Banca de DEFESA: FELÍCIO DE FREITAS SIMÕES
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : FELÍCIO DE FREITAS SIMÕES
DATE: 25/08/2023
TIME: 08:00
LOCAL: Sala 702/Teams
TITLE:
ASSESSMENT OF APATITE CONCENTRATION THROUGH FLOTATION AND WET HIGH INTENSITY MAGNETIC SEPARATION STAGES
KEY WORDS:
Wet High Intensity Magnetic Separation. Phosphate Ore. Apatite Flotation.
PAGES: 86
BIG AREA: Engenharias
AREA: Engenharia de Minas
SUBÁREA: Tratamento de Minérios
SPECIALTY: Métodos de Concentração e Enriquecimento de Minérios
SUMMARY:
The use of the Wet High Intensity Magnetic Separator (WHIMS) stage in phosphate ores has been currently applied in the concentrate after the flotation stage. This application aims to remove minerals containing iron in order to improve the quality of the phosphate concentrate and reduce the impacts on the subsequent chemical process of the production of fertilizers. Aiming to remove contaminating minerals that impair the recovery of P2O5 during flotation, this work assessed the application of a WHIMS stage in the phosphate ore beneficiation route prior to flotation. A sample of phosphate ore from a mine located in Patrocínio/MG was hereby utilized. For this, comparative tests evaluating three situations were carried out: flotation without a WHIMS stage; flotation with a subsequent WHIMS stage; flotation with a previous WHIMS stage. To carry out the WHIMS, a 3mm matrix will be used and three different magnetic fields will be evaluated – 11,500, 13,500 and 15,500 Gauss. The high-intensity magnetic separation, applied as a stage prior to flotation, showed statistically satisfactory results when compared to the those considering this operation after the flotation stage. As for the response optimization, 92.31% of metallurgical recovery was obtained with 35% of P2O5 in the concentrate, which is also a result superior to the metallurgical recovery of the circuit without considering the WHIMS stage, which was of 89.4%. The removal of the contaminating minerals ilmenite, rutile, perovskite, iron oxides resulted in a better recovery of apatite in the flotation of the non-magnetic product. The study carried out demonstrated a potential gain toward industrial performance with the installation of a high-intensity magnetic separation stage prior to apatite flotation.
COMMITTEE MEMBERS:
Presidente - MICHELLY DOS SANTOS OLIVEIRA
Interno - NATAL JUNIO PIRES
Externo ao Programa - LEANDRO HENRIQUE SANTOS
Externo à Instituição - ROBERTO GALERY - UFMG
Externo à Instituição - FRANCISCO GREGIANIN TESTA