Matope odulidwa ndi osakaniza ufa wa miyala ndi madzi omwe amapangidwa panthawi yodula ndi kupukuta marble ndi granite. Madera ambiri kumpoto kwa dziko lathu ndi maziko ofunikira opangira miyala, ndipo matope ambiri odulidwa amapangidwa chaka chilichonse, ndipo kuyika kwake kumatenga malo ambiri a nthaka. Ufa wa miyala uli ndi kapangidwe kabwino ndipo ndi wovuta kutaya. Ndi wosavuta kuwuluka mumlengalenga mphepo yamphamvu, ndipo umalowa mumtsinje ndi madzi amvula masiku amvula, zomwe zimapangitsa kuti chilengedwe chiipire kwambiri.
Miyala yayikulu ya gangue mu matope odulidwa ndi monga feldspar, quartz, calcite, dolomite, amphibole, ndi zina zotero. Miyala yayikulu yachitsulo ndi zonyansa ndi monga silicate yachitsulo monga chitsulo chamakina, magnetite, iron oxide, pyrite, ndi biotite. Pakadali pano, njira yonse yogwiritsira ntchito matope odulidwa makamaka ndikupanga njerwa zodzaza ndi mpweya ndi kupanga zinthu zopangira ceramic mutachotsa zonyansa. Yoyamba ili ndi mphamvu zambiri zokonzera ndipo yomaliza ili ndi phindu lalikulu pazachuma.
Kafukufuku wa phindu
Munkhaniyi, kafukufuku wathunthu wogwiritsa ntchito ndi kuyesa ubwino wa matope oyeretsera m'dera la Jining akuchitika. Miyala yamtengo wapatali mu matope oyeretsera ndi feldspar, chitsulo chamakina, chitsulo chamagetsi, ndi zina zotero, ndipo zonyansa zovulaza ndi limonite, biotite, muscovite, calcite, dolomite, hornblende, ndi zina zotero. Kukula kwa zinthu sikofanana, tinthu tating'onoting'ono timakhala pakati pa 1-4mm ndi matope ochepa a -0.037mm. Pakati pawo, chitsulo chamakina chomwe chimapangidwa panthawi yokonza ndi chitsulo chamagetsi chomwe chili mu miyala yosaphika chimatha kulekanitsidwa ndi maginito kukhala zinthu zosakanikirana ndi chitsulo. Pambuyo polekanitsa maginito mwamphamvu, zonyansa zomwe zili ndi chitsulo monga limonite, biotite, ndi amphibole zimatha kuchotsedwa. Zinthu zosakanikirana ndi miyala, gawo lililonse la maginito lingagwiritsidwe ntchito ngati njerwa zolowa mpweya kapena simenti, kuti tikwaniritse cholinga chogwiritsidwa ntchito mokwanira.
1.Kudziwa momwe njira ikuyendera
Kuphatikiza makhalidwe a chitsanzo cha utuchi kuti mudziwe njira yophikira: miyala yaiwisi imasefedwa kudzera mu ma meshes 30-+30 ma mesh coarse-grain grind mpaka -30 ma mesh.
——-30 maukonde osakanikirana achitsulo olekanitsidwa ndi ng'oma yolekanitsa maginito + mbale yathyathyathya + mphete yoyima + mphete yoyima yochotsa chitsulo champhamvu cha maginito - concentrate imagawidwa m'magulu a +300 maukonde a feldspar concentrate products ndi -300 maukonde amatope abwino——Kenako matope abwino amagwiritsidwa ntchito kuchotsa chitsulo kawiri kudzera mu slurry yamagetsi kuti apeze mankhwala abwino kwambiri a ufa.
2.Mayeso olekanitsa maginito a miyala yaiwisi
Mchere wosaphika unasefedwa ndi ma meshes 30, ndipo zotsatira za kusanthula zikuwonetsedwa mu Table 1.
