History

Green Dune Enterprise S.A de C.V. was created in August 2023 in the city of Aguascalientes, Aguascalientes, due to the need to recover inorganic sand from Nissan Mexicana's A1 plant, generated from a new aluminum foundry for the manufacture of high-end car engine blocks.

Sand is the largest waste of the foundry process, generally constituting around 70% of the total volume of waste. Fortunately, most foundry sands are recoverable and can be effectively reused.

Green Dune Enterprise S.A de C.V. tests innovative processes based on basic techniques to recover sand as well as innovative and unique processes in the world.

REQUIREMENTS FOR ALL SAND RECOVERY SYSTEMS.

In any recovery system, the goal is to remove a controlled amount of binder layer on the sand grain and by a dust collection system to remove the fines that are created. The requirements of any recovery system are: It must remove all impurities and foreign bodies.

Remove both magnetic and non-magnetic. Metallics are especially harmful in acid-catalyzed binder systems. The acid will react with the metal particles and a certain amount of catalyst will be used in this reaction. This amount of catalyst will be low to react with the resin. The acceptable level will depend on the sand used, the binder system used, the metal to be cast.

Other factors will vary from foundry to foundry. Green Dune Enterprise S.A de C.V. developed a sand recovery process that manages to reduce the conductivity acquired in the DIE GASTING process to an acceptable level. Conductivity is a high residue and harmful in recovered sands to be used in an organic binder system.

Electrical conductivity in sand is the ability it has to allow the passage of electrical current through it, that is, the ability to transmit electrons. Electrical conductors vary according to the temperature and atomic and molecular structures of the sand. The processes developed at Green Dune Enterprise S.A de C.V. are capable of returning the initial quality characteristics to a virgin sand.