Cov khib nyiab khov kho hauv Suav teb feem ntau yog cov tailings, cov tshauv ya, cov thee gangue, slag smelting, thee-fired slag thiab desulfurization gypsum. Kev npaj cov ntaub ntawv tsim kho los ntawm cov khib nyiab khov kho tau nyiam ntau dua thiab ntau dua. Cov kws tshawb fawb tau txhim kho qhov kev siv cov khib nyiab khov kho hauv kev lag luam khoom siv hauv tsev los ntawm kev txhim kho thiab kev tshawb fawb thiab kev tsim kho cov khoom siv thiab thev naus laus zis. Tib lub sijhawm, ntau lub tebchaws tau tshaj tawm cov cai thiab cov cai txhawb nqa los txhawb cov tuam txhab kev txaus siab rau kev siv cov khib nyiab khov kho, yog li txhim kho qhov cuam tshuam ntawm cov khib nyiab khov kho hauv kev lag luam rau ib puag ncig mus rau qee qhov. Raws li tus neeg tsim khoom ntawm cov hlau tailings sib tsoo zeb, pebhlau tailings ntsug roller zeb tau siv dav hauv cov hlau tailings xuab zeb sib tsoo cov ntaub ntawv tsim kho vaj tse siv dav dav. HCMilling (Guilin Hongcheng) yuav qhia txog cov thev naus laus zis ntawm kev npaj cov ntaub ntawv tsim kho vaj tse los ntawm hlau tailings.

1. Cov cement clinker uas tau muab tso rau hauv cov cement

Cov hlau tailing muaj ntau cov hlau, uas tuaj yeem hloov cov hmoov hlau ua cov khoom siv raw rau kev tsim cov cement clinker. Kev hlawv cov cement clinker nrog limestone, quartz xuab zeb thiab cov hlau tailings ua cov khoom siv raw tuaj yeem txo qhov kub calcination thiab tus nqi ntawm cov cement, tab sis qhov sib tov ntau dhau yuav txo qhov muaj zog ntawm cov cement. Tam sim no, qhov ntau ntawm cov hlau tailings siv rau calcining cement clinker tsuas yog li 15%. Nws yog qhov ceev kom tsim cov khoom siv tshiab thiab cov thev naus laus zis tshiab los txhim kho qhov ntau ntawm cov hlau tailings thiab xyuas kom meej qhov zoo ntawm cov khoom cement.

2. Cov pob zeb sib xyaw ua ke

Qhov nyuaj siab ntawm cov hlau tailings feem ntau yog los ntawm theem quartz sab hauv, uas qhov loj me me ze rau qee cov xuab zeb dej ntuj thiab cov xuab zeb tsim tawm, thiab tuaj yeem sib xyaw rau hauv cov pob zeb ua ke. Cov pob zeb nrog 28d lub zog ntawm kwv yees li 40MPa tuaj yeem npaj los ntawm kev siv cov hlau tailings nrog qhov loj me me dua 1 hli los hloov cov xuab zeb dej ntuj ua cov pob zeb zoo. Raws li kev ua kom zoo dua ntawm kev sib sau ua ke, kev siv cov hlau tailings thiab cov xuab zeb ua los ntawm tshuab ua cov pob zeb tsis tsuas yog ua tau raws li qhov xav tau ntawm cov pob zeb rau cov ntaub ntawv, tab sis kuj muaj kev ruaj khov zoo dua li cov hlau tailings thiab cov xuab zeb dej ntuj, uas yog qhov zoo dua rau kev tswj hwm qhov zoo ntawm cov pob zeb. Raws li cov txheej txheem kev pabcuam tam sim no, txhawm rau txhim kho tus nqi rov qab hlau, cov hlau tailings me me tau txais finer thiab finer, uas nyuaj rau ua tau raws li tus qauv ntawm cov pob zeb ntxhib thiab siv rau cov pob zeb ib txwm muaj.

