“改身换命”获新生——山煤国际经坊煤业让煤矸石有了用武之地

Core Viewpoint - The transformation of coal gangue into a new type of building material, coal gangue bricks, by Jingfang Coal Industry represents a significant innovation, turning waste into a valuable resource and addressing environmental concerns [2][21]. Group 1: Product Demand and Market Performance - The new building materials factory of Jingfang Coal Industry has seen a surge in demand, with sales of standard bricks exceeding 36 million units in the first half of the year, a 43.8% increase compared to 2024, generating an additional revenue of over 3.8 million yuan [4][5]. - The bricks made from coal gangue exhibit superior strength and performance compared to traditional bricks, being over three times harder and offering improved moisture resistance, seismic resistance, and weathering resistance [4][13]. Group 2: Historical Context and Challenges - Prior to the establishment of the new building materials factory, coal gangue was treated as waste, with significant costs incurred for its disposal, amounting to over 100 million yuan from the early 1990s until 2004 [9][10]. - The company faced initial challenges in brick production, including issues with raw material purity and inconsistent heating, which were addressed through the implementation of additional quality control measures [15][19]. Group 3: Technological Advancements and Production Capacity - The introduction of a second automated production line in 2008 significantly increased the factory's capacity by 65 million bricks annually, allowing for the processing of over 200,000 tons of coal gangue [17][19]. - Advanced technologies, such as the use of vacuum extrusion and precise temperature control, have improved product quality, with the yield rate rising from 90% to over 98% [18][19]. Group 4: Environmental Impact and Sustainability - The new building materials factory has transformed coal gangue from an environmental burden into a "green asset," contributing to a sustainable production chain that includes pollution control and waste heat recovery [21][25]. - The factory's emissions are now below national ultra-low emission standards, and it has been recognized as a model for environmental compliance by the Ministry of Ecology and Environment [25][27].