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Briquetting of the Coke Fines by Stiff Extrusion 用硬挤压法压块焦粉
IF 0.4
Coke and Chemistry Pub Date : 2024-06-06 DOI: 10.3103/S1068364X24701278
Aitber M. Bizhanov
{"title":"Briquetting of the Coke Fines by Stiff Extrusion","authors":"Aitber M. Bizhanov","doi":"10.3103/S1068364X24701278","DOIUrl":"10.3103/S1068364X24701278","url":null,"abstract":"<p>The paper presents the results of briquetting coke breeze using the stiff extrusion method. The possibility of using briquettes based on coke breeze in blast furnace, ferroalloy and coke production has been studied. The role of the granulometric composition of the material and the influence of the method of grinding coke breeze on the strength and behavior of coke briquettes when an external load is applied is shown. Using a shearing extruder to grinding coke breeze before briquetting leads to an increased role of the visco-plastic behavior of briquettes when a destructive force is applied. An overview of the organic and inorganic binding materials used in such briquetting is given. The results of comparative tests of extruded coke briquettes (brex) and roll briquettes from coke breeze for cold and hot strength in tumble tests are presented<b>.</b></p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 2","pages":"94 - 100"},"PeriodicalIF":0.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550101","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
Investigation of Low-Temperature Copyrolysis of Organic Matter from Huadian Oil Shale and Indonesian Lignite 华电油页岩和印尼褐煤中有机物的低温复制分解研究
IF 0.4
Coke and Chemistry Pub Date : 2024-06-06 DOI: 10.3103/S1068364X2470131X
Shixian Fang, Ying Chen, Jinxuan Bao, Xiangchun Liu, Ping Cui
{"title":"Investigation of Low-Temperature Copyrolysis of Organic Matter from Huadian Oil Shale and Indonesian Lignite","authors":"Shixian Fang,&nbsp;Ying Chen,&nbsp;Jinxuan Bao,&nbsp;Xiangchun Liu,&nbsp;Ping Cui","doi":"10.3103/S1068364X2470131X","DOIUrl":"10.3103/S1068364X2470131X","url":null,"abstract":"<p>The mixture of lignite (HM) and oil shale organic matter (OS), which was prepared from Huadian oil shale treated using acids, was copyrolyzed in a fixed-bed reactor at the temperatures of 350‒500°C. Gas chromatography, thermogravimetric analysis, and in situ Fourier-transform infrared (FT-IR) spectroscopy were used to characterize the pyrolysis products. The results showed that the experimental yields of solid product and hydrogen obtained from the copyrolysis were higher than the theoretical values, respectively. The in situ FT-IR results showed that the emissions of ‒OH, aliphatic C‒H<sub><i>x</i></sub>, and C–O groups for HM, OS, and their mixture all increased with increasing temperature. Moreover, a microscopic description of the low-temperature pyrolysis of HM and OS is provided. OS contains a large content of aliphatic compounds that can produce enough H radicals to bind to the H-poor radicals produced from HM. The coupling of these two free radicals resulted in a decrease in the yield of H<sub>2</sub>, while an increase in the yield of solid product was obtained.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 2","pages":"118 - 124"},"PeriodicalIF":0.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513563","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
Recycling of Shale Coke with Liquid Glasses to Produce Heat Insulation 回收页岩焦与液态玻璃以生产隔热材料
IF 0.4
Coke and Chemistry Pub Date : 2024-06-06 DOI: 10.3103/S1068364X24701254
V. Z. Abdrakhimov
{"title":"Recycling of Shale Coke with Liquid Glasses to Produce Heat Insulation","authors":"V. Z. Abdrakhimov","doi":"10.3103/S1068364X24701254","DOIUrl":"10.3103/S1068364X24701254","url":null,"abstract":"<div><p>On the basis of shale coke and liquid glass, a porous filler (heat insulation) with thermal conductivity no more than 0.25 W/m °C may be produced. M350 filler is made by adding 70% shale coke to the liquid glass; that composition is optimal. Research shows that, for a sample of optimal composition, the porosity is less evident on the exterior than in the interior. Observations reveal that the internal structure of the sample consists mainly of closed pores, which result in stronger components than open pores.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 2","pages":"112 - 117"},"PeriodicalIF":0.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513561","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
Some Features of Chinese Coke Plants: Report by a Delegation of VUKhIN Specialists 中国焦化厂的一些特点：武进专家代表团的报告
IF 0.4
Coke and Chemistry Pub Date : 2024-06-06 DOI: 10.3103/S1068364X2470128X
