不锈钢粉尘制备Fe-Cr-Ni-Mn系黑色陶瓷颜料  

Preparation of Fe-Cr-Ni-Mn Black Ceramic Pigment from Stainless Steelmaking Dust

作　　者：李治桥 张翔[1,2] 马国军[1] 郑顶立 刘孟珂 王强[2] LI Zhiqiao;ZHANG Xiang;MA Guojun;ZHENG Dingli;LIU Mengke;WANG Qiang(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学,钢铁冶金及资源利用省部共建教育部重点实验室,武汉430081 [2]武汉科技大学,钢铁冶金新工艺湖北省重点实验室,武汉430081

出　　处：《硅酸盐学报》2022年第6期1557-1565,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金青年科学基金(51904212)。

摘　　要：不锈钢粉尘中所富含的过渡金属元素,如Fe、Cr、Ni和Mn,可用于制备黑色陶瓷颜料,从而实现不锈钢粉尘的无害化、资源化利用,并可为无钴黑色陶瓷颜料的开发提供新途径。根据Fe-Cr-Ni-Mn系黑色颜料的呈色机理,在不锈钢粉尘中添加适量化学试剂Fe_(2)O_(3)、Cr_(2)O_(3)、MnO和NiO,调节上述组分在混合物料中摩尔比为6:1:1:1。研究了不同工艺条件下所烧制黑色陶瓷颜料色度值的变化规律,并对颜料的呈色机理进行探讨。结果表明:烧制温度过高或保温时间过长都将导致含Cr尖晶石相分解,从而对颜料的呈色性能造成不利影响;颜料最佳烧制工艺为烧制温度1175℃、保温30 min、采用随炉冷却方式,所制备颜料的L^(*)值、a^(*)值和b^(*)值分别为37.20、0.13与0.02,其所含主要物相为Fe_(2)O_(3)与复合尖晶石相;颜料对可见光各波段的吸光度基本一致,禁带宽度为0.88 eV,呈纯正黑色,同时颜料颗粒细小、粒径分布均匀、分散性好,尖晶石相平均晶粒尺寸为26.795 nm,且颜料在20~1100℃范围内显示出优异的热稳定性;将颜料应用于制备的陶瓷呈色效果良好,上述结果表明,所制备黑色陶瓷颜料具备优异的着色能力和应用潜力。The rich transition metal elements in stainless steelmaking dust,such as Fe,Cr,Ni,and Mn,can be used to prepare black ceramic pigments.The stainless steelmaking dust can be ultilized to prepare cobalt-free black ceramic pigments.According to the color mechanism of Fe-Cr-Ni-Mn black pigment,an appropriate amount of chemical reagents Fe_(2)O_(3),Cr_(2)O_(3),MnO and NiO was added into stainless steel making dust in a mixed mass ratio of 6:1:1:1.The chromaticity value vibration rules of black ceramic pigments prepared under different conditions were investigated,and the coloring mechanism of the pigments was discussed as well.The results show that a high firing temperature or a long holding time causes the decomposition of Cr-containing spinel phase,adversely affecting the coloring properties of the pigment.The optimum firing process of the pigment is the firing temperature of 1175℃,the holding time of 30 min,and the furnace cooling method.The L^(*),a^(*) and b^(*) values of the prepared pigment are 37.20,0.13 and 0.02,respectively,and the main phases in the pigment are Fe_(2)O_(3) and mixed spinels.The absorbance of the pigment to each visible light wavelength band is basically the same,and the bandgap of the pigment is 0.88 eV.The color of the pigment is black.The average grain size of spinels is only 26.795 nm,and the pigment has a superior thermal stability at 20-1100℃.The ceramic has a good color performance when the pigment is used to prepare the ceramic.It is indicated that the prepared black ceramic pigment with the superior coloring property has a promising application potential.

关 键 词：不锈钢粉尘 黑色陶瓷颜料 过渡金属元素 尖晶石 

分 类 号：TQ174.45[化学工程—陶瓷工业]