◆ Ukunquma Ubukhulu Be-Bulk Nobukhulu Be-Tapped

Ukunqunywa kobuningana obukhulu kanye nobuningana obuthintekayo kuyindlela yokukala ubuningana obukhulu bezidakamizwa ezimpuphu esikhundleni esixegayo, nezinqubo zokupakisha ezihambelanayo ezichazwe ngokufanele. Ukupakisha okuxegayo kuchazwa njengesimo esitholwa ngokuthulula isampuli yempuphu esitsheni ngaphandle kokuqinisa. Ukupakisha okuthintekayo kuchazwa njengesimo esifinyelelwa lapho isitsha esigcwele impuphu siwela phansi ngokuphindaphindiwe ukusuka ebude obuchaziweyo ngesivinini sokuwela esingaguquki kuze kube yilapho ivolumu ebonakalayo yesampuli esitsheni ihlala cishe ingashintshi.

Ubukhulu obukhulu bomgubo buyisilinganiso sobunzima besampula yomgubo ongagudluziweyo kuye ngevolumu yayo, okuhlanganisa nomthelela wevolumu yendawo phakathi kwamagranule. Ngakho-ke, ubukhulu obukhulu buya kuncike kubukhulu bamagranule omgubo nokuhlelwa kwendawo kwamagranule ngaphakathi kombhedeni womgubo. Izilinganiso eziningi zivezwa ngamagremu nge-milliliter (g/mL), noma ngabe i-SI unit yi-kilograms nge-cubic meter (1 g/mL = 1000 kg/m³), njengoba izilinganiso zenziwa kusetshenziswa izinduku ezinezilinganiso. Kungase futhi kuvezwe ngamagremu nge-cubic centimeter (g/cm³).

Ukuhamba kanye nezici zokupakisha uphawu oluyimpuphu kuncike ekulungisweni kwesampula, ukuphatha, nokugcinwa - okungukuthi, isimo sokwelashwa kwesampula. Izinhlayiya zingapakisha kumavolumu ahlukahlukene; ngaphezu kwalokho, ubukhulu bebhedi yempuphu bungashintsha ngenxa yokuphazamiseka okuncane kakhulu. Ngenxa yalokho, ubukhulu obuningi bempuphu kuvame ukuba nzima ukukala ngokunembayo nangokuvuselelwa, futhi indlela esetshenzisiwe kufanele ichazwe lapho kubikwa imiphumela.

Ubukhulu obuningi bempuphu bunqunywa ngokuthi:

Izindlela 1 kanye no-3 ziyathandeka.

Impushana eyanele yokuhlolwa idluliswa nge-sieve enomngxuma ongu-1.0 mm noma mkhulu, kuphulwa noma yiziphi izinhlanganisela ezingase zenziwe ngesikhathi sokugcina uma kudingeka; kufanele kuqashelwe ukuze kugwenywe ukushintsha uhlobo lwendaba.

Kala ngokunembayo cishe u-100 g wesampula lokuhlola (m) kuya ku-0.1 g eduze kakhulu, bese uyifaka ngobumnene esilindeni esomile esingu-250 mL esinezikali (esifundeka kuya ku-2 mL) ngaphandle kokucindezela. Linganisa ngokucophelela impuphu ngaphandle kokuyicindezela, bese ufunda ivolumu ebonakalayo engacindezelwanga (V₀) kuya kuyunithi elinezikali eliseduze kakhulu uma kudingeka.

Bala i-bulk density ngamagremu nge milliliters usebenzisa ifomula:

Ngokuvamile, ukwenza izinqumo eziphindaphindayo kuyelulekwa ukuze kutholwe leli phrofayela.

Uma ukhwezi lwempushana luncane kakhulu noma lukhulu kakhulu kangangokuthi ivolumu engahlalisiwe yenqamu yesampula yokuhlola engu-100 g ingaphezu kuka-250 mL noma ingaphansi kuka-150 mL, isampula engu-100 g ayikwazi ukusetshenziswa. Ngakho-ke, kufanele kukhethwe enye inqwaba yempushana ukuze ivolumu yayo engahlalisiwe ibe phakathi kuka-150 mL no-250 mL (ivolumu engahlalisiwe ≥ 60% yevolumu yesilinda ephelele); inqwaba yesampula yokuhlola ichazwe endleleni yokubika imiphumela.

Ezinsampuleni zokuhlola ezinemvovumelo phakathi kuka-50 mL no-100 mL, kungasetshenziswa isilinda esilinganiselwe esingu-100 mL esifundeka ku-1 mL; ivolumu yesilinda ichazwe endleleni yokubika imiphumela.

Lo mshini (1) (isithombe 3.01-1) wakhiwe nge-funnel engenhla enesihlungo esingu-1.0 mm. I-funnel ifakwe ebhokisini elinamasondo amane engilazi lapho umgubo uslayida futhi ugxume khona lapho udlula. I-funnel esisekelweni sebhokisi elinamasondo iqoqa umgubo futhi iliyise enkomishini efakwe ngqo ngezansi. Inkomishi ingaba yilezi:

Vumela impuphu eyengeziwe ukuthi igeleze ngomshini, usebenzisa okungenani u-25 cm³ wepuphu yekomishi eliyindilinga kanye no-35 cm³ wekomishi eliyisikwele. Qaphela ususe impuphu eyengeziwe ngokuhambisa isipontshi kahle phezu komphetho wekomishi, ubambe isipontshi ngokuqondile ukuze uvimbele ukugcwala noma ukukhipha impuphu ekomishini. Susa noma yikuphi okunamathiselwe ezinhlangothini zekomishi, futhi uthole isisindo (m) sepupu esiseduze ku-0.1%.

Bala ubukhulu obuningi ngamagremu nge milliliters usebenzisa ifomula:

lapho i-V₀ iyivolumu yekhomishi.

Rekhoda isilinganiso sokunqunywa kathathu usebenzisa amasampula amathathu ahlukene empupu.

Lezinsiza zihlanganisa isitsha sensimbi engagqwali esiyindilinga esingu-100 mL, esinezilinganiso njengoba zikhonjiswe kuMfanekiso 3.01-2.

Impushana eyanele yokuhlolwa idluliswa nge-1.0 mm sieve, kuphulwa noma yiziphi izinhlanganisela ezenziwe ngesikhathi sokugcina uma kudingeka, futhi ivunyelwe ukuthi igeleze ngokukhululeka esitsheni sokulinganisa kuze kube sigcwalela. Susa ngokucophelela impushana eyengeziwe phezulu esitsheni njengoba kuchaziwe kuMkhuba 2.

Bala isisindo (m₀) sempuphu ngokukhipha isisindo esitholwe ngaphambili sesitsha sokulinganisa esingenalutho.

Bala i-bulk density (g/mL) usebenzisa ifomula:

Bhala isilinganiso sezinqumo ezintathu usebenzisa amasampula amathathu ahlukene empuphu.