煤矸石—黑滑石—铝矾土制备低膨胀高红外瓷质卫生陶瓷的初步研究

发布时间：2018-05-30 21:03

本文选题：煤矸石 + 黑滑石　；参考：《景德镇陶瓷学院》2013年硕士论文

【摘要】：本课题创新地在卫生陶瓷坯体和釉料配方中较大量采用江西萍乡煤矸石废料和廉价的劣质原料江西广丰黑滑石为主要原料,并在坯体中引入铝矾土等原料,采用正交试验法、单因素实验法进行优化,制备了一种膨胀系数低、强度高、红外辐射率高的瓷质卫生陶瓷,技术指标达到：热膨胀系数为(2.99-3.20)×10-6/℃,红外辐射率在0.9-0.96,抗折强度在60MPa以上,烧成范围为1230-1270℃,吸水率为0.5%。通过XRD、红外辐射率测量仪(IR)及其它常规测试等手段分析,结果表明：坯体显微结构中以堇青石为主晶相,使得制品具有较低的热膨胀系数和较高的红外辐射率；在烧成范围内,随着煤矸石和黑滑石用量的变化,样品的红外辐射率波动并不会很大,但随着烧成温度的变化,样品的红外辐射率会有相应变化；菱镁矿的引入,对降低热膨胀系数是有帮助的,但用量不能超过3%；通过对坯体泥浆解凝剂的优化实验,泥浆的解凝剂用腐殖酸钠为好,用量为0.5%；坯体泥浆中加入三聚磷酸钠和木质素磺酸钠的复合增强剂,加入量各为0.15%,生坯强度达到2.45MPa,相比于没加增强剂时样品生坯强度增加了206%。利用煤矸石和黑滑石为主要原料来制备瓷质卫生陶瓷,产品的热膨胀系数低能够延长产品的使用寿命、提升产品的使用环境,并具有功能化的高红外辐射率,对人们的健康非常有利,在以往还没有出现过对低膨胀高红外性能卫生陶瓷的研究。而且较大量地在坯体和釉料中使用煤矸石废料,开辟了废物利用的新途径,对环境保护和工业废物的资源化利用有积极意义。
[Abstract]:In the formulation of sanitary ceramic body and glaze, the main raw material is a large number of Jiangxi Pingxiang coal gangue waste and cheap and low quality raw materials, Jiangxi Guangfeng black talcum as the main raw material, and bauxite is introduced into the blank body. The orthogonal test method and single factor experiment method are adopted to make a kind of low expansion coefficient, high strength and red. The technical indexes of ceramic health ceramics with high external radiation rate are: thermal expansion coefficient (2.99-3.20) * 10-6/ C, infrared radiation rate at 0.9-0.96, flexural strength above 60MPa, the firing range of 1230-1270, 0.5%. through XRD, infrared radiometric measuring instrument (IR) and other conventional tests. The results show that the blank body is microscopic. In the structure, the cordierite is the main crystalline phase, which makes the product have lower thermal expansion coefficient and high infrared radiation rate. In the firing range, with the change of coal gangue and black talc, the fluctuation of infrared radiation rate of the sample will not be very large, but with the change of the sintering temperature, the infrared radiant rate of the sample will change correspondingly; magnesite It is helpful to reduce the coefficient of thermal expansion, but the amount can not exceed 3%. Through the optimization experiment on the slurry depressant, the depressant of the mud is good with sodium humic acid and the dosage is 0.5%; the compound strength agent with sodium tripolyphosphate and sodium lignosulfonate in the slurry is 0.15%, and the strength of the billet is up to 2.45MP A, compared to the increase of the strength of the sample, the strength of the sample is increased by 206%. with the coal gangue and the black talcum as the main raw material to prepare the ceramic sanitary ceramics. The low thermal expansion coefficient of the product can prolong the service life of the product, improve the use environment of the product, and have the function of the Gao Hong external radiation rate, which is very favorable to people's health. There has not been a study of low expansion and high infrared health ceramics, and the use of gangue waste in body and glaze has opened up a new way for waste utilization, and has a positive significance for environmental protection and the utilization of industrial waste.
【学位授予单位】：景德镇陶瓷学院
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TQ174.769

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