2008
DOI: 10.1590/s0370-44672008000300011
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Ensaios estáticos e cinéticos para a prevenção da geração de drenagem ácida de minas da mineração de carvão com escória de aciaria

Abstract: The Acid Mine Drainage (AMD) ResumoA Drenagem Ácida de Mina (DAM) é proveniente da oxidação natural de materiais sulfetados quando em contato com o ar e com a água. Esse problema atinge, em alto grau, a mineração de carvão. Uma das tecnologias de prevenção da geração da DAM consiste no método de aditivos alcalinos. Assim, o objetivo do presente trabalho foi avaliar, em estudos de laboratório, o controle da DAM pela mistura de um rejeito de carvão com uma escó-ria do setor siderúrgico. O trabalho incluiu a c… Show more

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Cited by 7 publications
(10 citation statements)
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“…The pH measurements graph of the leach extraction tests, shown in Figure 3(a), indicates consistent results compared with tests by Machado and Schneider (2008) who studied sulfide coal tailings from a region in southern Brazil mixed with steel slag.…”
Section: Geochemical Resultssupporting
confidence: 80%
See 2 more Smart Citations
“…The pH measurements graph of the leach extraction tests, shown in Figure 3(a), indicates consistent results compared with tests by Machado and Schneider (2008) who studied sulfide coal tailings from a region in southern Brazil mixed with steel slag.…”
Section: Geochemical Resultssupporting
confidence: 80%
“…A pH in the range of 6-8 can be considered within a neutral "range" according to the Canadian MEND Program ( 2009). The M25 pH was neutral after 100 days at a proportion of 1:3 that was suggested by Machado and Schneider (2008) to neutralize sulfide coal tailings.…”
Section: Geochemical Resultsmentioning
confidence: 82%
See 1 more Smart Citation
“…Among the main kinetic methods, we highlight the following: humidity cell, Soxhlet extractor, leaching column and B.C. (British Columbia) confirmation kinetic tests (US EPA, 1994, Blowes et al, 2003, Machado & Schneider, 2008, Mend Report, 2009.…”
Section: Mineraçãomentioning
confidence: 99%
“…As principais alternativas consideradas são coberturas secas (Galatto et al, 2007;Schneider 2006;Soares et al, 2008), aditivos alcalinos (Machado & Schneider, 2008) e tratamento ativo da DAM (Possa & Santos, 2003;Silveira et al, 2009). Uma outra opção é a concentração/isolamento de sulfetos.…”
Section: Introductionunclassified