On the quality of raw dolomite for converter refractories
Abstract
Widespread development of the oxygen-converter method of steel production poses before the refractory industry the task of providing converter shops with cheap high-strength refractories made from widely available raw materials. In domestic steel converters, the best resistance is possessed by lining made of fired periclase‑spinel brick made of fired magnesite and chromite ore. However, the experience of foreign countries using the oxygen-converter method of steel production shows that the greatest durability of lining and high economic effect are achieved with unfired dolomite and dolomite‑magnesite refractories made of calcined dolomite (or dolomitized magnesite) on a binder of coal tar, pitch or tar. Since tar‑dolomite refractories are cheaper than periclase‑spinel ones and have a higher resistance, they are accepted as lining material and for the oxygen‑converter shops designed in the USSR ...
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References
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