Maize milling machines process maize into: Flour (fine or coarse for human consumption), grits and maize bran (used in animal feed).
Machines vary by capacity, milling process, and level of automation. They can be small scale (200 to 500 kg/hr), medium (1 to 5 tons/hr), or industrial scale (10+ tons/hr).
Hammer Mills: Coarse flour or feed and 0.5 to 10 tons/hour.
Roller Mills: High quality, fine flour or grits and 2 to 30 tons/hour.
Posho Mills (Disc Mills): Low cost, small capacity units, mixed flour with bran and 200 to 800 kg/hour.
| Capacity (Tons/hour) | Power Requirement (kW) | Type of Power |
|---|---|---|
| 0.5 to 1.0 TPH | 15 to 25 kW | Single phase or 3 phase |
| 2 to 5 TPH | 50 to 100 kW | 3 phase |
| 10 to 30 TPH | 150 to 350+ kW | Industrial 3 phase |
| Type | Capacity | Use Case |
|---|---|---|
| Hammer Mill | 200 to 1,000 kg/hr | Animal feed, low cost milling |
| Roller Mill | 1 to 5 tons/hr | High quality human consumption |
| Posho Mill (Maize Huller + Mill) | 500 to 1,000 kg/hr | Rural areas; household and SME level |
| Integrated Milling Plant | 5 to 50 tons/day+ | Large commercial millers |
Typical flow in large scale setups: Receiving → Cleaning → Conditioning → Dehulling → Milling → Sifting → Packaging.
Coffee processing involves transforming freshly harvested cherries into green coffee beans ready for roasting.
| Machine / Stage | Technical Specifications |
|---|---|
| Coffee Pulper | Disc or drum type; 500 kg/h to 6 tons/h; stainless steel preferred |
| Mucilage Remover / Fermentation Tank | Tanks: 1,000 to 10,000 L; or mechanical scrubbers with approximately 1 ton/h capacity |
| Coffee Washer | Requires clean water; spiral type or rotary; 1 to 6 tons/h |
| Coffee Grader | Vibrating or rotary sieve with 3 to 5 screens |
| Mechanical Dryer | Continuous or batch type; 500 kg to 5 tons/batch; diesel or biomass heated |
| Hulling Machine | Rubber roller or abrasive type; 1 to 4 tons/h |
| Polisher (Optional) | Spiral or friction type; optional in specialty markets |
| Gravity Separator | Table or vibrating type; 1 to 6 tons/h |
| Destoner | Blower + vibration; capacity matched to mill |
| Color Sorter | RGB/IR camera; 1 to 6 channels; 1 to 3 tons/h |
| Weighing & Packing | Semi or fully automatic; electronic load cell based |
| Processing Scale | Cherry Input (tons/day) | Machine Sizes Needed |
|---|---|---|
| Small (Community) | 1 to 3 tons/day | 500 to 1,000 kg/h |
| Medium | 5 to 10 tons/day | 1 to 3 tons/h |
| Estate Scale | 20 to 50+ tons/day | 5 to 6 tons/h |
| Machine | Typical Power Rating |
|---|---|
| Pulper | 3 to 7.5 kW |
| Washer | 1 to 2 kW |
| Dryer (Electric) | 10 to 30 kW per ton/batch |
| Huller | 5 to 15 kW |
| Gravity Separator | 3 to 7 kW |
| Color Sorter | 5 to 10 kW |
| Packing Machine | 2 to 5 kW |
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