A magnesia-carbon brick using reinforcing material

Abstract

The invention discloses a magnesia-carbon brick using reinforcing materials, and relates to the technical field of magnesia-carbon bricks. The content ratio between the two is 3:1:0.5, and the A component is composed of fused magnesia, flake graphite, organic binder, antioxidant and single crystal α-Al 2 O 3 Fiber composition, by content ratio, fused magnesia: flake graphite: organic binder: antioxidant: single crystal α‑Al 2 O 3 Fiber=3:1:4:0.3:0.2, the B component is composed of copper, beryllium and trifluoromethylbenzene, in terms of content ratio, copper:beryllium:trifluoromethylbenzene=1:1:1, The C component is composed of activated alumina and water-absorbent resin, and in terms of content ratio, activated alumina:water-absorbent resin=1:1. Magnesia-carbon bricks for this application reinforcement, with addition of single crystal α-Al 2 O 3 fiber, in the single crystal α-Al 2 O 3 Fiber is used in the production and preparation of magnesia-carbon bricks, which greatly improves the product performance of magnesia-carbon bricks and improves the strength of magnesia-carbon bricks.

Description

technical field [0001] The invention relates to the technical field of magnesia-carbon bricks, in particular to a magnesia-carbon brick using reinforcing materials. Background technique [0002] The main raw materials of magnesia-carbon bricks include fused magnesia or sintered magnesia, flake graphite, organic binders and antioxidants. The commonly used binders for the production of magnesia-carbon bricks are coal tar, coal pitch and petroleum pitch, as well as special carbon resins , polyols, asphalt-modified phenolic resins, synthetic resins, etc. Common antioxidants include Si, Al, Mg, Al-Si, Al-Mg, Al-Mg-Ca, Si-Mg-Ca, SiC, B4C, BN, etc. additive. [0003] Magnesia-carbon bricks have good high temperature resistance, strong slag resistance, good thermal shock resistance, and low high temperature creep. Compared with traditional brick products, magnesia-carbon bricks have better market advantages. [0004] In order to enhance the strength of the existing magnesia-carbon...

AI Technical Summary

Problems solved by technology

[0004] In order to enhance the strength of the existing magnesia carbon bricks, many choose to add high-performance inorganic fibers, such as silicon carbide, carbon fiber, alumina and other materials. Although these non-oxide fibers have good creep resistance at high temperatures, they are Lack of chemical stability, such as high silica fiber composites will decompose silica-carbon-oxygen phase above 800 °C, resulting in material defects, and carbon-based fibers will react with oxygen above 500 °C, these are the cause The key reason for the decline in the performance of magnesia carbon bricks