System and method for ensuring stable coke quality of silo coal blending under low inventory condition

The invention relates to a system and a method for ensuring stable coke quality of silo coal blending under a low inventory condition, and belongs to the technical field of ironmaking. The system comprises a supplier warranty book input module, a data storage module, an unloading group batch information storage module, a quality combination module, a quality index abnormity module and a silo coal seam tracking module. The quality index abnormity module is used for setting an index difference abnormity standard of each material, judging the quality of the coking coal after quality combination according to the quality standard of each coking coal variety, and reminding when the quality abnormity standard is highlighted; and after the in-factory quality detection result of the batch is fed back, the actual detection quality of the batch replaces the combined quality, and the actual detection quality is compared with the standard, and is highlighted to remind when reaching the abnormal standard. When the coking c