Keywords: Ilmenite, dune deposits, sand mining, wheel dredge, electric dredge INTRODUCTION Many “Heavy Minerals” deposits, consisting of minerals such as Rutile, Ilmenite, Zircon and Monazite are of placer origin, and are often found in either beach or in dune deposits.
FROM HEAVY MINERALS MINING TO A WET DREDGE MINING OPERATION: A SUCCESFUL STORY IN BRAZIL W. Herchenhorn1, H. van Muijen2, R. Ouwerkerk3, M. Boor4, C.J. Verkaik5 and J.W. de Wit6 ABSTRACT For a number of years Millennium Minerals in the Paraiba State of Brazil operated a dry mining - multi face “Heavy Minerals” mining operation successfully.
Most existing mining dredges are designed to operate in relatively protected waters. Dredge min-ing offshore in open water occurs in only a few countries (Southwest Africa, United Kingdom, In-donesia, Thailand). The Bima, a mining dredge built for tin mining offshore Indonesia, is being adapted at this time for gold mining offshore Nome, Alaska.
Sand mining dredgers create sand bars, restore beaches and more. IMS and its affiliates are the largest group of dredge companies in the Americas and have over 200 years of collective experience in the design and manufacture of hydraulic dredging systems.
Mining Utilizing dredges is a cost effective means for extracting sand, gravel, Frac Sand, Iron Ore or Coal Fine Tailings, precious materials and other minerals. No matter what your mining applications may be Rohr-Idreco Dredge is capable of satisfying your requirements.
‘Dredge mining’ is the main method used for obtaining the mineral sands from the Yarraman and Enterprise mines. A very large deep hole is dug out of the island using mining machinery. This hole is then flooded with water and a dredge is floated on this ‘dredge pond’.
The project was the first mining dredge in Senegal and required a nominal throughput of 7000tph, significantly higher than any existing mining dredge operations. The ore body is situated in a coastal area of Senegal, West Africa with limited local expertise in dredge mining.