Banca de DEFESA: ADRIELE MÉRCIA ALVES SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ADRIELE MÉRCIA ALVES SANTOS
DATE: 05/02/2024
TIME: 08:30
LOCAL: Campus Araxa
TITLE:

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

KEY WORDS:

Phosphatic Ore. Flotation. Factorial Design. Optimization

PAGES: 85
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:
Presidente - NATAL JUNIO PIRES
Interna - MICHELLY DOS SANTOS OLIVEIRA
Externo ao Programa - LEANDRO HENRIQUE SANTOS
Externo à Instituição - LUCAS CAIXETA GONTIJO - UFU