Purpose:To study the method of excavation in open-cast mines and to see how rock phosphate is excavated.
Location: 20 km from Udaipur
Mineral Excavated: Rock Phosphate and apatite
Machinery Used: Crane, Shovel, Drill Machine, Jack Hammer, Dumper, Dozer,
Process:Firstly, the excavated mineral is graded on the basis of the stromatoliteΘ content.Below 30 % is graded as low grade and above 30% is graded as high grade ore.After excavation, this ore is transported to the crushing plant where it is put in the hopper from where it goes to the jaw crusher where it is crushed and then to the impactor where fine crushing takes place. Then this ore is screened and uncrushed material is sent back in the process.
Rock Phosphate the final product of this mine is the primary product for the fertilizer industries. Out of the 100% requirement of our country, 20 % is produced in India.80% of India’s production of Rock Phosphate comes from this Mine. It is one the largest mines in Asia. Its stroke line is about 16 km. and the mineral shows a dip of 55۫ towards north. This mine is divided into 8 blocks started in 1968 having a reserve of 50 million tons presently owns a reserve of 18 million tons. There are three plants for crushing, two for high grade and one for low grade ore. The highest percentage of phosphate amongst the ore is 40%.The output sent for fertilizer industries is 31.5%.Stromatolites of this mine are present in three forms with respect to their formation. These are fossils of blue-green algae which helped in deposition of phosphate.
