本文選題：精煉鋼包 + 輕量化耐火材料　； 參考：《中國材料進(jìn)展》2017年06期

【摘要】：耐火材料輕量化是其重要發(fā)展方向之一,研發(fā)合適的多孔骨料取代致密材料且確保服役安全與壽命是一條重要途徑。大型工業(yè)爐工作襯處于高溫苛刻環(huán)境,其渣蝕致?lián)p是關(guān)鍵,不僅與鋼渣運(yùn)動(dòng)有關(guān),也受材料微結(jié)構(gòu)的影響,僅憑單一實(shí)驗(yàn)手段難以探明。以精煉鋼包鋁鎂系耐火材料為對象,研制了性能指標(biāo)參數(shù)優(yōu)異的輕量微孔剛玉骨料及其輕量鋁鎂系耐火材料,無論是靜態(tài)還是動(dòng)態(tài)渣蝕實(shí)驗(yàn),輕量鋁鎂系耐火材料均表現(xiàn)出不亞于普通鋁鎂系耐火材料的抗渣性能。同時(shí),根據(jù)自制多孔骨料性能參數(shù),采用隨機(jī)骨料-基質(zhì)二元結(jié)構(gòu)模型描述耐火材料微結(jié)構(gòu)差異,構(gòu)建其渣蝕過程的溫度、流動(dòng)、反應(yīng)等多場耦合數(shù)學(xué)模型,利用數(shù)值模擬方法,探索不同條件下精煉鋼包輕量化耐火材料的渣蝕特性,明確了多孔骨料的關(guān)鍵參數(shù)及輕量化鋁鎂系耐火材料的抗渣蝕機(jī)理,可為設(shè)計(jì)和開發(fā)長壽輕量化耐火材料提供理論指導(dǎo),能促進(jìn)精煉鋼包等高溫窯爐的節(jié)能降耗。
[Abstract]:Lightweight refractories are one of the important development directions. It is an important way to develop suitable porous aggregates to replace dense materials and ensure service safety and life. The working lining of large industrial furnace is in a harsh environment at high temperature, and its slag corrosion is the key. It is not only related to the movement of steel slag, but also affected by the microstructure of the material. It is difficult to find out by a single experimental method. A lightweight corundum aggregate with excellent performance parameters and its lightweight aluminum-magnesium refractories were developed for refining ladle aluminum-magnesium refractories, both static and dynamic slag corrosion experiments were carried out. The slag resistance of lightweight alumino-magnesium refractories is no less than that of ordinary aluminum-magnesium refractories. At the same time, according to the performance parameters of self-made porous aggregate, the stochastic aggregate matrix binary structure model is used to describe the microstructure difference of refractories, and the coupled mathematical models of temperature, flow, reaction and so on in the process of slag corrosion are constructed. By means of numerical simulation, the slag corrosion characteristics of lightweight refractory in refining ladle under different conditions were explored. The key parameters of porous aggregate and the mechanism of slag corrosion resistance of lightweight aluminum-magnesium refractories were determined. It can provide theoretical guidance for the design and development of lightweight refractories for long life and promote energy saving and consumption reduction in high temperature furnaces such as refining ladles.
【作者單位】： 武漢科技大學(xué)省部共建耐火材料與冶金國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51474165,51204126)
【分類號】：TF341;TQ175.1
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本文編號：1807175