After the damp raw material is put into the drier from on end, it is turned over through strring-up rake inside the cylinder and distributed uniform in the drier and contacted with countercurrent hot air fully. It speeds up heat and mass conducting of dry. During the period of dry, raw material is effcted by stirring-up rake with gradient and hot air, it can be moved and passed through the dry region and to star valve and then discharge the finished product.| item(m) | productive capacity (t/h) | Revolution (r/min) | motor power (Kw) | install angle | Humidity of final |
| Φ1.0×5.0 | 0.5-1.2 | 0.6-6 | 4 | 3-5 | ≤1.5% |
| Φ1.2×6-10 | 1.5-3 | 0.6-6 | 5.5 | 3-5 | ≤1.5% |
| Φ1.5×12-18 | 3-5.5 | 0.6-6 | 15 | 3-5 | ≤1.5% |
| Φ1.8×12-18 | 5-6.5 | 0.6-6 | 18.5 | 3-5 | ≤1.5% |
| Φ2.2×12-22 | 7-12 | 0.6-6 | 22 | 3-5 | ≤1.5% |
| Φ2.4×15-20 | 9-15 | 0.6-6 | 30 | 3-5 | ≤1.5% |
| Φ3.0×25 | 16 | 0.6-6 | 55 | 3-5 | ≤1.5% |
| model | heat direct and sequence | heat direct and retrograde | compound heating | |||
| type of material | mineral | HP | ammonium ulphate | phosphorus fertilizer | coal | |
| capacity kg/h | 1000 | -66 | 15000 | 20000 | 12000 | 5000 |
| primary moisture % | 30 | 13 | 6 | 1.5 | 5 | 6.5 |
| final moisture % | 15 | 0.3 | 1 | 0.1 | 0.1 | 0.1 |
| average dim. mm | 6.5 | 0.05 | 4.7 | 0.5-0.7 | 0.5 | 5 |
| thickness of material mm | 770 | 800 | 1890 | 1100 | 1500 | 750 |
| capacity of hot air kg/h | 39000 | 5400 | 10750 | 9800 | 6500 | 16000 |
| temp. of air in | 600 | 165 | 500 | 180 | 650 | 570 |
| temp. of material out | 42 | 100 | 70 | 80 | 75 | |
| heating style | gas | steam electricity | heavy oil | coal fuel furnace | heavy oil | Heavy oil |
| ratio of feed | 6.3 | 7 | 7.5 | 7.8 | 18 | |
| rotation speed rpm | 4 | 4 | 3.5 | 3 | 4 | 2 |