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Rampura Agucha

overview

Rampura Agucha is the second largest zinc mine in the world with a production of 3.9 million MT in FY 2018. It stands apart as a world class ore body with zinc-lead reserve grade averaging 15.7%. Total Reserve are 46 million MT and mineral resources are 50.5 million MT as on March 31, 2018.

The ongoing underground mine project is being developed with a vision of producing 5.0 million MT per annum ore production. The ongoing underground mine project includes a main production shaft of 955m depth, 7.5m diameter and hauling capacity of 3.75 million MT per annum; two ventilation shafts, two declines from surface and paste fill plants.

Key Facts

  • Location : Rampura Agucha, Rajasthan, India
  • Mining Type : Underground
  • Mining Method : Long hole open stoping with paste filling
  • Products : Zinc Concentrate and Lead Concentrate
  • Certification : ISO 9001:2008, ISO 14001:2004, OHSAS 18001:2007, SA 8000:2008 & 5S

Background Information

Rampura Agucha was commissioned in 1991 as an opencast mine. It is located 230 km north of Udaipur, in the State of Rajasthan in India. Rampura Agucha is stratiform, sediment-hosted, high grade zinc & lead deposit. The ore body is massive and lens shaped with consistent ore grade.

Process Description

Mining:

The mine is highly mechanized with state of the art technology. Underground Mining is carried out using Long Hole Open Stoping with Paste Fill method with mined out stopes backfilled with cemented rock & with cemented tailing in paste form.

Processing:

Processing facilities use rod mill – ball mill combination in stream I; Semi-Autogenous Grinding (SAG) mill – ball mill combination in stream II, III & IV; and flotation methods to produce zinc and lead concentrates. The concentrator is equipped with the state-of-art-automation, which includes the Experion process control system; Multi stream analyzer to ensure faster & accurate readings of different metal percentages in the various streams and Froth image analyzer that provides actual image of froth bubbles to facilitate effective quality control.
Zinc and lead concentrates produced at Rampura Agucha are transferred to our smelters. The tailing generated due to beneficiation of ore are stored in specially constructed tailing dam, which is considered as the most compatible on-site storage facility for long term disposal of tailings. The base of the tailing dam is fully sealed by the application of a layer of impervious soil at bottom. After settling, the tailings water gets recycled to plant thus maintain zero discharge.