Hom pob zeb crushed: piav qhia, yam ntxwv, Scope thiab keeb kwm

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cov khoom tsim los ntawm crushing ntau yam pob zeb nyuaj los yog ua cov khoom pov tseg yog hu ua crushed pob zeb. Cov khoom siv inorganic no, uas zoo li lub pob zeb me me, yog siv dav hauv ntau qhov chaw ntawm tib neeg kev ua si. Ntau hom pob zeb crushed, nyob ntawm nws lub cev thiab cov yam ntxwv, yog siv rau hauv lub peev thiab kev tsim kho vaj tse, txoj kev, kev tsheb ciav hlau, kev tsim cov khoom siv ntxiv dag zog, thiab kev npaj toj roob hauv pes.

Ntau yam ntawm cov pob zeb crushed thiab qhov twg siv txhua yam

pob zeb crushed yog cais los ntawm keeb kwm. Qhov no yog, ua ntej ntawm tag nrho cov, hom pob zeb uas nws yog tsim. Cov neeg tsim khoom ib txwm muab cov ntaub ntawv tsim nyog. Lub hauv paus chiv keeb ntawm crushed pob zeb characterizes nws zoo, thiab li no lub Scope ntawm nws daim ntawv thov. Lub ntsiab hom pob zeb crushed los ntawm keeb kwm yog muab faib ua:

• Granite. Qhov no yog ib qho ntawm cov khoom siv zoo tshaj plaws ntawm gravel. Nws yog tau los ntawm cov pob zeb tawv, ib qho ntawm feem ntau hauv ntiaj teb. Granite pob zeb hais txog igneous (primary) pob zeb thiab yogejected rau saum npoo thiab solidified magma. Granite yog tsim los ntawm ntau cov muaju: quartz, spar, mica, thiab lwm yam. Nws muaj xim liab, paj yeeb thiab grey. Gravel hom crushed pob zeb yog siv rau kev tsim kho thiab toj roob hauv pes kev npaj, txoj kev thiab railway khoom, kua, hniav tsim.
• Gravel. Crushed pob zeb ua los ntawm sifting los yog crushing pob zeb. Nws muaj yuav luag tib lub zog li granite, tab sis muaj cov hluav taws xob qis dua thiab pheej yig dua. Gravel hom crushed pob zeb yog siv rau cov pob zeb, pob zeb ua vaj tse, kev ua haujlwm hauv paus thiab kev tsim kho.
• Limestone. Lub pob zeb crushed no yog cov khoom ntawm crushing sedimentary (secondary) pob zeb - limestone, lub ntsiab feem ntawm uas yog calcite. Limestone thiab dolomite crushed pob zeb yog qhov qis dua hauv lub zog rau pob zeb thiab granite. Nws yog siv hauv kev tsim kho thiab tsim cov khoom siv pob zeb.
• Slag. Qhov no yog cov khoom ntawm crushing pov tseg los ntawm metallurgy ntau lawm. Lub ntsiab kom zoo dua ntawm xws li rubble yog tus nqi qis. Feem ntau yog siv los ua ib daim ntawv rau kev npaj cov pob zeb.
• Secondary crushed pob zeb. Cov khoom ntawm crushing siv khib nyiab - cib, pob zeb, asph alt. Cov pob zeb zoo li no tsis zoo nyob rau hauv tag nrho cov yam ntxwv rau cov khoom tsim los ntawm cov khoom siv ntuj tsim, tab sis tseem yog siv los ua ib qho kev sib sau ua ke rau cov pob zeb, cov chaw hauv kev, ntxiv dag zog rau cov av tsis muaj zog, thiab kev tsim kho av.

Crushed pob zeb ntau lawm

Crushed pob zeb ntau lawm muaj ob pebtheem:

• pob zeb pob zeb;
• tsheb thauj mus los (yog tias tsim nyog);
• ntau theem ntawm crushing;
• sorted by feem.

