Abstract In the process of coal mining, coal spontaneous combustion in the gob area poses serious threats to the safety of mine production. Besides, coal combustion also produces a large amount of greenhouse gas CO2, which triggers a series of ecological environment problems. In order to solve these two problems, the idea of mineralizing CO2 with the alkaline industrial waste calcium carbide slag and then sending the foams to the gob area for coal spontaneous combustion prevention was proposed in this study. First, the effects of calcium carbide slag foaming under the action of different types of foaming agents, including sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS), polyoxyethylene fatty alcohol sodium sulfate (AES), and octyl decyl glucoside (APG0810), were tested and analyzed. Furthermore, the effects of water glass (WG), sodium alginate (SA), polyvinyl alcohol 1799 (PVA), cement, and silica micro-powder on the foam stability were analyzed by investigating the stability coefficient and drainage volume of calcium carbide slag foam. On this basis, the configuration scheme of calcium carbide slag foam with high efficiency and good stability was determined. The experimental results on CO2 mineralization and coal spontaneous combustion inhibition reveal that the prepared calcium carbide slag foam can rapidly absorb CO2. Moreover, after calcium carbide slag foam treatment, the spontaneous combustion tendency of the coal sample is significantly reduced.

中文翻译：

---

用于煤矿减灾和CO2封存的碳化钙矿渣泡沫的制备及性能研究

摘要 在采煤过程中，采空区煤炭自燃对矿山生产安全构成严重威胁。此外，煤炭燃烧还会产生大量温室气体CO2，引发一系列生态环境问题。为了解决这两个问题，本研究提出了用碱性工业废电石渣将CO2矿化，然后将泡沫输送到采空区防止煤自燃的思路。一、电石渣在十二烷基硫酸钠（SDS）、十二烷基苯磺酸钠（SDBS）、聚氧乙烯脂肪醇硫酸钠（AES）、辛基癸糖苷（APG0810）等不同类型发泡剂作用下的发泡效果)，进行了测试和分析。此外，通过考察电石渣泡沫的稳定性系数和排水量，分析了水玻璃（WG）、海藻酸钠（SA）、聚乙烯醇1799（PVA）、水泥、二氧化硅微粉对泡沫稳定性的影响。在此基础上，确定了高效、稳定性好的电石渣泡沫的配置方案。CO2矿化和煤自燃抑制实验结果表明，制备的电石渣泡沫能够快速吸收CO2。而且，电石渣泡沫处理后，煤样自燃倾向明显降低。通过考察电石渣泡沫的稳定性系数和排水量，分析了微粉和二氧化硅微粉对泡沫稳定性的影响。在此基础上，确定了高效、稳定性好的电石渣泡沫的配置方案。CO2矿化和煤自燃抑制实验结果表明，制备的电石渣泡沫能够快速吸收CO2。而且，电石渣泡沫处理后，煤样自燃倾向明显降低。通过考察电石渣泡沫的稳定性系数和排水量，分析了微粉和二氧化硅微粉对泡沫稳定性的影响。在此基础上，确定了高效、稳定性好的电石渣泡沫的配置方案。CO2矿化和煤自燃抑制实验结果表明，制备的电石渣泡沫能够快速吸收CO2。而且，电石渣泡沫处理后，煤样自燃倾向明显降低。CO2矿化和煤自燃抑制实验结果表明，制备的电石渣泡沫能够快速吸收CO2。而且，电石渣泡沫处理后，煤样自燃倾向明显降低。CO2矿化和煤自燃抑制实验结果表明，制备的电石渣泡沫能够快速吸收CO2。而且，电石渣泡沫处理后，煤样自燃倾向明显降低。