SHUVAIEV S. Development, pilot-industrial development and implementation of the technology production of manganese sinter production and smelting of manganese ferroalloys using the concentrate of high-intensity wet magnetic separation of sludge.

Dissertation for the degree of a candidate of technical sciences in specialty 05.16.02 – Metallurgy of ferrous and nonferrous metals and special alloys. National metallurgical academy of Ukraine, special scientific council D.08.084.03. Dnipro, 2018. The dissertation is focused on solving the urgent task of the MMC of Ukraine – development, research, industrial development and implementation of the through-flow technological scheme and processes for the production of concentrate using the technology of high-intensity magnetic separation (HIMS) of stored slimes of spent slag depositions, manganese agglomeration and smelting of competitive manganese ferroalloys with different phosphorus content. Principal and quantitative-qualitative scheme of enrichment of oxide manganese ore and assortment of concentrates are analyzed. At the concentrating factory of PJSC OGOK, the useful removal of manganese from ore into concentrates is 73,74%. Output of sludge ore enrichment of 59,64%. There are 129,5 million tons of sludge with an average content of 12,3% Mn found in the sludge storage. The technology of slurry separation with production of concentrates is developed and deployed technology of HIMS is implemented for manganese agglomerate production of AM-2 grade. A computer simulation of the thermodynamic equilibrium of the same type phases was performed at the sintering of an agglomeration charge with the replacement of ore concentrates in the mixture of the concentrate of the HIMS (TU U 07.2-00190928-007:2012) from the sludge slurry storage device. The materials of large-scale experimental and industrial development and the introduction of agglomerate production (39,81–40,06% Mn) using the VMPM concentrate without and using the RTG reagent in the conditions of BOAF in modernized sinter machine K 4-50 sintering area 65 m2, as well as in the conditions of the agglomeration division of JSC NZF on the agglomeration machine AKM-5-105. The regulated specific productivity of agglomerates has been achieved with the agglomeration of the agglomerate charge developed. Technology of smelting of slag of manganese processed ShMP-78 with the use of agglomerate AM-2 and AMNV-2 produced by BOAF PAO OGOK and agglomeration division of JSC NZF was developed and scientifically justified, and was introduced for smelting of manganese ferroalloys in ferroalloy furnaces of JSC ZFZ.