AP19576391 Development of an innovative technology for obtaining new alloys from accumulated substandard multicomponent chromium and manganese-containing waste using Big Data

Relevance

The relevance of the work lies in the need for efficient use of accumulated waste from the processing of chromite and manganese ores, which allows not only to reduce the environmental burden, but also to create high-quality metallized pellets for the metallurgical industry. The development of technology for solid-phase firing of waste to produce commercial products (ferroalloys) contributes to the processing of secondary resources and improving product quality. With the growing demand for resource-efficient technologies, this work is of significant importance for the economy and the environment, contributing to the development of ferrous metallurgy and waste recycling.

Purpose

Investigation of the process of low-temperature firing of a charge based on manganese and chromium-containing waste to produce metallized pellets. To achieve this goal, the following tasks were solved: Calculations of the firing charge based on manganese and chromium-containing waste were carried out. Experiments on granulation of the charge were carried out. A laboratory installation has been developed for conducting experiments on charge firing. Laboratory experiments have been conducted on firing a charge based on manganese-containing waste to produce metallized pellets based on iron and manganese. The mechanical and physico-chemical properties of metallized pellets have been studied. Laboratory experiments have been conducted on firing a charge based on chromium-containing waste to produce metallized pellets based on iron and chromium. The mechanical and physico-chemical properties of metallized pellets have been studied.

Expected and achieved results

Results: new data on the composition of the charge of a given composition were obtained; the installation design was selected, the methodology was adjusted and preliminary experiments on firing the charge were carried out; technological parameters of firing manganese-containing charge and chromium-containing charge were determined; new data on the mechanical and physico-chemical properties of metallized pellets based on Mn, Fe and Cr, Fe were obtained. Novelty: Metallized manganese and chromium pellets have been experimentally obtained. It was found that during the firing process, complete reduction of iron from its oxides (RFe = 0.98) and partial reduction of manganese and chromium oxides are achieved. Optimal firing process parameters have been established for Mn waste: process temperature – 950-1100 ° C; t – 90 min., and for Cr waste: process temperature – 1100-1200 ° C; t – 90 min., which ensure the production of metallized Mn and Cr pellets of a given composition. New data on the mechanical and physico-chemical properties of the obtained metallized pellets have been obtained. The compressive strength of the raw pellets was 0.57 kg/pellet; For dry metallized pellets obtained after drying at a temperature of 400 ° C, the compressive strength was 19.2 kg/pellet. The obtained properties ensure their reliability during transportation and provide favorable conditions for subsequent recovery melting.

Research team members with their identifiers (Scopus Author ID, Researcher ID, ORCID, if available) and links to relevant profiles

Тажиев Елеусиз Болатович

List of publications with links to them

Dosmukhamedov N. K. et al. On the problem of processing of manganese wastes from ore beneficiation: preparation of a single-component charge for ferromanganese melting. – 2024.