copper product (~90% Cu) which could be directly re-melted. A refractory mix was developed to recycle the remaining crushed refractory size fractions by mixing with refractory materials for manufacturing low duty refractory castables for furnace backup and refractory mortar.
Jan 12, 2016· Typical waste refractories that can be recycled include firebrick, mid-alumina brick, bauxite brick, alumina-carbon, alumina-magnesia, and magnesia-carbon bricks. While the use of recycled aggregate in mag-carbon bricks is now common practise, according to Bradley, the level of any free metals remaining from any anti-oxidant additions is key to preventing quality issues with new …
recycling practice and the interest of steel melt shops were considered. It was decided that the best option of most EAF shops would be to recycle spent MgO-C refractory as a foaming slag conditioner because of their MgO content. Crushed MgO-C spent refractories can be reused directly back into an EAF without complex and costly beneficiation.
With the rapidly evolving refractories recycling sector, it will soon become the ‘new normal’ for refractory mineral purchasers to be offered a menu of their mineral requirements which will comprise two distinct and competitive refractory mineral sourcing options: Primary and …
3. Refractory recycling Refractory recycling holds a range of ecological and cost advantages to the industry namely: • Refractory waste generated by operations is greatly reduced. This in turn reduces waste disposal cost and less material being taken to landfill sites. • Pre-fired material reduces the carbon footprint.
Crushed new magnesia-carbon bricks increase the pH value of leachates to 9 – 9.5, the spent refractory from the core of the bricks generates pH = 10 – 10.5 and that of the material from the corroded 2+surface of bricks shifts pH up to 12. The alkali ions (Na +, K +, Ca) are eluted from the spent refractories.
Magnesia Carbon Bricks Recycling Crushing Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.
recycling of magnesia carbon refractory Recycling of refractory bricks used in basic steelmaking... Magnesiacarbon (MgOC) bricks have been among the first refractory bricks to be recycled since the mid90s (Arlt and König, 1998).