Journal of Safety and Environment

The present paper is to introduce our testing results on the spontaneous combustion of high sulfur-contained mining ore. In order to test and control the spontaneous combustion of sulfide mining ore and improve the quality of the mine environment, we have chosen four kinds of chemical reagents (coded A, B, C, D) in hope to find the efficient sulfide ore spontaneous inhibitor from the compounds mixed in different proportions in our experiments. Then, the compounds as candidate inhibitors were added to the copper ore samples chosen from the Dongguashan Mine at the normal temperature, respectively. To make the experimental results accurately reflect the actual situation on the field, we have been to Dongguashan mine three times to collect sulfur iron ore samples, which had been sealed up for preservation in dry granularity. According to the demands for choosing sulfur inhibitors and the features of iron ore, we have decided to do the experiments in laboratory conditions. All the samples were then measured from time to time (3-5 d) with a precision balance with accuracy of 0.1 mg with the weight changes recorded. The test time tends to last about 65 d. The experimental data were to be carefully dealt with to find the changing curve of the rate resistance with the purpose to determine the effective, practical formula for the quality change of the inhibitors. The results of our experimental studies have shown that the water glass with sulfuric acid plays quite a good role of the resistance on the spontaneous combustion of high sulfurcontained minerals.