Overview of domestic refractories recycling

Our refractories for reuse after a late start, the relatively low recycling rate. According to reports, after the re-utilization of refractories for about 20%, some even use, but also to reduce the product quality for the price.

In recent years, most of the major domestic steel mills and factories have attached great importance to the refractories  recycling and reuse, ongoing research and application of all aspects of the work.

Baosteel better after Refractory reuse the work performed, the main blast furnace trough castable have been recycled as slag trough castable materials, prepared for the regeneration of MgO-C regenerated after treatment with the antioxidant and MgO-C strong slag resistance, long life advantages.

WISCO will use the aluminum-magnesium carbon debris classification, after removal of impurities, manually eradicate sticky residue and buffer layers, and magnetic separation and hydration treatment, using a jaw crusher crushing the material to 25mm or less, and finally with a hammer crusher processed into the desired particle size to produce renewable alumina magnesia.

Jigang aluminum carbon refractories (later abandoned skateboard brick, brick pedestal, outlet, plug the stick) for iron ditch Ramming expected to replace some high-alumina material. Magnesia chrome brick after as raw material, by a certain percentage added to the RH gunning years, with favorable results. Meanwhile, the better the performance of renewable prepared magnesia-chrome brick, cement kilns in non-critical areas and RH have better prospects.

At present, the domestic researchers also proposed: By adding an appropriate amount

in the refractory oxides useful in improving high-temperature performance to optimize the preparation of high quality modified material; through the reduction reaction of the transition temperature materials such as SiC,-Sialon, Mgalon etc. ; adopted by the brick after brick with a skateboard mullite; adopted by the silica brick, with C as a reducing agent synthesis SiC; using brick with a skateboard after synthesis-Sialon; using bricks with the skateboard, with the MgO-C synthetic oxide and non-oxide Mgalon and other composite materials to make products with high strength, thermal shock and erosion resistance, excellent performance, as a new and efficient high-temperature refractory materials for key parts of the equipment in order to achieve efficient use of resources and energy.

Refractory recyclable become refractory industry development trend. To achieve a breakthrough in the refractory industry, we must follow the needs of the community development.