Lub ntsiab theem ntawm crushed pob zeb ntau lawm yog crushing. Cov duab thiab qhov loj ntawm cov nplej uas tau tshwm sim nyob ntawm qhov kev ua haujlwm no. Crushing yog nqa tawm nyob rau hauv 2-4 lub voj voog ntawm cov cuab yeej tshwj xeeb - crushing tshuab. Nyob ntawm txoj kev sib tsoo, muaj ntau hom crushed pob zeb crushers:

• Lub puab tsaig - ntsia ntawm thawj theem ntawm crushing. Lub hauv paus ntsiab lus ntawm kev ua haujlwm yog shockless crushing ntawm pob zeb ntawm ob daim hlau.
• Centrifugal. Cov crushers no feem ntau yog siv los tsim cov pob zeb zoo ntawm cov tawv tawv siv hauv kev tsim kho.
• Cone crushers yog ib qho ntawm cov khoom kim tshaj plaws crushed pob zeb. Lawv lub ntsiab kom zoo dua yog versatility. Cov tshuab crushing zoo li no tuaj yeem tsim cov pob zeb crushed ntawm ib feem thiab txawm tias cov xuab zeb dag.
• Rotary. Hauv cov tshuab no, cov pob zeb crushing yog ua los ntawm kev cuam tshuam lub zog. Lub pob zeb tau ntim rau ntawm kev kub ceev ntau zaus tsoo cov phaj cuam tshuam thiab tsoo kom txog thaum nws ntog rau hauv qhov chaw tawm ntawm qhov ntsuas.

Thaum kawg, ua ntej xa khoom mus rau cov neeg siv khoom, cov pob zeb crushed tau muab faib ua feem. Kev ua haujlwm yog nqa tawm ntawm cov khoom siv hu ua screen. Cov tshuab no tuaj yeem nyob ruaj khov lossis raug tshem tawm. Thaum lub sij hawm kev tshuaj ntsuam xyuas, lub pob zeb crushed dhau los ntawm ob peb vibrating sieves nrog lub qhov ntawm ntau yam diameters. Nyob rau txhua tus ntawm lawv crushed pob zeb yog sib caistsim muaj pawg.

pob zeb fractions

Tom qab crushing nplej ntawm ntau qhov ntau thiab tsawg tau txais. Rau kev siv ntxiv, cov pob zeb crushed yog txheeb raws li qhov loj me. Ib feem - qhov siab tshaj plaws ntawm tus nqi ntawm ib qho nplej (pob zeb). Hom crushed pob zeb raws li feem ntau yog muab faib ua lub ntsiab thiab nrog. Qhov loj yog los ntawm 5 mus rau 70 mm nyob rau hauv loj. Qhov ntau thiab tsawg ntawm cov seem thiab tshem tawm - los ntawm 0 mus rau 40 mm. Rau kev siv tshwj xeeb, hom pob zeb crushed ntawm cov feem tshwj xeeb yog tsim: 70-120 mm thiab 120-150 mm.

pob zeb crushed yog cov khoom siv pob zeb tseem ceeb. Granite crushed pob zeb loj 5-20 hli yog nyob rau hauv qhov kev thov loj tshaj plaws. Cov khoom siv zoo li no yog siv rau hauv kev tsim cov pob zeb, asph alt thiab cov khoom siv ntxiv dag zog. Granite crushed pob zeb ntawm cov feem loj (20-45, 20-65, 25-60, 40-70 mm) kuj yog heev nyob rau hauv kev thov nyob rau hauv kev ua lag luam, nws yog siv rau railway embankments, nyob rau hauv kev tsim kho thaum ntxiv dag zog rau lub hauv paus thiab nteg foundations, raws li zoo raws li ib tug ntau yam ntawm cov khoom. ib txheej cushion nyob rau hauv kev tsim kho.

Rau kev tsim cov pob zeb, xws li cov pob zeb loj loj yog siv: pob zeb ntuj crushed pob zeb, gravel thiab gravel crushed pob zeb, aggregate los ntawm moj tej tawg rauv slag. Cov pob zeb siv hauv kev tsim kho tuaj yeem yog roob, dej thiab hiav txwv. Qhov kawg ob, vim lawv cov polished nto, muaj qhov phem tshaj adhesion. Pob zeb crushed pob zeb rau kev tsim kho yog tsim los ntawm crushing ntuj pob zeb. Cov hom ntawm cov pob zeb crushed no muaj qhov ntxhib saum npoo thiab lub ntsej muag zoo nkauj, vim lawv muajzoo dua gravel, adhesion rau binders. Qhov zoo ntawm pob zeb thiab pob zeb crushed yog tus cwj pwm los ntawm:

• zog;
• qhov loj thiab zoo ntawm cov nplej;
• frost resistance;
• cov ntsiab lus ntawm kev puas tsuaj impurities.

