Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-9-52-55
Al. A. Eminov, B. T. Sobirov, A. Eminov
Optimal material and charge compositions of technical ceramics for grinding media have been developed. It has been established that the best indicators of the material composition and technological properties have prototypes of ceramic masses with alumina content from 55,25 to 64,93 wt. % for obtaining mullite ceramics, as well as 65,79 to 74,21 wt. % for obtaining mullite-corundum ceramics. The possibilities of using kaolins of various grades for the development of new compositions of grinding media for low-temperature sintering are shown.
{"title":"Composition of technical ceramics of low-temperature sintering for grinding bodies","authors":"Al. A. Eminov, B. T. Sobirov, A. Eminov","doi":"10.17073/1683-4518-2023-9-52-55","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-9-52-55","url":null,"abstract":"Optimal material and charge compositions of technical ceramics for grinding media have been developed. It has been established that the best indicators of the material composition and technological properties have prototypes of ceramic masses with alumina content from 55,25 to 64,93 wt. % for obtaining mullite ceramics, as well as 65,79 to 74,21 wt. % for obtaining mullite-corundum ceramics. The possibilities of using kaolins of various grades for the development of new compositions of grinding media for low-temperature sintering are shown.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139207605","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-6-34-38
M. Antipov, P. Bazhin, A. Chizhikov, A. Konstantinov
In this work, high-temperature annealing in an oxidizing atmosphere at temperatures of 800, 900, 950 and 1000 oC for 10 hours of cermet materials based on titanium carbide and nichrome was carried out, using the SHS-extrusion method. On the basis of experimental data, dependences of weight gain on temperature and annealing time were plotted. On the basis of X-ray phase analysis and the results of scanning electron microscopy, it was found that the carbide phases do not change stoichiometry, a new CrNi3 phase is detected, and oxide films (TiO2 and Cr2O) are formed on the surface of the body. It has been established that with an increase in the annealing temperature, TiC carbide grains grow from 2,79 to 3,4 µm.
{"title":"High-temperature annealing of ceramic materials based Ti-C-NiCr","authors":"M. Antipov, P. Bazhin, A. Chizhikov, A. Konstantinov","doi":"10.17073/1683-4518-2023-6-34-38","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-6-34-38","url":null,"abstract":"In this work, high-temperature annealing in an oxidizing atmosphere at temperatures of 800, 900, 950 and 1000 oC for 10 hours of cermet materials based on titanium carbide and nichrome was carried out, using the SHS-extrusion method. On the basis of experimental data, dependences of weight gain on temperature and annealing time were plotted. On the basis of X-ray phase analysis and the results of scanning electron microscopy, it was found that the carbide phases do not change stoichiometry, a new CrNi3 phase is detected, and oxide films (TiO2 and Cr2O) are formed on the surface of the body. It has been established that with an increase in the annealing temperature, TiC carbide grains grow from 2,79 to 3,4 µm.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139198617","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-8-44-47
V. A. Abyzov, I. E. Leshchenko
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).
{"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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-10-27-30
I. A. Datsko
.
.
{"title":"Influence of the amount of ZrO2 additive on the creep of the basic refractory","authors":"I. A. Datsko","doi":"10.17073/1683-4518-2023-10-27-30","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-10-27-30","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"127 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139206839","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-8-60-65
N. M. Varrik, I. E. Salimov, V. Babashov, A. A. Shavnev
The article presents an overview of the existing types of binders for heat and sound insulation made of glass and mineral fibers. The interest in the development or modification of binders for the manufacture of thermal insulation used in the transport, construction, and industrial sectors is due to increased requirements for their operational characteristics, as well as fire and environmental safety requirements. Trends in the development of binders for fibrous thermal insulation materials that meet modern requirements are indicated: thermal protection systems must have sufficient strength and flexibility to maintain their integrity during manufacture, transportation and installation in target volumes, sufficient elasticity to restore volume after compression, low specific gravity, low coefficient of thermal conductivity, resistance to flame, low smoke emission and resistance to moisture gain during heating and cooling.
{"title":"Binders for materials based on glass and mineral fibers (overview)","authors":"N. M. Varrik, I. E. Salimov, V. Babashov, A. A. Shavnev","doi":"10.17073/1683-4518-2023-8-60-65","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-8-60-65","url":null,"abstract":"The article presents an overview of the existing types of binders for heat and sound insulation made of glass and mineral fibers. The interest in the development or modification of binders for the manufacture of thermal insulation used in the transport, construction, and industrial sectors is due to increased requirements for their operational characteristics, as well as fire and environmental safety requirements. Trends in the development of binders for fibrous thermal insulation materials that meet modern requirements are indicated: thermal protection systems must have sufficient strength and flexibility to maintain their integrity during manufacture, transportation and installation in target volumes, sufficient elasticity to restore volume after compression, low specific gravity, low coefficient of thermal conductivity, resistance to flame, low smoke emission and resistance to moisture gain during heating and cooling.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139208857","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-9-11-15
S. Davydov, A. N. Semin
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
{"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}
Pub Date : 2023-11-30DOI: 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}
Pub Date : 2023-11-30DOI: 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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-9-3-10
V. Sokolov, S. Kirov, M. Gasparyan
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.
{"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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-6-62-66
E. V. Stepanova, V. G. Maximov, Yu.A. Ivakhnenko
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.
{"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}
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