Marara emumaindasitiri akawanda muChina anosanganisira marara emumaindasitiri, anopisa nhunzi, gangue yemarasha, slag yekunyungudutsa, slag inopiswa nemarasha uye gypsum inonyungudutsa. Kugadzirwa kwezvinhu zvekuvaka kubva mumarara akaomarara kwave kukwezva kutariswa kwakawanda. Vaongorori vakavandudza mwero wekushandiswa kwemarara akaomarara muindasitiri yezvinhu zvekuvaka kuburikidza nekuvandudza nekutsvaga nekugadzira michina netekinoroji. Panguva imwe chete, nyika dzakasiyana dzakaburitsa mitemo nemirau inotsigira kukurudzira kufarira kwemabhizinesi kushandisa marara akaomarara, nokudaro zvichivandudza kukanganisa kwemarara akaomarara eindasitiri panharaunda kusvika pamwero wakati. Semugadziri wemichina yekukuya yesimbi, kambani yeduchigayo chesimbi chakamira chinotenderera rave richishandiswa zvakanyanya muchirongwa chekushandisa zvizere zvinhu zvekuvaka zvesimbi kubva musimbi. HCMilling (Guilin Hongcheng) ichaunza tekinoroji yekugadzira zvinhu zvekuvaka kubva musimbi kubva musimbi.

1. Simende yakakanyiwa necalcium

Kugadzira simbi yakapfuma musimbi, iyo inogona kutsiva hupfu hwesimbi sezvinhu zvekugadzira simende clinker. Kupisa simende clinker ne limestone, jecha re quartz uye simbi tailings sezvinhu zvekugadzira kunogona kuderedza tembiricha ye calcination uye mutengo wesimende, asi huwandu hwekusanganisa hwakaganhurirwa, uye huwandu hwekusanganisa hwakanyanya hunoderedza simba resimende zvakanyanya. Parizvino, huwandu hwesimbi tailings hunoshandiswa pakugadzira calcining simende clinker hungori 15%. Zvakakosha kugadzira michina mitsva netekinoroji itsva yekuvandudza huwandu hwesimbi tailings uye kuona kuti zvigadzirwa zvesimende zvakanaka.

2. Musanganiswa wekongiri

Kuomarara kwakanyanya kwesimbi dzinobva muchikamu chemukati chequartz, icho saizi yacho iri pedyo nejecha remurwizi rechisikigo nejecha rakagadzirwa, uye chinogona kusanganiswa nekongiri sejecha remugungwa. Kongiri ine simba re28d reinenge 40MPa inogona kugadzirwa nekushandisa simbi dzinobva muhukuru hwesimbi dziri pasi pe1mm kutsiva jecha remurwizi rechisikigo sejecha rakatsetseka. Zvichibva pakugadzirisa kuyera kwesimbi dzinobva musimbi, kushandiswa kwesimbi dzinobva musimbi nejecha rakagadzirwa nemuchina sejecha remugungwa hakungogumiri pazvinodiwa nekongiri yezvinhu chete, asiwo kune kugadzikana kuri nani pane kwesimbi dzinobva musimbi nejecha remurwizi rechisikigo, izvo zvinobatsira kudzora mhando yekongiri. Kana tichitaura nezvemaitiro ekuvandudza simbi, kuti simbi idzoke zvakanaka, simbi dzinobva musimbi dziri kuwedzera kutsetseka, izvo zvakaoma kusangana nechiyero chesimbi dzakatsetseka uye dzinoshandiswa pakongiri yakajairika.

3. Musanganiswa wezvicherwa zvekongiri

Zvicherwa zvinosanganiswa zvakanyanya zvinoumbwa nezvinhu zvisina chimiro, calcareous uye aruminiyamu, izvo zvinoita basa rakakosha mukuvandudza kuomesesa, kusapinda mvura uye kugara kwenguva refu kwekongiri. Zvinogona kuderedza kushandiswa kwesimende uye kuderedza kupisa kwemvura panguva imwe chete. Nokudaro, zvakakosha kuwana zvicherwa zvitsva zvekusimudzira indasitiri yesimende. Chikamu chikuru chezvicherwa muzvicherwa zvesimbi chinowanzova quartz, iyo ine basa shoma repozzolanic muchimiro chechisikigo. Maitiro ekuvandudza "basa repozzolanic" rezvicherwa zvesimbi rave nyaya huru yevaongorori vemazuva ano. Seimwe yenzira dzinoshandiswa zvakanyanya pakuita kuti zvicherwa zvesimbi zvishande, kukuya kwemuchina kunogona kuderedza simba rekuita kuti zvicherwa zvesimbi zvishande uye kugadzira zvikanganiso zvakawanda uye kushanduka kwepurasitiki. Tsvagiridzo inoratidza kuti kukuya kwemuchina kunogona kukurudzira basa repozzolanic rezvikamu zvezvicherwa zvakajairika muzvicherwa zvesimbi. Sezvo saizi yezvicherwa zvakakuyiwa nemekanistiri ichiderera, quartz inogona kuita neCa (OH) 2 mu slurry yesimende kugadzira amorphous hydrated calcium silicate gel uye ettringite crystal nezvimwe zvigadzirwa zve hydration. Ongororo iyi inoratidza kuti kana kugayiwa kwesimbi kwakapfuura maminetsi makumi mana, kona yakapinza yesimbi inodzikira zviri pachena, zvidimbu zvidiki zvakawanda zvinoratidzwa, uye kufanana kunovandudzwa zvishoma nezvishoma. Muhurongwa hweanhydrite iron tailing calcium oxide, siliceous iron tailing yesimbi inogona kusanganiswa ne30% kugadzira simende ye32.5. Pasi pehuwandu hwemvura yakadzikira, upfu hwesimbi hunogona kukurudzira zvakanyanya kunyoroveswa kwesimbi yakagadzirwa nesimbi, kuita kuti chimiro chepore chemota chive chidiki, uye kuvandudza simba rekutanga. Kuwedzera kwenzvimbo chaiyo yesimbi haina mhedzisiro yakajeka pakuvandudza indekisi yayo yebasa; Kuchinja kwekupisa kunogona kuwedzera zvakanyanya indekisi yebasa pakutanga (7d), asi hakuna mhedzisiro yakawanda pane indekisi yebasa padanho rekupedzisira (28d). Kune sisitimu yesimbi slag composite, indekisi yebasa inogona kuvandudzwa nekuvandudza mashandiro ekugayiwa, nokudaro zvichivandudza kugara kwenguva refu kwekongiri. Kushandisa zvine musoro kwemushonga wekuderedza mvura kunogona kuwedzera huwandu hwesimbi mukongiri yakajairika kubva pa30% kusvika 40%. Kukuya kwesimbi kunogona kuvandudza kushanda zvakanaka kwekukuya kuburikidza nekushanda kwayo, nokudaro zvichikurudzira kushanda kwesimbi. Nekuvandudza chiyero chesimbi, slag, clinker uye gypsum composite cementitious materials, kongiri inoshanda zvakanyanya uye inoshanda zvinoenderana nezvinodiwa nenyika inogona kugadzirwa.

Mashizha esimbi eHLM chigayo chinotenderera chakamira for iron tailings produced by HCMilling(Guilin Hongcheng) is the equipment for grinding iron tailings, which provides good equipment support for the technology of preparing building materials from iron tailings. It can process 80-600 mesh iron tailings with an output of 5-200t/h. If you have related equipment requirements, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com.