Vale’s New Factory Produces Construction Materials from Mining Waste. The Activity is a Partnership with CEFET in Minas Gerais
The mining company Vale inaugurated its first tailings reprocessing plant in Itabirito, Minas Gerais. The purpose of the new factory is to produce materials for the construction sector using mining waste. The new plant is located at the Pico Mine, and it will help stimulate the local economy. Operations are carried out entirely by women.
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The new factory has gone through a testing period and it is estimated that around 30,000 tons of waste will be processed in the form of dams or piles each year, leading to the production of 3.8 million precast products widely used in construction, such as flooring, structural concrete blocks, walls, concrete slabs, pipes, and more.
Rodrigo Dutra, Environmental Licensing Executive at Vale, says that “In addition to making our operations safer and more sustainable, we want to foster the development of innovative solutions that generate value for neighboring communities and society.”
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Since 2014, Vale has been conducting research on the application of tailings. It is also an environmentally friendly solution to replace the use of natural sand in construction. Rodrigo concludes that “Vale’s sandy tailing, resulting from ore processing, has a high silica content and very low iron content, and offers the added advantage of high chemical and granulometric uniformity.”
About 25 million reais will be invested in the first two years of the Pico block factory for research and technological development (R&D), which will involve technical cooperation with the Federal Center for Technological Education of Minas Gerais (CEFET-MG).
Eight women will be responsible for the entire process of the factory. A resident of the municipality, Ana Luiza Marinho, hired to work at the miner’s new factory says that it is “A privilege to be chosen to work as an engineer in an initiative that follows the principles of the circular economy, reusing waste as inputs and also helping to reduce the extraction of non-renewable natural resources. I believe that the aim of the block factory, combined with the all-female team, shows how the company has been evolving, looking towards the future and caring for the communities near its operations.”

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