山东冶金
山東冶金
산동야금
SHANDONG METALLURY
2014年
5期
39-41,44
,共4页
煤粉灰%灰熔融温度%成渣机理%煤粉性能
煤粉灰%灰鎔融溫度%成渣機理%煤粉性能
매분회%회용융온도%성사궤리%매분성능
coal ash%ash fusion temperature%slag forming mechanism%coal performances
通过FactSage热力学分析软件对喷吹煤粉灰组分的成渣特性进行预测，并且对直吹管内煤粉及喷枪堵塞物取样，进行微观分析，得出以下结论：1）高炉喷吹煤粉结渣特性皆由碱性物质引起，并且与成渣四元系CaO-Al2O3-SiO2-MgO中的CaO含量正相关；2）为保证成渣特性温度在1650℃，CaO含量在CaO-Al2O3-SiO2-MgO成渣四元系中不超过10%；3）尽可能在保证烟煤、瘦煤等变质程度较低煤粉的粒度＜74μm的情况下，减少＜2μm的微粒颗粒含量。
通過FactSage熱力學分析軟件對噴吹煤粉灰組分的成渣特性進行預測，併且對直吹管內煤粉及噴鎗堵塞物取樣，進行微觀分析，得齣以下結論：1）高爐噴吹煤粉結渣特性皆由堿性物質引起，併且與成渣四元繫CaO-Al2O3-SiO2-MgO中的CaO含量正相關；2）為保證成渣特性溫度在1650℃，CaO含量在CaO-Al2O3-SiO2-MgO成渣四元繫中不超過10%；3）儘可能在保證煙煤、瘦煤等變質程度較低煤粉的粒度＜74μm的情況下，減少＜2μm的微粒顆粒含量。
통과FactSage열역학분석연건대분취매분회조분적성사특성진행예측，병차대직취관내매분급분창도새물취양，진행미관분석，득출이하결론：1）고로분취매분결사특성개유감성물질인기，병차여성사사원계CaO-Al2O3-SiO2-MgO중적CaO함량정상관；2）위보증성사특성온도재1650℃，CaO함량재CaO-Al2O3-SiO2-MgO성사사원계중불초과10%；3）진가능재보증연매、수매등변질정도교저매분적립도＜74μm적정황하，감소＜2μm적미립과립함량。
Scorification properties of coal ash in certain composition were forecasted by FactSage, which is software for analysis of dynamics. Reasons for the scorification at the tuyere was obtained by microcosmic analysis of PC sample and blockages from the belly pipe.Following conclusions can be obtained that scorification characteristics of PC was determined by basic matters and showed a positive correlation to CaO content in the CaO-Al2O3-SiO2-MgO slag system. In order to stabilize the scorification temperature at 1 650℃, CaO content should be controlled under 10%. Particle size of bituminite and lean coal should be under 74μm, meanwhile, cut down the amount of micro particles under 2μm.
