Isanti ye-Foundry isetyenziswa njenge-granular refractory imathiriyeli yokubumba isanti kunye nesanti engundoqo kwimveliso ye-Foundry.Kwimeko yokusebenzisa udongwe njengebhondi yesanti yokubumba, kuzo zonke iitoni ze-castings eziqinisekisiweyo eziveliswayo, kuyimfuneko yokongeza itoni ye-1 yesihlabathi esitsha.Ke ngoko, isixa esikhulu sesanti ye-Foundry sisetyenziswa kwimveliso yokuphosa isanti.
Ngenkulungwane ye-17, i-China yasebenzisa isanti ye-silica njengesixhobo sokubumba ukwenza iiwotshi, izipili, iimbiza kunye nezixhobo zokudubula.Nangona kunjalo, uninzi lwesanti yezo ntlabathi yayiludongwe olunesanti yendalo ye-silica, eyile ntlabathi yasezintabeni kunye nesanti yomlambo, eyayinobunzulu beplastiki obungcono kwaye inokusetyenziswa ngokuthe ngqo ukwenza ukubumba okubumba kunye neentsimbi.Emva kokuba i-castings ingene kwimveliso ye-industrial mass, ngakumbi emva komatshini wokulinganisa, ukufana kwesanti ye-silica yendalo enodongwe impofu, kwaye umgangatho wesanti yokubumba kunzima ukuyilawula, engakwazi ukuhlangabezana neemfuno zenkqubo.Ngoko ke, isityalo sesanti saqaliswa ukujongana nesanti ye-silica yendalo ngokuKhuhla, ukukhetha ukufumana iindidi zesanti ye-silica.Ngaphandle koko, isanti ye-silica eyenziweyo yenziwe ngokutyumza i-silica.Kwangaxeshanye, ikwandise ukusetyenziswa kunye nophuhliso lwesanti ye-non-silicon ye-resin yesanti kunye neenkqubo zokwenziwa kondoqo, kwaye ibeka phambili iimfuno eziphezulu kumgangatho wesanti yokuphosa, njengomgubo ocolekileyo omncinci, umda okhethekileyo, kunye nomgangatho ophantsi. ukusetyenziswa kweasidi.Ngaloo ndlela, amanye amazwe angenayo imithombo yesanti ekumgangatho ophezulu yobukhulu besanti aphuhlise iteknoloji ye-silica sand flotation ukuphucula umgangatho kunye nomgangatho wesanti ye-silica.

Isanti ye-Foundry kufuneka ihlangabezane nezi mfuno zilandelayo: ① ukucoceka okuphezulu kunye nococeko, ukuthatha isanti ye-silica njengomzekelo, isanti yentsimbi etyhidiweyo ifuna iSiO.₂umxholo ongaphezulu kwe-90%, iinxalenye zetsimbi ze-sintered zifuna i-SiO₂umxholo ongaphezulu kwama-97%;② ukumelana nomlilo ophezulu Isidanga kunye nokuzinza kwe-thermal;③ Ukumila kwamasuntswana okufanelekileyo kunye nokwakheka kwamasuntswana;④ Ayifakwa lula yintsimbi engamanzi;⑤ Ixabiso eliphantsi kwaye kulula ukulifumana.
Ukusukela ngo-1951, i-China yenze ubalo lwemithombo yesanti esisiseko ngokulandelelanayo, kodwa ubukhulu becala ikufuphi neendlela eziphambili zothutho kunye nezixeko ezikhulu zemizi-mveliso.E-Zhelimeng, e-Inner Mongolia, iindawo zokugcina isanti ye-silica yendalo zifikelela kumakhulu ezigidi zeetoni, kwaye imilo yayo yamasuntswana isondele kwisangqa, kunye neSiO.₂umxholo malunga ne-90%, efanelekileyo kakhulu kwi-industrial casting.Isanti yolwandle yaseJinjiang, iDongshan, iFujian, iSiO₂Umxholo ngama-94 ~ 98%.Kukho inani elikhulu lomlambo we-Quaternary kunye nesanti ye-silica ye-sedimentary e-Duchang, e-Xingzi, kwi-Yongxiu County, kwiPhondo le-Jiangxi.ISiO₂Umxholo umalunga nama-90%.Iqulethe ilitye lentlabathi elityebileyo nelibuthathaka eGuangzhou naseHunan.SiO yakhe₂umxholo ungaphezulu kwe-96%, engasetyenziselwa umxholo wensimbi ephantsi, i-alkaline oxides encinci, i-particle size size.