This mine is located 24 km from the axis of three castles to Birjand and the area of this mine is about 9 square kilometers.
The largest bentonite mine in Iran and the Middle East with a reserve of 3.6 million tons and a possible reserve of more than 15 million tons
With the capacity of extraction, production and blending of 200 thousand tons of bentonite
The potential of producing sodium, calcium and potassic bentonite with applications in steel industries, drilling oil and gas wells, foundry, animal feed and animal supplements, earth lines, etc.
The possibility of producing a variety of knowledge-based and high-tech products with high added value due to the existence of a wide range of bentonite with different qualities in this mine.
Technical Specifications
- Absorbent lump
- Sodium bentonite
- Physical characteristics
| Moisture percentage | Size | Water Absorption (next 2 hours) | swelling | Color |
| 15-20 % | 1-300 mm | 550-650 | 20-22 | Light gray |
- Absorbent powder
- Physical characteristics
| particle size | Blain | Moisture | WaterAbsorption | |
| 45 mµ | 75 mµ | |||
| >85% | >95% | 4000-5000 cm2/gr | 8-10 % | 550-650 |
- (XRD) Chemical analysis (XRD) of bentonite lump and powder
| Element | SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | P2O5 | MnO | S | L.O.I |
| Det. Limit | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/02 | 0/01 |
| Unit | % | % | % | % | % | % | % | % | % | % | % | % |
| value | 65-70 | 13-15 | 2 | 0.25 | 1.2 | 1.25 | 3.1 | 1.5 | 0.09 | 0.05 | <0.02 | 8 |
-
Drilling lump
- (Specification viscosity (standard API
| parameter value | Standard | Requirement |
| 35-40 | minimum 30 | Viscometer dial reading at 600 R/min |
| 24-27 | Viscometer dial reading at 300 R/min | |
| 1-1.5 | maximum 3 lbf/(100 ft2•cP) | Yield point-plastic viscosity ratio |
| <15 | maximum 15.0 mL | Filtrate volume |
- Drilling powder
- Physical characteristics
| particle size | Blain | Moisture | Residue on 200 mesh | |
| 45 mµ | 75 mµ | |||
| >85% | >95% | 5000 cm2/gr | 8-10 % | 2.5% |
- (XRD) Chemical analysis (XRD) of bentonite lump and powder
| Element | SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | P2O5 | MnO | S | L.O.I |
| Det. Limit | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/01 | 0/02 | 0/01 |
| Unit | % | % | % | % | % | % | % | % | % | % | % | % |
| value | 70 | 14 | 1.5 | 0.05 | 1.1 | 1.5 | 2.9 | 0.8 | 0.06 | 0.02 | <0.02 | 8 |
