Ibhalwa yebhola iyimishini enkulu emkhakheni wemaminerali nomkhankaso, esetshenziswa ukugaya izinto zibe uthuli oluncane. Isivinini sokujika, noma i-RPM (ukujika ngomzuzu), iyinto ebalulekile ethinta ukusebenza kahle nokusebenza kwenqubo yokugaya. Le ndatshana ihlola indlela yokunquma i-RPM efanele ye-bhola enobubanzi obungu-45-intshi.
Ngaphambi kokubala i-RPM efanele, kubalulekile ukuqonda imishini ye-ball mill:
– Imbobo: Umzimba oyi-cylindrical wesigayo.
– Amabhola: Imidiya yokugaya eyaphula futhi yagaya impahla.
– Umshini: Uqinisa ukuhamba kwemholi.
– Impahla iphonswa emshinini.
– Amabholi abamba futhi agcoba impahla.
- Ukujika kwesivinini kuthinta ukusebenza kahle kokugaya.
Kunezinto eziningi okufanele zicatshangelwe uma kuhanjiswa i-RPM ye-ball mill:
Speed enkulu ye-ball mill ingacalulwa kusetshenziswa ifomula elandelayo:
\[ \text{Isivinini Esibalulekile (C)} = \frac{76.6}{\sqrt{D}} \]
Where: Lapho:
Ngokwenziwa kwe-mill enobubanzi obungu-45-intshi:
\[ C = \frac{76,6}{\sqrt{3,75}} \approx 39,5 \, \text{RPM} \]
Ngokuvamile, imishini yokugaya ibhola isebenza ku-65% kuya ku-75% wesikhawu esiyinhloko ukuqinisekisa ukugaya kahle nokugwema ukugqoka ngokweqile. Ngakho, ukuze kube nesigaxa esingu-45-intshi:
– Okuncane: \( 0.65 \times 39.5 \approx 25.7 \, \text{RPM} \)
– Okuhlosiwe: \( 0.75 \times 39.5 \approx 29.6 \, \text{RPM} \)
Uma usetha i-RPM ye-ball mill, cabanga ngezinto ezilandelayo ezisebenzayo:
Ukunquma i-RPM efanele ye-ball mill kuhilela ukuqonda ijubane elibalulekile nokulungisa ngezinto ezingokoqobo. Endaweni yokusebenza ye-mill enobubanzi obuyi-45-inch, kuyanconywa ukusebenza phakathi kwe-25.7 RPM kanye ne-29.6 RPM ukuze kuhlangabezane nokusebenza kahle nokuqina. Hlale ucabangela impahla ethile kanye nemiphumela oyifunayo uma usetha i-RPM ukuze uqinisekise ukusebenza okuhle.
