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摘 要 鎂碳磚是70年代初出現(xiàn)的，先是在超高功率電爐，接著在轉(zhuǎn)爐、爐外精煉爐上使用，獲得了非常好的效果。由此，人們才認(rèn)識到石墨、碳素材料和高溫耐火氧化物之間結(jié)合所產(chǎn)生的作用。斷裂韌性差、高溫剝落、抗渣滲透性差，這是高溫?zé)赡突鹬破返闹旅秉c(diǎn)，含碳耐火制品的出現(xiàn)突破了這些弱點(diǎn)。在鎂碳磚中氧化鎂和石墨之間彼此相互包裹，不存在傳統(tǒng)概念中的所謂燒結(jié)；石墨具有熱傳導(dǎo)系數(shù)高，彈性模量低，熱膨脹系數(shù)小，不容易被熔渣浸潤等優(yōu)點(diǎn)，因此，由于石黑的引入，使?fàn)t襯耐火制品的斷裂韌性和抗渣滲透性有本質(zhì)的改善。鎂碳磚的主要特征是在微觀結(jié)構(gòu)上形成碳的結(jié)合物，這種結(jié)合是由有機(jī)結(jié)合劑在高溫下結(jié)焦碳化形成的。?鎂碳磚是一種不燒制品，其理化指標(biāo)為：MgO70～85％，C?l0～20％，顯氣孔率≤3％，體積密度2.87g／cm3，耐壓強(qiáng)度40～50MPa，1400℃抗折強(qiáng)度l0～15MPa。本設(shè)計(jì)共涉及轉(zhuǎn)爐鎂碳磚MT10A 10000噸/年和轉(zhuǎn)爐鎂碳磚MT14B 10000噸/年,概述了鎂碳磚的發(fā)展概況、生產(chǎn)過程、在鋼包渣線的應(yīng)用及生產(chǎn)車間的設(shè)計(jì)規(guī)劃，并對其發(fā)展前景進(jìn)行了展望。在設(shè)計(jì)中確保做到方案科學(xué)可行，技術(shù)經(jīng)濟(jì)合理，并不斷對方案優(yōu)化。在以上工作的基礎(chǔ)上，繪制了年產(chǎn)2000噸鎂碳磚廠總平面布置圖、車間平面布置圖及相應(yīng)的縱橫剖面布置圖共計(jì)12張。 關(guān)鍵詞： 鎂碳磚；生產(chǎn)工藝；鋼包；轉(zhuǎn)爐用鎂碳磚；耐火制品 Abstract Magnesia carbon brick is appeared in the early 70's, first in the ultra high power electric arc furnace, and then in the converter, refining furnace, obtained very good effect. Thus, people realized between the graphite, carbon materials and high temperature refractory oxide combined effect. The fracture toughness is poor, high-temperature spalling, slag penetration resistance is poor, this is high temperature firing the fatal disadvantage of refractory products appear, carbon containing refractory products through these weaknesses. In the MgO-C brick Magnesium Oxide and graphite inclusions between each other, there is no so-called sintering the traditional concept of; graphite has high thermal conductivity, low elastic modulus, low coefficient of thermal expansion, is not easy to slag infiltration etc., therefore, the black stone is introduced, the fracture toughness of Lu Chennai fire products and slag there are essential to improve permeability. The main characteristics of magnesia carbon brick is formed with carbon at the micro structure, this kind of combination is formed coke carbonization at high temperature by the organic binder. Magnesia carbon brick is a kind of unfired products, its physical and chemical indicators: MgO70 ~ 85%, C ~ 20% l0 ≤ 3%, apparent porosity, volume density of 2.87g / cm3, the compressive strength of 40 ~ 50MPa, 1400 ℃ flexural strength of l0 ~ 15MPa. This design involving a total of magnesia carbon brick for converter MT10A 10000 tons and magnesia carbon brick for converter MT14A 10000 tons / year, outlines the development of magnesia carbon brick, production process, application in ladle slag line and production workshop design and planning, and its development prospect. In the design to ensure that the project is scientific and feasible, economic and reasonable, and constantly to the plan optimization. On the basis of the above work, drawing an annual output of 2000 tons of magnesium carbon brick factory general layout, workshop layout and cross section layout corresponding to a total of 12. Key words: Magnesia-carbon bricks, Process, Magnesia carbon brick used in ladle, Refractory product