Improving air-tuyere operation in blast furnaces by means of coatings and sealant

Кириллова, Н. Л.; Radyuk, А. G.; Titlyanov, A. E.; Gorbatyuk, S. M.

doi:10.3103/s0967091213050082

Cited by 21 publications

(5 citation statements)

References 1 publication

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“…We take tg =16000 o С; td =11500 o С; tv = 300 o С; hn Taking into account that the heat guard inside of air passage finds wide application [12,13], it was a study on the thickness effects of insulation lining on heat losses through surface of air passage and it was obtained temperature distribution from water-cooled hole of tuyere to air passage ( fig.2-3).…”

Section: Research Technique and Resultsmentioning

confidence: 99%

Simulation of heat losses and temperature of blast furnaces tuyeres

2017

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Abstract. The calculation technique of heat losses and temperature, adapted to blast furnaces tuyeres is described. Using a linear excel program the effect of gas-thermal coating and insulation lining on thermal state of the blast tuyere was studied. Problems of the blast tuyeres hardening and reducing heat losses through their surface are relevant, but finding ways of the blast tuyeres hardening and reducing heat losses through their surface by simulation of the thermal state of blast furnaces tuyeres are carried out.

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Section: Research Technique and Resultsmentioning

confidence: 99%

Simulation of heat losses and temperature of blast furnaces tuyeres

2017

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“…1 -housing; 2 -crushing cone; 3 -outer armor; 4 -funnel; 5 -leading unbalance; 6 -driven unbalance; 7 -amplitude limiter. Cone crushers are widely used in the processing of various rocks at all stages of crushing [10,11]. Depending on the purpose, there are cone crushers for large (CLC), medium (CMC) and fine (CFC) crushing.…”

Section: Stagementioning

confidence: 99%

Reengineering of the ore preparation production process in the context of “Almalyk MMC” JSC

2018

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The review of ore crushing and grinding processes at the mining-and-processing enterprise is presented. An alternative to the standard technology of crushing ore in cone crushers is proposed after a comparative analysis of ore grinding processes.The modern branch of industry is characterized by high costs for the implementation of technological processes based on the disintegration of materials. Mining companies have a complex technological process, one of the stages of which is the process of reducing ore pieces. The extracted mineral in most cases is a mixture of closely intergrown mineral pieces of various sizes. The size of the ore depends on the type of mining and, in particular, on the method of blasting. With open mining, the largest pieces are 1 -1.5 m in diameter, while with underground work they are slightly smaller [1].To assess the efficiency for the use of technological processes and ore crushing and grinding equipment, when obtaining the final product at JSC "Almalyk MMC", we will perform a comparative analysis of ore preparation.The process of material pieces or grains reduction by destruction under the influence of external mechanical forces, depending on the size of the final product, is called crushing or grinding (crushing is effected by crushing, splitting, impact forces or a combination thereof, and grinding as a result of impact and abrasive forces). Previously believed that the material destruction during crushing is due to compressive forces, and when grinding from shear. At present, there are no fundamental differences between crushing and grinding, and the difference is only in the size of the starting material and the final product. The types of crushing are distinguished by the size of the obtained product pieces, and the types of crushing are determined by the content of coarse or fine grain classes in the product. It is conditionally considered that during crushing, a product with a maximum grain size of more than 5 mm is obtained, and when grinding it is less than 5 mm.Crushing and grinding are preparatory operations of enrichment and are intended for ore grains separation (opening) of various minerals, contained in the mineral in the form of closely intertwined intergrowths. The more fully the minerals are revealed during crushing and grinding, the more successful the subsequent mineral enrichment is.Evaluation of the crushing and grinding results is performed according to the degree of crushing, grinding and efficiency of crushers and mills.The degree of crushing or grinding is determined by the formula:

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“…-making ingots of the necessary weight and high quality; -development of processes using various combinations of thermomechanical and geometric forging parameters in order to obtain a high-quality structure and the required physical, mechanical and operational properties of large forgings; -limit use of power and geometric equipment parameters at all stages of forging production using both traditional and new progressive forging processes [17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Forging Process Flow Development for Plate Production

Кобелев

Valeeva

Gerasimova

2021

SSP

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Developed on the basis of the pilot and industrial work results, a process flow for the production of mono-block plates with 7600x7600x360 mm dimensions from a 290-ton ingot for subsequent 15H2NMFA steel bottom stamping, was carried out. A practical implementation of the developed procedure for the bottom production from mono-block large-sized plates was made. The basic technology for the mono-block plate production was applied in the conditions of Izhorskiye Zavody, OJSC and Atommash, OJSC, this technology provides for a minimum amount of reconstruction of the existing facilities of these enterprises.

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Improving air-tuyere operation in blast furnaces by means of coatings and sealant

Cited by 21 publications

References 1 publication

Simulation of heat losses and temperature of blast furnaces tuyeres

Simulation of heat losses and temperature of blast furnaces tuyeres

Reengineering of the ore preparation production process in the context of “Almalyk MMC” JSC

Forging Process Flow Development for Plate Production

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