Junhong Si, Zelin Yang, Ming Wang, Lei Kan, Guodong Wang, Ruoting Fan
{"title":"Study on Gas Exchange Characteristics and Determination Method of Air Leakage in Goaf","authors":"Junhong Si, Zelin Yang, Ming Wang, Lei Kan, Guodong Wang, Ruoting Fan","doi":"10.3103/s0361521924700174","DOIUrl":"https://doi.org/10.3103/s0361521924700174","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Air leakage between goaf and working face increases the risk of spontaneous combustion in goaf, posing a threat to production safety in the working face. The study uses CFD software to simulate the impact of wind speed and goaf depth on the distribution of air leakage, oxygen concentration, and carbon monoxide concentration. It was found that as wind speed increases, the air leakage plume and CO gas concentration move towards the return air side, and the air leakage speed at the working face boundary and tases with depth, and the range of CO distribution and the range of oxygen distribution on the intake side decrease. Based on this, a dynamic measurement method for air leakage is proposed. The error of wind resistance value comparison is within ±5%, indicating the feasibility of dynamic quantitative measurement of the air leakage flow field at the working face, which can improve the accuracy of air leakage measurement in the working face. Then the method was applied in the 509 working face of Ma Di Liang coal mine. The results show that the average air leakage volume in the goaf of the 509 working face is 152.19 m<sup>3</sup>/min, and the average air leakage velocity is 0.41 m/s.</p>","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Particle Size Study of Natural Mineral Compounds in Lignite","authors":"Yu. V. Larichev","doi":"10.3103/s0361521924700125","DOIUrl":"https://doi.org/10.3103/s0361521924700125","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The particle sizes of main mineral compounds in the structure of lignite were determined using physical methods (SAXS, TEM, and XRD analysis) and chemical processes of selective dissolution. It has been shown that calcium and magnesium compounds in the structure of lignite were present in the form of small nanoparticles with sizes of about 10 nm. Particles consisting of aluminum and iron compounds had larger sizes of about 20–35 nm. Silica-containing particles in the structure of lignite had sizes of 100 nm or greater.</p>","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. I. Vyalov, A. Nastavkin, G. A. Oleynikova, E. Shishov, T. A. Dyu
{"title":"Rare-Earth Elements in Dictyonema Shales of the Baltic Sedimentary Paleobasin","authors":"V. I. Vyalov, A. Nastavkin, G. A. Oleynikova, E. Shishov, T. A. Dyu","doi":"10.3103/s0361521924700095","DOIUrl":"https://doi.org/10.3103/s0361521924700095","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141408649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. V. Bukharkina, M. V. Shishanov, M. S. Luchkin, A. K. Golubkov, A. A. Vologdina
{"title":"Kinetics of Pyrocarbon Formation on the Surface of Carbon Fiber Filament","authors":"T. V. Bukharkina, M. V. Shishanov, M. S. Luchkin, A. K. Golubkov, A. A. Vologdina","doi":"10.3103/s0361521924700071","DOIUrl":"https://doi.org/10.3103/s0361521924700071","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141392896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Highly Effective Carbon Adsorbents Based on High-Moor Peat from the European North of Russia","authors":"I. N. Zubov, Yuliya Savrasova, N. I. Bogdanovich","doi":"10.3103/s0361521924700083","DOIUrl":"https://doi.org/10.3103/s0361521924700083","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141405614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. P. Aduyev, G. Belokurov, I. Liskov, D. Nurmukhametov
{"title":"Ignition of Anthracite Microparticles by Continuous Wave Laser Radiation with Wavelengths of 450 and 808 nm","authors":"B. P. Aduyev, G. Belokurov, I. Liskov, D. Nurmukhametov","doi":"10.3103/s0361521924700058","DOIUrl":"https://doi.org/10.3103/s0361521924700058","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141414516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Activation of the Process of Layer Combustion of Coal with Iron Nitrate and Waste of Metal Rolling Production","authors":"M. K. Shuataev, A. Kaltaev, K. B. Larionov","doi":"10.3103/s0361521924700034","DOIUrl":"https://doi.org/10.3103/s0361521924700034","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. A. Svinukhova, S. A. Yankovsky, A. Misyukova, A. Pak
{"title":"Electric Arc Synthesis of Titanium Carbide Using Carbon Obtained by the Thermal Conversion of Food Industry Wastes","authors":"A. A. Svinukhova, S. A. Yankovsky, A. Misyukova, A. Pak","doi":"10.3103/s0361521924700046","DOIUrl":"https://doi.org/10.3103/s0361521924700046","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141409002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of the Sorption Activity of Native Coals to Atmospheric Oxygen","authors":"Y. Patrakov, S. Semenova, A. V. Yarkova","doi":"10.3103/s0361521924700101","DOIUrl":"https://doi.org/10.3103/s0361521924700101","url":null,"abstract":"","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141401157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}