Zinc recovery from the water-jacket furnace flue dusts by leaching and electrowinning in a SEC-CCS cell

Hydrometallurgical process for zinc recovery from electric arc furnace dust (EAFD). Part II: Downstream processing and zinc recovery by electrowinning

“…The process is made possible by the high overpotential of hydrogen formation on the layer of zinc covering the aluminium cathode. To achieve this overpotential condition the temperature of the electrolyte should not be high, and the electrolyte must be quasi pure [17]. It requires an electrolyte with a composition of 50-90 g/L Zn 2+ and 120-200 g/L H 2 SO 4 , while it is usually carried out at high current densities in the range 400-700 A/m 2 [18].…”

Separation of ZnO from the Stainless Steelmaking Dust and Graphite Mixture by Microwave Irradiation

“…Therefore the removal of zinc oxide from the dust makes it possible to recycle in stainless steel mill. In recent decades, some methods have been developed to process ZnO-bearing dust [1][2][3][4][5]. The methods can be classified into three groups: physical method, wet process (acid process and alkaline process), pyrogenic process.…”

Tendências E Desafios Na Aplicação De Tecnologias Avançadas Para O Tratamento De Efluentes Industriais Não Biodegradáveis

“…Os resíduos siderúrgicos têm sido utilizados como adsorventes para tratar efluentes contaminados por fenóis (JAIN;BHATNAGAR, 2002;BHATNAGAR, 2007), corantes (JAIN et al, 2003BHATNAGAR;JAIN, 2005;AMORIM, 2007;GUP-TA;SUHAS, 2009), emulsão oleosa (ANDRADE et al, 2012), metais (DELGADO;PÉREZ;LÓPEZ, 1996;DAS et al, 2007;YEHIA et al 2008) e pesticidas (GUPTA et al, 2006. Outras aplicações desses resíduos são descritas na literatura, como a recuperação de metais, tais como Zn, Pb e Fe FATMA, 2005;YEHIA et al, 2008;MUKONGO et al, 2009), o uso de resíduo siderúrgico para produção de pigmentos (SHEN et al, 2010) e cimentos (KONSTA-GDOUTOS; SHAH, 2003) e em reações catalíticas (AMORIM et al, 2012;AMORIM et al, 2013a). , r. b. p.; frade, p. r.; amorim, c. c.; leão, m. m…”