1.產品說明(ming):鋁鎂(mei)質(zhi)耐火(huo)澆(jiao)注(zhu)料(liao)(liao)是以Al2O3和MgO為主(zhu)要成(cheng)分(fen)的(de)可澆(jiao)注(zhu)耐火(huo)材(cai)料(liao)(liao)。這(zhe)種(zhong)耐火(huo)材(cai)料(liao)(liao)是堿(jian)性耐火(huo)澆(jiao)注(zhu)料(liao)(liao)的(de)主(zhu)要品種(zhong)之一。施工時加入適量的(de)水或液態結合劑經(jing)攪拌混(hun)合即(ji)可制成(cheng)具有良好的(de)流動性的(de)澆(jiao)注(zhu)料(liao)(liao)。澆(jiao)注(zhu)成(cheng)型后在常溫下凝結,烘烤后硬(ying)化(hua)。
2.產品性(xing)能(neng)(neng):鋁(lv)(lv)(lv)(lv)(lv)鎂(mei)(mei)(mei)質(zhi)耐(nai)火澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)使用的(de)(de)原(yuan)材料(liao)(liao)(liao)(liao)(liao)分為天(tian)然(ran)(ran)和(he)合成(cheng)(cheng)(cheng)(cheng)兩(liang)種(zhong)。天(tian)然(ran)(ran)原(yuan)材料(liao)(liao)(liao)(liao)(liao)多(duo)使用鋁(lv)(lv)(lv)(lv)(lv)礬(fan)(fan)土孰料(liao)(liao)(liao)(liao)(liao)作(zuo)骨料(liao)(liao)(liao)(liao)(liao),鎂(mei)(mei)(mei)砂粉(fen)與(yu)鋁(lv)(lv)(lv)(lv)(lv)礬(fan)(fan)土孰料(liao)(liao)(liao)(liao)(liao)粉(fen)作(zuo)基質(zhi),結合劑(ji)多(duo)使用水玻(bo)璃。這種(zhong)澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)典型(xing)理(li)化指標為:含AL2O310%-70%,MgO8%-15%,Fe2O3<3%,體積密度(du)(du)2.45-2.65g/cm3,耐(nai)壓(ya)強度(du)(du)25-30MPa,烘干線收縮0.25%-0.35%。使用溫(wen)度(du)(du)為1500-1700℃。澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)在使用過程中于(yu)1200-1300℃下,Al2O3與(yu)MgO反應生成(cheng)(cheng)(cheng)(cheng)鎂(mei)(mei)(mei)鋁(lv)(lv)(lv)(lv)(lv)尖(jian)晶(jing)(jing)石(shi)(MgO-Al2O3)。以(yi)合成(cheng)(cheng)(cheng)(cheng)原(yuan)料(liao)(liao)(liao)(liao)(liao)制成(cheng)(cheng)(cheng)(cheng)的(de)(de)鎂(mei)(mei)(mei)鋁(lv)(lv)(lv)(lv)(lv)質(zhi)耐(nai)火澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)化學(xue)純度(du)(du)高,性(xing)能(neng)(neng)較好,這種(zhong)澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)多(duo)是使用工(gong)業氧化鋁(lv)(lv)(lv)(lv)(lv)或鋁(lv)(lv)(lv)(lv)(lv)礬(fan)(fan)土與(yu)輕燒氧化鎂(mei)(mei)(mei)為原(yuan)料(liao)(liao)(liao)(liao)(liao),經(jing)研磨(mo)、成(cheng)(cheng)(cheng)(cheng)球、煅燒等(deng)工(gong)序預先合成(cheng)(cheng)(cheng)(cheng)鎂(mei)(mei)(mei)鋁(lv)(lv)(lv)(lv)(lv)尖(jian)晶(jing)(jing)石(shi),然(ran)(ran)后(hou)以(yi)此為原(yuan)料(liao)(liao)(liao)(liao)(liao)制成(cheng)(cheng)(cheng)(cheng)骨料(liao)(liao)(liao)(liao)(liao)和(he)粉(fen)料(liao)(liao)(liao)(liao)(liao)配制而成(cheng)(cheng)(cheng)(cheng),因此也稱為尖(jian)晶(jing)(jing)石(shi)質(zhi)澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)。這種(zhong)澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)為保(bao)持它(ta)的(de)(de)優良高溫(wen)性(xing)能(neng)(neng),多(duo)使用純鋁(lv)(lv)(lv)(lv)(lv)酸鈣水泥作(zuo)結合劑(ji)制成(cheng)(cheng)(cheng)(cheng)低水泥澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)。使用合成(cheng)(cheng)(cheng)(cheng)原(yuan)料(liao)(liao)(liao)(liao)(liao)制成(cheng)(cheng)(cheng)(cheng)的(de)(de)鋁(lv)(lv)(lv)(lv)(lv)鎂(mei)(mei)(mei)澆(jiao)(jiao)注(zhu)(zhu)料(liao)(liao)(liao)(liao)(liao)理(li)化指標為:MgO 5%-7%,Al2O3 90%-95%,SiO2<0.5%。密度(du)(du)3.0-3.2g/cm3,氣孔率(lv)14%-16%,耐(nai)壓(ya)強度(du)(du)20-35MPa。荷重軟(ruan)化溫(wen)度(du)(du)1600-1650℃,烘干線收縮率(lv)0.01%-0.05%。
3.產品特點(dian):鋁(lv)(lv)鎂(mei)質耐火澆注(zhu)料(liao)(liao)具(ju)有優(you)良的(de)(de)抗(kang)(kang)渣蝕性(xing)和抗(kang)(kang)熱震性(xing),它與一般低水泥(ni)結合的(de)(de)高鋁(lv)(lv)澆注(zhu)料(liao)(liao)相比(bi),主要(yao)特點(dian)是(shi)抗(kang)(kang)熔渣滲透(tou)(tou)性(xing)好(hao),在與熔渣接觸的(de)(de)冶金設備(bei)內(nei)(nei)襯(chen)(chen)(chen)(chen)上使(shi)用耐侵蝕,抗(kang)(kang)剝(bo)落,粘渣較(jiao)少(shao),主要(yao)用于(yu)構筑鋼(gang)包(bao)內(nei)(nei)襯(chen)(chen)(chen)(chen)。這(zhe)種(zhong)材料(liao)(liao)使(shi)用壽命較(jiao)長,其原因是(shi)由于(yu)鋁(lv)(lv)鎂(mei)耐火澆注(zhu)料(liao)(liao)中(zhong)鎂(mei)鋁(lv)(lv)尖晶石的(de)(de)存在,能有效(xiao)地阻止(zhi)熔渣對(dui)內(nei)(nei)襯(chen)(chen)(chen)(chen)的(de)(de)滲透(tou)(tou),內(nei)(nei)襯(chen)(chen)(chen)(chen)不(bu)形成(cheng)段帶結構,故在使(shi)用過程中(zhong)不(bu)致產生結構應力(li)導致內(nei)(nei)襯(chen)(chen)(chen)(chen)剝(bo)落。用鋁(lv)(lv)鎂(mei)耐火澆注(zhu)料(liao)(liao)構筑鋼(gang)包(bao)整體內(nei)(nei)襯(chen)(chen)(chen)(chen)時(shi),多采用振動(dong)澆注(zhu)料(liao)(liao)施(shi)工法(fa)(fa),該法(fa)(fa)優(you)點(dian)是(shi)借助于(yu)機(ji)械振動(dong)力(li)的(de)(de)作用,增加澆注(zhu)料(liao)(liao)的(de)(de)流動(dong)性(xing)和填充(chong)性(xing),使(shi)內(nei)(nei)襯(chen)(chen)(chen)(chen)達到良好(hao)的(de)(de)致密性(xing)和強(qiang)度,而(er)且(qie)穿漏事故率(lv)低。
4.產品(pin)用途:鋁(lv)鎂(mei)質(zhi)耐火澆注料主要(yao)用于構筑鋼(gang)(gang)包(bao)(bao)整(zheng)(zheng)體內襯(chen)、鐵水包(bao)(bao)內襯(chen)和(he)出鋼(gang)(gang)槽(cao)整(zheng)(zheng)體內襯(chen)。
編號 |
1 |
2 |
3 |
4 |
5 |
||
烘干容(rong)重/g·cm-3 顯氣孔(kong)率/% 耐火度(du)/℃ |
2.82 16.2 >1830 |
2.91 15.3 >1830 |
2.81 15.6 >1830 |
2.78 16.5 >1830 |
2.88
>1830 |
||
荷重軟化溫度/℃ |
4% |
1405 |
1450 |
1455 |
1440 |
1520 |
|
耐壓強度/MPa |
110℃ 1000℃ 1400℃ |
91.2 19.1 34.3 |
101.5 34.8 36.8 |
87.7 32.8 35.8 |
88.2 26.5 28.9 |
53.4 25.5 43.1 |
|
抗熱震 性25次(ci) 后 |
冷卻方式 質量損失/% 殘余耐壓強(qiang)度/NPa |
空氣 2.15 20.6 |
空(kong)氣 2.26 45.1 |
空(kong)氣(qi) 2.40 39.7 |
水(shui)中(zhong) 3.15 |
|