Theoretical basis, modern technologies, and innovations of ferrous metallurgy

Nosov, S. K.; Рощин, А. В.; Рощин, В. Е.; Chernyakhovskii, B. P.

doi:10.1134/s0036029512120099

Cited by 5 publications

(2 citation statements)

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“…Currently, the metallurgical industry is one of the most developing industries in the world [1][2][3][4][5]. Metallurgical silicon is one of the most popular elements, as it is widely used in the production of silumins, organosilicon compounds, polycrystalline silicon, abrasives, for deoxidation of steel and in other industries [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Study of the Properties of Dust from the Production of Prebaked Anodes for its Use as a Reducing Agent in Silicon Smelting

Nemchinova

Tyutrin

Dolgikh

2023

MSF

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The production of metallurgical silicon is carried out in ore-thermal furnaces by reducing silica-containing raw materials with a carbon reducing agent, the most reactive of which is expensive and scarce charcoal. For the purpose of possible partial replacement of charcoal in the charge for silicon smelting, we conducted studies on the properties of carbon-containing technogenic raw materials formed in the process of obtaining pre-fired anodes for aluminium production. The object of research was 2 samples of dust from the mixing and pressing compartment: from the aspiration units and from the cleaning of the shop. The characteristics of these samples (carbon content, granulometric composition, humidity) were determined. To activate these carbon materials, ultrahigh-frequency processing was used at various capacities and durations. When studying the reactivity of the dust samples by the method of heteroelement analysis using the Vario MICRO cube analyzer, it was found that a sample of dust from aspiration plants treated with ultrahigh-frequency radiation at a power of 80 W and a duration of 40 min more actively interacts with oxygen to form CO2, which makes it possible to recommend this carbon-containing technogenic material as a reducing agent for smelting metallurgical silicon.

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Section: Introductionmentioning

confidence: 99%

Study of the Properties of Dust from the Production of Prebaked Anodes for its Use as a Reducing Agent in Silicon Smelting

Nemchinova

Tyutrin

Dolgikh

2023

MSF

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“…During steel smelting, the long-term aging of the melt to dissolve the ferroalloys and the averaging of the chemical composition reduces the performance of the furnace units. Reducing steel production costs can be achieved by replacing some of the used standard chromium ferroalloys with spongy doping materials with qualitatively new, more beneficial properties [6].…”

Section: Introductionmentioning

confidence: 99%

Revealing new patterns in resourcesaving processing of chromiumcontaining ore raw materials by solidphase reduction

Borysov

Hevko

Torubara

et al. 2020

EEJET

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Дослiджено фiзико-хiмiчнi властивостi продуктiв вуглецевотермiчного вiдновлення оксидної хромвмiсної рудної сировини. Це необхiдно для визначення параметрiв, що знижують втрати Cr при переробцi рудних матерiалiв i використаннi металiзованих хромвмiсних легуючих добавок у сталеплавильному виробництвi. Визначено, що пiдвищення температури обробки з 1250 K до 1450 K призвело до збiльшення прояву Cr 23 C 6 та (Cr, Fe) 7 C 3. При цьому дифракцiйнi максимуми Cr 2 O 3 вiдповiдали тенденцiї послаблення та пiсля обробки при 1450 K мали залишковий характер. Cr 3 C 2 на дифрактограмах провялявся лише пiсля обробки при 1250 K. Фаза металевого Cr прослiдковувалась в зразках пiсля обробки при 1350 K та 1450 K з пiдсиленням iнтенсивностi прояву при збiльшеннi температури нагрiвання. Визначено, що мiкроструктура продуктiв вiдновлення неоднорiдна з присутнiстю часток рiзного розмiру та хiмiчного складу. З пiдвищенням температури вiдновлення з 1250 K до 1350 K та 1450 K i розвитком вiдновних процесiв мало мiсце спiкання часток з утворенням губчастої мiкроструктури. Виявлено дiлянки, що характеризували включення i фази iз вмiстом Cr до 65,10 % мас., Fe-до 16,13 % мас. Також виявлено окремi локальнi дiлянки з частками з вiдносно високим вмiстом рудних домiшок та вуглецю. З отриманих результатiв дослiдження витiкає, що найбiльш прийнятною температурою для вiдновлення є 1450 K. В цьому випадку забезпечується вiдновлення з переважанням у фазовому складi Cr металевого та карбiдiв (Fe, Cr) 7 C 3 i Cr 23 C 6 вiдносно оксидної складової Cr 2 O 3. При цьому менший залишковий вмiст вуглецю обумовлений бiльш високою ефективнiстю дiї вiдновника порiвняно з iншими температурними режимами. Завдяки губчастiй мiкроструктурi стає можливим бiльш швидке розчинення, порiвняно iз стандартними феросплавами, при цьому реалiзується скорочення часу виплавки Ключовi слова: хромвмiсна оксидна рудна сировина, фазовий аналiз, вуглецевотермiя, карбiд, легування, вiдновлення

