Banca de DEFESA: MATHEUS FURLAN PINHEIRO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MATHEUS FURLAN PINHEIRO
DATE: 11/11/2022
TIME: 14:30
LOCAL: Sala 204 - Bloco 6 - CAP/UFSJ e pelo link: meet.google.com/cga-eumj-ixh
TITLE:

DEVELOPMENT OF A NANOBUBBLE GENERATOR PROTOTYPE FOR A FLOTATION PROCESS ASSOCIATED WITH THE DEVELOPMENT OF A MODIFIED STARCH-BASED DEPRESSOR

KEY WORDS:

Flotation; Nanobubbles; Ore; Tailings; NBI.

PAGES: 61
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Processos Industriais de Engenharia Química
SPECIALTY: Processos Inorgânicos
SUMMARY:

The reduction of high iron content reserves and the need for economic use of all extracted
mineral resources, makes the separation of fine and ultrafine ore a reason of important research
resources. Flotation is the unit operation most used in the separation of particles of
granulometry between 10 μm and 300 μm, but the comminution present in the initial stages of
processing, produces smaller particles, commonly discarded in the form of wet or dry tailings.
In this context, the use of micro and nanobubbles in reverse cationic flotation, with gelatinized
starch as a depressant, has been tested in order to increase the recovery of this particulate by
different mechanisms. This work seeks to evaluate the influence of the use of micro and
nanobubbles in the reverse cationic flotation process, of iron ore processing waste, together
with the use of starch modified by an association of thermal and alkaline treatment, with
Ammonium Hydroxide. For the bubbles generation, a pumping system was built, using a
venturi tube for air suction, in the pump suction, and subsequent pressurization of the system at
5 bar, in a saturation vessel. Design of experiments (DOE) was applied for modeling a Response
Surface Designd CCD) and process optimization through the Normal Boundary Intersection
(NBI) algorithm, obtaining parameters of maximum recovery of iron ore fines.

BANKING MEMBERS:
Presidente - 1985765 - FABIANO LUIZ NAVES
Interno - 1863340 - EDUARDO PRADO BASTON
Interna - 1491686 - RENATA CAROLINA ZANETTI LOFRANO
Externo à Instituição - JOSÉ IZAQUIEL SANTOS DA SILVA - UFVJM