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Three Brazilian companies choose Lindner shredder

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World Cement,

Two years ago, the Brazilian government banned the landfilling of eucalyptus bark. This led to a rise in demand for Lindner Recyclingtech’s Urraco series, designed to shred eucalyptus bark to enable pulp and paper mills, as well as wood panel producers, to generate RDF to supply their own energy.

According to Udo Siebert, Lindner’s sales and service partner in Brazil, the landfilling ban promotes investments in energy recovery from eucalyptus bark, which is a relatively new concept: increasing numbers of Brazilian pulp and paper mills have their own waste-to-energy plants with production lines for RDF made of eucalyptus bark, which is a by-product of pulp production. It is not economically feasible to compost it: as it is too expensive. The bark, with low calorific value, is shredded and then mixed with wood chips and other inert material, turning it into fuel with high calorific value that can then be used directly to generate energy in the producers’ plant kilns.

Two global leaders in pulp production and one renowned wood panel producer already use Lindner’s universal shredder in their plants: Eldorado Brasil in Tres Lagoas, Fibria in Aracruz and Fibraplac in Glorinha. The three companies chose the Urraco 75 shredder with a 350 PS-strong AdBlue SCR diesel engine complying with Latin America’s emission standards.

The two-shaft shredder’s design-inherent classic crushing process involving low shaft speeds minimises dust formation at the same time. The intelligent system with two tilting hoppers which can be inclined by as much as 80° promote an optimum supply of feed material to the shafts. Depending on the shaft employed, the Urraco powerfully shreds – without damaging the material – wood, biomass, root wood, paper rolls, domestic and commercial waste, mixed construction waste, concrete sleepers, bulky waste, electronic and lightweight scrap, aluminium profiles, car bodies, and much more. And the clients in Brazil who produce RDF from eucalyptus bark are pleased with the shredder’s low wear and tear and low fuel consumption of 0.8 to 0.9 l of diesel per t of bark. Up to 300 t of bark are processed daily in the producers’ plants. The Urraco 75 operates on average six hours a day and shreds the material to a grain size of 120 mm. The hourly output is 30 t.

The Siebert & Cia team provides maintenance and repair services locally. Usually the Urraco shafts are serviced every 1000 operating hours – depending on the material and the amount of dirt in the input material. Upon request, monthly checks of the employed machines can be provided to prevent down time. Udo Siebert is very happy with the results achieved so far and has noticed increased market demand for Urraco.

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