Lead And Zinc Ores Concentrates in India
The total resources of lead and zinc ores as on 1.4.2005, as per UNFC system, are estimated at 522.58 million tonnes. Of these, 125.75 million tonnes (24%) fall under 'reserves' while balance 396.83 million tonnes (76%) are classified as 'remaining resources'. The resources of ore containing 10% Pb & Zn were estimated at 86.82 million tonnes, ore containing 5 to 10% Pb & Zn were 144.68 million tonnes and ore containing less than 5% Pb & Zn were 291.08 million tonnes.
The total metal content in resources is 7.21 million tonnes lead and 24.26 million tonnes zinc. Besides, 118.45 thousand tonnes lead zinc metal resources are available. In terms of reserves, 2.59 million tonnes of lead metal and 11.09 million tonnes of zinc metal are estimated. Rajasthan is endowed with the largest resources of lead-zinc ore amounting to 468.51 million tonnes (90%), followed by Bihar 11.43 million tonnes (2%), Maharashtra 9.272 million tonnes (2%), Madhya Pradesh 6.920 million tonnes (1%) and Andhra Pradesh 6.620 million tonnes (1%). Resources are also established in Gujarat, Meghalaya, Odisha, Sikkim, Tamil Nadu, Uttarakhand and West Bengal.
Exploration and development.GSI carried out exploration for lead and zinc during 2009-10 in the districts of Bhilwara, Jhunjhunu and Sirohi in Rajasthan, besides Baramulla and Reasi districts of Jammu & Kashmir and Gadchiroli district of Maharashtra. MECL conducted exploration for lead and zinc in the Ajmer and Chittorgarh districts, Rajasthan.
DMG, Rajasthan carried out exploration in Ajmer, Bhilwara, Pali and Rajasmand districts for basemetals. DGM, Nagaland carried out exploration for basemetals in Phek district, DGM Madhya Pradesh carried out exploration in Jabalpur and Katni districts. The details of exploratory activities are given in Table-2.
HZL also conducted exploratory operations in Zawar Mala Group of mines in Udaipur district and also in Rampura-Agucha mines, Bhilwara district in Rajasthan. In its Rampura Agucha mine, it has proved the continuity of the ore body up to a depth of 1065 metres by drilling 6 boreholes with a total meterage of 5096.15 metres.
Lead & Zinc Ores and Concentrates
The production of lead and zinc ore at 7.10 million tonnes in 2009-10 increased by about 6% as compared to that in the previous year. The metal content of lead and zinc in the ore produced in 2009-10 worked out to 129,752 tonnes and 745,969 tonnes, respectively as against 128,732 tonnes and 919,139 tonnes, respectively, in the previous year,ball mill is used widely in Lead & Zinc Ores and Concentrates(used ball mills for sale in india).
During the year under review, 7.09 million tonnes of lead & zinc ore was treated as against 6.64 million tonnes in 2008-09. The production of lead concentrates in 2009-10 at 136,095 tonnes increased by about 2% as compared to the previous year. Among the states, Rajasthan continued to be the only producer of lead concentrates accounting for the entire production(Zinc ore crusher).
The production of zinc concentrates increased from 1,224,077 tonnes in 2008-09 by 4% to 1,277,080 tonnes in 2009-10. The entire production of zinc concentrates was reported from Rajasthan. The entire output of lead and zinc ores and concentrates in both the years was reported by mines owned by Hindustan Zinc Ltd, a private sector unit(zinc ore crushing machine india).
Grade Analysis
All-India average metal content of ore treated in 2009-10 worked out to 12.36% (1.82% Pb and 10.54% Zn) as against 12.65% (1.91% Pb and 10.74% Zn) in 2008-09. The metal content of ore treated from Rampura-Agucha mine in Bhilwara district of Rajasthan was the highest at 14.71% (1.80% Pb and 12.91% Zn). The lead concentrates produced in Rajasthan in 2009-10 was of grade 61.82% Pb as against 61.34% Pb in 2008-09. Metal content of zinc concentrates produced in Rajasthan worked out to 52.85% Zn in 2009-10 as against 52.90% Zn in the previous year,manufacturer of raymond mill for grinding,(manufacturer of raymond mill for grinding).