Quality of refractories and the durability of coke furnaces

Papers presented at the Fifteenth Annual Seminar of Coke and Refractory Specialists are reviewed; the seminar was held in 2008 at OAO Dinur (Pervouralsk, Sverdlovsk Oblast).     

Oxidation resistance in structural ceramics based on refractory materials

Refractory oxygen-free compounds with a melting point above 2500°C show promise for development of thermostressed ceramic materials. The individual use of oxygen-free materials is limited because of their low-temperature oxidability which poses problems for manufacturing technology. Refractory oxide constituents with high thermodynamic stability make it possible to enhance the oxidation resistance of oxygen-free components of a composite system and to allow their use at higher temperatures. __________ Translated from Novye Ogneupory, No. 2, pp. 40–44, February, 2006.     

Company Profile Xixiaoping Refractory(Group)Co., Ltd.

Xixiaoping Refractory (Group)Co., Ltd.includes six sub-companies:Shanxi Xixiaoping Refractory Co., Ltd. and Shanghai New Taishan Refractories Co., Lted.etc.The Group locates in the Northeast of Shanxi Province, where there is abundant minerals resource, and the transportation is convenient.     

Production of refractories from Chinese periclase

Periclase refractories from Chinese periclase are produced by the Chasovo-Yarsky Refractory Plant. The refractories have been tested with positive results at a number of metallurgical works, and specifications have been established for articles.Translated from Ogneupory, No. 1, pp. 21 – 26, January, 1995.     

CHEMICAL AND MINERALOGICAL CHANGES IN STACK AND HEARTH REFRACTORIES OF A BLAST FURNACE*

Refractory samples removed from the lining of a blast furnace exhibiting normal behavior were analyzed for chemical and mineralogical changes. The changes observed in the lining of this furnace are discussed and their probable effect upon the refractory life is indicated; On the basis of the findings, suggestions are made regarding blastfurnace refractory practice.     

High-temperature heat-insulating materials and products of the Morgan Thermal Ceramics Sukhoi Log joint venture

The author describes the activities of the Sukhologki Refractory Works, whose purpose is to increase its sales of competitive products, expand the product range of high-temperature materials, introduce innovative technologies, establish mutually beneficial relations with customers, develop new kinds of highly refractory heat-insulating fibrous materials and products, expand the list of dense and heat-insulating refractory concretes. The joint venture of the Sukholozhskii Refractory Works and the Thermal Ceramics will enable the company to take a better position and become the leader among the Russian producers of heat-insulated materials and products. __________ Translated from Novye Ogneupory, No. 7, pp. 28–31, July, 2007.     

Heat-Insulating Properties of High-Alumina Materials Filament-Reinforced with Glass Fiber of the Al2O3–SiO2 and Al2O3–SiO2–ZrO2 Systems

Refractories and Industrial Ceramics - Refractory heat-insulating materials produced in Russia are characterized. The thermal stability of high-alumina heat-insulating materials filament-reinforced...     

横焰玻璃熔窑蓄热室的种类和耐火材料选择

本文分析了各类横焰熔窑蓄热室的优点及存在的问题 ,讨论了各种环境下蓄热室及格子体的耐火材料选择     

Refractory Clays of the Toretskoe Deposit

Refractory clays of the Toretskoe deposit (Donetsk Region) are described. These clays are white-burning clays and can be used in the production of high-quality porcelain and ceramics for various destinations.     

Properties of Refractory Composites Prepared from Alkaline-Earth Chromates by Self-Propagating High-Temperature Synthesis

Refractory composites MgCrO₄ + Mg + MgO and MCrO₄ + Al + Al₂O₃ (M = Mg, Ca, Ba) prepared by self-propagating high-temperature synthesis (SHS) are studied in model experiments, and their properties and conditions for SHS combustion reactions are discussed.     

Operating experience of the working layer of a 350-ton converter in CW-2 of OAO Novolipetsk Metallurgical Combine

Periclase-carbon linings made from objects supplied by OAO Borovichi Refractory Combine have been tested under operating conditions of converter workshop No. 2 at OAO NLMK in 2007–2008. There is comparative analysis of linings and directions for improving refractory composition are determined. Translated from Novye Ogneupory, No. 11, pp. 7–9, November 2008.     

