Ko te mira poroporo tetahi taputapu matua mo te huri ano. Kei te whakamahia nuitia mo te ciment, te hua silicate, nga momo hanga whare hou, nga mea ahi-ahuru, te tongi matū, te pango me te whakarewa kore-ferrous, te karaihe, te karaera me etahi atu.
Ko te mira poroporo he pai mo te painga me te huri i te pungarehu rere, te kowhatu, te kirikiri kirikiri, te paura konumohe, te paura waro, te parai rino, te ore, te konupora feldspar, te rino rino, te rino rino, te konumohe, te silicon carbide, te alumina, te waro gangue me etahi atu mea.
Ko te wahi matua o te mira poro maku ko te porotakaroa he iti te diameter me te roa nui e huri haere ana ma te taputapu tuku. Ka whangaihia nga rauemi mai i te kokoru porotakaro me te whenua na te pa o te poro maitai me te ore me te huri-whaiaro. Na te mea e whangai tonu ana, ka pana te pehanga i nga rawa ki te putanga ka tukuna nga mea whenua mai i te putanga rango. Ko te matiti kua whakauruhia ki roto i te putanga o te mira ka whakawhirinakihia mo te whakahekenga kaha. Ko te iti o te mata o te penupenu i roto i te rango ka whakaiti i te miro o te ore, ka kore e puta te poro maitai. I raro i nga tikanga whakaputa, he nui ake te kaha o te mira matiti i te mira puhake. Ko nga pito e rua o te tinana rango ka tango i te pire hurihuri hei utu mo te peeke reeti, he pai ake te penapena hiko.
| Momo | Te tere hurihuri | Te taumaha o nga poro | Rahi whangai | Rahi putanga | Te kaha | Te mana motopaika | Taumaha |
| Ф900×1200 | 36 | 1.0 | ≤20 | 0.074-0.4 | 0.5-1.5 | 18.5 | 4 |
| Ф900×1800 | 36 | 1.5 | ≤20 | 0.074-0.4 | 1.1-3.5 | 22 | 4.8 |
| Ф900×3000 | 36 | 2.6 | ≤20 | 0.074-0.4 | 1.5-4.8 | 30 | 6 |
| Ф1200×2400 | 31 | 3.5 | ≤25 | 0.074-0.4 | 1.6-5 | 30 | 9.5 |
| Ф1200×4500 | 31 | 6.5 | ≤25 | 0.074-0.4 | 1.6-5.8 | 4.5 | 13.1 |
| Ф1500×3000 | 27 | 6.8 | ≤25 | 0.074-0.4 | 2-6.3 | 75 | 16 |
| Ф1500×4500 | 27 | 10 | ≤25 | 0.074-0.4 | 3-9 | 110 | 19 |
| Ф1500×5700 | 27 | 13 | ≤25 | 0.074-0.4 | 3.6-11 | 130 | 24 |
| Ф1830×3000 | 25 | 10 | ≤25 | 0.074-0.4 | 4-11 | 130 | 25 |
| Ф1830×3600 | 25 | 12 | ≤25 | 0.074-0.4 | 4.3-12 | 155 | 32 |
| Ф1830×4500 | 25 | 15 | ≤25 | 0.074-0.4 | 4.5-16 | 155 | 33.7 |
| Ф1830×6400 | 25 | 21 | ≤25 | 0.074-0.4 | 6-17 | 210 | 38 |
| Ф1830×7000 | 25 | 23 | ≤25 | 0.074-0.4 | 6.5-18 | 210 | 43 |
| Ф2100×3000 | 23 | 13 | ≤25 | 0.074-0.4 | 5-15 | 180 | 32 |
| Ф2100×3600 | 23 | 16 | ≤25 | 0.074-0.4 | 6-17 | 210 | 35.8 |
| Ф2100×4500 | 23 | 20 | ≤25 | 0.074-0.4 | 7-21 | 245 | 42.6 |
| Ф2100×7000 | 23 | 31 | ≤25 | 0.074-0.4 | 8-25 | 280 | 55 |