As per the UNFC system, the total resources of felspar in the country as on 1.4.2005 are estimated at about 91 million tonnes of which 38 million tonnes (42%) are reserves and 53 million tonnes (58%) are the remaining resources. In terms of grades, pottery/ ceramic grade account for 50%, other/unclassified and not-known grades 42% and glass grade only 8% of the total resources. By States, Rajasthan alone accounts for about 62% of the total resources followed by Tamil Nadu (10%), Bihar and West Bengal 5% each.
The Directorate of Mines & Geology, Government of Rajasthan carried out exploration for felspar in 2009-10 near village Jhaira, Nayagaon, Kakor, Kabra, etc, in tehsil and district Tonk over an area of 200 sq.km. Mapping in the scales 1:50000, 1:10,000 and 1:2000 was progressively carried out.
The production of felspar at 456 thousand tonnes in 2009-10 decreased by 14 % as compared to the preceding year, due to labour shortage. There were 67 reporting mines in 2009-10 as against 66 mines in the previous year. Besides, the production of felspar was also reported from 44 mines as an associated mineral primarily with quartz and mica,rock pulverizer for sale(). Seven mines, each producing more than ten thousand tonnes annually, accounted for approximately 61% of the total production in 2009-10. Seven principal producers reported 66 percent of the total production during the year under review.Rock pulverizer for sale http://pulverizerindia.co.in/application/index.html
Rajasthan was the leading producing State contributing 49% of the total production followed by Andhra Pradesh 47%, Jharkhand 2% and the remaining 2% was contributed by West Bengal, Karnataka and Tamil Nadu (Tables - 2 to 5). The mine-head stocks of felspar at the end of the year 2009-10 were 229 thousand tonnes as against 213 thousand tonnes in the beginning of the year (Table - 6). The average daily employment of labour in 2009-10 was 710 as against 673 in the previous year. Prices of felspar are furnished in the General Review on 'Prices'.
Felspar is won chiefly from pegmatites. Mining is carried out, generally, by opencast method. Significant output of felspar is obtained as an associated mineral during mining of quartz, mica and to some extent beryl. Bhilwara and Ajmer districts in Rajasthan and Mahaboobnagar and Nellore districts in Andhra Pradesh are the important mining areas in the country,quarry plant solutions in india(quarry plant solutions in india).
The pegmatite bodies are exposed by the removal of top soil and overburden. It is then broken either manually or by drilling and blasting. Mechanised production of felspar has been widely adopted in Indian mineral industry since long, moving the industry forward from hand cobbled method, employed by small producers. The broken material is sorted out and sized. Crushed felspar is separated mechanically by suitable screens to meet market requirements. The general demand is for 30/80 mesh, 100 mesh, 150 mesh, 180 mesh, 200 mesh and 250 mesh material. Washing is sometimes done to upgrade the product by removing clay, etc. The processed felspar is bagged and despatched to different consignees,Felspar grinding machine for sale (Felspar grinding machine for sale) http://pulverizerindia.co.in/application/felspar-grinding-machine-for-sale.html.
The processing of felspar involves usually flotation or magnetic separation to remove accessory minerals like mica, garnet, ilmenite ,quartz and sandstone(sandstone crushing machine price in india). Silica in the form of quartz in pegmatites and silica sand in felspathic sand deposits are obtained as co-products of mining. In some applications, presence of silica is advantageous. Other users require extremely pure and finely- ground grades. Glass grade felspar is usually the most coarse material. The filler application demands finely-ground material. A modern processing plant is located at Kodthal in Mahaboobnagar district of Andhra Pradesh and 12 processing plants in Rajasthan cater to ceramics and glass industries.
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