澳洲锂辉石在卫生洁具坯体中的应用

本文简单介绍了澳洲锂辉石在卫生洁具坯体中的应用及其优点。在坯体中添加一定量的澳洲锂辉石可以代替部分助熔剂,降低玻化温度和减少高温塑性变形;而且还可以降低热膨胀系数,增强坯釉适应性,因此使用澳洲锂辉石是实现卫生瓷坯体配方改革的最佳选择     

宜春锂辉石在耐热陶瓷中的应用试验

用江西宜春锂辉石代替澳洲锂辉石,试制出价廉物美的耐热陶瓷砂锅,为采用国产锂辉石生产耐热陶瓷提供了试验依据。     

澳洲锂辉石在不同陶瓷釉料中的应用

澳洲锂辉石在陶瓷釉料中的应用已越来越广泛，本文介绍了锂辉石在几种主要陶瓷釉料中的具体应用。     

锂辉石对瓷砖坯体玻化性能的影响

本文研究了澳洲高锂,低铁、钛、锰锂辉石对瓷质砖坯体玻化性能的影响,研究结果表明:锂辉石不仅能降低瓷砖坯体的玻化温度,而且还可与滑石混合使用起到助熔效果.锂辉石坯体的助熔机理与长石相似,坯体的显微结构与无锂坯体的显微结构相似,但无锂坯体的烧成温度更高,烧成时间更长.锂辉石坯体的强度有所提高,色泽有所加深;锂离子能在更低的温度下从锂辉石残体中脱离并扩散出去,这样在残体内生成莫来石.     

热烈祝贺四川天齐同北京工业大学的合作项目正式启动——锂辉石在医药玻璃材料中的应用研究与开发课题正式展开

2011年7月上旬,全球储量最大、品质最好的澳洲锂辉石中国区总代理四川天齐矿业有限责任公司同北京工业大学玻璃研究室正式展开了关于＂锂辉石在医药玻璃材料中的应用研究与开发”的项目。     

澳大利亚锂辉石

低膨胀强助熔保品质助发展您还在寻找节能降耗、提高性能的原料吗?——那就请使用玻纤绿色原料澳洲锂辉石吧!澳大利亚锂辉石具有极强的助熔性能和极低的热膨胀系数,并以高品位、低杂质的质量著称于世,素有"工业味精"的美誉。在玻璃配料中添加少量澳大利亚锂辉石,有如下主要作用:可降低熔化温度和高温粘度,拓宽熔制范围,促进澄清均化;提高玻璃硬化速度,改善玻纤成形性能;     

澳洲锂辉石——玻璃行业的新型原材料

正澳洲锂辉石是一种热膨胀系数极低、助熔性极强、品位极高的玻璃原料,素有"工业味精"的美誉。在玻璃配料中添加少量澳洲锂辉石,可降低熔化温度和熔体粘度,拓宽烧成范围,促进澄清均化,减少气泡和杂质;同时,它能降低热膨胀系数,提高产品的抗热震性和耐酸性,减少裂纹,提高玻璃质量和产品理化性能(提高密度、强度、耐内压力和抗冲击性能),以及可改善玻璃表面光洁度和外观质量。澳洲锂辉石是实现玻璃产品上档次,节碱节能,同时是消除部分氟、铅等有害成分,进行科学配方改革的有效途径。     

锂辉石质高档日用细瓷的研究

本文主要以澳洲锂辉石为助熔原料,研制高档日用细瓷,并分析了锂辉石在日用陶瓷坯料及釉料中的作用,同时,探讨了锂辉石的加入量对瓷器各方面性能的影响。通过加入工业氧化铝6%～10%、煅烧滑石1%、B4增塑剂2%(改性膨润土),可成功研制出锂辉石质高档日用细瓷,并确定了高档日用细瓷的坯釉配方组成及工艺控制要点,其产品各项性能指标全部达到高档日用细瓷的指标要求。     

澳洲锂辉石应用技术研讨会暨——2007年度供货计划会隆重召开

2007年元月14-16日，四川天齐实业公司与澳洲夸拉尔公司联合举办的澳洲锂辉石应用技术研讨会暨2007年度供货计划会在中国西部大峡谷温泉别墅隆重召开。[第一段]     

澳洲锂辉石——玻璃行业的新型原材料

正澳洲锂辉石是一种热膨胀系数极低、助熔性极强、品位极高的玻璃原料,素有"工业味精"的美誉。在玻璃配料中添加少量澳洲锂辉石,可降低熔化温度和熔体粘度,拓宽烧成范围,促进澄清均化,减少气泡和杂质;同时,它能降低热膨胀系数,提高产品的抗热震性和耐酸性,减少裂纹,提高玻璃质量和产品理化性能(提高密度、强度、耐内压力和抗冲击性能),以及可改     

Preparation study for the low thermal expansion spodumene/mullite composites

In this work, spodumene/mullite ceramics with low thermal expansion were successfully prepared from spodumene, quartz, talc, and clay. The effects of spodumene content and sintering temperature on the mechanical properties of spodumene/mullite ceramics were investigated. The formed phases were then detected by X-ray diffraction analysis and the microstructures of the sintered bodies were determined by scanning electron microscopy. The interaction effects of the spodumene content and sintering temperature on the apparent porosity and bulk density were studied by response surface methodology. The results demonstrate that an appropriate sintering temperature and spodumene content can promote densification, improve the mechanical properties, and reduce the coefficient of thermal expansion (CTE) of spodumene/mullite ceramics. At the spodumene content of 40 wt.%, the sintering temperature of 1270°C, and the holding time of 90 min, the bending strength was 60.45 MPa, the CTE was 1.73 × 10^–6/°C (α_{[25–650°C]} < 2 × 10^–6/°C), the bulk density was 2.28 g cm^-3, and the apparent porosity was 0.43%. Therefore, this study was of guiding significance for reducing the production cost of spodumene low thermal expansion ceramics and improving product quality.     

