Raws li cov lus dab neeg thaum ub, cov neeg tsim ua khob yog cov neeg ua lag luam Phoenician. Rov qab los ntawm lawv cov kev mus ncig, lawv tau nres ntawm cov kob thiab taws teeb. Los ntawm lub tshav kub siab, cov xuab zeb tau pib yaj thiab tig mus rau hauv lub iav. Iav yog ib qho tshuaj amorphous thiab hauv qee yam ntawm nws lub zog ua kua. Qhov no yog ib qho ntawm ob peb cov ntaub ntawv uas tuaj yeem ua dua tshiab ib puas feem pua yam tsis poob nws lub zog.
Cov Lus Qhia
Kauj ruam 1
Iav muaj dej qab zib, kua qaub thiab 70% quartz xuab zeb. Txiv qaub impurities muab nws gloss thiab tsis kam rau ntau yam tshuaj lom neeg.
Kauj ruam 2
Iav yog cov khoom siv ruaj khov thiab hnav zoo-hnav. Cov khib nyiab los ntawm nws yog pov tseg hauv thaj chaw ib puag ncig ntau pua xyoo. Los ntawm kub tshaj plaws, lawv tawg thiab crumble. Maj mam tig mus rau hauv cov khoom tom kawg zom - tsom iav iav, txawv txawv rau cov xuab zeb.
Kauj ruam 3
Iav cov khoom uas tau pab lawv lub sijhawm yog yooj yim rov ua dua tshiab. Daim iav yog remelted. Ntxiv mus, nws yog 40 zaug pheej yig dua los ua ib yam khoom tshiab los ntawm cov iav tawg dua los ua qhov zoo ib yam los ntawm thawj cov khoom siv raw.
Kauj ruam 4
Tsis yog txhua lub iav yog qhov tsim nyog rau kev rov ua dua tshiab. Tais diav ntim mov, cov khoom siv tais diav, thiab cov khoom tawg iav tsis tuaj yeem yaj cia.
Kauj ruam 5
Cov khib nyiab iav yuav tsum tau cais cov xim. Qhov no yog vim qhov tseeb tias txhua lub xim muaj nws tus taw tes melting. Sorted iav yog ua tib zoo tsoo, nchuav rau hauv cov pwm thiab remelted nyob rau hauv lub muffle rauv mus rau hauv lub khob loj. Nws yog qhov yuav tsum tau ntxiv cov khoom siv thawj (silicon, txiv qaub thiab dej qab zib). Thiab twb tau los ntawm daim iav re-melted, cov khoom lag luam tshiab tau pov.
Kauj Ruam 6
Txhawm rau muab lub khob rau cov xim yam xav tau, ntau yam hlau oxides yuav tsum muab ntxiv rau nws. Piv txwv, uranium oxide yuav muab daj tint, thiab npib tsib xee yuav pleev xim rau xim, thaum hlau oxide yuav ua rau iav xiav thiab tseem muaj xim av liab, raws li cov tshuaj lom.
Kauj Ruam 7
Melting point ntawm iav yog heev thiab nyob ntawm nws cov xim. Lub iav tsaus dua yuav tsum tau rov ua dua tshiab, qhov kub siab dua yog xav tau nws rov qab los. Txhawm rau muab lub khob rau cov duab uas xav tau, koj yuav tsum ua kom sov li ntawm 1000 degrees Celsius.
