- 25 tonnes of Dealkalised BR have been produced. Samples of the treated material have been sent to 12 different research and commercial organisations for testing in the production of supplementary cementitious materials, geoploymers, dense phase monoliths and slip bricks.
- A 500 m road has been built in the BRDA of AAL. Environmental and mechanical monitoring in the past year have revealed no problems.
- 2 tons BR converted to Smart Spheres. Pilot test trials when used in prefabricated slabs are lightweight and perform similar behaviour as lightweight concrete produced from other methods.
- 2 tons of granulated, vitrified BR has been produced. VBR was tested succesfully in cementitious applications by KUL and used by Resourcefull for producing brick slips. Testing by ACC confirmed that VBR can be used as addition in lightweight concrete and as partial replacement of cement in hydraulically bounded materials.
-More than 20t of BR were processed to produce more than 11 of slag and 3.6t of pig iron in 3 different campaigns producing pig iron and slag for various applications.The BR pig iron may be used for production of grey iron.
-Prototype microwave furnace with a processing capacity of up to 30kg/h was developed and commissioned. Testing with BR successfully produced a magnetite concentrate. Wet magnetic separation experiments of the produced concentrate at NTUA indicate an 82% iron recovery in the magnetic fraction
-Leached successfully 70% of alumina from the BR slag; demonstrated that 75% Sc contained in the leaching residue (grey mud) can be leached and extracted into Sc concentrate. Demonstrated the extraction of Ga >99% pure from 100 L of Bayer liquor with an efficiency >90%.
-Tested 200 kg of vitrified BR slag as a as a potential alternative to conventional blast furnace slag in CEM II/B-S - formulations. At a 30 wt.% replacement level, the BR slag cements met the strength criteria for cement according to EN 197-1.
- 7 t of BR-slag where utilized at ROCKWOOL factory in Hungary The BR-slag was capable to replace existing raw materials, with up to 10% charge substitution.
-Α number of building products have been developed using processed BR, including Brick Slips, pavement tiles, conctrete furniture, fire-resistant panels and others. Such building products were used in the construction of the ‘Bauxite House’ at Aspra Spitia, the housing settlement next to the MYTILINEOS alumina plant. The ‘Bauxite House’ after the end of the RemovAl project will serve as an informational pavilion, showcasing BR valorisation technologies
-Contribution to “Scoping possible further EU-wide end-of-waste and by-product criteria” organised by JRC. In this frame, the benefits of bauxite residue classification as by-product were highlighted by providing key case-studies and stress the need for proper adapting legislation and harmonised criteria. Industry recommendations document finalized.
