Passage (milling)
In grain milling , the product routing of a mill is referred to as a passage, strand or passage .
That with rolling chairs milled grain is a plan sifter screened. The flour is sieved off and the meal is ground again until all of the flour has been removed. This product guidance (grinding and subsequent sifting) is called passage. The grain and its products go through 10–16 passages (depending on the milling diagram ).
Name of the passages
The names of the passages are not standardized internationally. There are different types of passages depending on the region:
- Bruising passes , here are the grist of (passages B1 to B5 German: I. to V. shot, Swiss / French) fluted rollers crushed continuously
- Dissolution passages (German: 1st to 4th dissolution, Swiss / Spanish: passages C1, C2, C4), which are intended to dissolve the flour or semolina flakes on fine corrugated and smooth rollers
- Grinding passages (German: 1st to 6th, 7th or 8th grinding, Swiss / Spanish: Passages C3 and C5 to C11), here semolina and vapors are ground into flours of the correct type .
Semolina and fumes always contain adhered Kleieteile , they must be treated separately, so at the first passage from the second and Ab (German) or C1B and C2B (Swiss / Spanish).
Table overview:
| Passage type | Germany | Switzerland | France | Spain | England | United States |
|---|---|---|---|---|---|---|
| Shot passages | I. ... V. | B1 ... B5 | T1… T5 | 1. BK… 5. BK | ||
| Plansifter passages | 1st Sun ... 2nd Sun | DIV 1… DIV 2 | BMR1 ... BMR 2 | GR-1… GR-2 | ||
| Bran spinner | KS1 ... KS4 | Br.1… Br.4 | Cep.1… Cep.4 | Br.F.1 ... Br.F.4 | BKDU1, BKDU2, BRDU3, SHDU4 | |
| Semolina cleaning machine | P1, P2, ... | S1, S2, ... | P1, P2, ... | |||
| resolution | 1. Aa | C1A | Cl.1 f. | C1A | A. | 1MC + 1MF |
| 1. Ab | C1B | Cl.1 gr. | C1B | X1 | 1. SIZ | |
| 2. Aa | C2A | Cl.2 f. | C2A | B. | 2M | |
| 2. Ab | C2B | Cl.2 gr. | C2B | X2 | 2. SIZ | |
| Uebg. (3. A) | C4 | Cl.3. | C4 | B2 | 3rd M | |
| Grinding | 1st M ... 9th M | C3, C5… C12 | C1… C8 | C3, C5… C12 | C ... L | 3M, 4M, 5M, 1T, 6M, 7M, 1LG, 2LG |
Individual evidence
- ↑ Interactive diagram of a flour mill. (No longer available online.) Association of German Mills, Bonn, archived from the original on August 30, 2011 ; Retrieved November 26, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Bühler AG / Swiss Milling School documents
