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摘要:
为提高精炼渣综合利用效率，减少精炼渣堆存。本文以邯钢精炼渣为原料，利用比表面积仪、激光粒度仪、X射线衍射仪对粉磨后的精炼渣进行表征，通过胶砂试验和净浆试验，研究了精炼渣粉的物理性能。结果表明：机械力粉磨可有效降低精炼渣粒度，提高比表面积，且粉磨后精炼渣基本物相组成不变；机械力粉磨对精炼渣粉凝结时间、标准稠度值、活性指数影响显著；邯钢精炼渣在粉磨80 min条件下，标准稠度值为27.5%，凝结时间为31 min，28 d活性指数为84%，为精炼渣在建材领域的综合利用提供了试验依据和理论支撑。
Abstract:In order to improve the comprehensive utilization efficiency of refining slag and reduce the stacking of refining slag. In this paper, the refining slag of Handan Iron and Steel Group was used as raw material, and the surface area meter, laser particle size meter and X-ray diffraction are used to characterize the refining slag after grinding.The physical properties of refining slag powder were studied by mortar test and slurry test. The results show that mechanical grinding can effectively reduce the particle size and increase the specific surface area of refining slag, and the basic phase composition of refining slag remains unchanged after grinding; Mechanical grinding has a significant effect on the setting time, standard consistency value and activity index of refining slag powder; Under the condition of 80 min grinding, the standard consistency value of refining slag is 27.5%, the setting time is 31 min and the 28 d activity index is 84%, which provides experimental basis and theoretical support for the comprehensive utilization of refining slag in the field of building materials.
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Key words:
- refining slag /
- mechanical grinding /
- activity index /
- standard consistency /
- setting time
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表 1 精炼渣的化学成分
Table 1. Chemical compositions of refining slag
CaO SiO2 Al2O3 Fe2O3 MgO MnO 49.20 12.49 12.25 11.70 5.43 3.62 SO3 F TiO2 P2O5 V2O5 其它 1.39 1.02 0.85 0.75 0.49 0.81 
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表 2 精炼渣筛分结果
Table 2. Screening results of refining slag
粒级/mm 粒级产率/% 累计产率/% -0.075 7.97 100.00 -0.150+0.075 5.50 92.03 -0.300+0.150 9.38 86.53 -0.600+0.300 15.79 77.15 -1.180+0.600 13.76 61.36 -2.360+1.180 12.28 47.60 -4.750+2.360 16.82 35.32 +4.750 18.50 18.50
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表 3 砂浆试块配合比
Table 3. Mix proportion of mortar test block
编号 水泥/g 精炼渣/g 标准砂/g 水/mL 1 450 1350 225 2 315 135 1350 225
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