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Power and Resourse Efficient Envoronmentally Safe Technology for Processing Dumps of Technogenic Waste From Ore-Dressing and Processing Enterprises

Мешалкин

Бобков

2020

Kms

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This research proposes a systematic approach for the analysis of volumes, physicochemical, granulometric, lithologic and thermal characteristics of waste from ore-dressing and processing enterprises stored in the dumps (tailing dumps) of ore-dressing and processing plants to assess the economic potential of its use in the system of complex power and resource efficient environmentally safe processing including palletizing machines, conveyor indurating machines and ore–thermal furnaces. The obtained results allow the authors to formulate the basic engineering, technological, economic and environmental requirements for complex chemical and power engineering systems of processing technogenic waste from ore-dressing and processing plants, these results make it also possible to define the degree of variability for the characteristics of the waste lots from various dumps. The paper describes the developed intensional and mathematical formulations for the multiscale problem of optimizing chemical and power engineering processes of technogenic raw materials processing in a complex chemical and power engineering system as a problem for discrete dynamic programming. The distinctive feature of this problem is to take into account the spatio-temporal multistage processing in a moving multilayer mass of pelletized raw material, the intensity of the process of internal moisture transfer and the variables for the control flow of the heat carrier gas. It allows increasing power efficiency by intensifying heat and mass transfer processes of multilayer drying, calcination and sintering. The criterion of the efficiency is the minimum cost of electric and thermal energy spent on processing. The obtained results were used to calculate power efficient environmentally safe processing of technogenic waste from ore-dressing and processing enterprises dumps. It was defined that heat and mass transfer processes are intensified, power consumption is reduced and the quality of the finished product is increased in the conditions of optimal power and resource efficient operation for the processing system. Keywords: tecnhogenic waste, waste processing, ore-dressing and processing plant, power and resource efficiency, optimization, system analysis, environmentally safety

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Theoretical basis, modern technologies, and innovations of ferrous metallurgy

Cited by 5 publications

References 0 publications

Study of the Properties of Dust from the Production of Prebaked Anodes for its Use as a Reducing Agent in Silicon Smelting

Study of the Properties of Dust from the Production of Prebaked Anodes for its Use as a Reducing Agent in Silicon Smelting

Revealing new patterns in resourcesaving processing of chromiumcontaining ore raw materials by solidphase reduction

Power and Resourse Efficient Envoronmentally Safe Technology for Processing Dumps of Technogenic Waste From Ore-Dressing and Processing Enterprises

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Theoretical basis, modern technologies, and innovations of ferrous metallurgy

Cited by 5 publications

References 0 publications

Study of the Properties of Dust from the Production of Prebaked Anodes for its Use as a Reducing Agent in Silicon Smelting

Study of the Properties of Dust from the Production of Prebaked Anodes for its Use as a Reducing Agent in Silicon Smelting

Revealing new patterns in resource­saving processing of chromium­containing ore raw materials by solid­phase reduction

Power and Resourse Efficient Envoronmentally Safe Technology for Processing Dumps of Technogenic Waste From Ore-Dressing and Processing Enterprises

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Revealing new patterns in resourcesaving processing of chromiumcontaining ore raw materials by solidphase reduction