A. D. Stern, K. V. Pokryshkin, A. Ya. Eremin, A. V. Sablin, V. V. Kuprygin
{"title":"Some Features of Chinese Coke Plants: Report by a Delegation of VUKhIN Specialists","authors":"A. D. Stern,&nbsp;K. V. Pokryshkin,&nbsp;A. Ya. Eremin,&nbsp;A. V. Sablin,&nbsp;V. V. Kuprygin","doi":"10.3103/S1068364X2470128X","DOIUrl":"10.3103/S1068364X2470128X","url":null,"abstract":"<div><p>Observations of a delegation of VUKhIN specialists regarding China’s coke plants are noted. The processes and equipment employed are described, and some aspects of coke plant operation are considered.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 2","pages":"82 - 85"},"PeriodicalIF":0.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550099","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
Erratum to: Adsorption of Manganese(II) from Aqueous Solution by Activated Carbon Granules 勘误：活性炭颗粒对水溶液中锰(II)的吸附
IF 0.4
Coke and Chemistry Pub Date : 2024-05-13 DOI: 10.3103/S1068364X24010046
O. V. Belyaeva, E. S. Mikhailova, I. V. Timoshchuk, A. K. Gorelkina, N. V. Gora, N. S. Golubeva
{"title":"Erratum to: Adsorption of Manganese(II) from Aqueous Solution by Activated Carbon Granules","authors":"O. V. Belyaeva,&nbsp;E. S. Mikhailova,&nbsp;I. V. Timoshchuk,&nbsp;A. K. Gorelkina,&nbsp;N. V. Gora,&nbsp;N. S. Golubeva","doi":"10.3103/S1068364X24010046","DOIUrl":"10.3103/S1068364X24010046","url":null,"abstract":"","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 1","pages":"75 - 75"},"PeriodicalIF":0.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411635","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
Erratum to: Automated Control of Sorptional Treatment of Mine Wastewater 勘误：矿山废水吸附处理的自动控制
IF 0.4
Coke and Chemistry Pub Date : 2024-05-13 DOI: 10.3103/S1068364X24010034
S. G. Pachkin, P. P. Ivanov, L. A. Ivanova, A. G. Semenov, E. S. Mikhailova
{"title":"Erratum to: Automated Control of Sorptional Treatment of Mine Wastewater","authors":"S. G. Pachkin,&nbsp;P. P. Ivanov,&nbsp;L. A. Ivanova,&nbsp;A. G. Semenov,&nbsp;E. S. Mikhailova","doi":"10.3103/S1068364X24010034","DOIUrl":"10.3103/S1068364X24010034","url":null,"abstract":"","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 1","pages":"74 - 74"},"PeriodicalIF":0.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411634","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
Composition of Deposits from Coke Oven Gas Lines 焦炉煤气管道沉积物的成分
IF 0.4
Coke and Chemistry Pub Date : 2024-05-13 DOI: 10.3103/S1068364X24600040
K. V. Pokryshkin, V. I. Ekgauz, E. I. Andreikov, N. V. Dementeva, A. V. Anisimov, A. Yu. Pervukhin, A. P. Loginov, D. A. Artyushechkin
{"title":"Composition of Deposits from Coke Oven Gas Lines","authors":"K. V. Pokryshkin,&nbsp;V. I. Ekgauz,&nbsp;E. I. Andreikov,&nbsp;N. V. Dementeva,&nbsp;A. V. Anisimov,&nbsp;A. Yu. Pervukhin,&nbsp;A. P. Loginov,&nbsp;D. A. Artyushechkin","doi":"10.3103/S1068364X24600040","DOIUrl":"10.3103/S1068364X24600040","url":null,"abstract":"<div><p>The properties of deposits in equipment within the machine department (the gas injection machine) and the pipeline delivering coke oven gas are studied, and the process by which they are formed is considered. As an example, attention focuses on the shop for capture and processing of coking products at Magnitogorsk Iron and Steel Works (PAO MMK), which uses various technologies for the cooling and cleaning of coke oven gas.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 1","pages":"10 - 28"},"PeriodicalIF":0.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933188","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
Estimating the Heat of Methane Desorption from Coal by Means of the Temperature Change 通过温度变化估算煤的甲烷解吸热量
IF 0.4
Coke and Chemistry Pub Date : 2024-05-13 DOI: 10.3103/S1068364X24600027
V. A. Bobin, E. N. Kozyreva
{"title":"Estimating the Heat of Methane Desorption from Coal by Means of the Temperature Change","authors":"V. A. Bobin,&nbsp;E. N. Kozyreva","doi":"10.3103/S1068364X24600027","DOIUrl":"10.3103/S1068364X24600027","url":null,"abstract":"<div><p>A method is proposed for assessing the heat of methane desorption from coal on the basis of the temperature change in desorptional induction. The value obtained for the heat of methane desorption is 95 kJ/mol, which is 3–4 times the result obtained by calorimetry. That most likely signifies breakdown of the coal–gas solid solution. The temperature rise in the coal seams into which carbon dioxide is pumped for storage is predicted. A method is proposed for laboratory and shaft experiments on the thermodynamics of desorptional induction.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 1","pages":"1 - 5"},"PeriodicalIF":0.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933425","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
