Behaviour of oversize particles in iron ore balling

Basdag, A
Arol, Ali İhsan
The fineness of material for iron ore pelletizing is generally 80% to 90% -325# (45 mum). The presence of oversize particles (+500 mum) in the feed does not exceed a few tenths of a percent and their behaviour in pelletizing has not attracted much attention. This is partly because the behaviour of oversize particles can not be easily observed in lab tests. In a recent industrial plant-scale test, it was determined that oversize particles tend to accumulate in the green balling circuit. Such an occurrence does adversely affect the balling process. The results of the industrial plant-scale investigation on the mentioned subject are presented in this paper.


Electrochemical Formation of Brazing Alloys on Metal Substrates
Ulu, F.; Karakaya, İshak; Demirci, G.; ERDOĞAN, MUSTAFA (2013-11-01)
CusilTM is a eutectic brazing alloy of 72% silver, 28% copper composition; used to join different materials. The large difference between the standard reduction potentials of silver (0.799V) and copper (0.337V) makes their electrochemical codeposition difficult. A complex ion bath containing KAg(CN)2, CuCN and KCN was used to bring the reduction potentials closer together. The effect of electrolyte concentration on composition and microstructure of electrodeposited Ag-Cu films was investigated at 25oC. A cu...
Usage of boron compounds in copper production
Rüşen, Aydın; Geveci, Ahmet; Topkaya, Yavuz Ali; Department of Metallurgical and Materials Engineering (2013)
Copper losses to slag are generally between 0.7-2.3% during the copper matte smelting stage. In this study, the aim was to reduce these losses in the slag phase. For this purpose, usage of some additives (especially calcined colemanite labeled as CC, boric oxide-B2O3 and calcium oxide-CaO as well) as flux material was investigated. The flash furnace matte-slag (FFM-FFS) obtained from Eti Copper Inc. and a master matte-slag (MM-MS) produced synthetically were used as starting materials. Additives were tested...
Küçültülmüş Tambur Testi ile Demir Cevheri Peletleri Aşınma Dayanımı Belirlenmesi
Sivrikaya, Osman; Arol, Ali İhsan (null; 2019-04-19)
The tumbling-abrasion indices of iron ore pellets are measured according to instructions in ASTM E279- 97 (2010). This test measures the resistance of the product pellets under certain abrasive condition in a standard test drum. However, this test requires 11.3 kg pellet to carry out a single tumbling-abrasion test. This amount of pellet can be obtained from industrial-scale pellet production. However, it is impossible to produce this amount of pellet in laboratory-scale investigation since the capacities o...
SİVRİKAYA, OSMAN; Arol, Ali İhsan (2012-01-01)
In this study the separation possibility of gangue minerals from a low grade magnetite ore with 45% Fe from an iron ore deposit located near Erzincan-Turkey was investigated. The iron ore deposit consists of mainly magnetite mineral. Hematite is the second iron oxide found in the deposit. The gangue minerals contain mainly SiO2 and Al2O3 impurities. The main object of the research is to investigate the production of a concentrate suitable for iron ore pellet production. The concentrate for pellet production...
Contrasting effects of biochar and hydrothermally treated coal gangue on leachability, bioavailability, speciation and accumulation of heavy metals by rapeseed in copper mine tailings
Munir, Mehr Ahmed Mujtaba; Liu, Guijian; Yousaf, Balal; Mian, Md Manik; Ali, Muhammad Ubaid; Ahmed, Rafay; Cheema, Ayesha Imtiyaz; Naushad, Mu (Elsevier BV, 2020-03-15)
The purpose of this research was to examine the influence of hydrothermally treated coal gangue (HTCG) with and without biochar (BC) on the leaching, bioavailability, and redistribution of chemical fractions of heavy metals (HMs) in copper mine tailing (Cu-MT). An increase in pH, water holding capacity (WHC) and soil organic carbon (SOC) were observed due to the addition of BC in combination with raw coal gangue (RCG) and HTCG. A high Cu and other HMs concentration in pore water (PW) and amended Cu-MT were ...
Citation Formats
A. Basdag and A. İ. Arol, “Behaviour of oversize particles in iron ore balling,” CIM BULLETIN, pp. 69–71, 2004, Accessed: 00, 2020. [Online]. Available: