Use of low-grade alternative fuels such as waste coal, tyres, sewage sludge, and biomass fuels (such as wood products, agricultural waste, etc.) in pre-calciners is a feasible option since combustion in pre-calciner takes place at a lower temperature.
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Ministro considerou os fortes indícios de dano ao ecossistema ocasionado pelo terreno, com possíveis prejuízos …