Melting Ferrochrome Using Chrome-Ore Briquettes

Zhunusov, A. K.; Tolymbekova, L. B.; Bykov, P. O.; Zayakin, O. V.

doi:10.1007/s11015-023-01549-6

Cited by 4 publications

(6 citation statements)

References 4 publications

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“…One of the rational ways to dip the small stuff of charge materials is the sintering process. The sintering process is a traditional and indispensable method of preparing metallurgical raw materials and helps to reduce energy consumption during smelting; the gas permeability of the charge materials is improved [7][8][9][10][11][12][13].…”

Section: Methodsmentioning

confidence: 99%

Technological Analysis of the Production of Nickel-Containing Composite Materials

Kelamanov,

Yessengaliyev,

Sariev

et al. 2024

J. Compos. Sci.

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The article presents the results of obtaining a composite material by sintering nickel-containing raw materials mixed with carbon-containing materials, namely using coke and semi-coke. The sintering process was performed at a charge layer height of 240 mm and the temperature of the lower layer was T = 1200 °C. The results of the sieve analysis showed (a fraction of 10 mm) that the yield of a suitable composite material using coke was 68.3% and with semi-coke 67.0%. The average nickel and chromium content in the composite materials was 1.42% and 3.07%, accordingly. As a result of determining the strength characteristics of the obtained composite materials with various reducing agents by dropping from a height of 2 m onto a steel pallet, it was found that the obtained composite materials have high mechanical properties in terms of strength of 81% and 89.2%. The results of the elemental composition at the studied points and the thermal analysis of the studied composite material are presented. The mineralogical composition of the composite material is presented in the form of serpentine and nontronite, and the empty rock is made of quartz and talc. The activation energy of thermal analysis by the method of non-isothermal kinetics were calculated. The results of experiments on the production of composite materials from nickel-containing raw materials will be recommended for obtaining the optimal composition of composite materials at the stage of pilot tests and industrial development of the developed technology for processing nickel ores of the Republic of Kazakhstan. For the processing of nickel-poor nickel ores, it is of great importance to obtain optimal technological and technical and economic indicators that ensure low cost of nickel in the resulting product.

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Section: Methodsmentioning

confidence: 99%

Technological Analysis of the Production of Nickel-Containing Composite Materials

Kelamanov,

Yessengaliyev,

Sariev

et al. 2024

J. Compos. Sci.

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“…Screenings of coke were used as fuel. The fraction 0.1-1.6 mm has the most unfavorable effect on pelletization [20]. It is in this fineness range that many man-made wastes and the material under study (iron sands) fall, the granulometric composition of ferrous sands is presented in Table 2.…”

Section: Experimental Partmentioning

confidence: 99%

“…The work [ [19]. [20]] shows the possibility of hydrochemical enrichment of ferrous sands by leaching with alkali-aluminate solutions of alumina production.…”

Section: Introductionmentioning

confidence: 99%

“…The agglomeration of ore materials makes it possible to involve various technogenic wastes in metallurgical processing [20], such as screenings of ores, sludge, mill scale, flue, and aspiration specks of dust [21], and pyrite cinders. The agglomerated high-quality charge prepared for smelting will make it possible to utilize existing waste, improve the operation of furnaces, reduce dust removal, reduce the specific consumption of coke, and increase metal smelting.…”

Section: Introductionmentioning

confidence: 99%

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Research of the production of iron ore sinter from bauxite processing waste

Zhunussova,

Bykov,

Zhunusov

et al. 2023

KIMS/CUMR/MShKP

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This article presents the results of a study of the agglomeration of waste alumina ferrous sands and the use of sinter as a substitute for metal charge in steelmaking. At this time, in the process of processing bauxite, JSC "Aluminium of Kazakhstan" produces a large number of fines, which is of great interest to ferrous metallurgy. Wastes from alumina production include a variety of waste sludge, including red, gray sludge, and ferrous sands. According to the chemical composition, ferrous sands can be attributed to iron ore material with a high content of alumina. Most of these problems are eliminated by preliminary agglomeration of fines. In this work, agglomeration studies made it possible to establish the optimal parameters for sintering ferrous sands. When using 10% fuel, the best sintering performance is achieved. The optimal parameters for sintering ferrous sands mixed with other metallurgical wastes are such as productivity - 0.92 t / m2 h, mechanical strength - 80.0%, sintering speed - 19.3 mm/min, yield - 82.0%, the maximum temperature in the layer is 1340 °С. The results of laboratory melt carried out in an induction melting furnace indicate the possibility of using a sinter as a substitute for metal charge in iron and steel smelting. The conducted melting confirms the fundamental possibility of using a sinter, made from waste products of alumina production of ferrous sands, is a man-made charge material that is suitable for use as a 5% additive to the metal charge in the smelting of iron-carbon alloys similar in composition to cast irons.

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“…It was established that the use of dolomite in the agglomeration of fine manganese raw materials ensures the formation of more refractory slags in the production of ferrosilicomanganese [23,24].…”

Section: Introductionmentioning

confidence: 99%

Experimental Manufacturing of Ferromanganese Alloy from Man-Made Manganese-Containing Wastes

Tastanova,

Temirova,

Sukurov

et al. 2023

Processes

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The results of experiments on manganese pellets based on beneficiated manganese-containing sludge and the melting of ferromanganese alloy with their use are presented. Via beneficiating manganese-containing sludge (16.32% Mn), a concentrate with a manganese content of 35.2% was obtained. The composition of the charge used to prepare manganese pellets is proposed, and the conditions affecting their strength are determined. It was established that manganese is present in the composition of calcined pellets in the form of jacobsite MnFe2O4 and hausmannite Mn3O4. The formation of a phase of ferrobustamite (Ca0.79Fe0.21)SiO3, a ferrosilico-calcium binder that helps increase the strength of pellets, was found. Ferromanganese alloy was obtained as a result of the melting of calcined manganese pellets in a high-temperature Tamman-type unit. The Fe-Mn-Si alloy corresponds to the DIN 17 564 as-grade FeMn70Si in terms of manganese (63.76%) and silicon (17.21%) contents. The content of limiting impurity elements—carbon and phosphorus—in ferromanganese alloy is within acceptable limits. The structure of Fe-Mn-Si alloy and slag formed during their smelting process were studied.

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Melting Ferrochrome Using Chrome-Ore Briquettes

Cited by 4 publications

References 4 publications

Technological Analysis of the Production of Nickel-Containing Composite Materials

Technological Analysis of the Production of Nickel-Containing Composite Materials

Research of the production of iron ore sinter from bauxite processing waste

Experimental Manufacturing of Ferromanganese Alloy from Man-Made Manganese-Containing Wastes

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