Use of Wollastonite from the Koitashskoe Deposit in the Production of Ceramics and Refractory Materials

Results for wollastonite from the Koitashskoe deposit used as a component for manufacturing faience and porcelain products, glazes, and refractory materials are presented. The use of wollastonite gives a positive economic effect, which is seen in the reduction of energy costs and rejection rate, and in the replacement of expensive or not readily available materials without impairment of product quality.     

代铬电镀工艺应用于电筒零件的试验研究

手电筒开关小零件电镀过采用电镀氰化锌铜合金然后挂镀铬的工艺，生产效率低，三废治理费用大。采用滚镀镍再滚镀锡钴锌代铬镀层的方法，可克服上述缺点。测试了组合镀层的耐蚀性和耐磨性能，阐述了代铬镀液维护和故障排除方法。     

Changes in the Structural Phase of Dinas in Calcining Furnaces of Coke Production

Refractories and Industrial Ceramics - This article presents the results of studies that determine the changes in the phase composition and structure of dinas refractories under the operating...     

钢铁件磷化处理液的研究

磷化是应用于钢铁件涂料涂装工序间防锈和增大涂料与钢铁件附着力的有效措施.通过单因素实验和正交实验确定了“四合一”磷化处理液的最佳配方及工艺条件为:磷酸200 mL/L,氧化锌35 g/L,氟锆酸钾2.0 g/L,钼酸钠2.0 g/L,植酸25 mL/L,硝酸10 mL/L,柠檬酸2.0 g/L,硝酸镍1.0 g/L,O...     

Pervoural'skii and Karel'skii Quartzites for the Lining of Crucible-Type Induction Furnaces

Requirements placed on the quartzite-based lining of crucible-type induction furnaces are discussed. The properties of Pervoural'skii and Karel'skii quartzites (P- and K-quartzites) are studied. Mineral impurities (in particular, mica) and their effect on properties of quartzite mixtures are considered. Industrial tests show that the fine-grained, predominantly intergranular mica is mainly responsible for the high wear resistance of K-quartzites. A characterization of the Metchangjarvi quartzite deposit is given and its commercial potential for production of refractory materials is discussed.     

氧化铝基陶瓷密封件的研制与生产

西方阐述了以聚丙烯酸盐作为分散剂,利用注浆成形方法,采用常压高温烧结工艺,研制生产性能优良的氧化铝基陶瓷密封件的工艺过程。     

Dinas refractories based on the lime bond for coke furnaces

Conclusions Tests on dinas refractories with a lime bond in the structure of experimental coke ovens, and the results of a study of their properties after service, confirm their working capability and promise for use in the vertical zone of industrial furnaces.Translated from Ogneupory, No. 7, pp. 36–38, July, 1991.     

Concentrated Kaolin from the Zhuravlinyi Log Deposit for Ceramic Production

It is demonstrated that the method of dry concentration of kaolin from the Zhuravlinyi Log deposit implemented at the Plast-Rifei Company makes it possible to separate kaolin products of different degrees of dispersion and by mixing them in a certain ratio to control the dispersion, the quality, and the ceramic properties of concentrated kaolin, taking into account the requirements of a particular ceramic production.     

Large lightweight Dinas brick for the high-temperature regenerators of blast furnaces

Conclusions The optimum technological parameters and charge arrangements were determined for the production of standard-size and large irregular-shape lightweight Dinas bricks for the heat insulation of the hightemperature zones of the regenerators of blast furnaces of a capacity of 5000 m³.The large irregular-shape lightweight bricks are in production in Section No. 2 of the Pervoural'sk Dinas Plant for the Krivoi Rog Metallurgical Plant.The physicochemical properties of the bricks meet the requirements of GOST 5040-68 for brick of apparent density 1.2 g/cm³.Translated from Ogneupory, No. 3, pp. 7–14, March, 1976.     

Problem of the thermal conductivity of coking Dinas

Conclusions Dinas in service in the wall regions of coking furnaces acquire a zoned structure with different thermal conductivity levels in the zones. The thermal shock resistance of the hot zone is about four times less than that of the remaining zones. The thermal conductivity of the hot zone is determined by the extent of the tridymite crystals in the direction of the thermal current and the degree of development of the direct bond of crystal-crystal. In the zone arranged on the coking side the Dinas is carbonized, preventing growth of crystals of tridymite. The porosity in the range 15–25% does not have any decisive influence on the thermal conductivity of the coking Dinas.To increase the thermal conductivity of the coking Dinas we recommend the incorporation during the production process of additives which control the growth of tridymite crystals, develop a direct bond between them, and remove the carbon during service.An increase in the thermal conductivity of the Dinas is economically effective. An increase in the thermal conductivity of the wall Dinas of 1 kcal/(m · h · deg) reduces the coking time by about 1.8 h, which is equivalent to increasing the output of the coking batteries by 15%.Translated from Ogneupory, No. 2, pp. 48–52, February, 1973.     

提高钛合金零件镀铬结合力

钛合金材料镀铬工艺在航空制造业应用日渐增多,但由于镀铬层与钛合金基体结合力差,造成产品合格率较低,某制造厂家TC6、TC18钛合金镀铬产品合格率仅为50%。对钛及钛合金电镀铬存在的主要工艺难点进行研究,分步对影响因素进行实验,通过对氢化参数及乳白铬层厚度的选择,达到提高镀铬层结合力的目的。     

A Thermal Study of Polymineral Clays of the Gzhel' Deposit

A thermal analysis of clays of the Gzhel' deposit is performed and their mineral composition is established. The effect of various admixtures and minerals and the dispersity on the behavior of the clays during heating is described.     

特高含水多油层油藏稳产技术研究与应用

针对沙二下油藏构造复杂的特点进行油藏精细描述和油藏数值模拟 ,得出剩余油分布规律 ,应用多项技术充分挖潜剩余油 ;完善注采井网 ,解决层间矛盾 ,恢复水驱控制储量 ,提高开发效果。对生产油层多、层间矛盾突出的油藏具有推广应用的价值     

甲基丙烯酸甲酯生产工艺及技术经济比较

从技术性和经济性角度评述了甲基丙烯酸甲酯的生产工艺,包括丙酮氰醇(ACH)法、异丁烯／叔丁醇法、乙烯法和异丁烷氧化法,认为异丁烯直接氧化工艺具有原料来源广泛、收率高、环境污染小的特点。     

基于可视化的注射成型制品缺陷及其产生机理的研究

借助于注射成型可视化实验装置，直接观察并记录了注射成型过程中缩痕、喷射、银纹、气泡等几种典型缺陷的产生过程。分析了这些缺陷的产生机理，为研究排除制品缺陷提供了理论依据。     

Production of high-temperature claydite from loams of the Vladimirovskoe Deposit

The possibility of producing high-temperature claydite on the basis of low-grade overburden rocks (loams) of the Vladimirovskoe Deposit is considered. The correcting additives are taken from industrial waste, namely, solar oil and chamotte-kaolin dust from electric filters of rotary kilns.Translated from Ogneupory, No. 4, pp. 26 – 28, April, 1996.     

汽车零部件涂装前磷化处理添加剂的研究

介绍了磷化液的配制,研究以低沸点卤代烃为基本组分,复合无机物为添加剂的复合活化剂其含量与膜重及膜耐腐蚀性的关系,讨论磷化温度及磷化时间对磷化膜膜重和耐蚀性的影响.此工艺配制简单,成本低,磷化速度快,磷化膜耐蚀性好,具有较好的应用价值.