3. Cov khoom sib xyaw ua ke ntawm cov pob zeb

Cov khoom siv ntxiv rau hauv cov pob zeb feem ntau yog ua los ntawm cov khoom siv amorphous siliceous, calcareous thiab txhuas, uas ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov compactness, impermeability thiab durability ntawm cov pob zeb. Lawv tuaj yeem txo qhov kev siv cement thiab txo qhov kub ntawm hydration tib lub sijhawm. Yog li ntawd, nws yog ib qho tseem ceeb kom nrhiav cov khoom siv ntxiv rau hauv cov pob zeb rau kev txhim kho kev lag luam cement. Cov theem tseem ceeb hauv cov pob zeb hlau feem ntau yog quartz, uas muaj me ntsis pozzolanic kev ua ub no hauv lub xeev ntuj. Yuav ua li cas txhim kho "pozzolanic kev ua ub no" ntawm cov pob zeb hlau tau dhau los ua lub ntsiab lus tseem ceeb ntawm cov kws tshawb fawb tam sim no. Raws li ib qho ntawm cov txheej txheem siv feem ntau rau kev ua kom cov pob zeb hlau ua haujlwm, kev sib tsoo tshuab tuaj yeem txo qhov zog ua kom cov pob zeb hlau ua haujlwm thiab tsim ntau qhov tsis xws luag thiab cov yas deformation. Cov kev tshawb fawb qhia tau hais tias kev sib tsoo tshuab tuaj yeem txhawb nqa pozzolanic kev ua ub no ntawm cov theem pob zeb ib txwm muaj hauv cov pob zeb hlau ua haujlwm. Raws li qhov loj me ntawm cov khoom siv av ua haujlwm txo qis, quartz tuaj yeem cuam tshuam nrog Ca (OH) 2 hauv cov cement slurry los tsim cov amorphous hydrated calcium silicate gel thiab ettringite siv lead ua thiab lwm yam khoom hydration. Cov kev tshawb fawb qhia tau hais tias thaum lub tshuab sib tsoo ntau tshaj 40 feeb, lub kaum ntse ntse ntawm cov hlau tailings pom tseeb txo qis, ntau cov khoom me me tau pom, thiab qhov sib xws maj mam txhim kho. Hauv cov hlau tailings calcium oxide system, cov hlau siliceous tailings ntawm kev sib tsoo tshuab tuaj yeem sib xyaw nrog 30% los npaj 32.5 cement. Nyob rau hauv qhov xwm txheej ntawm cov dej qis binder ratio, cov hmoov hlau tailings zoo tuaj yeem txhawb nqa cov dej noo thaum ntxov ntawm cov tshuaj sib xyaw ua ke, ua rau cov qauv pore ntawm mortar compact dua, thiab txhim kho lub zog thaum ntxov. Kev nce ntawm thaj chaw tshwj xeeb ntawm cov hlau tailings tsis muaj qhov cuam tshuam pom tseeb rau kev txhim kho nws cov ntsuas kev ua haujlwm; Kev hloov pauv ntawm qhov kub kho tuaj yeem ua rau cov ntsuas kev ua haujlwm nce ntxiv ntawm theem thaum ntxov (7d), tab sis muaj qhov cuam tshuam me ntsis rau cov ntsuas kev ua haujlwm ntawm theem lig (28d). Rau cov hlau tailings slag composite system, cov ntsuas kev ua haujlwm tuaj yeem txhim kho los ntawm kev txhim kho lub tshuab sib tsoo, yog li txhim kho lub zog ntawm cov pob zeb. Kev siv cov neeg sawv cev txo dej kom tsim nyog tuaj yeem ua rau cov ntsiab lus ntawm cov hlau tailings hauv cov pob zeb ib txwm muaj los ntawm 30% txog 40%. Kev sib tsoo cov hlau tailings tuaj yeem txhim kho qhov kev sib tsoo zoo los ntawm nws tus kheej cov nyhuv, yog li txhawb nqa cov pozzolanic kev ua haujlwm ntawm cov hlau tailings. Los ntawm kev ua kom zoo dua qhov sib piv ntawm cov hlau tailings, slag, clinker thiab gypsum composite cementitious cov ntaub ntawv, ultra-high performance concrete nrog kev ua tau raws li tus qauv hauv tebchaws tuaj yeem npaj tau.

HLM cov hlau tailings ntsug roller zeb 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.