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Intensifying the Flotation of Kaa-Khem Coal
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X2460091X
M. P. Kulikova, L. Kh. Tas’ool
{"title":"Intensifying the Flotation of Kaa-Khem Coal","authors":"M. P. Kulikova,&nbsp;L. Kh. Tas’ool","doi":"10.3103/S1068364X2460091X","DOIUrl":"10.3103/S1068364X2460091X","url":null,"abstract":"<p>Preliminary saturation of distilled water with oxygen is studied as a means of intensifying flotation and decreasing the basicity of Kaa-Khem coal.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"553 - 556"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Disposal of Acid Tar in Slow Coking
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X24600921
A. S. Zaporozhchenko, V. V. Bessonov, V. A. Nechaev, N. N. Plekhno, A. N. Nechaev, S. V. Dronov
{"title":"Disposal of Acid Tar in Slow Coking","authors":"A. S. Zaporozhchenko,&nbsp;V. V. Bessonov,&nbsp;V. A. Nechaev,&nbsp;N. N. Plekhno,&nbsp;A. N. Nechaev,&nbsp;S. V. Dronov","doi":"10.3103/S1068364X24600921","DOIUrl":"10.3103/S1068364X24600921","url":null,"abstract":"<p>Existing methods of acid tar processing are discussed. An alternative method is proposed: processing of acid tar from the sulfuric acid treatment of oil fractions by addition to slow coking batch. The coking products of mixtures of conditioned and acid tar are compared. The influence of added acid tar on the yield and quality of the coking products is considered.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"557 - 562"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of Coal’s Mineral Mass by Scanning
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X24600878
A. I. Gavrilova, M. N. Pomortsev, V. K. Popov
{"title":"Identification of Coal’s Mineral Mass by Scanning","authors":"A. I. Gavrilova,&nbsp;M. N. Pomortsev,&nbsp;V. K. Popov","doi":"10.3103/S1068364X24600878","DOIUrl":"10.3103/S1068364X24600878","url":null,"abstract":"<p>It is established that, if a set of coal samples with a broad range of mineral content is scanned and the scans are converted to a histogram in shades of gray, the maximum may be used to characterize the mineral content in the coal. The results of scanning are compared with the ash content of the samples.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"529 - 532"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal Settling Tank Treatment of Coal Mine Wastewater
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X24600945
D. V. Valuev, V. I. Golik, R. Y. Israilov
{"title":"Optimal Settling Tank Treatment of Coal Mine Wastewater","authors":"D. V. Valuev,&nbsp;V. I. Golik,&nbsp;R. Y. Israilov","doi":"10.3103/S1068364X24600945","DOIUrl":"10.3103/S1068364X24600945","url":null,"abstract":"<p>Treatment of coal mine wastewater is considered. The need to improve such treatment technology is established. The two stages of the treatment process are discussed. Settling tank design is improved. Appropriate ranges of impurity deposition with size differentiation are noted.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"567 - 571"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Conditions for the Formation of Deposits on the Rotors of Coke Oven Gas Injectors and in Delivery Pipelines
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X24600908
K. V. Pokryshkin, V. I. Ekgauz, N. V. Dementyeva
{"title":"Conditions for the Formation of Deposits on the Rotors of Coke Oven Gas Injectors and in Delivery Pipelines","authors":"K. V. Pokryshkin,&nbsp;V. I. Ekgauz,&nbsp;N. V. Dementyeva","doi":"10.3103/S1068364X24600908","DOIUrl":"10.3103/S1068364X24600908","url":null,"abstract":"<p>The conditions in which deposits are formed during coke oven gas delivery in the byproduct capture shop of a coke plant are analyzed, and the reasons for their formation are established. The polytropic coefficient in the compression of coke oven gas is determined. A mechanism accounting for the formation of deposits in equipment and gas lines is outlined.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"546 - 552"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effective Removal of Nitrogen Oxides from Smokestack Emissions at Coke Plant
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X24600933
A. Yu. Naletov, E. A. Prosovskaya, M. V. Shishanov, V. A. Naletov
{"title":"Effective Removal of Nitrogen Oxides from Smokestack Emissions at Coke Plant","authors":"A. Yu. Naletov,&nbsp;E. A. Prosovskaya,&nbsp;M. V. Shishanov,&nbsp;V. A. Naletov","doi":"10.3103/S1068364X24600933","DOIUrl":"10.3103/S1068364X24600933","url":null,"abstract":"<p>The formation of nitrogen oxides (NO<sub><i>x</i></sub>) in the smokestack gases of coke plants is investigated; oxides of thermal, fuel, and prompt types are present. Thermal nitrogen oxides are studied on the assumption that nitric oxide predominates. Proportions of different types of nitrogen oxides for use in calculating the total emissions are recommended. Profound removal of nitrogen oxides from the flue gases is proposed, on the basis of selective noncatalytic and catalytic reduction of nitrogen oxides by ammonia. Calculations show that, in noncatalytic reduction, it is expedient to introduce ammonia in the descending regeneration line for furnaces of PK type at a distance of 73 cm from the top of the regenerator, within the 900°C temperature band. Complete consumption of the ammonia surge in a second stage of selective catalytic reduction is recommended. The modules with applied catalyst should be placed in the coke battery flue. Calculations indicate that this method ensures 95% removal of nitrogen oxides, with complete elimination of ammonia from the emissions.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"563 - 566"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strength and Porosity of Special Coke Used in Electrothermal Processes
