Banca de QUALIFICAÇÃO: MARIA VIRGÍNIA DA CUNHA
Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.STUDENT : MARIA VIRGÍNIA DA CUNHA
DATE: 07/01/2022
TIME: 14:00
LOCAL: Sala 1212 Campus Araxá
TITLE:
EVALUATION OF DISPERSION IN THE SLIDING AND PHOSPHATE ORE FLOTATION
KEY WORDS:
Dispersal. Slimming. Flotation. Phosphate ore.
PAGES: 52
BIG AREA: Engenharias
AREA: Engenharia de Minas
SUBÁREA: Tratamento de Minérios
SPECIALTY: Métodos de Concentração e Enriquecimento de Minérios
SUMMARY:
One of the steps in phosphatic ore processing is desliming, which aims to remove fines and sludge from the ore, whether natural or generated by comminution processes. It is known that the presence of fines can cause numerous problems in the flotation stage, such as the increased use of reagents and the coating of coarse particles by fines (slime coating). It is important to seek optimization of desliming and flotation to achieve better results and this can be done through dispersion. Within this context, the present work is justified by the numerous benefits brought by the eliminatin of very fine particles, taking into account the increase in selectivity, increase in P2O5 recovery, the decrease in the amount of reagents and the increase in the efficiency of the desliming step. In addition, its general objective is to analyze the influence of dispersion on the desliming and flotation of phosphatic ore and, for specific purposes, the comparison of dispersants and pH values, by calculating the degree of dispersion and recovery in the flotation operation. Flotation tests will be carried out; desliming combined with flotation; dispersion combined with desliming and flotation; and dispersion combined with flotation, using a phosphate ore sample foram a company located in the Alto Paraníba region in Minas Gerais. The dispersion tests will be carried out using a dispersion tube and with the aid of Minitab software to randomize the order of the tests, the desliming will be carried out using a settling tank and the flotation will be carried out in a mechanical cell.
BANKING MEMBERS:
Presidente - MICHELLY DOS SANTOS OLIVEIRA
Interno - MARIO GUIMARAES JUNIOR
Interno - FABIO DE SAO JOSE
Externo à Instituição - CARLOS ALBERTO PEREIRA - UFOP
Externa à Instituição - JÚNIA SOARES ALEXANDRINO - UEMG