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Carbonate Steelmaking Slag to Manufacture Building Materials

机译：碳酸盐炼钢渣生产建筑材料

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Accelerated carbonation is a new technology of materials preparation, which may have potential for the treatment of industrial solid residues and the sequestration of CO2, an important greenhouse gas. In this study, accelerated carbonation was used to recycle steelmaking slag and sequestrate CO2 to manufacture building materials. The experimental results show that the strength of specimens increases along with the increase of carbonation degree. Moisture content, carbonation temperature and curing time have significant effects on the degree of carbonation, and carbonated specimens have larger weight increase and compressive strength increases under the condition of moisture content 12.6%，reaction time 117 min and reaction temperature 361 K. The SEM and XRD analyses indicate that dogtooth like CaCO3 crystals appear on the surface of carbonated aggregate specimens. Strength and soundness test shows that steelmaking slag building materials have higher strength and eligible soundness after accelerated carbonation.
机译：加速碳化是一种材料制备的新技术，它可能具有处理工业固体残留物和隔离重要温室气体CO2的潜力。在这项研究中，加速碳化被用于回收炼钢炉渣并封存二氧化碳以制造建筑材料。实验结果表明，试样的强度随碳化程度的增加而增加。水分，碳酸化温度和固化时间对碳酸化程度有显着影响，在水分含量为12.6％，反应时间为117 min，反应温度为361 K的条件下，碳酸化后的样品的重量增加较大，抗压强度增加。 X射线衍射分析表明，类似碳酸钙的犬牙状晶体出现在碳酸骨料标本的表面。强度和强度试验表明，炼钢渣建材经过加速碳化后具有较高的强度和合格的强度。

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