INTRODUCTION

Columnar carburant and bar carburant are mainly used in casting enterprises to produce common cast iron and gray cast iron. This columnar carburant, with a content of more than 90, a sulfur content of about 0.3, and an absorption rate of about 80%, has low price and is very economical. It is a good choice for many foundries. This carburant is suitable for large furnaces. The bigger the furnace, the better the melting effect, and the higher the absorption rate.