrate or having been obtained from said ore or said concentrate and said acid roasting agent providing for roasting in a sulphate medium; and the dissolution in an aqueous solution of the calcine obtained in order to obtain a slurry, the liquid fraction of which includes iron, in the ferric state, at a concentration of at least 50 g/l, advantageously of at least 70 g/l and very advantageously of at least 120 g/l.

摘要翻译： 本发明的主要目的是一种溶解选自铌和钽的至少一种元素和选自铀和稀土元素的至少一种其它元素的方法，有利于溶解铌，钽，铀 和稀土元素，以矿石或矿石精矿存在。 所述方法包括：将含有所述元素的材料（该材料混合干燥或/在水存在下）与酸性焙烧剂焙烧以获得煅烧物; 所述材料由所述矿石或浓缩物组成或已经从所述矿石或所述浓缩物获得，所述酸性焙烧剂提供在硫酸盐介质中焙烧; 并且在所得到的煅烧水溶液中溶解以获得浆料，其液体部分包含铁，其铁含量为至少50g / l，有利地为至少70g / l 非常有利地为至少120g / l。

公开(公告)号：US06855256B2

公开(公告)日：2005-02-15

申请号：US10060277

申请日：2002-02-01

申请人： Jean-Francois Blais ,  Nathalie Meunier ,  Jean-Louis Sasseville ,  Rajeshwar D. Tyagi ,  Guy Mercier ,  Fatima Hammy

发明人： Jean-Francois Blais ,  Nathalie Meunier ,  Jean-Louis Sasseville ,  Rajeshwar D. Tyagi ,  Guy Mercier ,  Fatima Hammy

IPC分类号： C12N1/20 ,  C02F1/52 ,  C02F1/66 ,  C02F1/72 ,  C02F1/78 ,  C02F3/34 ,  C02F9/00 ,  C02F11/00 ,  C02F11/06 ,  C02F11/14 ,  C02F3/00

CPC分类号： C02F3/345 ,  C02F1/52 ,  C02F1/66 ,  C02F1/72 ,  C02F1/722 ,  C02F1/78 ,  C02F9/00 ,  C02F11/004 ,  C02F2101/20 ,  C02F2303/04

摘要： The invention relates to a hybrid biological and chemical method for decontaminating sludge containing heavy metals and pathogenic microorganisms, consisting of the following steps: the sludge is mixed with an acidic leaching solution in order to acidify the sludge with a pH which is low enough to solubilize the majority of the heavy metals and to destroy most of the pathogenic microorganisms but which is also high enough to minimize the solubilization of fertilizing elements; oxidation-reduction of more than +400 mv is maintained, liquid-solid separation occurs in order to obtain a solid fraction comprising decontaminated acidic sludge and a liquid fraction comprising heavy metals which are dissolved in a leaching solution; the sludge is neutralized: and neturalized decontaminated sludge is recovered, whereby the fertilizing elements contained therein, i.e. carbon, nitrogen and phosphorus, remain substantially unchanged in relation to the initially contaminated sludge.

摘要翻译： 本发明涉及一种用于净化含有重金属和病原微生物的污泥的混合生物和化学方法，包括以下步骤：将污泥与酸性浸出溶液混合，以便将pH值低至足以溶解的污泥酸化 大多数重金属并破坏大多数病原微生物，但也足够高以使施肥元素溶解最小化; 维持大于+ 400mv的氧化还原，发生液固分离，以获得包含净化的酸性污泥的固体馏分和包含溶解在浸出溶液中的重金属的液体馏分; 污泥被中和，并且回收净化的去污污泥，由此其中所含的施肥元素即碳，氮和磷相对于最初被污染的污泥基本上保持不变。