From May 12 to 14, 2025, the 7th National High-level Forum on Comprehensive Utilization of Coal Gangue was successfully held in Taiyuan, Shanxi Province. At the forum, many experts, scholars and business representatives focused on the comprehensive utilization of coal gangue cutting-edge technology and innovative models to carry out in-depth discussions, to help coal resource cities to realize the green, low-carbon and recycling development and actively contribute to the wisdom and strength.
Coal gangue is a solid waste produced in the process of coal mining and washing, mainly composed of rocks, minerals and a small amount of residual coal, dark gray in appearance, hard texture. It accompanies the coal seam in the process of coal formation, and the sources include the gangue extracted in the process of roadway excavation and coal mining, as well as the gangue separated from the coal washing process.
The harm of coal gangue is mainly reflected in various aspects: long-term open piling is prone to spontaneous combustion, the release of toxic gases, air pollution and exacerbate the acid rain and the greenhouse effect; its leachate carries heavy metals and acidic substances, seepage into the soil and groundwater will cause soil and water pollution, threatening ecological security; a large number of piles of gangue mountain there are structural instability, easy to cause collapses, landslides and other geologic hazards, especially in rainstorms, may trigger an explosion. Explosion, threatening the life and property safety of the surrounding residents; In addition, the cumulative stockpile of coal gangue is huge, occupying a large amount of land resources, its dust and harmful components may also be through the respiratory, dietary and other pathways jeopardize human health, leading to respiratory diseases and even chronic poisoning. Therefore, promoting the harmless treatment and resource utilization of coal gangue has important environmental and social significance.
In the environmental protection practice of comprehensive utilization of coal gangue, brick-making industry has become the main position of solid waste consumption. At present, Ocean Mold for many enterprises consuming gangue to provide brick machine molds. Green intelligent equipment is to realize the solid waste brick efficient, environmentally friendly important guarantee. In the future, Ocean Mold will continue to innovate and research and development more in line with the gangue characteristics of the new mold. Mould innovation docking equipment technology needs, so that the gangue and other solid waste in the mold cavity to complete from “pollutants” to “building substrate” the perfect transformation, to promote the common development of equipment and molds.