Comminution routes and grain size in three remineralizers

• Grant number: 15/25479-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2016
• End date: January 31, 2017
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Antonio Carlos de Azevedo
• Grantee: Mayara Marques Carneiro
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

Remineralizers are materials of mineral origin that have been modified in their size and shape for use as inputs, a view that mining waste can collaborate with the supply of nutrients for crops, as well as other improvements in crop performance. The modification process of the material can occur in different ways and using different equipment. This fact implies changes in the final material, influencing the agronomic performance of this material. This paper proposes the grain analysis of three different remineralizadores (granite, siltstone, and diabase) studied in their way, to carry out the identification among the two routes (processes) comminution (decrease in size) which is the most efficient in the production of this input. It notes that the form directly influences the specific surface area (SSA) and consequently the dissolution of the grain in the field.