PARTICIPATING MINES

 

MINERA DE ORGIVA

MINERA DE ORGIVA is a fluorspar mining and trading company located in the town of Orgiva (Granada) in Spain. Fluorspar is considered a priority
commodity by the European Union. MINERA DE ORGIVA is a young company specialised in production and marketing of fluorspar. It currently owns the Mina
Lujar that allows annual sales of 12,000 tons of metallurgical fluorspar and 20,000 t of cement spar. The complexity of the deposit makes its underground mining very sensitive to costs. In addition, MINERA DE ORGIVA has three research permits for fluorspar in Andalusia, one for gold and one for alabaster. The company is currently exploring the possibility of partnering with Turkish mining companies in order to exploit various minerals in this country.

Along the project these processes will be monitored:

  • Borehole mesh design
  • Borehole drilling
  • Explosives setting
  • Blasting
  • Fragmentation distribution sieving
  • Milling and concentration.

ORGIVA will contribute to SLIM in the validation phase (WP6) making available to the project its mining infrastructure to perform
partial and final validation tests. During the project development, ORGIVA will collaborate in all validation phases.

ERZBERG

The Erzberg is the biggest open pit iron ore mine in middle Europe and the biggest deposit of siderite in the world. The main iron mineral is correctly identified as sideroplesite with iron content between 38 and 42 %. Other iron minerals are ankerites with differing iron content between 10 and 17 %. The main waste materials within the ore bearing formation beside of ankerite are different types of limestone. The bottom floor of the deposit is formed by a volcanic silicate rock and the overburden by a partly schisted sandstone called “Werfener Schichten”.

According to historic documents the mining activity was first mentioned in 712, so there is a mining history for longer than 1300 years. These first mine operations were many small open pit mines which mainly extracted the weathered parts of the ore body. In the 16th century the first bigger underground operations started using mallet and gad. The modern open pit operation started in 1820 and since 1890 the characteristic pyramidal form took shape.

In 1907 there were 60 benches in operation with 12 m height and in 1928 the number of benches was halved to 30 with 24 m height which is the today’s appearance. Nowadays over 11 million tons of ore and overburden are blasted every year by the VA Erzberg GmbH at the Erzberg in order to produce 2.8 million tons of sinter fines for the voestalpine sinter plants in Linz and Donawitz (Austria). To meet the product quality production control starts already in the open pit by selective mining of three raw material qualities depending on the iron content. The production control starts with the layout of the blasting systems on the basis of the deposit model. The model includes data of the chemical analyses of the production drill holes, exploration drills and geological data of the old underground mine surveying. The model delivers a quality forecast for the planned blasting system which assists the schedule for drilling and blasting operation. The chemical data from the drilled holes are fed back into the model so the forecast precision increases. After the blast additional samples could support the raw material classification. That system ensures that every time every raw material quality is available for best utilization of vehicle fleet and processing plant.

The location of the mine within the city of Eisenerz requires special techniques to assure low environmental impacts. Additionally the geological situation of the orebody is a challenging issue for the mining engineers and therefore selective mining processes have to be applied.

EL ALJIBE

The quarry EL ALJIBE has been developing for more than twelve years of exploitation of a mineral resource of Section A and C , through a process of grinding and classification made by dry ore torn by blasting, mylonite, to obtain gravel to asphalt agglomerates and concrete , ballast type I for high-speed railway and graded aggregates for public works and building. EL ALJIBE will be where blasting is in progress necessary to carry out the work of rock characterisation pre and post-blast and controlling rock fragment size distribution, included in second work package. Also, in the third work package, measures of air pollution will be made. EL ALJIBE is operated by BENITO ARNÓ E HIJOS S.A.U. which will contribute to SLIM project in the validation phase (WP6), with its expertise in the mining sector making available its infrastructure to perform partial and final validation tests.

This project has received funding from the European Union’s Horizon 2020
Horizon 2020 - European Union funding for Research & Innovation