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Master's Dissertation
DOI
10.11606/D.3.2012.tde-14062013-122346
Document
Author
Full name
Anatália Lara Silva
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2012
Supervisor
Committee
Delboni Júnior, Homero (President)
Chaves, Arthur Pinto
Sampaio, Carlos Hoffmann
Title in Portuguese
Moagem semiautógena piloto do minério de ouro da Rio Paracatu Mineração
Keywords in Portuguese
Cominuição
Moagem
Moagem semiautógena
Planta piloto
Abstract in Portuguese
As moagens autógena (AG) e semiautógena (SAG) mostram-se como opções cada vez mais consideradas na seleção de novos circuitos de cominuição. A flexibilidade de operação, assim como a combinação de grandes capacidades de processamento e altas relações de redução obtidas, são algumas das vantagens destes circuitos. Este trabalho procurou descrever o método utilizado na condução de ensaios de moagem semiautógena em escala piloto e de caracterização tecnológica, empregando o minério de ouro da Rio Paracatu Mineração S/A (RPM). A moagem semiautógena foi investigada considerando diferentes condições de operação e às especificidades do minério da RPM. Foram conduzidos 69 ensaios em planta piloto que permitiram o estudo do efeito das variáveis de operação sobre parâmetros de moagem SAG, como taxa de processamento, consumo energético específico, qualidade do produto, entre outros. As informações obtidas na campanha de ensaios em planta piloto e nos trabalhos de caracterização das amostras mostraram-se consistentes e fundamentaram o dimensionamento e projeto do circuito de Expansão da RPM, com capacidade de processamento adicional de 41 Mtpa.
Title in English
Semiautogenous grinding pilot of Rio Paracatu Mineração gold ore.
Keywords in English
Comminution
Grinding
Pilot plant
Semi-autogenous grinding
Abstract in English
The autogenous (AG) and semi-autogenous (SAG) mills have increasingly been considered options in the selection of new comminution circuits. The flexibility of the operation, as well as the combination of high processing capacity and high reduction rates obtained, are some of the advantages of these circuits. This study sought to describe the method used in conducting semi-autogenous grinding pilot plant and technological characterization, using the gold ore from the Rio Paracatu Mineração S/A (RPM) mine. The semi-autogenous grinding was investigated considering different operating conditions and specific characteristics of the ore from the Rio Paracatu Mineração mine. Were conducted 69 tests in a pilot plant that enabled the study of the effects of the operating variables of the SAG grinding parameters such as processing rates, specific energy consumption, product quality, among others. Information obtained in the test campaign of the pilot plant and the characterization work of the samples were consistent and supported the design and project of the circuit of the expansion of the Rio Paracatu Mineração mine, with additional processing capacity of 41 Mtpy.
 
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Publishing Date
2013-06-24
 
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