The methods of extinguishing natural fires of sulfide ore can be divided into active methods, negative methods and combined methods. The active method can directly cover or act on the pyrometal ore by using water, inert substances, etc.; or directly excavate the spontaneous combustion ore. This method is an effective way to cure fires, but it is generally suitable for small-scale fire zones and where personnel can access them. The negative method is to build a partition wall on the passage where air may enter the fire area, reduce or completely cut off the air into the fire area and participate in the oxidation and spontaneous combustion of the ore, so that the ore cannot continue to burn due to lack of oxygen, and finally cool the suffocation by itself. The use of this method requires the fire area to be easily sealed, and the quality of the closed wall is good. The combined method is to reduce the ore temperature and reduce the oxidation rate by removing the fragmented ore and using high-temperature ore grouting, watering, spraying with a resisting agent solution, filling the empty area, and ventilating and heat removal. Achieve the purpose of eliminating the spontaneous combustion of ore. This method is more flexible and flexible to implement. Shenzhen Apex Artcrafts Co,.LTD , https://www.apexdisplaycn.com