Dataset prepared for characterization of three South African manganese ores before or after preheating in laboratory-scale rotary kiln

Manganese ores are the major raw materials utilized in the production of manganese ferroalloys. A common problem in the production of manganese ferroalloys is the lack of knowledge regarding mineralogical and metallurgical properties of manganese ores. Decrepitation, which is described as the breakage or disintegration of the ore particles upon heating, is an important quality parameter of these ores. The decrepitation Index (DI), which is the parameter used to describe the extent of decrepitation, is described as the ratio of mass of particles <6 mm after pre-heating to the total mass of the sample. The purpose of this paper is to describe all the raw data produced during the course of an investigation into the effect of temperature, rotational speed, and particle size on the decrepitation of three types of manganese ores sourced from South Africa. Furthermore, the relevance of the raw data to scientific community as well as industry is explained. The data set will include sub-sets of data i.e. the characterization of the as-received samples, the decrepitation test results, and the characterization of post experiment samples.