Beneficiation of Dilband Iron Ore (M.Sc.Thesis)

By: Material type: TextTextLanguage: English Publication details: Karachi : Institute of Materials Sciences and Research Pakistan Steel, 1998Description: vp. : illSubject(s): DDC classification:
  • 669.141 KAM
Summary: Abstract: Dilband Iron Ore is a newly found largest iron ore deposit of Pakistan located at Dilband in Kalat Division, Balochistan. There is approximately 300 million ton deposit in 1 to 3 meter thick partially exposed layer on surface. Dilband iron Ore is reddish in color, sedimentary in nature and late Jurassic early Cretaceous in age, made by the regression of sea as a result of rifting the Indo Pakistan plate from the main Gondwana land. Dilband Iron Ore was tested to be used as a sinter blend at Pakistan Steel Mills as a part of indigenous resource development activity by Sinter Research laboratory of IMS&R. I was found that maximum 15% of Dilband Iron Ore in blend can give a suitable sinter with all the requirements within limits for the blast furnace process, but it does not replace any imported ore. Considering this technical constraint, possibility of beneficiation of Dilband Iron Ore is carried out. In beneficiation study of Dilband Iron Ore it was found that it is an Oolitic type Sedimentary Ironstone. Oolites are embedded in Calcium Iron Silicate matrix. Oolites are basically Hametite but interlaminated with transformed ferrogenous mineral called Chemosite. Oolites range from very fine to 1.5 mm in size. Larger oolites are mostly composed of two or more small oolites. Liberation of this ore is possible by detachment rather than by size reduction. Oolites are not able to get free completely due to size variations so no prominent segregation of particular constituent in different size fractions was observed. High Intensity Magnetic Separation was applied at intensity level of 2 Tesla (20,000 Gauss) both using Dry and Wet techniques on different size fractions at - 1.6 mm sized ore. Although 60% weight of feed go to concentrate in dry process for - 0.246 mm ( - 60 mesh) to + 0.147 mm ( + 100 mesh) size fractions and 83% weight of feed goes to concentrate in wet process for - 0.147 mm ( - 100 mesh) size fraction but degree of success calculated was found to be only 8 6%.
Holdings
Item type Current library Shelving location Call number Status Date due Barcode
Reference Collection Reference Collection Government Document Section Govt Publication Section 669.141 KAM Available 61501

Abstract:

Dilband Iron Ore is a newly found largest iron ore deposit of Pakistan located at Dilband in Kalat Division, Balochistan. There is approximately 300 million ton deposit in 1 to 3 meter thick partially exposed layer on surface. Dilband iron Ore is reddish in color, sedimentary in nature and late Jurassic early Cretaceous in age, made by the regression of sea as a result of rifting the Indo Pakistan plate from the main Gondwana land.

Dilband Iron Ore was tested to be used as a sinter blend at Pakistan Steel Mills as a part of indigenous resource development activity by Sinter Research laboratory of IMS&R. I was found that maximum 15% of Dilband Iron Ore in blend can give a suitable sinter with all the requirements within limits for the blast furnace process, but it does not replace any imported ore. Considering this technical constraint, possibility of beneficiation of Dilband Iron Ore is carried out.

In beneficiation study of Dilband Iron Ore it was found that it is an Oolitic type Sedimentary Ironstone. Oolites are embedded in Calcium Iron Silicate matrix. Oolites are basically Hametite but interlaminated with transformed ferrogenous mineral called Chemosite. Oolites range from very fine to 1.5 mm in size. Larger oolites are mostly composed of two or more small oolites. Liberation of this ore is possible by detachment rather than by size reduction. Oolites are not able to get free completely due to size variations so no prominent segregation of particular constituent in different size fractions was observed. High Intensity Magnetic Separation was applied at intensity level of 2 Tesla (20,000 Gauss) both using Dry and Wet techniques on different size fractions at - 1.6 mm sized ore.
Although 60% weight of feed go to concentrate in dry process for - 0.246 mm ( - 60 mesh) to + 0.147 mm ( + 100 mesh) size fractions and 83% weight of feed goes to concentrate in wet process for - 0.147 mm ( - 100 mesh) size fraction but degree of success calculated was found to be only 8 6%.