公开(公告)号：US20240150868A1

公开(公告)日：2024-05-09

申请号：US18550012

申请日：2022-03-10

申请人： ECOTEC GESTIONE IMPIANTI S.R.L

发明人： Aldo IMERITO ,  Massimo PISU ,  Mario RAGONA ,  Pierandrea AZARA ,  Francesca MALAFRONTE ,  Arianna CASULA ,  Anna MAMELI

IPC分类号： C22B3/00 ,  C22B1/02 ,  C22B7/00 ,  C22B11/00

CPC分类号： C22B13/045 ,  C22B1/02 ,  C22B7/007 ,  C22B11/044

摘要： A method for the treatment of jarosite and other residues of the zinc and lead production industry, including the following steps: thermal treatment of the residues, at a temperature between 500° C. and 700° C., to obtain the evaporation of the imbibition water and the demolition of the jarosite molecule, resulting in the development of SO3 and in the removal of OH− groups to give additional water in the gaseous phase, and resulting in the obtainment, from the recondensation of these components, of an aqueous solution of diluted sulfuric acid, and with the simultaneous formation of a solid fraction composed of iron(III) oxide, zinc, lead, silver, copper sulphates and other minor elements; and then steps for acid leaching, a refining treatment; and purification to obtain solubilization of iron(III); separation of the solubilized iron(III) from the silica, which remains insolubilized; precipitation of iron(III) to obtain iron oxide pigment.

公开(公告)号：US20190309392A1

公开(公告)日：2019-10-10

申请号：US16340575

申请日：2017-10-03

申请人： ECOTEC GESTIONE IMPIANTI S.R.L.

发明人： Aldo IMERITO

IPC分类号： C22B59/00 ,  C22B1/02 ,  C22B3/06 ,  C22B3/38 ,  C22B9/02 ,  C22B9/10 ,  C22B7/04 ,  C22B7/00

摘要： Multistage process for the preparation of a concentrate of metals, rare metals and rare earth metals from residues of alumina production by Bayer process (red mud), or from materials with a chemical composition similar to red mud, and multistage process for separating the elements of interest, transforming them into single products to be re-used in the Bayer process and/or sending them to the respective reference markets.The sole FIGURE appended shows the simplified block diagram of the invention, in terms of its most extensive definition.

公开(公告)号：US20160130154A1

公开(公告)日：2016-05-12

申请号：US14900573

申请日：2014-06-25

申请人： ECOTEC GESTIONE IMPIANTI S.R.L. ,  ECOTEC RISORSE S.R.L.

发明人： Aldo IMERITO ,  Riccardo ORRU' ,  Mario RAGONA ,  Massimo PISU ,  Carla DENOTTI

IPC分类号： C01F7/56 ,  C01D3/04 ,  C01B33/107 ,  C01G23/02 ,  C01G15/00 ,  C01G49/10

CPC分类号： C01F7/56 ,  C01B9/02 ,  C01B33/10721 ,  C01D3/04 ,  C01F7/066 ,  C01G15/00 ,  C01G23/022 ,  C01G23/024 ,  C01G49/10 ,  C01P2006/80 ,  C22B7/002 ,  Y02P10/212

摘要： The subject of the invention is a process for the extraction, from bauxite, from red mud resulting from the processing of bauxite, and from chemically similar materials, of products of industrial interest, like sodium, iron, gallium, aluminum, titanium and silicon, separated from each other in chloride form.The process involves the melting of the to be treated material and the blowing in the melted bath of chlorine or chlorine in situ generating compounds, and the controlled cooling of the gaseous flow exiting from the melted bath for the selective condensation of chlorides of the elements of interest.The FIGURE shows a block diagram of a particular embodiment wherein the melting is carried out in a transferred arc plasma reactor.

摘要翻译： 本发明的主题是从铝土矿从由铝土矿的加工产生的红泥和从化学上类似的材料中获得工业感兴趣的产品如钠，铁，镓，铝，钛和硅的方法， 以氯化物形式彼此分离。 该方法涉及待处理材料的熔化和在熔融的氯或氯原位产生化合物的熔池中的吹送，以及从熔融浴中排出的气流的受控冷却，以选择性地冷凝元素的氯化物 利益。 该图示出了特定实施例的框图，其中熔化在转移的电弧等离子体反应器中进行。