长石原料成分的波动及其控制

主要研究了长石原料成分的波动情况,以及因为其波动所导致的坯料的成分波动,是影响产品质量的主要因素之一。我们针对长石的构成、分布,在配方中的应用以及长石的化学成分的波动情况和因为化学成分波动引起的坯料配方成分的波动,从而引起产品的质量波动,作了较深入探讨。为了控制长石的成分波动所带来的影响,提出了相应的解决措施。并由此提出接近标准的,却没有达到标准的长石,只要控制得当,采取必要的技术措施,是完全可以应用于生产的。     

利用电瓷废料原位合成莫来石陶瓷

为探讨能否用纯电瓷废料合成莫来石陶瓷,本文对比了以电瓷废料细粉为原料,再添加部分Al_2O_3细粉和以纯电瓷废料细粉为原料合成莫来石陶瓷。探讨了原料配比和烧结温度对合成的莫来石陶瓷的结构和性能的影响。采用X射线衍射(XRD)、扫描电镜(SEM)分别研究了莫来石的物相组成与显微结构。研究表明:随着烧成温度升高,莫来石的含量增加,体积密度增大;由于原料采用电瓷废料细粉,烧结活性较大,有利于烧结的进行,并提高烧结密度;采用纯电瓷废料合成的莫来石陶瓷的体积密度和耐压强度最高,气孔率最小,综合性能最优。     

一种橡胶补强剂—改性粘土超细微粉

以矿物粘土为原料，通过选料处理，超细粉碎再用偶联剂干法表面生，可制成性能优良的橡胶补强剂。研究了粘土品种等因素对效果的影响。     

聚氯乙烯/粘土熔融插层复合的研究

用熔融法制备了聚氯乙烯／粘土插层复合材料，用X－射线衍射，TEM等手段表征了复合材料的结构，测定了力学性能，耐热性，耐溶剂性等性能，结果表明，聚氯乙烯熔体能插层于无机粘土和经有机化合物处理过的粘土中，但后者在聚氯乙烯中分散效果更好，所得到的复合材料的性能有了很大的提高。     

热轧温度对TC20合金坯料冷轧成形性的影响

研究了在1000,940,850 ℃不同温度热轧的TC20合金坯料在冷连轧过程中的变形与失稳情况,结合热轧棒材组织和室温压缩的实验结果,表明：热轧温度越低,冷轧成形性越差。850 ℃热轧的TC20合金棒坯纵向组织中α相呈连续纤维状,冷连轧成形性比较差,极限变形量仅40%左右;1000 ℃的热轧坯料组织中β相占比增加,冷连轧变形量可以达到60%,同时,其室温压缩实验过程中断裂压缩率高,塑性变形阶段加工硬化速率较小。通过室温压缩实验可直观评价TC20合金丝材的冷轧成形性能。     

铜尾矿配料时高铁硅酸盐水泥熟料的制备与性能研究

本文研究了采用一种铜尾矿配料时高铁硅酸盐水泥熟料的制备与性能.分析表明,采用这种尾矿配料可获得高质量熟料,而且可完全替代生料中的铁质原料、大幅度降低石灰石及粘土用量.以铜尾矿配料的高铁水泥时最显著的性能是可显著提高水泥的早期强度.结合XRD及熟料结构的岩相检测,本文分析了尾矿配料时熟料的形成过程及最佳煅烧条件.     

弯头推制中金属流动规律的研究

在用机械力将坯料金属管推挤成弯头时，通过研究刻划在坯料表面上正方形网格的变化，可以发现金属管变形时的流动规律，并定量地显示金属坯料沿径向和沿轴向的应变，据此又找到了计算各处壁厚数值的公式，从而可以判断各处壁厚减薄量是否超限。所发现的金属流动规律是：弯头内侧金属向两侧流动，外侧金属不流动，但有部分金属重新分布；弯头外侧壁厚与坯料原料相同，从外侧向内侧壁厚逐渐减薄，内侧壁厚减薄量最大。壁厚分布规律与弯头的实际应用要求一致，因而应当推广推制弯头。     

