Paratech Hungary tests technology for conversion of bauxite residue

Paratech Hungary has tested technology for converting toxic bauxite residue into harmless building materials at the plant of alumina maker MAL in Ajka (NW Hungary), managing director Gabor Finaczy told MTI.

Paratech Hungary converted the bauxite residue, a red sludgy substance, with a mobile processing plant.

The company is in the process of obtaining permits for the process and clearing the resulting material, dubbed stabilized bauxite residue, with the accreditation bodies, Mr Finaczy said. The process could still take years, he added.

Since it was established in 2009, the company has invested almost $1m – much of it from American venture capital investors – in developing the process, he added.

A reservoir at MAL’s plant in Ajka burst in the autumn of 2010, sending a flood of red sludge into nearby villages, killing ten people and damaging hundreds of homes. The event was Hungary’s worst ever environmental disaster.

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