Editing Refractory (section)

====Neutral refractories====
These are used in areas where slags and atmosphere are either acidic or basic and are chemically stable to both acids and bases. The main raw materials belong to, but are not confined to, the R<sub>2</sub>O<sub>3</sub> group. Common examples of these materials are [[Aluminum oxide|alumina]] (Al<sub>2</sub>O<sub>3</sub>), [[Chromium(III) oxide|chromia]] (Cr<sub>2</sub>O<sub>3</sub>) and carbon.<ref name="IspatGuru" />

* '''Carbon graphite refractories''' mainly consist of [[Graphite|carbon]]. These refractories are often used in highly reducing environments, and their properties of high refractoriness allow them excellent thermal stability and resistance to slags.
* '''Chromite refractories''' are composed of sintered magnesia and chromia. They have constant volume at high temperatures, high refractoriness, and high resistance to slags.<ref>{{Cite web|url=https://termorefractories.com/products/refractory-bricks-blocks/chromite-refractories.html|title=Chromite Refractories|website=termorefractories.com|access-date=2020-03-06}}</ref>
* '''Alumina refractories''' are composed of ≥ 50% alumina (Al<sub>2</sub>O<sub>3</sub>).