測(cè)定高鋁磚重?zé)€變化率的新方法

1、測(cè)定高鋁磚重?zé)€變化率的新方法測(cè)定高鋁磚重?zé)€變化率的新方法馬明鍇，高帥(濟(jì)南鋼鐵集團(tuán)總公司技術(shù)中心，山東濟(jì)南250101)摘要：在測(cè)定高鋁磚試樣的重?zé)€變化率時(shí)，用抽真空—液體靜力稱量法和直接浸液法作了對(duì)比試驗(yàn)。結(jié)果表明，前者測(cè)得的結(jié)果重現(xiàn)性、穩(wěn)定性更好，而用后一種方法時(shí)間因素對(duì)試驗(yàn)結(jié)果的影響較大，建議用前一種方法測(cè)定致密耐火制品非標(biāo)準(zhǔn)試樣的重?zé)€變化率。關(guān)鍵詞關(guān)鍵詞：高鋁磚；重?zé)€變化率；抽真空—液體靜力稱量法；直接浸液法中圖分類號(hào)

2、中圖分類號(hào)：TQ175.12文獻(xiàn)標(biāo)識(shí)碼文獻(xiàn)標(biāo)識(shí)碼：B文章編號(hào)文章編號(hào)：10044620(2002)06006802ANewNewMethodMethodffDeterminingDeterminingReheatingReheatingLinearLinearChangeChangeRateRateofofHighHighAluminumAluminumBrickBrickMAMingkai，GAOShuai(TheTechnolo

3、gyCenterofJinanIronSteelGroup，Jinan250101China)AbstractAbstract：Indeterminingreheatinglinearchangerateofhighaluminumbricksamplethecontrastiveexperimentsaredonewiththeevacuationhydrostaticweighingmethodthedirectimmersion

4、methodwhenaredetermined.Theresultsshowthatthereproducibilitystabilityofthefmerarebetterinthelatterthetimefactaffectsgreatlyexperimentresultstherefeitissuggestedthatdeterminingreheatinglinearchangerateofthenonstardsamples

5、ofdenserefractyproductswiththefmer.KeyKeywdswds：highaluminumbrickreheatinglinearchangerateonreheatingevacuationhydrostaticweighingmethoddirectimmersionmethod(3)用Cr2O3標(biāo)記各試樣以便燒后辨認(rèn)。(4)加熱。把所有試樣放進(jìn)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(cè)量。用(1)的方法測(cè)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(cè)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(jì)算結(jié)果計(jì)算試樣的燒前體積V0按公式(1)計(jì)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(jì)算:V=(

7、G2G1)DL(2)試樣的體積變化率VC按公式(3)計(jì)算:VC=(VV0)V0100%(3)試樣的重?zé)€變化率LC按公式(4)計(jì)算:LC=VC3100%(4)計(jì)算結(jié)果見表1。表1試樣的測(cè)定及計(jì)算結(jié)果試樣的測(cè)定及計(jì)算結(jié)果燒前燒后試樣編號(hào)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