Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Maurício Guimaraes Bergerman"'
Publikováno v:
REM: International Engineering Journal, Vol 77, Iss 2 (2024)
Abstract Mineral deposits have shown decreasing ore grade and increasing complexity, which has led mining projects to experience increased capital and operating costs. Preconcentration is an alternative to minimize such costs. Notwithstanding the res
Externí odkaz:
https://doaj.org/article/e9629f1feb384f60aee4818a0342907f
Publikováno v:
REM: International Engineering Journal, Vol 72, Iss 2, Pp 335-343
Abstract Pre-concentration consists of the preliminary discarding of a fraction of the mineral processing plant feed which contains little or none of the mineral of interest, reducing the mass to be processed in downstream operations (e.g. milling, c
Externí odkaz:
https://doaj.org/article/58fe0096c35c41f1a1f465a979e591b1
Autor:
Gabriel Rubio Pirillo, Maurício Guimarães Bergerman, Kayleigh Meneghini, Eduardo Monma, Humberto La Serna
Publikováno v:
Holos, Vol 3, Iss 0, Pp 1-10 (2021)
The number of Mining Engineering courses has increased in Brazil since 2004, resulting in a significant rise in the number of graduates. However, such growth was not followed by an equivalent rise in the number of applications for professional regist
Externí odkaz:
https://doaj.org/article/8d665cafe9d34fb9847ca0f8c6216708
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 5, Pp 4915-4923 (2019)
Feldspars are used as a fluxing agent in ceramics and glass production. However, the presence of iron-bearing minerals reduces whiteness of the ceramics. The objective of this work was to decrease the Fe2O3 content of a foyaite to
Externí odkaz:
https://doaj.org/article/c270788fb25f4af08970df720ae040a1
Publikováno v:
Holos, Vol 6, Iss 0, Pp 85-91 (2017)
Salobo plant processes a gold and copper sulfide ore. The flotation process comprises the rougher, cleaner, and scavenger stages. Concentrate from the rougher and scavenger stages goes through a regrinding process before being fed into the cleaner st
Externí odkaz:
https://doaj.org/article/ac9d949b9b4546c480e8be19a7a4ce9c
Autor:
Ronaldo Almeida Fonseca, Francisco das Chagas Olegario Júnior, Helbert Felipe Lino, Maurício Guimarães Bergerman
Publikováno v:
Holos, Vol 6, Iss 0, Pp 92-99 (2017)
Vale's ore processing plants use different types of pumping circuits for flotation reagent dosing. Most commonly, circuits with centrifugal pumps, diaphragm pumps, and peristaltic pumps are used. Alternative arrangements can also be used, such as hel
Externí odkaz:
https://doaj.org/article/d90f1315bbc340d98f67dff49e3585bf
Autor:
Mauricio Guimarães Bergerman, Anderson Miranda, Daniel Luiz, Geovan Oliveira, Homero Delboni Júnior
Publikováno v:
Holos, Vol 7, Iss 0, Pp 43-50 (2015)
A usina do Sossego foi a primeira operação da Vale S.A. a operar com um moinho semi-autógeno (SAG) para o processamento de minério sulfetado de cobre e ouro. A usina está localizada no sudeste do estado do Pará. O circuito de cominuição foi p
Externí odkaz:
https://doaj.org/article/2b22b9132dbc44c1b632e09b8d458df4
Autor:
Marcela Fernandes Oliveira, Juliana Costa Silva, Tiago Magalhães Filho, Maurício Guimarães Bergerman, Daniela Gomes Horta
Publikováno v:
Holos, Vol 7, Iss 0, Pp 94-100 (2015)
Feldspato é um termo aplicado a um grupo de aluminosilicatos combinados com proporções variáveis de potássio, sódio, cálcio entre outros cátions. Na indústria de cerâmica, em específico na fabricação de porcelanato de elevada brancura, o
Externí odkaz:
https://doaj.org/article/d739c8a185d14b5da8df07955372c971
Autor:
Mauricio Guimarães Bergerman, Anderson Miranda, Ronaldo Almeida Fonseca, Francisco Olegário Júnior, Marlon Souza, Geovan Oliveira, Homero Delboni Júnior
Publikováno v:
Holos, Vol 7, Iss 0, Pp 88-93 (2015)
A usina do Sossego processa um minério sulfetado de cobre e ouro. A etapa de flotação compreende estágios rougher, cleaner e scavenger do cleaner, sendo que os concentrados das etapas rougher e scavenger do cleaner passam por um estágio de remoa
Externí odkaz:
https://doaj.org/article/06ce3b642d6846a5824275c328a58c79
Autor:
Mauricio Guimarães Bergerman
Publikováno v:
Holos, Vol 3, Iss 0, Pp 150-157 (2014)
Na área de moagem secundária, ou remoagem, a preocupação com a eficiência energética se mostra de extrema importância. Em geral, os consumos específicos desta etapa são superiores aos da etapa primária. Além disso, tem se observado uma ten
Externí odkaz:
https://doaj.org/article/117f1dfe8bf7429884ff812da94706e6