Banca de QUALIFICAÇÃO: ADRIELE MÉRCIA ALVES SANTOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ADRIELE MÉRCIA ALVES SANTOS
DATE: 28/04/2023
TIME: 18:00
LOCAL: Campus Araxá
TITLE:

EVALUATION OF ALTERNATIVE REAGENTS IN THE ANIonic FLOTATION OF PHOSPHATE ORE USING FACTOR DESIGN

KEY WORDS:

Phosphatic Ore. Flotation. Factorial Design. Optimization

PAGES: 57
BIG AREA: Engenharias
AREA: Engenharia de Minas
SUBÁREA: Tratamento de Minérios
SPECIALTY: Métodos de Concentração e Enriquecimento de Minérios
SUMMARY:

Since phosphate ore is the main component for the production of phosphate fertilizers, it has apatite as a mineral ore, where it is accompanied by gangue minerals, such as carbonates. For the production of fertilizers, the phosphate ore is subjected to unit steps within the treatment of minerals, including concentration, so that the phosphate concentrate is formed. Among the main methods of concentration of this ore is flotation. However, some types of phosphate ore present difficulties in flotation, mainly due to the similarity between apatite, dolomite and calcite. In view of this, several studies are carried out that seek to find routes, either by analyzing reagents or by analyzing other flotation variables to obtain an efficient operation, and thus produce an adequate phosphate concentrate. Within this context, this work aims to evaluate some flotation reagents, as well as other variables, through fractional and complete factorial design, ending with obtaining a response surface. For this, the mineral sample, which was pre-prepared, was sieved through a 20# sieve, and subsequently through a 65# sieve, deslimed, and its granulometric analysis carried out with wet sieving and pycnometry. After this initial stage, flotation tests will be carried out based on the 24-1 fractional factorial design, in order to carry out a quantitative evaluation about the variables selected for the study (type of collector, collector dosage, depressant dosage and pH). With these tests, the chemical and statistical analysis will be carried out, thus conducting the second phase of tests. This phase also consists of flotation tests based on the complete factorial design, qualitatively and quantitatively analyzing the variables selected in the statistical analysis of the 1st phase. Subsequently, the chemical and statistical analysis of the results obtained will be carried out, proceeding to obtain the response surface. With these flotation steps, it is intended to obtain the variables that really influence the flotation process, evaluating its optimal dosing conditions, in addition to evaluating the ideal pH for this, and thus producing a phosphate concentrate with phosphate content, in addition to other relationships, within industrial parameters. 

COMMITTEE MEMBERS:
Interno - NATAL JUNIO PIRES
Externo ao Programa - LEANDRO HENRIQUE SANTOS
Externo à Instituição - SEBASTIÃO DE PAULA EIRAS - UFU
Externa à Instituição - AMANDA APARECIDA CARNEIRO