Aproveitamento do capeamento da mineração como remineralizador de solos

Abstract

CIPLAN CIMENTO PLANALTO S/A, belonging to VICAT, traditional international group Frances cement manufacturing, includes an integrated cement plant complete with mine and processing plant. In 2022, seeking to consolidate the mineral potential of its Brazilian unit, it reevaluated its resources in the search to reduce costs, maximize revenues, and evaluate the potential of 54 million tons of "mine caper" in a sustainable way. In this sense, the study took into account the Normative Instruction (IN) of the Ministry of Agriculture, Livestock and Supply (MAPA) no. 05 of 2016, which establishes the rules for remineralizers for agriculture. The chemical and agronomic tests performed in greenhouse had satisfactory results, thus meeting the IN nª 05 MAPA, with the sum of bases (CaO + MgO + K2O) in 16.95%, potassium in 3.16% and quartz by XRD in 18%. The preliminary results in the agronomic tests showed increase in potassium availability, increase in base saturation, increase in micronutrients, increase in soil pH, increase in dry mass, increase in crop height (brachiaria and corn) and reduction of toxic aluminum. It is estimated an annual financial return of 30.2 million, considering the application of 4t/ha, in a radius of 100 km and covering 24 soybean and corn producing municipalities. It is believed with the technique of soil remineralization, it is possible to reduce imports of traditional sources of fertilizers, improve the condition of soils, sequester carbon, and reduce the generation of waste in mining