通城县建材陶瓷产业园项目

正一、项目背景经地质专家勘测,通城县用于陶瓷生产的原料丰富,其中:钾长石储量1亿吨、钠长石储量0.5亿吨、瓷土储量3亿吨、粘土储量2亿吨。未来拟打造以建筑陶瓷、日用陶瓷、工艺陶瓷、浴用陶瓷、电瓷等系列陶瓷为支撑的"华中瓷都",打造华中地区最大的陶瓷产业基地。二、市场分析随着中国陶瓷生产工艺和技术迅猛发展,瓷砖市场个     

冲击式粘土破碎机和湿粘土质原料破碎烘干机

冲击式粘土破碎机和湿粘土质原料破碎烘干机汪一佛（中国建筑材料科学研究院，北京１０００２４）１湿粘土破碎机的工作原理和技术性能１．１工作原理破碎机是由带三个活动辊和板锤转子体等部件组成的破碎系统。它主要借助高速旋转转子体上的板锤，冲击湿土块进行破碎，被...     

丙烯酸/淀粉/高岭土复合高吸水树脂的制备及性能研究

以过硫酸铵为引发剂,N,N'-亚甲基双丙烯酰胺为交联剂,淀粉、丙烯酸、粘土(高岭土、硅藻土、活性白土)等为原料,采用溶液聚合法制备粘土复合淀粉接枝丙烯酸高吸水树脂.探讨了粘土种类、高岭土添加量等因素对产品性能的影响,研究了产品的保水能力,并对原料、产品的结构、形貌进行了分析和表征.     

Effect of High Temperatures on the Properties of Alkali Activated Aluminosilicate with Electrical Porcelain Filler

The effect of thermal pre-treatment up to 1,200°C on the structure and properties of alkali-activated aluminosilicate material containing electrical porcelain filler is analyzed in this article. The material is found to have very good high-temperature resistance. The reasons for its positive response to high-temperature exposure are, on one hand, the formation and subsequent crystallization of akermanite, and on the another hand, melting of electrical porcelain filler in the alkali environment at about 1,150°C and its subsequent reaction with the porous matrix resulting in formation of ceramic bonds. The combination of these two positive effects complementing each other in the formation of a new structure is responsible for the structure compaction indicated by the sudden decrease in porosity and is manifested in quite remarkable improvement of mechanical properties.     

凹凸棒石/油菜秸秆木质陶瓷的制备及性能

为了资源化利用油菜秸秆等废弃物, 以油菜秸秆和凹凸棒石为原料, 以酚醛树脂为黏结剂, 通过复合、 热压、 烧结等工艺过程制备了凹凸棒石/油菜秸秆木质陶瓷。对不同原料质量配比和烧结温度下制备的复合材料进行性能测试。结果表明, 采用该工艺制备凹凸棒石/油菜秸秆木质陶瓷是可行的, 原料的选择、 质量配比、 烧结温度等参数对材料制备过程及性能均有较大的影响。油菜秸秆与凹凸棒石质量配比为1∶2时复合材料的力学性能较好, 烧结温度在600~700 ℃时, 残炭率最高; 在600~800 ℃范围内, 抗弯强度的提高达到最佳; 在800 ℃时, 导电性能得到改善。     

Improving the microstructural and physical properties of alumina electrical porcelain with Cr2O3, MnO2 and ZnO additives

The optimum concentrations of Cr₂O₃, MnO₂ and ZnO were added separately and combined to the basic composition of the alumina electrical porcelain body. The samples were prepared from wet and plastic porcelain bodies according to IEC standard methods. After drying and firing under appropriate conditions, the effects of added oxides on the microstructural and physical properties of sintered porcelain were studied. It was found that the microstructure of this material was remarkably improved compared to one without additives. The sintering temperature was decreased by 60 °C, and at the same time closed porosity decreased considerably resulting in a density increase. The mullite content increased slightly, but both the size and shape of its acicular crystals were limited to values providing formation of a very strong network connecting other crystalline phases in the glassy matrix without any significant internal microcracks. It was concluded that these oxides acted as densification catalysts, partly as mineralizers, and as crystal growth inhibitors causing significant improvement of mechanical, electrical and thermal properties of the alumina electrical porcelain investigated.     

