公开(公告)号：US20230332266A1

公开(公告)日：2023-10-19

申请号：US18044727

申请日：2021-09-09

申请人： MONTANUNIVERSITÄT LEOBEN

发明人： Jürgen ANTREKOWITSCH ,  Stefan STEINLECHNER ,  Michael AUER

IPC分类号： C22B7/02 ,  C22B7/00 ,  C22B19/38 ,  C22B1/24

CPC分类号： C22B7/001 ,  C22B1/2406 ,  C22B7/02 ,  C22B19/38

摘要： A method of manufacturing a valuable material product from an industrial dust is described. The method comprises: i) providing the industrial dust which comprises at least one valuable material and a first concentration of volatile constituents to a heating device with an operation temperature of 600° C. or more, ii) processing the industrial dust by the heating device, wherein processing comprises: iia) heating the industrial dust with a rate of 20° C./min or more, iib) thermally treating the industrial dust by the heating device with a treating temperature in the range of 900° C. to 1200° C., in particular in the range of 1000° C. to 1100° C., for 30 minutes or more, and iic) controlling and/or regulating the oxidizing conditions during processing, wherein processing comprises: at least partially removing the volatile constituents from the industrial dust, and iii) providing the valuable material product. Furthermore, the processed valuable material product is described.

公开(公告)号：US20200032371A1

公开(公告)日：2020-01-30

申请号：US16603157

申请日：2017-04-06

申请人： MONTANUNIVERSITÄT LEOBEN

发明人： Fritz LUDEWIG ,  Stefan STEINLECHNER ,  Jürgen ANTREKOWITSCH

IPC分类号： C22B3/00 ,  C22B3/08 ,  C01B7/19

摘要： Embodiments of the invention relate to a process for removing fluoride from a solution or suspension containing zinc, in particular a solution of zinc sulfate, a defluoridated solution of zinc sulfate obtainable by such a process, its use as well as processes for producing zinc and hydrogen fluoride or hydrofluoric acid. The process for removing fluoride comprises (i) providing a solution or suspension A containing zinc, wherein the solution or suspension A containing zinc further contains fluoride ions; (ii) adding a solution B containing a dissolved salt of a rare earth element to the solution or suspension A containing zinc, wherein a solid comprising a rare earth element fluoride and a solution C containing zinc are formed; and (iii) separating the solid from the solution C containing zinc, wherein the solution C containing zinc has a lower concentration of fluoride ions than the solution or suspension A containing zinc.