Gome 1. Zotsatira za Kuyesa Kupindula ndi Kuwunika
Pukutani miyala yamtengo wapatali yokhala ndi zokolola za 17.35% mpaka -30 mesh, sakanizani ndi chinthucho pansi pa sefa, ndipo tsatirani njira yodziwika bwino yolekanitsira maginito ya drum magnetic separator + flat plate + vertical ring + vertical ring. Kuyenda kwa njirayo kwawonetsedwa mu Chithunzi 1, ndipo zotsatira za mayeso zawonetsedwa mu Table 2.
Chithunzi 1. Kuyenda kwa njira yoyesera yolekanitsa miyala yaiwisi pogwiritsa ntchito maginito.
Gome 2. Zotsatira za mayeso ochiritsira olekanitsa maginito
Mchere wosaphika umafufuzidwa + kupukutidwa kwa miyala + njira yoyesera yochotsera chitsulo katatu, ndipo zinthu zosakanikirana zapakati ndi zochepa zitha kupezeka ndi phindu la 92.57%, kuchuluka kwa Fe2O3 kwa 0.525% ndi kuyera kwa 36.15%. Iyenera kuganiziridwa kuti itsuke chitsulo chosakanizika bwino ndi silicate yachitsulo mu matope abwino ndi makina abwino apakati, apamwamba amagetsi opangidwa ndi magetsi pambuyo pogawa.
3. Kuchotsa chitsulo kuchokera ku matope abwino
Kuchuluka kwachiwiri kwa Lihuan kumatulutsidwa kuchokera ku matope abwino omwe ali pansi pa -300 mesh kudzera mu overflow, ndipo njira yochotsera chitsulo kawiri ndi makina opopera a electromagnetic slurry imagwiritsidwa ntchito kuti mupeze ufa wabwino kwambiri. Kuyenda kwa njirayo kukuwonetsedwa pa Chithunzi 2, ndipo zotsatira za mayeso zikuwonetsedwa pa Table 3.
Chithunzi 2. Kuyenda kwa njira yoyezera kuchotsa chitsulo cha matope abwino
Gome 3. Chizindikiro chochotsera chitsulo cha matope abwino
Pambuyo poyesa Lihuan concentrate, kuyera kwa +300 mesh medium-grain feldspar concentrate kunawonjezeka kuchoka pa 36.15% kufika pa 56.49%, ndipo kuyera kwa matope abwino kunachepa kufika pa 23.07%. -300 mesh fine sludge imachotsedwa mu chitsulo kawiri ndi electromagnetic slurry, ndipo ufa wabwino wa ceramic-grade wokhala ndi zokolola za 42.31% ndi kuyera kwa 41.80% ungapezeke.
3. Mayeso a ndondomeko yonse
Mikhalidwe yonse yoyesera ndi zizindikiro zoyeserera njira yonse.
Chithunzi 3. Njira yonse yoyesera matope odulira
Gome 4. Zizindikiro zoyesera za ndondomeko yonse
Chomangira: Kutentha kwa mabisiketi 1200℃
Mchere wa dothi wodulidwa umasefedwa + nthaka + kugawanika kofooka kwa maginito + mbale yathyathyathya + mphete yowongoka + mphete yowongoka + njira yogawa maginito ya electromagnetic slurry kuti mupeze chitsulo chokhala ndi phindu la 0.32% ndi TFe grade ya 62.35%. Ndi phindu la 38.56% ndi kuyera kwa 54.69% kwa zinthu za feldspar zapakati pa tirigu wapakati komanso phindu la 42.31% la zinthu za ceramic grade concentrate za ufa wabwino wa 41.80%; phindu lonse la maginito ndi 18.81%, Zingagwiritsidwe ntchito ngati zopangira njerwa zolowa mpweya.
Njira yaukadaulo iyi imalola kugwiritsa ntchito bwino mipata ya matope odulidwa, ndipo ingathandize kwambiri pazachuma komanso kuteteza chilengedwe.
Nthawi yotumizira: Marichi-04-2021