A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Environment-friendly coal gangue brick treatment method
The invention discloses an environment-friendly coal gangue brick treatment method. The method comprises the following steps: drying coal gangue; coal gangue screening: screening out coal gangue particles which can be directly mixed, and screening out unusable impurities; crushing coal gangue, selecting coal gangue particles which do not pass through and further crushing to form coal gangue powder, and crushing the coal gangue powder into particles with the particle size meeting the screening standard; preparing concrete slurry, adding water glass, a hardening agent and acid-resistant powder, mixing with the coal gangue powder, and stirring to obtain the concrete slurry; pouring the concrete slurry back into the brick mold; and carrying out high-temperature firing on the brick mold after backward flowing. The problem that certain environmental risks still exist in the accumulation or backfill disposal process due to the fact that the coal gangue contains low-concentration heavy metal and the content of some heavy metal is far higher than the soil background value is solved.
本发明公开了一种环保型煤矸石砖块处理方法，包括有煤矸石干燥处理；煤矸石筛选，筛选出可直接混合的煤矸石颗粒，也筛选出不可用杂质；煤矸石破碎，筛选未通过煤矸石颗粒进一步破碎已形成煤矸石粉，粉碎成符合筛选标准的颗粒尺寸；配置混凝土浆料，加入水玻璃、硬化剂和耐酸粉料，与煤矸石粉混合后搅拌成混凝土浆料；将混凝土浆料倒灌在砖块模具中；对倒灌后砖块模具进行高温的烧制。解决了煤矸石中含有较低浓度的重金属，有些重金属的含量还远超土壤背景值，使其在堆积或回填处置过程中仍存在一定的环境风险的问题。
Environment-friendly coal gangue brick treatment method
The invention discloses an environment-friendly coal gangue brick treatment method. The method comprises the following steps: drying coal gangue; coal gangue screening: screening out coal gangue particles which can be directly mixed, and screening out unusable impurities; crushing coal gangue, selecting coal gangue particles which do not pass through and further crushing to form coal gangue powder, and crushing the coal gangue powder into particles with the particle size meeting the screening standard; preparing concrete slurry, adding water glass, a hardening agent and acid-resistant powder, mixing with the coal gangue powder, and stirring to obtain the concrete slurry; pouring the concrete slurry back into the brick mold; and carrying out high-temperature firing on the brick mold after backward flowing. The problem that certain environmental risks still exist in the accumulation or backfill disposal process due to the fact that the coal gangue contains low-concentration heavy metal and the content of some heavy metal is far higher than the soil background value is solved.
本发明公开了一种环保型煤矸石砖块处理方法，包括有煤矸石干燥处理；煤矸石筛选，筛选出可直接混合的煤矸石颗粒，也筛选出不可用杂质；煤矸石破碎，筛选未通过煤矸石颗粒进一步破碎已形成煤矸石粉，粉碎成符合筛选标准的颗粒尺寸；配置混凝土浆料，加入水玻璃、硬化剂和耐酸粉料，与煤矸石粉混合后搅拌成混凝土浆料；将混凝土浆料倒灌在砖块模具中；对倒灌后砖块模具进行高温的烧制。解决了煤矸石中含有较低浓度的重金属，有些重金属的含量还远超土壤背景值，使其在堆积或回填处置过程中仍存在一定的环境风险的问题。
Environment-friendly coal gangue brick treatment method
一种环保型煤矸石砖块处理方法
LIN JIANXIN (author)
2021-08-24
Patent
Electronic Resource
Chinese
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