高炉渣离心粒化法研究进展综述

A review of research progress of centrifugal granulation of blast furnace slag

目前国内外主要利用水淬法回收高炉渣中丰富的余热资源.但由于水淬法耗水量大,余热资源回收效率低且污染环境,干法粒化回收逐渐得到人们的重视.作为干法粒化工艺的其中一种,离心粒化法具有余热回收效率高、粒化效果显著、单体处理能力大且能与化学法相结合的特点,在满足高附加值利用高炉渣的前提下,对环境污染小,符合目前倡导资源节约、环境友好的趋势,对现在钢铁企业的节能减排起着至关重要的作用.本文从理论和实验两个角度对离心粒化的研究进展进行了介绍,理论部分着重于总结各研究者对粒化机理、颗粒受力和液滴形成等方面的研究成果,实验部分阐述了不同因素对粒化效果的影响,对主要的研究内容及结论进行了总结,同时分析了不同研究内容的侧重点和差异,从而能够对离心粒化法的研究方向有一个很好的把握.

At present,water quenching method is mainly used to recover the rich residual heat resources in blast furnace slag.However,due to the large consumption of water quenching method to recover the rich waste heat resources in blast furnace slag,the low recovery efficiency of waste heat resources and pollution of the environment,the dry granulation recovery has been paid more and more attention.As one of the dry granulation processes,centrifugal granulation method has the characteristics of high recovery efficiency of waste heat,significant granulation effect,large monomer processing capacity and can be combined with chemical method,On the premise of satisfying high value-added utilization of blast furnace slag,it has little environmental pollution,which is in line with the current trend of advocating resource conservation and environmental friendliness,and plays a vital role in energy conservation and emission reduction of iron and steel enterprises.This article introduces the research progress of centrifugal graining from the perspective of both theory and experiment,the theoretical part focuses on the summary of the researchers,particle force and mechanism for the graining droplets form the aspects of research results,the experiment part expounds the effects of different factors on the graining of the main research contents and conclusions are summarized,and analyzed the different emphasis of the research contents and differences,to the study of method of centrifugal graining direction to have a good grasp.