公开(公告)号：US20240123478A1

公开(公告)日：2024-04-18

申请号：US18286586

申请日：2022-04-11

申请人： Companhia Brasileira De Alumínio ,  Universidade Federal De Viçosa – UFV

发明人： Christian Fonseca DE ANDRADE ,  Ivo Ribeiro DA SILVA ,  Roberto SENO JUNIOR ,  Nilson Gonçalves BIGOGNO ,  Camila Botarro MOURA

IPC分类号： B09B3/21

CPC分类号： B09B3/21 ,  B09B2101/90

摘要： The present invention relates to processes for recovering areas degraded by mining by means of soil treatment. In this context, the present invention provides a method for reusing ore concentrate waste, comprising the steps of (i) generating a solid or pasty residue from ore concentration, (ii) enriching the residue with at least two organic binders and a fertilizer to obtain an enriched/improved residue, (iii) depositing the enriched residue on the mined ground to form an enriched subsoil and (iv) depositing a topsoil layer on the enriched subsoil.

公开(公告)号：US20220064758A1

公开(公告)日：2022-03-03

申请号：US17418760

申请日：2019-12-26

申请人： COMPANHIA BRASILEIRA DE ALUMÍNIO

发明人： Roberto Seno Junior

IPC分类号： C22B21/00 ,  C22B7/00 ,  B29B17/02 ,  B33Y40/00 ,  B22F10/73

摘要： A process for the recovery of aluminum, or recycling process, is described, which is based on separating the aluminum contained in aseptic carton packs (1), flexible packs (2) and residual aluminum alloy powder (3) used in manufacturing additive, through the selective dissolution of aluminum in a solution known as Bayer liquor and/or caustic soda, with sodium aluminate (liquid) and hydrogen gas (H2, gaseous) products. Both products can be used in an alumina refinery, the sodium aluminate is used for the production of aluminum hydroxide and the hydrogen can be used as fuel for boilers, furnaces or similar.