IF 0.4
Coke and Chemistry Pub Date : 2025-02-04 DOI: 10.3103/S1068364X24600891
G. A. Ulyeva
{"title":"Strength and Porosity of Special Coke Used in Electrothermal Processes","authors":"G. A. Ulyeva","doi":"10.3103/S1068364X24600891","DOIUrl":"10.3103/S1068364X24600891","url":null,"abstract":"<p>The mechanical strength and pore structure of special-purpose coke are determined in classical and thermooxidative coking (heating rate 2.3 and &gt;30°C/min, respectively). The relationship between the coke’s strength and porosity is established. By mercury porosimetry, the volume of the pores and their distribution within the coke are determined. In the thermooxidative coking of long-flame Shubarkol coal, the pore size of the special-purpose coke obtained (800–1200 nm) is an order of magnitude greater than that of regular coke (100 nm).</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 9","pages":"540 - 545"},"PeriodicalIF":0.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coal Concentrate Leaching for Reduction of Ash and Coke Reaction Index and Increasing Coke Strength after Reaction
IF 0.4
Coke and Chemistry Pub Date : 2025-02-03 DOI: 10.3103/S1068364X24600726
Ali Joodi,  Mohammad Karamoozian
{"title":"Coal Concentrate Leaching for Reduction of Ash and Coke Reaction Index and Increasing Coke Strength after Reaction","authors":"Ali Joodi,&nbsp; Mohammad Karamoozian","doi":"10.3103/S1068364X24600726","DOIUrl":"10.3103/S1068364X24600726","url":null,"abstract":"<p>Coal and coke ash play a significant role in the slag formation process within the blast furnace. As the ash content increases, so does the volume of slag, leading to a rise in energy consumption. A high proportion of ash contributes to an increase in the Coke Reaction Index (CRI), consequently reducing the Coke Strength after Reaction (CSR). CSR is a critical parameter determining the coal quality and influencing the blast furnace’s efficiency. The enhancement of CSR relies on reducing the alkalinity of coal ash. To achieve this, dilute acid leaching experiments were conducted using Design Expert software and the response surface method. The optimal outcome revealed a reduction in ash percentage from 7.73 to 4.56% and an increase in CSR index from 35.05 to 59.93%.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 8","pages":"492 - 500"},"PeriodicalIF":0.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Steeping Coal in Lime Solution to Modify the Surface Wettability and Mineralization
IF 0.4
Coke and Chemistry Pub Date : 2025-02-03 DOI: 10.3103/S1068364X24600775
Yu. F. Patrakov, S. A. Semenova, A. E. Majorov
{"title":"Steeping Coal in Lime Solution to Modify the Surface Wettability and Mineralization","authors":"Yu. F. Patrakov,&nbsp;S. A. Semenova,&nbsp;A. E. Majorov","doi":"10.3103/S1068364X24600775","DOIUrl":"10.3103/S1068364X24600775","url":null,"abstract":"<p>This research is part of a cycle devoted to establishing scientific principles for the control of coal’s physicochemical state in the exploitation of beds using injective grouting of cracks by active suspensions. The deactivating mixtures are filtrates of lime suspensions with different concentrations. The samples to which these suspensions are applied consist of long-flame coal of limited metamorphic development, which is highly susceptible to oxidation and self-ignition. Change in its surface wettability is assessed by liquid filtration through a layer of coal powder in a soil model. Steeping coal with suspension filtrates of pH 12.5 is found to produce uniform passivation of the coal surface, with change in its oxidative properties. This is accompanied by increase in wettability and mineralization of the coal surface. That must be taken into account in choosing the parameters of the suspension and the methods of bed deactivation.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 8","pages":"423 - 428"},"PeriodicalIF":0.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing the Relationship between Plastic Layer Development and the Coking Period
IF 0.4
Coke and Chemistry Pub Date : 2025-02-03 DOI: 10.3103/S1068364X24600817
M. V. Shishanov, A. Yu. Naletov, M. S. Luchkin, V. V. Zinovieva
{"title":"Optimizing the Relationship between Plastic Layer Development and the Coking Period","authors":"M. V. Shishanov,&nbsp;A. Yu. Naletov,&nbsp;M. S. Luchkin,&nbsp;V. V. Zinovieva","doi":"10.3103/S1068364X24600817","DOIUrl":"10.3103/S1068364X24600817","url":null,"abstract":"<p>In coking, the extent of the plastic layer and the coking period significantly affect the quality of the coke produced. In the present work, optimal relations are found between the extent of the plastic layer and the coking period, by modeling the extent of the plastic layer and the residence time in the plastic layer. The influence of the mean temperature in the heating wall and the width of the furnace chamber in the coke battery on the extent of the plastic layer is investigated.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 8","pages":"439 - 445"},"PeriodicalIF":0.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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