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Nandini Mines, where limestone mining started.
- Lime stone supply to BSP will start from August
After nearly 16 years in Asia’s largest Nandini’s Limestone Mines, mining has started at full capacity once again. After which the dependence of BSP on Limestone from abroad and other states of the country will now be reduced. At the same time, with the commencement of mining in the new part, Nandini has been able to supply the best quality limestone for the next 50 years.
Prior to 2005, the requirement of limestone in BSP was being met from Nandini Mines. At that time, about 6 lakh tonnes of limestone was supplied annually from the mines. After 2005, citing deteriorating quality of limestone of Nandini mines, the production was reduced to 1.5 to 2.5 lakh tonnes.
Simultaneously, to meet the demand of BSP, limestone was purchased from Jaisalmer in Rajasthan and Kuteshwar in Madhya Pradesh in the country including Dubai. But due to the transportation cost, the limestone procured from outside was costing the management.
For example, at the cost at which limestone is available from Nandini, Rs 600 per tonne has to be paid on ordering it from Kuteshwar and about one and a half thousand rupees per tonne has to be paid extra. Keeping this in mind, the BSP management planned to start mining in Nandini mines in those areas whose area was not used till now even after the lease was approved.
Mining started in Kala Pathar area
Thus, to increase the production of limestone at Nandini Mines, it was decided to start mining at Bench No. 4 which is known as Kala Patthar Area. Till now mining was being done from bench number 2 and 3. To start mining in the Kala Patthar area, the process of extracting the accumulated water from there was started. This work itself took about 5 months.
Supply in BSP is closed since 2005
Since the start of mining in Kala Patthar area, 12 thousand tonnes of limestone has been mined so far. After cleaning it in the crushing and washing plant, supply will be started for BSP from August. Where its use in blast furnace will start. During this, three heavy motor pumps have been installed to ensure that the mining area does not get waterlogged again.
Lease area 526.24 hectares, first mined in the year 1959
World’s second largest mines at Nandini The mining lease area at Nandini is 526.24 hectares. Limestone mining started here from the year 1959 with the establishment of the plant. Mines management alone has the capacity to meet the limestone requirement of BSP for 50 years. Mining started here again recently.
Also know the role of limestone in the production of steel
Limestone is used in blast furnaces. Its job is to remove the impurities of iron ore. Limestone is sent to the furnace by chemical reaction. Where it helps to remove the impurities of iron ore. The amount of silica in limestone ranges from 3.5 to 4 percent.
3.60 lakh ton target
Limestone mining has been started again at Nandini Mines along with Kala Patthar area. BSP has been given a target of 3.60 lakh tonnes of limestone supply. In which the supply of 1.50 lakh tonnes of limestone of less than 4.5 percent silica is also included. -VB Singh, CGM, Nandini Mines, BSP