Flocculants and Modifiers for More Efficient Flotation and Processing of Coal Sludge 提高煤泥浮选和处理效率的絮凝剂和改性剂
IF 0.4
Coke and Chemistry Pub Date : 2024-05-13 DOI: 10.3103/S1068364X24600064
V. N. Petukhov, N. Yu. Svechnikova, S. V. Yudina, D. V. Yudin
{"title":"Flocculants and Modifiers for More Efficient Flotation and Processing of Coal Sludge","authors":"V. N. Petukhov,&nbsp;N. Yu. Svechnikova,&nbsp;S. V. Yudina,&nbsp;D. V. Yudin","doi":"10.3103/S1068364X24600064","DOIUrl":"10.3103/S1068364X24600064","url":null,"abstract":"<div><p>Improvement in the efficiency of sludge flotation and processing in coal enrichment by appropriate selection of flocculants and modifiers is considered. Zh coal fines (with a high content of small classes) from the Chertinsk mine (Kuznetsk Basin) enriched at Belovskaya enrichment facility are investigated, with 19.5% ash content. The flocculants employed are acrylamide copolymers: Magnаfloc 380 (М-380), Magnаfloc 10 (М-10), Magnаfloc 525 (М-525), and Magnаfloc 345 (М-345). Their performance is compared with that of widely used flocculants (VPK and KSP polyelectrolytes and Technofloc-TL 1597). Neonol (oxyethylated nonylphenol), which is an effective modifier, is also employed; it consists of a mixture of isomers. The action of flocculants and the subsequent modifier on the coal fines is analyzed on the basis of theoretical and experimental data. Sedimentation analysis shows that anionic Magnаfloc М-10 is the most effective flocculant for positively charged coal dispersions. The flotation efficiency is improved for coal fines treated with Magnаfloc М-10 and then Neonol modifier. Quantum chemical modeling by means of HyperChem software establishes the interaction of Neonol with the polar centers of model compounds in the coal’s organic mass (forming hydrogen bonds) and with the polar centers of Magnаfloc М-10. Analysis of the coal’s flotation properties confirms that the coal surface becomes hydrophobic after flocculation of the coal fines and subsequent treatment with Neonol modifier. After flocculation of the coal sludge and subsequent treatment with Neonol, the concentrate yield in flotation is increased by 2.4%, while its ash content is decreased by 0.3%.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 1","pages":"41 - 48"},"PeriodicalIF":0.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933185","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
Insight Into Upgrading Caking Property of Shenmu Long Flame Coal Using Low-temperature Slow Pyrolysis Treatment 利用低温缓慢热解处理提升神木长焰煤结块性能的见解
IF 0.4
Coke and Chemistry Pub Date : 2024-05-13 DOI: 10.3103/S1068364X24600118
Kangshun Han, Yuan Fang, Shixian Fang, Xiangchun Liu, Ping Cui
{"title":"Insight Into Upgrading Caking Property of Shenmu Long Flame Coal Using Low-temperature Slow Pyrolysis Treatment","authors":"Kangshun Han,&nbsp;Yuan Fang,&nbsp;Shixian Fang,&nbsp;Xiangchun Liu,&nbsp;Ping Cui","doi":"10.3103/S1068364X24600118","DOIUrl":"10.3103/S1068364X24600118","url":null,"abstract":"<p>We proposed a low-temperature slow pyrolysis treatment (LTSPT) to improve the caking property of Shenmu long flame coal (SMCY). To reveal the factors affecting the caking property of SMCY, Fourier transform infrared spectroscopy, solid-state <sup>13</sup>C nuclear magnetic resonance spectroscopy, Raman spectroscopy, and pyrolysis-gas chromatography with mass spectrometric were used to analyze the changes in the chemical properties of the pyrolysis products. The results showed that LTSPT could significantly improve the caking index of SMCY, and it increased with the increase in temperature. LTSPT could decrease the content of oxygen; therefore, the consumption of hydrogen decreased, indicating that the increased hydrogen radicals can be produced, which serve as stabilizers for the aromatic radicals generated from coal pyrolysis. As a result, relatively high-molecular weight aromatic free radicals are inhibited from cross-linking into semi-coke. On the other hand, SMCY with a suitable upgrading degree possessed a suitable content of aromatic hydrocarbons, which are precursors of caking components. The combined effects of the abovementioned two factors led to the increase in caking index.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 1","pages":"49 - 60"},"PeriodicalIF":0.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933399","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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