Physical-Chemical and Pyrometallurgical Estimation of Processing of Complex Ores with Extraction of Iron, Vanadium, Titanium

Abstract

The metallurgical characteristics of pellets (reducibility, strength after reaction, softening start and end temperatures), phase composition (X-ray phase analysis), and porosity were studied. Blast furnace smelting parameters were calculated using laboratory pellets with different basicities and degrees of metallization. Pellets were obtained from complex titanium-magnetite ores. The vanadium extraction of this ore into metal did not exceed 10 % during smelting of metallized pellets in an arc steelmaking furnace, but special techniques could raise this to 85 %. According to calculations from the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences (IMET UB RAS), vanadium extraction up to 80–90 % can be achieved by using high-base and partially metallized pellets. The influence of changes in the composition and metallurgical characteristics of titanomagnetite pellets with increasing basicity (especially relative to strength after reduction) should be taken into account.

Study of the Strength Characteristics of Agglomerate Depending on its Structure and Phase Composition

“…The Institute of metallurgy of the Ural Branch of the Russian Academy of sciences has developed a methodology for evaluating the influence of quality indicators of iron ore raw materials on the technical and economic indicators of blast furnace smelting [6][7][8][9][10]. The following metallurgical characteristics of laboratory agglomerates -mechanical strength, abrasion resistance, thermomechanical strength (LTD+6.3) -were determined according to the Russian State Standard 15137-87 and ISO 13930 within the developed methodology.…”

Direct Vanadium Alloying of Liquid Steel with Self‐Reduction Vanadium Slag Briquette

“…[4,5] At present, the vanadium is extracted from the co-production of hot metal in the BF-BOF process or is directly produced from the vanadium ore concentrate. [6][7][8] Traditionally, vanadium is added into liquid steel during the steelmaking process mainly in form of ferrovanadium. However, the production of ferrovanadium usually needs undergo a series of steps including roastingleaching, [9][10][11][12] purifying and pyrometallurgical process, [13][14][15] which causes high energy consumption and serious environmental pollution.…”