Analysis of the Thermodynamic Calculations for the Smelting of Nickel-Chromium Cast Iron Is Made Using the Program Complex “Astra-4”

Kelamanov, B.S.; Жумагалиев, Ерлан Уланович; Samuratov, E.K.; Akuov, A.; Yerekeyeva, G.S.

doi:10.51885/15614212_2020_2_135

Cited by 2 publications

(2 citation statements)

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“…It should be noted that the reliability of the kinetic analysis carried out in this work, first of all, requires increased measurement accuracy and correct statistical processing of the results obtained. The literature describes various methods by which, after processing these curves (TG or DTA), the activation energy of processes can be determined [16][17][18][19][20][21][22][23][24][25][26].…”

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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“…Removal of phosphorus from cast iron in buckets also remains a problematic operation that requires a lot of money. As a result, almost all the efforts of scientists are aimed at finding a technology that enables removing phosphorus from Lisakov concentrate at the stage of ore preparation for blast furnace conversion [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Studies of the Possibility of Improving the Quality of Iron Ores and Processing of Technogenic Composite Iron-Containing Waste of Metallurgical Production

Yessengaliev,

Mukhametkhan,

Mukhametkhan

et al. 2023

J. Compos. Sci.

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Ferrous metallurgy has been and remains one of the main types of production activities that enables humanity to extract, process and produce basic equipment for all types of activities. The growth of ore production as well as the reduction in world reserves of the raw material base have lead to the search for effective methods of processing and preparation of waste for metallurgical processing. The mining and metallurgical sector of the Republic of Kazakhstan, which has its an integrated mining and metallurgical complex with its own coal, iron ore, and energy base, uses iron ores from several deposits. It also includes ash and sludge storage tanks, which store valuable metallurgical waste, such as converter production sludge, rolling scale, and others, the use of which is hindered by the presence of certain harmful impurities in the composition (a rather high content of non-ferrous metals, especially zinc, a high content of oils, etc.). These valuable technological wastes require additional research that may contribute to their use as a charge or as iron-containing components of the charge. Based on the urgency of the tasks of dephosphorylation of iron ores and utilization of human-made waste (converter sludge and rolling scale), studies were conducted to try to eliminate existing problems. The results of the research work make it possible to obtain metals based on prepared pellets with a significantly low phosphorus content; this will enable the use of an oiled rolling scale and converter sludge for the production of a metalized product for steel smelting. The resulting metalized products make it possible to dispose of scale and converter sludge by 70%, and the degree of iron extraction exceeds existing methods by 1–3.5% (92.1–94% vs. 95.6%).

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Analysis of the Thermodynamic Calculations for the Smelting of Nickel-Chromium Cast Iron Is Made Using the Program Complex “Astra-4”

Cited by 2 publications

References 0 publications

Technological Analysis of the Production of Nickel-Containing Composite Materials

Technological Analysis of the Production of Nickel-Containing Composite Materials

Studies of the Possibility of Improving the Quality of Iron Ores and Processing of Technogenic Composite Iron-Containing Waste of Metallurgical Production

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