利用抛光砖废料制备多孔保温建筑材料

陶瓷工业中大量的固体废料不但污染环境,而且废料的处理给生产厂家增加了成本.陶瓷废料的再利用有着广泛的前景.本文以抛光砖废料、高温砂、低温砂以及各种粘土为原料,经球磨、干燥、成形、烧成后研制了以闭口气孔为主,兼具保温隔热功能的新型轻质建筑材料.详细研究了原料组分、原料配方、各工艺参数对材料容重、孔隙率、孔结构、导热系数、机械强度等的影响.所制得的新型建筑材料其容重为0.9,抗折强度6MPa,导热系数0.23W/m · K,耐火度大于1200℃.     

陶瓷废料的综合利用

陶瓷废料的日益增多，不但影响了城市环境，而且限制了经济发展和陶瓷工业的可持续发展。本文分析了陶瓷废料的主要来源和分类，并且探讨了国内外对陶瓷废料的综合利用现状。     

陶瓷废料的综合利用现状

陶瓷废料的日益增多，不但影响了城市环境，而且限制了经济发展和陶瓷工业的可持续发展。本文分析了陶瓷废料的主要来源和分类，并且探讨了国内外对陶瓷废料的综合利用现状。     

陶瓷废料微粉在混凝土中的应用试验研究

陶瓷废料经粉磨所形成的微粉,具有较高的水化活性.本研究将陶瓷废料微粉与粉煤灰复合作为混凝土掺合料使用,通过实 验证明,掺加陶瓷废料微粉可以改善混凝土拌合物性能,提高混凝土的力学性能和抗碳能力,从而开拓了陶瓷废料的应用领域.     

浅析陶瓷工业废料废渣的利用

前言 当前随着社会经济及陶瓷工业的快速发展，陶瓷工业废料废渣日益增多，它们不仅对城市环境造成巨大压力，而且还限制了城市经济的发展及陶瓷工业的可持续发展。因此，陶瓷工业废料废渣的处理与利用已成为陶瓷生产厂家和陶瓷工作者共同关注的课题。为此，笔者根据自己在广东佛山、江苏宜兴、江西、湖北等地所见的陶瓷工业生产现状提出一些建议，仅供同行参考。     

陶瓷废料制备轻质保温泡沫陶瓷的研究

目前陶瓷废料堆积量较大,难以全部回收利用.采用抛光渣、压榨泥、废砖屑三种陶瓷废料为原料制备轻质保温泡沫陶瓷,研究三种陶瓷废料配比、发泡剂含量、烧成温度和保温时间对泡沫陶瓷试样性能的影响.最终采用60wt％的抛光渣、30wt％废砖屑和10wt％压榨泥为原料,添加0.6wt％的SiC作为发泡剂,在1160℃保温时间30 min的条件下制得体积密度0.41 g/cm3、抗压强度3.5 MPa、导热系数0.14 W/(m·K)的泡沫陶瓷材料.研究采用100wt％陶瓷废料烧制泡沫陶瓷,为陶瓷废料综合利用提供了一条可行的途径.     

陶瓷废料的组成与火山灰活性研究

摘要：通过X射线衍射分析、玻璃相含量测定、28d抗压强度比及火山灰活性等试验,研究了陶瓷玻化砖废料、瓷质废料、炻质废料和陶质花盆四种类型陶瓷废料的组成与火山灰活性,为开拓陶瓷废料的应用提供依据。研究结果表明：陶瓷抛光砖粉与废陶瓷玻化砖尽管主要成分相近,但前者氯含量较高,用于水泥混合材受到限制;几种类型的陶瓷废料均具有火山灰活性,其水泥胶砂28d抗压强度比均高于62％,废陶瓷玻化砖为82．1％,瓷质废料为80．8％,炻质废料为78．3％,陶质废料为77．3％。陶瓷玻化砖废料的玻璃相含量较高,瓷质废料其次,炻质和陶质废料的玻璃相含量较低。玻璃相含量较高的陶瓷废料其水泥胶砂28d抗压强度比．较高。     

氧化铝泡沫陶瓷废料的产生和利用

本文简单介绍了氧化铝泡沫陶瓷的生产工艺,分析了氧化铝泡沫陶瓷废料产生的主要原因.通过球磨工艺对其废料进行球磨,球磨20h出球,过80目筛后废料分别按5%、10%和15%比例加入配方中,实验表明,加入10%的陶瓷废料可生产出比原配方强度、抗热震性更好的氧化铝泡沫陶瓷制品.     

抛光砖抛光废料的回收利用途径分析

陶瓷抛光砖抛光废料产出量很大,严重污染周边环境,是困扰抛光砖生产的世界性难题.本文通过对此方面的研究结果,着重论述了陶瓷抛光砖抛光废料回收利用的可行性方法.     

