Dolochar coal is a byproduct of the sponge iron manufacturing process, which involves the reduction of iron ore using non-coking coal. Dolochar coal is a low-grade fuel that contains high levels of ash, sulfur, and volatile matter. It is typically used as a fuel in thermal power plants, but its use is limited due to its low calorific value and high ash content. In recent years, efforts have been made to find alternative uses for dolochar coal, such as in the production of briquettes for use in industrial boilers and as a source of carbon for the production of activated carbon.