Hlau yog ib qho ntawm cov khoom siv xav tau niaj hnub no. Nws muaj qhov sib xyaw ntawm cov hlau nrog cov pa roj carbon, qee zaum ntxiv cov ntsiab lus tau muab ntxiv los muab cov yam xav tau rau cov khoom siv. Cov hlau yog tsim los siv cov txheej txheem thev naus laus zis hauv qhov cub tshwj xeeb. Nrhiav cov hlau yog txheej txheem nyuaj rau txheej txheem tshuab.
Cov Lus Qhia
Kauj ruam 1
Kev tsim hlau yog pib nrog ore mining. Hlau ore yog ntuj tso hlau oxide, i.e. hlau nyob rau hauv nrog cov pa. Kom tau txais hlau, nws yog qhov yuav tsum tau ua kom nws huv los ntawm oxygen thiab pob zeb los ntawm yaj. Rau qhov no, cov hlau ua kom zoo nkauj tau muab tso rau hauv qhov cub tshwj xeeb, qhov chaw nws ua tiav nyob hauv qab qhov dej ntab kub. Qhov kub siab hauv qhov cub hluav taws xob ncav cuag li 2000 ° C.
Kauj ruam 2
Cov hlau ua tiav tau muab xa mus rau qhov cub tawg me me siv cov tsheb tshwj xeeb tsim los thauj cov hlau molten. Yuav kom tau cov hlau, kua qaub thiab oxygen ua ntej ntxiv. Cov txiv qaub yog siv los tshem tawm qhov tsis txaus ntshai ntawm cov khoom - slag. Ua raws li hom hlau, coke thiab dolomite, muaj cov ntxhia tshwj xeeb ua ke ntawm cov calcium thiab ntsev ntsev, kuj tuaj yeem hais ntxiv.
Kauj ruam 3
Tom qab ntawd qhov sib tov hloov mus ua kua hlau ua kua kub thaum txog 2000 ° C. Lub tshuab hlau molten xa mus rau cov khw muag khoom tshwj xeeb. Qhov zoo ntawm cov hlau uas tau txais yog txiav txim siab los ntawm qhov muab coj mus kuaj.
Kauj ruam 4
Hauv kauj ruam tom ntej, kev tsim khoom hlau pib hauv kev lag luam steelmaking. Kev cuam tshuam ntxiv tau pov rau hauv cov hlau - kos hlau, uas yuav pab tswj cov taw tes melting thiab tshaj tawm cov khoom tsim nyog rau cov khoom siv. Lwm yam hlau siv feem ntau siv, xws li txhuas. Kev ua noj yog ua tiav ntawm qhov ntsuas kub ntawm 1300-1700 ° C thiab dej siv los siv tiv thaiv kom kub nyhiab.
Kauj ruam 5
Cov hlau tag yog xa mus rau chav ua haujlwm casting, qhov twg billets yog nchuav los ntawm lub rwj tshwj xeeb. Tom qab ntawd qhov chaw ntsaws poob rau hauv lub tshuab dov thiab raug dov rau ntawm cov ntawv uas siv tshwj xeeb. Tom qab ntawd, cov hlau tau galvanized nyob rau hauv da dej nrog molten zinc thiab xa rau cov zaub mov xa tuaj, los ntawm qhov twg nws xa mus rau lwm qhov kev lag luam kom tau txais cov khoom kawg - cov khoom lag luam steel.
