The coal gangue is the coal production auxiliary product, calorific value is low, the ingredient is complex, which is one kind tastelessness food, hates to discard something, weak resources. Formerly, besides the minority calorific value high gangue was used, the massive low heat value gangue is compelled to store up, not only waste resources, but also invades the land, air pollution, resident's health has the harm to the mining area around, carries on the comprehensive utilization and ecology handling urge...
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