分散剂在陶瓷废料悬浮试验中的应用研究

陶瓷废料是陶瓷行业中所产生的最主要的污染之一,大部分废料被填埋,少部分应用在坯料制备中。为实现资源的循环应用,将废料更多地应用于现代工业,产生经济效益,形成循环经济。本文根据陶瓷废料的特性进行了基础研究,主要是对陶瓷废料的悬浮性能,对水玻璃、NaOH、甲基纤维素等分散剂的敏感性展开研究。     

抛光废渣在陶瓷砖中的应用及现状

瓷质抛光砖生产所产生的废料日益增多,不仅对环境造成巨大的压力,还影响了陶瓷工业的可持续发展,因此抛光砖废渣的处理与利用显得非常的重要。抛光砖废渣是目前陶瓷行业最难利用,也是利用得最少的废料;对抛光砖废渣进行再利用将有着广阔的前景。本文主要对抛光废渣的组成及烧结特性进行了分析,并对抛光砖废渣在陶瓷砖中的应用研究进行了综述,重点阐述了抛光砖废渣在陶瓷砖中的发泡机理。     

陶瓷工业废水治理与综合利用

本文主要介绍了采用平流沉淀池和絮凝剂处理陶瓷工业废水。此方法既解决了排放悬浮物的污染问题,又使废水、废原料得到了综合利用。     

High-temperature cleaning of hot industrial furnace gases by filtering elements made of porous permeable ceramics

The increasing consumption of energy in Russia increases the toxic impact of the power sector on the environment. A new technology of cleaning waste flue gases without cooling them provides not only their effective cleaning from aerosol impurities, but also recovers their substantial heat for producing electricity. It has become possible to solve these problems after the development of a highly porous permeable ceramic material and filter elements made of this material. This new material makes it possible to use hot flue gases as an alternative energy source. __________ Translated from Novye Ogneupory, No. 11, pp. 43–48, November, 2006.     

抛光废料制备隔热保温陶瓷砖

抛光废渣产生量大,回收利用率低,研究大量利用抛光废渣的新途径不仅能解决抛光废渣的处理问题,也将带来巨大的经济效益。本文分析了利用抛光废渣制备隔热保温陶瓷砖的背景、废弃原料处理、抛光渣发泡原理、制备工艺、性能影响因素等。     

有机硅高沸物乙氧基酯化中残液的再利用工艺研究

对大量的有机硅高沸点的混合物经乙氧基酯化后的下层残液进行进一步回收利用,通过水解、水洗、催化裂解、中和等工艺过程,制得中性有机硅水溶液,确定了适于工业化生产的最佳技术路线及工艺操作条件,实现了充分利用废料资源,变废为宝增加企业效益,关化环境的绿色工艺的目标。     

Effects of particle size on microstructure and mechanical strength of a fly ash based ceramic membrane

Recycling fly ash for ceramic membrane fabrication not only reduces solid waste discharge, but also decreases the membrane cost. Now, fly ash is becoming a promising substitute material for ceramic membrane preparation. A significant difference between fly ashes from different plants is the particle size, which makes performances of fly ash membranes unpredictable. The novelty of this work is to clarify the effects of the particle size of fly ash on ceramic membranes, thereby giving practical suggestions on fly ash selection for ceramic membrane preparation. Ceramic membranes were fabricated with different sizes of fly ashes. Effects of particle size on porosity, pore size, microstructure, mechanical strength and gas permeability of the membrane were investigated. Results indicate that a broader particle size distribution of fly ash leads to a denser structure of membrane with a lower porosity. Pore size and gas permeability of membrane increase while bending strength decreases with the particle size increasing. Bending strength of a fly ash membrane is largely determined by large particles in the fly ash because the large particles lead to cracks in the membrane. This work provides experimental bases for developing high performance ceramic membranes from fly ash.     

废陶瓷在含铅废水处理中的应用

目前,中国陶瓷工业废料已逐年增多。潮州是一个瓷都,然而陶瓷废料已对本地环境造成一定的压力。因此,将这些陶瓷废料变废为宝是当前的重要任务。试验证明,掺杂40%瓷土和一定比例淀粉的废陶瓷粉,在800℃下煅烧成型的多孔陶瓷对铅离子有一定的吸附能力,铅去除率达49.2%。上述多孔陶瓷经过再生实验,也取得了理想的再生应用效果。     

Waste recycling of coal fly ash for design of highly porous whisker-structured mullite ceramic membranes

Coal fly ash, a solid state waste massively produced from coal combustion, is considered to be highly hazardous to the environment due to its persistently toxic trace elements. High-value added waste recycling is a promising technique to address this issue. In this work, a waste-to-resource strategy is proposed for design of highly porous whisker-structured mullite ceramic membranes derived from waste coal fly ash and Al(OH)₃ as raw materials and MoO₃ as a single sintering additive. These were characterized in terms of their dynamic sintering behavior, shrinkage, bulk density, porosity, phase evolution, microstructure, pore size distribution, N₂ permeation flux, and mechanical strength. Addition of molybdenum trioxide effectively inhibited the sintering densification of membranes while at the same time forming a metastable low viscosity liquid at lower temperatures. This enables formation of a novel and more highly porous whisker-interlocked structure and accelerates the growth of mullite whiskers with controllable morphologies. Without degradation of mechanical properties, the open porosity increased significantly from 41.65 ± 0.13% to 58.14 ± 0.15% with increasing MoO₃ content from 0 to 20 wt.% without any pore-forming agent, while shrinkage and pore size decreased. The method proposed in this study is expected not only to give a new and facile insight for high-value added recycling of waste coal fly ash but also to fabricate low-cost high performance ceramic membranes with novel structures for further environmental applications.