Aluminum carbide-silicon carbide refractories for lining mobile mixers

In OAO Borovich Refractory Combine technology is developed for preparing highly refractory corundum-silicon carbide-carbon refractories grades KKU and KKF. Features of product composition and structure are considered. Physicochemical and thermal properties are compared with the indices of analogs produced by other enterprises. The distinguishing properties and advantages of using them in lining iron-carrying ladles of the mixer type are established. __________ Translated from Novye Ogneupory, No. 11, pp. 28–30, November 2007.     

Silicon carbide articles for linings of reactors for the production of aluminum chloride

The technological parameters of the production of silicon carbide refractories with a silicon nitride binder are investigated. An experimental industrial batch of refractories has been produced by the Semiluki Refractory Plant and shipped to the Kaustic Production Association to be used in linings of reactors for the production of aluminum chloride. Translated from Ogneupory, No. 9, pp. 15 – 17, September, 1995.     

Optimizing the Plastic Properties of Binding Clays with Use of a Simplex-Lattice Method of Experimental Design

The effect of plasticizers on the plastic properties of refractory clay mixtures is studied. Optimal concentrations for additions are specified. Applications to the serial production of aluminosilicate materials at the Borovichskii Refractory Kombinat Joint-Stock Co. are reported.     

Competitiveness of products: A key to success in an incipient market economy

The Borovichi Refractory Plant has organized the production of new advanced refractories, including graphite-containing articles for continuous casting of steel, a variety of mullite-corundum articles, mortars, and refractories for lining blast furnaces. The prospects for refractory production are considered. Properties of the new refractories and data on their use in the metallurgical industry are presented.Translated from Ogneupory i Tekhnicheskaya Keramika, No. 8, pp. 23–26, August, 1996.     

《炼钢转炉用耐火砖形状尺寸》标准的制订与应用

为起草《炼钢转炉用耐火砖形状尺寸》冶金行业标准（YB／Th60－94）（下简称本标准），导出了大小端差距比为基础的转炉炉衬特殊尺寸参数计算式。用这些计算式定量地比较了当今国际标准、国外先进标准及国内外转炉炉衬结构中各种形状及尺寸砖的优缺点。本标准除体现了国际标准《氧气炼钢转炉用碱性砖》（ISO5019／6）单环等中间尺寸坚宽楔形砖、双楔形砖砌砖优点外，还有以下创新：（1）砖的尺寸系列更趋合理，并拓宽了应用范围；（2）国内外首次列入本标准的尺寸参数及基于尺寸参数的双楔形砖砖环、转量简化计算式，为本标准的设计计算提供精确数据，为其推广实施提供了方便条件；（3）采用本标准的武钢三座90t转炉的三年实践表明，它具有易于成型、制砖、砖的内在质量均一、砌筑操作方便、用后残砖剩余尺寸小且不掉砖及寿命延长30％以上等优点，使武钢转炉炉龄达到国内领先水平并进入国际先进行列，且经济效益显著。本标准由冶金部于1994年9月发布，1995年5月实施，标准水平等级为国际先进水平（Y）。     

Expanding the product range to meet metallurgists’ growing demands

A brief overview of carbon-containing refractory products available from the Semiluki Refractory Plant Joint-Stock Co and areas of their application is given. __________ Translated from Novye Ogneupory, No. 1, pp. 27–30, January, 2006.     

Thermocouple cans for vacuum steel refining plant

Conclusions Refractory cans were produced for the thermocouples used for the continuous measurement of the gaseous medium of the vacuum chamber of a vacuum steel-refining installation. The mullite—silica cans (Technical Specifications 14-8-116-74) are produced by the Podolsk Refractories Plant and will give reliable service for a period of 1–3 months.Translated from Ogneupory, No. 3, pp. 8–11, March, 1977.     

Petrographic investigation of the pore structure of alumina-silica refractory concretes

The results of a petrographic study of the pore structure of chamotte filler, the binder of alumina-silica refractory concretes, and stamped chamotte brick are presented. It is established that the pore structure of vibrationally cast alumina-silica concretes produced at the Semiluki Refractory Works consists mainly of round, closed pores. __________ Translated from Steklo i Keramika, No. 5, pp. 26–28, May, 2007.     

Plastic molding refractory mixes based on highly concentrated ceramic binding suspensions of high alumina fireclay

Refractory mixes of high alumina composition are developed for plastic molding. The mixes are distinguished from more traditional ones by a low clay content (by a factor of 3–5) due to introduction into the mix composition of highly concentrated ceramic binding suspension based on high alumina fireclay that promotes an improvement in the basic physicomechanical properties of articles made from these mixes. __________ Translated from Novye Ogneupory, No. 3, pp. 120–125, March, 2007.