中空吹塑成型机三层型坯机头设计及其关键技术研究

目前,大型中空成型机的机头主要是单层机头,本文以国内外中空成型机的现状研究为基础,在中空吹塑机行业新颖性的提出了三层型坯机头的理念,在原材料的使用方面,三层型坯机头可以采用内层和外层为新料、中间层为再生料的方法,从而减低原材料的成本。此三层型坯机头中空成型机可对每层的原料百分比进行调整,以保证制品每层厚度的要求,从而达到制品的各项性能指标。     

大型空分联合技术发展趋势与相关技术研究

我国化工、煤炭、电力等行业的崛起,给大型空分设备的发展带来了机遇。深入研究大型空分设备的相关技术,对促进我国气体工业高效节能发展具有重要意义。文章从系统联合的角度,探讨了大型空分设备在原料气、净化以及动力方面与其他工业用氧系统的联合形式,着重讨论了空分设备与天然气液化以及LNG冷能利用系统之间的联合技术。在此基础上通过举例,指出了联合流程中参数匹配的重要性,同时给出了一些解决办法。最后讨论了低温条件下板翅式换热器的性能变化及其对传热性能的影响。     

绝缘搪瓷金属基板的研究

本文介绍了电子绝缘瓷釉的发展状况，测定了瓷釉的烧结温度、热膨胀系数、软化点、瓷层厚度、粒度分布等工艺性质以及耐击穿电压、体积电阻率、介电性能等电学性质；对瓷釉颗粒和瓷层进行了SEM分析，对瓷釉进行了TG—DTA和X衍射分析，明确了瓷釉中的析晶温度和结晶相；对比了绝缘瓷釉和ECA瓷釉的电性能；讨论了烧结温度和时间对瓷层形貌。温度和频率对介电性能的影响。     

我国聚丙烯电工薄膜的生产现状及国产化建议

介绍了聚丙烯电工薄膜的特点、生产工艺、种类、应用、生产厂家、生产能力 ,以及对原料的要求 ,并对我国发展电工薄膜用聚丙烯树脂提出了建议     

CVaR约束的钢铁企业贵金属原料采购研究

大型钢铁企业贵金属原料采购的风险是多方面的,但原料本身价格的剧烈波动是最主要的因素之一.为了更好控制贵金属原料价格剧烈波动导致的采购风险,提出把每种贵金属原料看作一个投资工具,引入金融领域的CVaR工具,并针对原料采购领域加以改进,以原料采购期望收益和风险防范联合优化为目标,构建一个基于风险约束的决策模型,研究贵金属原料采购策略.最后以某大型钢铁企业具体实例对所构建的模型优越性进行了验证.     

The possibility to recycle solid residues of the municipal waste incineration into a ceramic tile body

The feasibility of utilising solid residues of the municipal wastes incineration such as grate (bottom) ash and electrofilter and sleeve filter fly ash, in combination with a porcelain stoneware body, in the preparation of tiles has been investigated. While the chemical, mineralogical, thermal and rheological characterisation of the waste raw materials carries out some problems arising by using fly ash, these seem to be overcome with the bottom ash. The introduction of up to 20 wt% of this powder into the ceramic body does not substantially change the mineralogical and thermal behaviour of the product.     

Effect of quartz sand replacement by agate rejects in triaxial porcelain

The ceramics industry, given the high volume of materials processed, stands as one of the largest consumers of natural raw materials but has also the capacity and potential to make significant contributions to solving environmental problems associated with other industries rejects. This work investigates the effects of quartz sand replacement by agate rejects (scrap) in a traditional triaxial porcelain composition. The study was carried out using the design of experiments (DoE) method. Characterization results were used to calculate statistically significant and valid regression equations, relating dried and fired body properties with clay, feldspar and agate scrap contents in the unfired mixture. The regression models were then discussed against X-ray diffraction and scanning electron microscopy results and used simultaneously to delimit the combinations of those three raw materials most adequate to produce a porcelainized stoneware floor tile with specified properties. Thus, an alternative use of an otherwise waste material is proposed, which can be translated into economic benefits and an important and welcome relief on environmental and waste disposal concerns.