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Low-cement refractory concrete based on kaolin chamotte aggregate with improved workability 基于高岭土铬酸盐骨料的低水泥耐火混凝土具有更好的施工性
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-8-44-47
V. A. Abyzov, I. E. Leshchenko
{"title":"Low-cement refractory concrete based on kaolin chamotte aggregate with improved workability","authors":"V. A. Abyzov, I. E. Leshchenko","doi":"10.17073/1683-4518-2023-8-44-47","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-8-44-47","url":null,"abstract":"The results of the development of low-cement refractory concrete (LCC) based on a filler made of kaolin chamotte with a maximum application temperature of 1500 o C are presented. It is shown that in order to obtain high rates of workability, narrow fractions of filler with reduced water demand should be used. A comparative analysis of the effectiveness of superplasticizer additives has been carried out, their effect on the properties of kaolin chamotte-based LCC has been evaluated. It is established that the use of kaolin chamotte provides high strength of refractory concrete (more than 50 MPa after drying and first heating to operating temperatures).","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199002","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
Electrodynamic properties of (BeO + TiO2)- ceramics in the centimeter wavelength range BeO + TiO2）- 陶瓷在厘米波长范围内的电动特性
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-10-45-52
A. I. Malkin, N. A. Drokin, V, S. Kiiko, A. N. Korotkov, V. A. Chchetkin
{"title":"Electrodynamic properties of (BeO + TiO2)- ceramics in the centimeter wavelength range","authors":"A. I. Malkin, N. A. Drokin, V, S. Kiiko, A. N. Korotkov, V. A. Chchetkin","doi":"10.17073/1683-4518-2023-10-45-52","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-10-45-52","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"120 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139200702","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
Ceramic composites based on zircon and zirconium dioxide 基于锆石和二氧化锆的陶瓷复合材料
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-9-28-33
V. L. Ugolkov, N. A. Koval’chuk, A. Osipov, L. Mezentseva, A. Akatov
{"title":"Ceramic composites based on zircon and zirconium dioxide","authors":"V. L. Ugolkov, N. A. Koval’chuk, A. Osipov, L. Mezentseva, A. Akatov","doi":"10.17073/1683-4518-2023-9-28-33","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-9-28-33","url":null,"abstract":"Ceramic composites (1 ‒ x)ZrSiO4‒xZrO2 with low thermal conductivity were obtained by sintering nanosized powders in the range of 1000‒1300 °C in air. The fracture surface of ceramic samples after sintering at 1300 °C was investigated and their thermal behavior was studied by dilatometry. The chemical resistance of composites by leaching in distilled water was evaluated. In the future, such ceramic composites can be used as matrices for the purpose of long-term, environmentally safe storage and subsequent final isolation from the environment of individual isotopes of actinide-rare earth fraction of high-level waste (HLW).","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201899","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
Obtaining and investigation of a heat-resistant binder with the additive of metakaolin in the conditions of Uzbekistan 在乌兹别克斯坦的条件下获得并研究含有偏高岭土添加剂的耐热粘合剂
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-7-28-32
Aida Ruzmetova, Zabibulla Babaev, Mirzhalil Yunusov
{"title":"Obtaining and investigation of a heat-resistant binder with the additive of metakaolin in the conditions of Uzbekistan","authors":"Aida Ruzmetova, Zabibulla Babaev, Mirzhalil Yunusov","doi":"10.17073/1683-4518-2023-7-28-32","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-7-28-32","url":null,"abstract":"The purpose of the work is to obtain a heat-resistant binder with the addition of metakaolin from mineral and man-made raw materials of the Aral Sea region. The results of obtaining alumina cement using kaolin, limestone and alumina-containing waste are presented. Effective compositions of alumina cement in the kaolin-limestone-alumina-containing waste system have been developed. To improve the physico-mechanical properties of a heat-resistant binder, the preparation of metakaolin with its subsequent addition during clinker grinding was investigated. The reliability of the obtained results is confirmed by the use of modern physico-chemical methods.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"979 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204242","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
The defects of structural and phase transformations in polycrystalline cerium dioxide under heating in vacuum and in air 多晶二氧化铈在真空和空气中加热时的结构和相变缺陷
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-7-42-51
A. E. Solovyeva
{"title":"The defects of structural and phase transformations in polycrystalline cerium dioxide under heating in vacuum and in air","authors":"A. E. Solovyeva","doi":"10.17073/1683-4518-2023-7-42-51","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-7-42-51","url":null,"abstract":"Structural changes in cerium dioxide, when heated in vacuum in the range of 25‒1600 °C, in air in the range of 25‒1500 °C, and during successive annealing in the range of 1600‒2100 °C in air, followed by quenching in water, were studied. In the crystal lattice of CeO2‒х, the F → F1 phase transformation in vacuum proceeds in the range of 1100‒1600 °C; additionally, at 1200 °C, X-ray lines of the C-type Ce2O3 phase appear. The thermal expansion coefficient of phases of the fluorite type F and F1 in the range of 25‒1500 °C in air, as well as phases of the fluorite type F, F1 and type C Ce2O3 in the range of 25‒1600 °C are determined in vacuum and their dependence on the change in the oxygen content in the CeO2‒х crystal lattice was found. The kinetic conditions for reduction of cerium dioxide in vacuum and oxidation in air are different. The cubic structure of the fluorite type F CeO2‒х, when the samples are heated in air, is preserved up to 1800 °C with the content of anionic vacancies, at 1900 °C the transformation F → F1 occurs. The formation of loops, edge and screw dislocations in the structure of cerium dioxide grains after annealing of samples in the range of 1900‒2100 °C in air were discovered for the first time. The decomposition of the structure F1 into cerium oxide phases of types F and C proceeds at 2100 °C along the height and boundaries of screw dislocations. It was found that fragments of the C-type phase of cerium oxide are located on loops along the height of screw dislocations, which indicates the movement and evaporation of these fragments. When the samples are oxidized at 1600 °C in air, the black-colored C Ce2O3‒х phase in a gradient of different concentrations moves along certain trajectories to opposite ones. grain boundaries, abuts against dislocation loops, bends them, and oxidizes to phases F1 and F. In the structure of polycrystalline cerium dioxide, when heated in vacuum and in air, certain concentrations of defects control phase transformations.