COMPOSITION OF CHARGE AND METHOD OF MANUFACTURING CARBON-CONTAINING REFRACTORIES Russian patent published in 2018 - IPC C04B35/35 C04B35/43 

FIELD: technological processes.

SUBSTANCE: invention relates to the technology of refractory materials and can be used in the manufacture of refractories for particularly important sections of the lining of steelmaking, steel-casting and other metallurgical units. Composition of the mass for carbon-containing refractories includes the following components, wt%: granular fused periclase 70–75; fine fused periclase 13.3; coarse crystalline graphite 6–10; carbon fiber with the diameter of 6–9 microns and with the length of 0.9–4 mm, in excess of 100 % 0.05–0.2; phenolic powder binder 2.5–4.0; the organic solvent is ethylene glycol 0.7–2.0. Mixing of the components is carried out in several stages. At the first stage, the solution is prepared containing 0.5 % by weight of ethylene glycol and carbon fiber. Next, granulated fused periclase and ethylene glycol are loaded into the intensive-action mixer, mixed, ethylene glycol solution with fibers is added, then graphite and finely-dispersed fused periclase. Last step is to introduce powdered phenolic resin. From the prepared mass the products are molded and burnt.

EFFECT: technical result of the invention is to increase the durability of the linings of thermal units, due to the modification of the dense reinforced structure of oxide-carbon molded products.

2 cl, 2 tbl