This article deals with the analysis and use of Mn ore fines in the production of ferroalloys. The paper focuses on the evaluation of Mn ores in terms of their chemical and phase composition. Mn ore fines are formed in the process of mining, transport and processing of Mn ores in factories. These small particles cannot be directly put into the furnace; they should be edit before they are used. The most appropriate treatment method of Mn ore fines is sintering. Laboratory experiments were done with Mn ore from Turkey, Bosnia and Herzegovina and Bulgaria. Analyses of the Mn ores were performed in order to determine their various properties, according to which conditions were adapted for laboratory experiments to produce the best quality Mn sinter. Chemical and phase composition and thermal analysis have been performed on the ores. The phase analysis showed that the ore from Turkey and Bulgaria are in the carbonate form and the ore from Bosnia and Herzegovina is in the oxide form. DTG analysis showed that, by the thermally heating the biggest weight loss happened in the Mn ore from Bulgaria. For the best quality ore can be considered the Mn ore from Turkey because it contains the highest % of Mn, lowest content of SiO 2 and the ore has the lowest % of P. The sizing of Mn ore fines was carried out in laboratory conditions on a laboratory sintering pan. Produced Mn sinters were subjected to analysis of their chemical and phase composition. Produced Mn sinters have higher content of Mn tot compared to Mn ores. As a result of Mn ore sintering the form of majority compounds changed-silicates, carbonates and hydrates of manganese in the starting Mn ores were in the produced Mn sinters analysed majority compounds based on the higher oxides of Mn and Fe, which is in the process for production of Mn ferroalloys positive.

This article deals with the analysis of the physical and chemical properties of undersize samples of Mn ore from the mine Buzim in Bosnia and Herzegovina, comparing individual samples, followed by the production of Mn sinter and analysis of the Mn sinter. Mn ore fines are formed in different steps of Mn ores processing. These fines can not be directly put into the ferroalloy furnace. The most suitable way of Mn ore fines processing is sintering and the article deals with this method of processing. On each sample of Mn ore from Bosnia and Herzegovina marked Mn ore 1, Mn ore 2 and Mn ore 3 have been performed the analysis of physical and chemical properties. The results showed that the granulometry of the samples affects their chemical composition. On the sample of Mn ore 1 was performed an experimental laboratory sintering, in which succeeded to produce an Mn sinter. The Mn sinter is suitable for further use in the production of FeSiMn, in terms of low phosphorus content and suitable phase composition, but the Mn sinter had also a high content of SiO 2 , which adversely affect the granulometry and strenght of the sinter.

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Currently is the biggest problem of metallurgical companies the increase of fossil fuel prices and strict environmental regulations. As a result of this, companies must look for alternatives that would reduce the amount of fossil fuels and reduce emissions.Wood sawdust has huge energy potential, which can be used in the process of agglomerate production. This type of energy is locally available, has some similar properties as fossil fuels and is economically advantageous. For these reasons, experimental study using laboratory agglomeration pan was realized to study the possibility of agglomerate production with a mixed fuel. Experimental results show the viability of mixed fuel use in the agglomeration process, but also show significant possibility for improvement. The maximum acceptable substitution ratio, which corresponds to qualitatively suitable agglomerate is 20% of pine sawdust. Based on the realized experiments and the obtained results we have acceded to the intensification of the agglomeration process with an objective to increase the amount of added substitution fuel while maintaining the required quality of agglomerate.