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采用热态改质方法可直接将冶金熔渣制备成高附加值材料,从而实现熔渣的“热”“渣”双利用,因此这一方法在熔渣资源化利用领域中已成为研究热点.本文选取熔融钢渣和河沙分别为典型熔渣和改质剂,模拟计算分析在1600℃熔渣内掺入改质剂的过程中改质剂掺量对改质熔渣显热的影响,并对研究结果进行工业试验验证.研究表明:随着改质剂掺入,改质熔渣显热呈现先增加后减小的趋势;随改质剂掺量由5%增加到11%时改质熔渣显热反而增加,当改质剂掺量为11%时改质熔渣显热达到最大.从熔渣显热利用和改质效果综合考虑,改质剂掺量的理论最佳区间为11%~19%.现场试验表明,掺入12%左右的河沙后,改质熔渣流动性好,冷却渣安定性等性能改善显著.
The hot modification method can be directly prepared metallurgical slag into high value-added materials, in order to achieve the slag “hot ” “slag ” double use, so this method in the slag utilization of resources Become a research hot spot.In this paper, molten slag and sand are selected as typical slag and modifier respectively.Modeling calculation analysis shows that the amount of modifier in modifying the slag in the slag at 1600 ℃ has a great influence on the sensible heat The results show that: With the addition of modifier, the sensible heat of modified slag first increases and then decreases; with the amount of modifier increased from 5% to 11 %, The sensible heat of modified slag increases instead, and when the content of modifier is 11%, the sensible heat of modified slag reaches the maximum.According to the comprehensive utilization of the sensible heat utilization and modification effect of slag, the theory of modifier dosage The best range of 11% ~ 19%. Field tests show that after the incorporation of about 12% of the river sand, modified slag flow is good, cooling slag stability and other properties improved significantly.