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"100 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204475","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
Thermal enrichment of gold- bearing sulfide mineral material using centrifugal flotation 利用离心浮选热富集含金硫化物矿物材料
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-9-11-15
S. Davydov, A. N. Semin
{"title":"Thermal enrichment of gold- bearing sulfide mineral material using centrifugal flotation","authors":"S. Davydov, A. N. Semin","doi":"10.17073/1683-4518-2023-9-11-15","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-9-11-15","url":null,"abstract":"Depleted gold-containing sulfide mineral materials can be used in cement production, in the construction industry, in road construction and other sectors of the national economy. This will allow metallurgical enterprises to switch to low-waste or non-waste technology. Studies and practice of ore dressing with a high degree of sulfidity show that gold extraction is directly dependent on the degree of sulfidity of the ore and the content of the main ore sulfide minerals in it. To increase the efficiency of gold extraction, a device for enriching gold-containing sulfide materials using centrifugal flotation is proposed","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139207805","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
Finite element modeling of heat generation in a brake unit of heavy-duty tribosystems 重型摩擦系统制动单元发热的有限元建模
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-10-57-61
Статья Редакционная
{"title":"Finite element modeling of heat generation in a brake unit of heavy-duty tribosystems","authors":"Статья Редакционная","doi":"10.17073/1683-4518-2023-10-57-61","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-10-57-61","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139202436","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
Features of obtaining ceramic materials from sintering-active powders 从烧结活性粉末中获取陶瓷材料的特点
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-10-14-21
V. G. Maksimov, N. M. Varrik, V. Babashov
{"title":"Features of obtaining ceramic materials from sintering-active powders","authors":"V. G. Maksimov, N. M. Varrik, V. Babashov","doi":"10.17073/1683-4518-2023-10-14-21","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-10-14-21","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"434 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204319","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
The influence of the glass phase of fused refractories on their operational and technological properties 熔融耐火材料的玻璃相对其操作和技术性能的影响
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-9-3-10
V. Sokolov, S. Kirov, M. Gasparyan
{"title":"The influence of the glass phase of fused refractories on their operational and technological properties","authors":"V. Sokolov, S. Kirov, M. Gasparyan","doi":"10.17073/1683-4518-2023-9-3-10","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-9-3-10","url":null,"abstract":"The properties of the glass phase of fused refractories containing 28‒94 % ZrO2 are given. The influence of the glass phase composition on the main performance properties of refractories ― corrosion resistance and tendency to release defects is considered. It is shown that a decrease in the amount of glass phase in fused baddeleyite-corundum  refractories with a simultaneous increase in the amount of ZrO2 leads to an increase in their corrosion resistance and complication of the  annealing conditions of products. The properties of the glass phase, which determine the tendency of refractories to release defects, depend mainly on the SiO2 : Na2O, the purity of raw materials and the method of melting the charge. Oxidative melting with the treatment of the melt with an oxygen-gas mixture is a prerequisite for the formation of a refractory glass phase in refractories and the production of products with a low tendency to the release of defects.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":" 43","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139197613","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
Surface defects and shape defects of ceramic fibers from refractory oxides 难熔氧化物陶瓷纤维的表面缺陷和形状缺陷
NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-6-62-66
E. V. Stepanova, V. G. Maximov, Yu.A. Ivakhnenko
{"title":"Surface defects and shape defects of ceramic fibers from refractory oxides","authors":"E. V. Stepanova, V. G. Maximov, Yu.A. Ivakhnenko","doi":"10.17073/1683-4518-2023-6-62-66","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-6-62-66","url":null,"abstract":"The present article discusses ceramic fibers of refractory oxides used as the main components of heat-resistant refractory materials. Obviously, external defects affect the mechanical characteristics of refractory oxide ceramic fibers. In this regard, using optical and electron microscopy, the morphology of the surface of ceramic fibers was investigated, defects were classified, analysis was carried out, the causes of their occurrence were established and methods for their elimination were proposed.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201877","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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