FURTHER STUDIES OF PORCELAIN GLAZES MATURING AT HIGH TEMPERATURES1

The investigation covers three fields of glazes: Series A contains 21 glazes with variations in composition as shown in the formula . Series B contains 10 glazes, each having the formula but having their clay content varying triaxially between Florida kaolin, North Carolina kaolin, and Kentucky ball clay No. 4. Series C contains 20 glazes with variations in composition as shown in the formula . The method of experimentation consists of grinding the corner glazes of each series wet, for 18 hours, cross blending the corner glazes to produce the intermediate glazes, applying the glazes by dipping to green porcelain discs, and firing them in commercial periodic and tunnel kilns to temperatures between cone 16½ and cone 19 flat. The glazes were examined with the naked eye and a 10 X pocket lens. The triaxial replacement of CaO by MgO and BaO , as tested, makes practically no change in the appearance of the glazes. With the pocket lens the bubbles in the glazes appear smaller and more numerous, near the BaO apex. When fired in the periodic kilns for 42 hours the transparency of all the glazes in- creases with the temperature. The glazes fired in the tunnel kiln to cone 19 flat in 31 hours are more opaque and smoother than in the periodic kiln at three cones lower temperature. The triaxial replacement of the Florida kaolin, by North Carolina kaolin and Kentucky ball clay No. 4 produces relatively little change in the fired appearance. The glazes containing all ball clay or a mixture of ball clay and North Carolina kaolin overfire at a lower temperature than do those containing all kaolin or a mixture of Florida kaolin and ball clay. The best glazes with 0.2 K₂O and 0.8 CaO have approximately an alumina: silica ratio of 1:9 and 1:11 for the field covered. These glazes are generally more trans- parent than the glazes with 0.3 K₂O; otherwise the results are similar. The conclusions are : (1) that the nature of the firing conditions are of the utmost importance in the development of a glaze, and (2) that an intelligent choice between glazes of equally desirable appearance requires a resort to petrographic method and mechanical tests.     

清凉寺窑汝瓷和张公巷窑青瓷釉的起源关系

为了探讨宝丰清凉寺窑汝瓷与汝州张公巷窑青瓷釉之间的关系,选取清凉寺窑汝官瓷釉样品31个,汝民瓷釉样品4个和张公巷窑青瓷釉样品32个,用中子活化分析(neutron activation analysis,NAA)测定每个样品中的24种元素的含量,并将NAA数据进行主成分分析及等级聚类分析.结果表明:常见着色元素Fe和Co汝官瓷釉的含量显著高于张公巷窑青瓷釉样品;汝官瓷釉料配方比较稳定,原料来源集中;汝民瓷釉料产地分散,且与汝官瓷釉料配方明显不同;张公巷窑青瓷釉料比较分散,但大部分样品与汝官瓷关系较近.由此,可以推断清凉寺窑与张公巷窑之间存在一定的联系.     

Mechanical properties and densification behavior of β‐spodumene/anorthite composites

Although β‐spodumene/anorthite composites are interesting systems, little research work has been done to study their properties. This study aims at investigating the preparation and properties of β‐spodumene/anorthite composites containing β‐spodumene proportions ranging between 10 and 25 mass %. X‐ray diffraction analysis (XRD), Scanning electron microscopy (SEM), and the coefficient of thermal expansion (CTE) were used to characterize the effect of addition of β‐spodumene on the phase relations, microstructure, and thermal expansion behavior of resultant composites. The results show that the presence of β‐spodumene significantly reduces the porosity and reduces the densification temperature. It reduces thermal expansion and enhances the mechanical properties of anorthite‐containing composites.     

R2O-RO-B2O3-SiO2-Al2O3-P2O5-CaF2分相-析晶乳浊釉的形成机理

通过正交试验方法优化釉料组成和烧成工艺，制备了R2O-RO-B2O3-SiO2-Al2O3-P2O5-CaF2多元系光亮无锆的分相-析晶乳浊釉。采用X射线衍射仪、透射电子显微镜／X射线能谱、场发射扫描电子显微镜等研究了釉的显微结构及分相与析晶的形成机理。结果表明：析晶与分相结构并存，分相促进析晶；尺寸接近可见光波长的孤立液滴和所析出的钙钠长石晶体是釉面产生乳浊的根本原因。研究了不同烧成制度对分相-析晶乳浊釉显微结构的影响，发现缓冷釉样的分相液滴尺寸明显大于急冷釉样，急冷釉样中的第二相形貌表里存在明显差异，内部呈球形液滴状，表面则为蠕虫状。     

建筑卫生瓷釉料综述

根据建筑卫生瓷釉粒一般分类、性质等,从原料组成、釉料性质、制备工艺等方面进行较浅显的介绍,并简介了近年来较为新颖的几种装饰釉料,对建卫瓷熔块、釉料作了简单的综述。     

I. DELAYED THERMAL CONTRACTION AND CRAZING OF CERAMIC GLAZES

Experimental rods, glazed with sixteen different glazes, representing various possible types of earthenware glazes, were tested in the Steger stress-measuring apparatus before and after five years of airtight storage. The original stress of all the glazes remained constant within the limit of accuracy of the method, indicating that the delayed thermal contraction of the glazes is negligible.