Chamotte and semiacid ladle brick from Barzassk clays

Conclusions The Barzassk (basic O1 and O2, and semiacid PK1) clays are suitable for making chamotte and semiacid ladle brick. The production of refractories from these clays can be organized using the technological production scheme for chamotte articles made by semidry pressing. In order to increase the strength of the green products made from semiacid clays it is necessary to reprocess the bodies with an addition of sulfite lye on runner mixers with rollers.The resistance of the experimental chamotte and semiacid brick in a 300-ton ladle was practically the same as that of ladle brick made from Buskul'sk clay produced by the Magnitogorsk Metallurgical Combine.Translated from Ogneupory, No. 5, pp. 1–5, May, 1969.     

Ladle brick from semiacid clays

Conclusions The main feature of the technology developed for the production of high-density ladle brick which expands in service, made from semiacid clay from Chasov Yar and Druzhkov sources, is the regular firing cycle for the chamotte and the finished products, namely completion of firing in the temperature range in which we can guarantee sintering of the material, but in which bloating has not yet begun.The life of the ladle brick in service made from semiacid clays is greater than that of high-chamotte ladle brick owing to the high density of the structural joints, governing the expansion of the working layer of the brick coming into contact with metal and slag.Mass production of semiacid ladle brick using the technology developed by VIO should be organized in refractory plants of the UkrSSR.Deceased.Translated from Ogneupory, No.2, pp.14–17, February, 1967.     

Semiacid clays for making ladle brick

Conclusions The close relationship between the mineral composition, primary and secondary structures of clays, and their properties was confirmed.From semiacid clays we obtained ladle brick whose resistance in service is as good as that of high-grog brick made by the Borovich Refractories Combine.Translated from Ogneupory, No. 4, pp. 22–26, April, 1967.     

Refractory products from semiacid clays from the Barzassk region

Summary The main advantage of ladle semiacid refractories, having the same life as fireclay, is their low cost owing to the use of cheap, local raw materials and small contents of expensive grog.According to approximate calculations, the saving from the use of local semiacid clays and the reduction in grog consumption should be about 6 rubles per ton of goods at the KMC.     

Production of ladle and checker brick from Arkalyk raw material

Conclusions Ladle brick with a considerably longer life than conventional chamotte ladle brick is manufactured from Arkalyk rock without clay additions.Checker brick made of high-alumina chamotte and Latnaya clay is recommended for the checker work of regenerators; less melting dust was noted than in chrome-magnesite brick checkers.The basic variety of Arkalyk rock is suitable for the production of chamotte ladle brick without clay additions; the life of this ladle brick is as long as that of conventional brick used at Borovichi Combine. Increased compression would allow the production of higher-strength brick.     

Ural clays for building brick production

The chemical-mineral composition and technological properties of two varieties of low-melting clays used in production of building brick are investigated. It is found that based on the blend of these types of clay and using metallurgical slag as an additive, it is possible to obtain a ceramic mixture with minimum drying sensitivity and mechanical strength after firing at a temperature of 950°C at least equal to 12.5 MPa. Translated from Steklo i Keramika, No. 5, pp. 25 – 27, May, 1998.     

不烧铝尖晶石钢包砖的研究

研究了不烧铝尖晶石钢包砖的结合剂、基质组成及相变化,提出了基质中相组成的计算公式。生产的不烧铝尖晶石钢包砖,在钢包渣线部位使用,取得了较好的使用效果。     

钢包用刚玉-尖晶石砖

以电熔白刚玉、电熔尖晶石、氧化铝微粉为主要原料,经高温烧成,制成高纯刚玉－尖晶石钢包衬砖。制品性能优良,耐渣蚀、抗渗透。在钢包上使用取得良好效果