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Possibility study of use rare earth deposit from Araxa, Minas Gerais State; Estudo das possibilidadesde aproveitamento do deposito de terras raras de Araxa, Minas Gerais

Thesis/Dissertation:

Abstract

Prospecting work done by Instituto de Pesquisas Radioativas on the Barreiro area (Araxa, M.G.) has shown the existence of a rare earth deposit of about 700.000 ton, averaging 13,5 % rare earth oxide, mainly associated to the mineral monazite. In a first stage, the conventional mineral dressing methods were tried to treat the monazite. This was followed by a study of a chemical process for the production of rare earth compounds of commercial grade. The conventional methods of mineral dressing tested did not lead to satisfactory results. This was assumed to be due to insufficient liberation of the monazite. However, the application of the chemical process to the natural material, using concentrated sulfuric acid in the initial attack, allowed more than 90% rare earth extraction and a subsequent yield of commercial grade rare earth oxide, with over 75% rare earth recovery. (author).
Authors:
Publication Date:
Dec 31, 1975
Product Type:
Thesis/Dissertation
Report Number:
INIS-BR-2998
Reference Number:
SCA: 050100; PA: AIX-24:000748; SN: 93000912853
Resource Relation:
Other Information: TH: Tese (M.Sc.).; PBD: 1975
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; RARE EARTHS; MONAZITES; RESERVES; USES; BRAZIL; CHEMICAL ANALYSIS; NUMERICAL DATA; THORIUM; URANIUM; 050100; RESERVES, EXPLORATION, AND MINING
OSTI ID:
10108492
Research Organizations:
Minas Gerais Univ., Belo Horizonte, MG (Brazil). Dept. de Engenheria Metalurgica
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Other: ON: DE93609084; TRN: BR9230236000748
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[120] p.
Announcement Date:
Jun 30, 2005

Thesis/Dissertation:

Citation Formats

Fernandes, M D. Possibility study of use rare earth deposit from Araxa, Minas Gerais State; Estudo das possibilidadesde aproveitamento do deposito de terras raras de Araxa, Minas Gerais. Brazil: N. p., 1975. Web.
Fernandes, M D. Possibility study of use rare earth deposit from Araxa, Minas Gerais State; Estudo das possibilidadesde aproveitamento do deposito de terras raras de Araxa, Minas Gerais. Brazil.
Fernandes, M D. 1975. "Possibility study of use rare earth deposit from Araxa, Minas Gerais State; Estudo das possibilidadesde aproveitamento do deposito de terras raras de Araxa, Minas Gerais." Brazil.
@misc{etde_10108492,
title = {Possibility study of use rare earth deposit from Araxa, Minas Gerais State; Estudo das possibilidadesde aproveitamento do deposito de terras raras de Araxa, Minas Gerais}
author = {Fernandes, M D}
abstractNote = {Prospecting work done by Instituto de Pesquisas Radioativas on the Barreiro area (Araxa, M.G.) has shown the existence of a rare earth deposit of about 700.000 ton, averaging 13,5 % rare earth oxide, mainly associated to the mineral monazite. In a first stage, the conventional mineral dressing methods were tried to treat the monazite. This was followed by a study of a chemical process for the production of rare earth compounds of commercial grade. The conventional methods of mineral dressing tested did not lead to satisfactory results. This was assumed to be due to insufficient liberation of the monazite. However, the application of the chemical process to the natural material, using concentrated sulfuric acid in the initial attack, allowed more than 90% rare earth extraction and a subsequent yield of commercial grade rare earth oxide, with over 75% rare earth recovery. (author).}
place = {Brazil}
year = {1975}
month = {Dec}
}