Isihlabathi se-Foundry sisetshenziswa njenge-granular refractory material yokubumba isihlabathi nesihlabathi esiwumgogodla ekukhiqizeni i-Foundry.Endabeni yokusebenzisa ubumba njengesibopho sesihlabathi sokubumba, kuwo wonke amathani ama-castings afanelekayo akhiqizwayo, kuyadingeka ukwengeza ithani elingu-1 lesihlabathi esisha.Ngakho-ke, inani elikhulu lesihlabathi se-Foundry lisetshenziswa ekukhiqizeni isihlabathi.
Ngekhulu le-17, i-China yasebenzisa isihlabathi se-silica njengento yokubumba ukwenza izinto ezifana namawashi, izibuko, amabhodwe kanye nezikhali.Kodwa-ke, iningi lalezo zihlabathi kwakuyisihlabathi se-silica semvelo esinebumba, okungukuthi isihlabathi sasezintabeni nesihlabathi somfula, esasinepulasitiki engcono futhi esasingasetshenziswa ngokuqondile ukwenza isikhunta esibunjiweyo kanye nama-cores.Ngemuva kokuthi ama-castings afake ukukhiqizwa kwenqwaba yezimboni, ikakhulukazi ngemva komshini wokumodela, ukufana kwesihlabathi se-silica semvelo esinobumba simpofu, futhi ikhwalithi yesihlabathi sokubumba kunzima ukuyilawula, engakwazi ukuhlangabezana nezidingo zenqubo.Ngakho-ke, isitshalo sesihlabathi saqalwa ukubhekana nesihlabathi se-silica yemvelo ngokuKhuhla, ukukhetha ukuthola izinhlobonhlobo zesihlabathi se-silica.Ngaphandle kwalokho, isihlabathi se-silica sokwenziwa sibuye senziwa ngokuchotshozwa kwe-silica.Ngasikhathi sinye, iphinde yandise ukusetshenziswa nokuthuthukiswa kokumodela kwesanti ye-non-silicon resin kanye nezinqubo zokwenza umnyombo, futhi ibeke phambili izidingo eziphakeme zekhwalithi yesihlabathi sokuphonsa, njengempushana encane encane, umkhawulo othize omncane, kanye nokwehla. ukusetshenziswa kwe-asidi.Kanjalo, amanye amazwe angenayo imithombo yesanti yekhwalithi ephezulu yobukhulu besihlabathi nawo athuthukise ubuchwepheshe be-silica sand flotation ukuze kuthuthukiswe izinga kanye nekhwalithi yesihlabathi se-silica.

Isihlabathi se-Foundry kufanele sihlangabezane nalezi zidingo ezilandelayo: ① ukuhlanzeka okuphezulu nokuhlanzeka, ukuthatha isihlabathi se-silica njengesibonelo, isihlabathi se-cast iron sidinga i-SiO₂okuqukethwe okungaphezu kuka-90%, izingxenye zensimbi ezisikiwe zidinga i-SiO₂okuqukethwe okungaphezu kwama-97%;② ukumelana nomlilo okuphezulu Iziqu kanye nokuzinza okushisayo;③ Ukwakheka kwezinhlayiyana ezifanele kanye nokwakheka kwezinhlayiyana;④ Ayifakwa kalula yinsimbi ewuketshezi;⑤ Kushibhile futhi kulula ukukuthola.
Kusukela ngo-1951, i-China yenze ukubalwa kwabantu kwemithombo yesihlabathi eyisisekelo ngokulandelana, kodwa ikakhulukazi iseduze nemigqa yezokuthutha kanye namadolobha amakhulu ezimboni.E-Zhelimeng, e-Inner Mongolia, izinqolobane zesihlabathi se-silica zemvelo zibalelwa ezigidini zamathani, futhi ukwakheka kwezinhlayiyana kuseduze nesiyingi, kanye ne-SiO.₂okuqukethwe cishe ku-90%, okulungele kakhulu ukulingisa ezimbonini.Isihlabathi solwandle saseJinjiang, Dongshan, Fujian, the SiO₂okuqukethwe kungu-94 ~ 98%.Kunenombolo enkulu yesihlabathi se-Quaternary river kanye ne-lake sedimentary silica sands e-Duchang, Xingzi, Yongxiu County, Province of Jiangxi.I-SiO₂okuqukethwe cishe kungama-90%.Iqukethe i-sandstone ecebile futhi entekenteke e-Guangzhou nase-Hunan.Lena indawo ka-SiO₂okuqukethwe kungaphezu kuka-96%, okungasetshenziselwa okuqukethwe kwensimbi ephansi, ama-alkaline oxide amancane, usayizi wezinhlayiyana ezifanayo.