Abstract
La Parrilla is a tungsten and tin mine located in western Spain. The tailings facility has a total capacity for 3 Mm3 and will be executed in four different phases. The main constraint for the design and construction of the tailings dam is that it has been constructed over an existing one from the 1980s. The construction activities involved removal and substitution of the old tailings from the southern portion of the facility, ground improvement with gravel columns over an area of about 10,000 m2, and construction of the dyke’s dam. This article describes the main design and construction aspects, including monitoring, until the dam’s completion in June 2019.
Highlights
La Parrilla is a tungsten and tin mine located in the Extremadura region of western Spain, on the border of the provinces of Cáceres and Badajoz, about 310 km southwest of Madrid and 240 km north of Seville
La Parrilla Mine is located in the southeastern part of the central Iberian zone of the Iberian Massif, known as the Hercynian Massif, which occupies the western part of the Iberian Peninsula, composed of crystalline and metamorphic rocks from the Paleozoic
The genetic model for the mineralization of La Parrilla has been interpreted by several studies as having granitic affiliation
Summary
La Parrilla is a tungsten and tin mine located in the Extremadura region of western Spain, on the border of the provinces of Cáceres and Badajoz, about 310 km southwest of Madrid and 240 km north of Seville. The ore (containing scheelite and cassiterite) is initially fed to a crushing and screening plant. It is pre-classified in a jig plant, from which it goes to a gravity concentration plant with spirals and shaking tables, and to a final phase of sulphide flotation and magnetic and electrostatic separation. The facility can process 2 Mt/y of ore and will produce ≈ 2.700 t of tungsten concentrate and 500 t of tin concentrate per annum. The ramp-up phase to reach the nominal feed capacity of 2 Mt/y of ore took place during the first half of 2020
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