History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.87
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.87
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v1.c13.s2.t4.87
| Sl.No | Location of the furance | Furnace cross section | d:D ratio | H/D/2 ratio | Stack angle | Furnace Volume (V1) | V2= cm³/kg | Remark |
| | | | | | | V1 = KD²H (m³) | | |
| | | | | | | P | | |
| 1. | Madhya Pradesh | Circular | 0.28 | 6.37 | 81.1 | 0.13 | 7916 | Direct Reduction |
| 2. | Rajdoha | Circular | 0.28 | 5.77 | 80.1 | 0.14 | 7758 | - |
| 3. | Salem | Circular | 0.51 | 3.97 | 75.9 | 0.22 | - | - |
| 4. | Mandla | Circular | 0.21 | 2 | 64 | 0.23 | - | - |
| 5. | Chiglabecha (Koraput) | Circular | 0.5 | 6.3 | 81 | 0.04 | - | - |
| 6. | Jiragora | Circular | 0.3 | 4.6 | 77.8 | 0.02 | 6654 | - |
| 7. | Kamarjoda (Bihar) | Circular | 0.25 | 4.5 | 77.5 | 0.03 | 30150 | - |
| 8. | Bastar | Circular | 0.83 | 6.6 | 81.4 | 0.23 | 5285 | Value of K should be Different |
| 9. | Madhya Pradesh | Rectangular | - | - | - | 0.57 | - | - |
| 10. | Nagpur | Square | 0.4 | 9.76 | 84.1 | 0.16 | 31987 | - |
| 11. | Nalanda Valley | Rectangular | 0.28 | 9.76 | 84.1 | 0.24 | 48535 | - |
| 12. | Modern Indian Blast Furnace | Circular | 0.7 to 0.77 | - | 81.9 | 760 | 358 | Indirect reduction |