Title

MITIGATION CAPACITY RECOVERY OF DAMPING IN GELADINHO DAM TROUGHT OUT THE SEDIMENTARY ADVANTAGE LIKE IRON ORE PRODUCT

MITIGATION CAPACITY RECOVERY OF DAMPING IN GELADINHO DAM TROUGHT OUT THE SEDIMENTARY ADVANTAGE LIKE IRON ORE PRODUCT

Authorship

Oliveira, José Carlos de; Almeida, Marcelo Bustamante de; Patto, Francisco Rodrigues; Brandão, Tatiana Martins Machado; Junior, Raimundo Honório Queiroga; Crivella, Ernesto

Oliveira, José Carlos de

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Almeida, Marcelo Bustamante de

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Patto, Francisco Rodrigues

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Brandão, Tatiana Martins Machado

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Junior, Raimundo Honório Queiroga

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Crivella, Ernesto

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DOI

10.5151/2594-357x-0031

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Abstract

The Geladinho is a sedimentary contention dam of iron ore Carajás plant since 1995. Just right the quantitity of material released in this contention, restricting the capacity of damping and being necessary prevention exits. After studies, were analysed two conditions for the probleam solution: the increase of dam slope or dredging. Dredging was chosen because of the lower enviromental impact and less time for implantation, being realized by pumping material to Gelado dam. Looking for another use to the material, drilling confirmed a viable economic quality, resulting in another study: the ore recuperation, bringing benefits as such a production increase, enviromental impact reduction and operacional costs, alsome avoid the Gelado dam acumulation. For this, two fronts of work are adopted with a exploration using cutter suction dredger downstream and backhole upstream, resulting in an annual production in order of 1.250.000 tonnes of iron ore.

The Geladinho is a sedimentary contention dam of iron ore Carajás plant since 1995. Just right the quantitity of material released in this contention, restricting the capacity of damping and being necessary prevention exits. After studies, were analysed two conditions for the probleam solution: the increase of dam slope or dredging. Dredging was chosen because of the lower enviromental impact and less time for implantation, being realized by pumping material to Gelado dam. Looking for another use to the material, drilling confirmed a viable economic quality, resulting in another study: the ore recuperation, bringing benefits as such a production increase, enviromental impact reduction and operacional costs, alsome avoid the Gelado dam acumulation. For this, two fronts of work are adopted with a exploration using cutter suction dredger downstream and backhole upstream, resulting in an annual production in order of 1.250.000 tonnes of iron ore.

Keywords

Recovery; Dam; Dredging; Damping.

Recovery; Dam; Dredging; Damping.