Preparation of iron-ore materials for iron and steel industry
- 1 — Ph.D., Dr.Sci. professor Saint Petersburg State Mining University
- 2 — Ph.D., Dr.Sci. professor Saint Petersburg State Mining University
- 3 — Ph.D. associate professor Saint Petersburg State Mining University
- 4 — post-graduate student Saint Petersburg State Mining University
- 5 — chairman of the supervisory board LLC «Metall-group»
Abstract
Briquetting in ferrous metallurgy is the earliest way clotting. In the beginning of XX century briquetting has been forced out by agglomeration basically for the reason considerably more productivity of process of agglomeration. As alternative to agglomeration pelletizing became. It started to be popular in the XX-th century, that is quite explainable by essential increase of manu- facture fine particle concentrates. However briquetting has a number of advantages. For some kinds of iron ores briquetting can be preferable process. Such ores are rich iron ores with iron content 60 % and more. The technology of briquetting includes crushing, preliminary screening for removing of large particle size classes; dispensing and mixing martite ore, and hydrohematite ores; mixing with binder substances; pressing; screening for removing of small size briquettes; drying. The received briquettes have density 3200-3600 kg/m3, durability on uniaxial compression more then 4,5 MPа.
References
- Lotosh V.E., Okunev A.I. Annealing-free clotting of ores and concentrates. Мoscow, 1980.
- An application for a patent. N 2010114373 Ru. МПК C22B1/14. Method of preparation iron material as briquettes / V.S.Litvinenko, V.L.Trushko, R.E.Dashko. Priority 12.04.2010. Pabl. 20.10.2011.