硅(gui)大(da)(da)量(liang)用于冶(ye)煉成(cheng)硅(gui)鐵(tie)合金(jin)(jin)作鋼鐵(tie)工(gong)(gong)業中(zhong)(zhong)合金(jin)(jin)元素，在(zai)(zai)很多種(zhong)(zhong)金(jin)(jin)屬冶(ye)煉中(zhong)(zhong)作還(huan)原劑(ji)。硅(gui)還(huan)是(shi)(shi)鋁合金(jin)(jin)中(zhong)(zhong)的(de)(de)良(liang)好組元，絕大(da)(da)多數(shu)鑄造(zao)鋁合金(jin)(jin)都含有(you)硅(gui)。硅(gui)是(shi)(shi)電(dian)(dian)(dian)子工(gong)(gong)業超(chao)純硅(gui)的(de)(de)原料(liao)，超(chao)純半導(dao)(dao)體單(dan)晶(jing)硅(gui)做的(de)(de)電(dian)(dian)(dian)子器件具(ju)(ju)(ju)(ju)有(you)體積小、重(zhong)量(liang)輕、可(ke)(ke)靠性好和(he)(he)壽命長等(deng)(deng)優(you)點(dian)。摻有(you)特(te)(te)定微(wei)量(liang)雜質的(de)(de)硅(gui)單(dan)晶(jing)制(zhi)(zhi)成(cheng)的(de)(de)大(da)(da)功(gong)率晶(jing)體管(guan)(guan)、整(zheng)(zheng)流器及太(tai)陽能(neng)(neng)(neng)電(dian)(dian)(dian)池(chi)，比用鍺(zang)單(dan)晶(jing)制(zhi)(zhi)成(cheng)的(de)(de)好。非晶(jing)硅(gui)太(tai)陽能(neng)(neng)(neng)電(dian)(dian)(dian)池(chi)研(yan)究進展(zhan)很快，轉換(huan)率達(da)到了(le)8%以(yi)上(shang)。硅(gui)鉬棒電(dian)(dian)(dian)熱元件使(shi)用溫度可(ke)(ke)達(da)1700℃，具(ju)(ju)(ju)(ju)有(you)電(dian)(dian)(dian)阻(zu)不(bu)易(yi)老化(hua)和(he)(he)良(liang)好的(de)(de)抗氧化(hua)性能(neng)(neng)(neng)。用硅(gui)生產的(de)(de)三氯(lv)氫硅(gui)，可(ke)(ke)配(pei)制(zhi)(zhi)幾百種(zhong)(zhong)硅(gui)樹脂(zhi)潤滑(hua)劑(ji)和(he)(he)防水(shui)(shui)化(hua)合物(wu)等(deng)(deng)。此外，碳化(hua)硅(gui)可(ke)(ke)作磨料(liao)，高(gao)純氧化(hua)硅(gui)制(zhi)(zhi)作的(de)(de)石英(ying)管(guan)(guan)是(shi)(shi)高(gao)純金(jin)(jin)屬冶(ye)煉及照(zhao)明燈(deng)具(ju)(ju)(ju)(ju)的(de)(de)重(zhong)要材(cai)(cai)料(liao)。八十(shi)(shi)年代的(de)(de)紙(zhi)張(zhang)——硅(gui)人們稱硅(gui)為(wei)“八十(shi)(shi)年代的(de)(de)紙(zhi)張(zhang)”。這是(shi)(shi)因(yin)為(wei)紙(zhi)張(zhang)只能(neng)(neng)(neng)記(ji)錄信(xin)息(xi)(xi)(xi)，而硅(gui)不(bu)僅能(neng)(neng)(neng)記(ji)載信(xin)息(xi)(xi)(xi)，還(huan)能(neng)(neng)(neng)對信(xin)息(xi)(xi)(xi)進行處理(li)加工(gong)(gong)以(yi)獲得新的(de)(de)信(xin)息(xi)(xi)(xi)。1945年制(zhi)(zhi)造(zao)的(de)(de)世(shi)界上(shang)電(dian)(dian)(dian)子計算(suan)(suan)機，裝有(you)18000個(ge)(ge)電(dian)(dian)(dian)子管(guan)(guan)、70000只電(dian)(dian)(dian)阻(zu)、10000只電(dian)(dian)(dian)容，整(zheng)(zheng)個(ge)(ge)機器重(zhong)30噸，占地(di)170平方(fang)(fang)米，相當于10間房子大(da)(da)小。而今天的(de)(de)電(dian)(dian)(dian)子計算(suan)(suan)機，由于技術的(de)(de)進步和(he)(he)材(cai)(cai)質的(de)(de)改(gai)善，在(zai)(zai)一個(ge)(ge)指(zhi)甲(jia)蓋(gai)大(da)(da)小的(de)(de)硅(gui)片(pian)上(shang)，可(ke)(ke)以(yi)容納上(shang)萬個(ge)(ge)晶(jing)體管(guan)(guan)；并且有(you)輸入、輸出(chu)、運算(suan)(suan)、存儲和(he)(he)控制(zhi)(zhi)信(xin)息(xi)(xi)(xi)等(deng)(deng)一系(xi)列功(gong)能(neng)(neng)(neng)。微(wei)孔硅(gui)鈣保(bao)(bao)溫材(cai)(cai)料(liao)微(wei)孔硅(gui)鈣保(bao)(bao)溫材(cai)(cai)料(liao)是(shi)(shi)一種(zhong)(zhong)優(you)良(liang)的(de)(de)保(bao)(bao)溫材(cai)(cai)料(liao)。它具(ju)(ju)(ju)(ju)有(you)熱容量(liang)小、機械強度高(gao)、導(dao)(dao)熱系(xi)數(shu)低、不(bu)燃燒、無毒(du)無味、可(ke)(ke)切割、運輸方(fang)(fang)便(bian)等(deng)(deng)特(te)(te)點(dian)，可(ke)(ke)廣(guang)泛用于冶(ye)金(jin)(jin)、電(dian)(dian)(dian)力、化(hua)工(gong)(gong)、船舶(bo)等(deng)(deng)各種(zhong)(zhong)熱力設備及管(guan)(guan)道上(shang)。經測試，節能(neng)(neng)(neng)效益優(you)于石棉(mian)、水(shui)(shui)泥、蛭石和(he)(he)水(shui)(shui)泥珍珠巖等(deng)(deng)保(bao)(bao)溫材(cai)(cai)料(liao)。特(te)(te)種(zhong)(zhong)硅(gui)鈣材(cai)(cai)料(liao)可(ke)(ke)用作催化(hua)劑(ji)載體，在(zai)(zai)石油(you)煉制(zhi)(zhi)、汽車尾氣凈化(hua)等(deng)(deng)多方(fang)(fang)面廣(guang)泛應用。

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