Lub cev ntawm lub pob zeb crushed

Cov yam ntxwv ntawm lub cev ntawm cov khoom tau txais kev saib xyuas ntau dua li lub hauv paus chiv keeb. Nws yog nyob rau hauv lub hauv paus ntawm cov khoom ntawm crushed pob zeb uas lub Scope ntawm nws siv yog txiav txim. Txhua hom pob zeb crushed yog tus cwj pwm los ntawm cov cim tseem ceeb hauv qab no:

• zog;
• flakiness;
• frost resistance;
• nqus dej;
• taum zoo;
• radioactivity.

Nyob rau hauv cov pob zeb crushed, cov ntsiab lus ntawm lamellar thiab koob nplej yog normalized, nws thickness los yog dav yog peb zaug ntau dua qhov ntev. Qhov no yog ib qho tseem ceeb yam ntxwv, uas yog thawj zaug ntawm tag nrho cov them nyiaj mloog mus rau thaum siv crushed pob zeb nyob rau hauv kev tsim kho thiab zus tau tej cov khoom siv ntxiv dag zog. Yog hais tias muaj coob tus lamellar thiab koob-zoo li cov nplej nyob rau hauv tag nrho cov loj ntawm crushed pob zeb, cov pob zeb sib tov yuav tig tawm mus ua tsis zoo thiab yuav tsum tau ntxiv compaction. Ntau cov nplej ntawm cov duab no ua rau muaj ntau cov voids. Raws li feem pua ntawm lamellar thiab koob nplej hauv qhov loj, cov pob zeb crushed tau muab faib ua pawg:

• I - txog li 15%, cuboid;
• II - 15-25%, txhim kho;
• III thiab IV pawg ntawm ib txwm flakeiness - 25-35% thiab 35-50%raws.

Cuboid crushed pob zeb yog qhov tsim nyog tshaj plaws rau kev npaj ua vaj tse vim tsis muaj teeb meem nrog voids.

Lub zog rubble

Cov cuab yeej ntawm pob zeb crushed no yog tus yam ntxwv ntawm lub zog txwv ntawm cov pob zeb qub. Lub zog ntawm cov khoom siv pob zeb no yog txiav txim siab los ntawm kev ua raws li cov khoom siv los ntawm compression, crushability thaum crushing hauv lub tog raj kheej, abrasion nyob rau hauv khib nruas. Granite muaj lub zog siab tshaj plaws. Qhov xav tau tshaj plaws yog crushed granite M1200 nrog cov ntsiab lus ntawm cov pob zeb ntawm cov pob zeb tsis muaj zog ntau tshaj 5%. Nws daim ntawv thov tseem ceeb yog kev tsim kho ntawm lub hauv paus, kev tsim cov pob zeb ua kom muaj zog thiab cov kabmob thauj khoom.

Frost tsis kam ntawm cov khoom

Cov cuab yeej ntawm cov khoom siv kom muaj kev ncaj ncees, lub zog thiab loj tom qab rov ua kom khov thiab thawing yog hu ua Frost resistance. Cov yam ntxwv no tseem ceeb tshwj xeeb tshaj yog rau cov pob zeb crushed siv hauv kev tsim kho cov hauv paus hauv cheeb tsam uas tsis tshua muaj kub. Cov ntaub ntawv nrog cov ceev ceev thiab cov nplaim tawg qis muaj qhov siab frostionance.

Kev ua haujlwm ntawm rubble radionuclides

Ib yam tseem ceeb tshaj plaws ntawm txhua yam khoom siv hauv kev tsim kho yog lub xov tooj cua ntawm rubble. Nws txiav txim siab nws qhov tsim nyog rau txhua hom kev tsim kho thiab yuav tsum ua raws li kev cai huv thiab kab mob sib kis, uas tau lees paub los ntawm cov lus pom zoo thiab cov ntawv pov thawj. Thawj chav kawm ntawm radioactivity ntawm lub zog siab crushed pob zeb sib raug rau tus nqi tsawg dua 370 Bq / kg. Rau chav kawm thib ob - ntau dua 370Bq/kg.