測定高鋁磚重燒線變化率的新方法

1、測定高鋁磚重燒線變化率的新方法測定高鋁磚重燒線變化率的新方法馬明鍇，高帥(濟南鋼鐵集團總公司技術(shù)中心，山東濟南250101)摘要：在測定高鋁磚試樣的重燒線變化率時，用抽真空—液體靜力稱量法和直接浸液法作了對比試驗。結(jié)果表明，前者測得的結(jié)果重現(xiàn)性、穩(wěn)定性更好，而用后一種方法時間因素對試驗結(jié)果的影響較大，建議用前一種方法測定致密耐火制品非標準試樣的重燒線變化率。關(guān)鍵詞關(guān)鍵詞：高鋁磚；重燒線變化率；抽真空—液體靜力稱量法；直接浸液法中圖分類號

2、中圖分類號：TQ175.12文獻標識碼文獻標識碼：B文章編號文章編號：10044620(2002)06006802ANewNewMethodMethodffDeterminingDeterminingReheatingReheatingLinearLinearChangeChangeRateRateofofHighHighAluminumAluminumBrickBrickMAMingkai，GAOShuai(TheTechnolo

3、gyCenterofJinanIronSteelGroup，Jinan250101China)AbstractAbstract：Indeterminingreheatinglinearchangerateofhighaluminumbricksamplethecontrastiveexperimentsaredonewiththeevacuationhydrostaticweighingmethodthedirectimmersion

4、methodwhenaredetermined.Theresultsshowthatthereproducibilitystabilityofthefmerarebetterinthelatterthetimefactaffectsgreatlyexperimentresultstherefeitissuggestedthatdeterminingreheatinglinearchangerateofthenonstardsamples

5、ofdenserefractyproductswiththefmer.KeyKeywdswds：highaluminumbrickreheatinglinearchangerateonreheatingevacuationhydrostaticweighingmethoddirectimmersionmethod(3)用Cr2O3標記各試樣以便燒后辨認。(4)加熱。把所有試樣放進同一高溫箱式電阻爐，升溫速率為：室溫～800℃，不大于1

6、0℃min；800～1200℃，3～5℃min；超過1200℃，1～3℃min升溫至1500℃，保溫2h。(5)燒后試樣質(zhì)量的測量。用(1)的方法測量A組飽和試樣在液體中和空氣中的質(zhì)量G1、G2。用(2)的方法測量B組飽和試樣在液體中和空氣中的質(zhì)量G1、G2，結(jié)果見表1。2.32.3結(jié)果計算結(jié)果計算試樣的燒前體積V0按公式(1)計算：V0=(G02G01)DL(1)式中DL——水的密度gcm3。試樣的燒后體積V按公式(2)計算:V=(

7、G2G1)DL(2)試樣的體積變化率VC按公式(3)計算:VC=(VV0)V0100%(3)試樣的重燒線變化率LC按公式(4)計算:LC=VC3100%(4)計算結(jié)果見表1。表1試樣的測定及計算結(jié)果試樣的測定及計算結(jié)果燒前燒后試樣編號G01gG02gV0cm3G1gG2gVcm3ΔVcm3VC%LC%平均值A(chǔ)1196.55292.6896.12196.52292.0695.540.580600.20A2199.14296.3497.

8、32202.04300.8598.801.481.520.51A3193.15287.6094.45192.96287.3294.360.090.090.030.093A4189.47282.1292.65186.01276.9790.961.691.830.61A5185.60276.3690.76185.54276.2790.730.030.030.01直接浸液法A6185.83276.7090.87186.93287.3491.4

9、10.540.600.200.14B1200.85299.0598.21200.06297.8997.830.380.390.13B2195.73291.4495.71195.13290.5595.420.290.300.10B3196.56292.6896.12195.68291.3795.690.430.450.150.13抽真空液B4191.10284.5593.45189.96282.8592.890.560.600.200.1