J. of Advanced Engineering and Technology Vol. 1, No. 1 (2008) pp. 77-81 y w» e wx Á w œw Fabrication of Ceramic Batch Composition for Porcelain by Using Recycled Waste Ceramic Powder Hyun Guen Han, and Jong Kook Lee Dept. of Advanced Materials Engineering, Chosun University, Gwangju, 501-759 Korea (Received : Sep. 01, 2008, Revised : Sep. 04, 2008, Accepted : Sep. 23, 2008) Abstract : Porcelain ceramics by mixing recycled waste ceramic raw materials and normal ceramic raw materials were prepared to reduce the manufacturing cost. The waste ceramic raw materials were recycled by crushing and ball milling waste porcelain bodies. The mean particle size of recycled ceramic raw materials after milling was 22 ~ 40 µm with irregular shape and narrow particle size distribution. Shrinkage and sintered density of compacts obtained from recycled ceramic batch composition increased with increasing sintering temperatures. However, the sintered density was independent on the amount of the recycled ceramic raw materials. The batch composition containing 30% of recycled ceramic raw materials showed the highest sintered density. Sintered density decreased over the temperature of 1200 o C due to the presence of cracks on surface and in bulk. Keyword : recycled ceramic powder, waste porcelain, batch composition, sintered property 1. y w w w ù ƒ y»» wš. z {» m š, š. w s» qr» œ œ w w w s» s» qr ( 5~10%)¾ w w s» qr 10~20 m. s» qr ù gj p, ƒƒe y š š ƒƒe y š [1-2]. š ƒƒe y wùƒ» y w, s» qr w» y w» j» Corresponding Author Tel : 062-230-7202 E-mail : jklee@chosun.ac.kr y w d w. w s» l» ü w w»» û, w s» qr w x y» w w. s» y w y wš, l x y» w, s» y, y» w y y w d ƒ. w» œ w s» w d w,» t v, w» w» ƒ j š. s» qr y w» w qr ƒ 20 ~ 50 µm w, sw w e w û. s» qr l w» 77
78 wx Á ƒ wš, w» ƒƒ ƒw» e s» y ƒ w w z š w. w y y» z,» ƒ w, w s» y w j» w. 2. x w s»» ù y w s» qr w. s» qr j (jaw crusher) š 1 w z j (roll crusher) w 0.1~1cm j» w, 2 w» ƒ w. s» y XRD(X-ray diffraction) z w ww š, s C370 Particle Analysis System w w. x (FE-SEM) w ww, (TG-DTA) w w. e yww 10 kg» w,» s» y»» z 30%, CF44 0.2% ƒƒ ƒw yww. s» ƒ e Table 1 ùkü» s» y ƒƒ 0, 10, 20, 30, 40, 50% ƒw w, yw z w wš x» w m ü œ»d w w. 3. š Figure 1 s» qr Ÿw x q ùkù SEM ùkü.» qr t 100 µm Ì e w d š, ü»œ w d y w. d d»œx ùkû, w»œ d ƒ ƒ sz»œ x š, d e y ƒ ù x»œ sw. Figure 2 s» XRD., s» ƒ š m(kaolin), (quartz), (feldspar) vjƒ 6CDNG%GTCOKE$CVEJ%QORQUKVKQP#FFKPI9CUVG2QTEGNCKP 2QYFGT Batch composition Recycled powder (%) Normal powder (%) A 0 100 B 10 90 C 20 80 D 30 70 E 40 60 F 50 50 (KIWTG('5'/OKETQITCRJQHYCUVGRQTEGNCKPDQF[ š, s» ƒw e Mullite (3Al 2 O 3 Á2SiO 2 ) vj. y s d w» w D 1 w Figure 3 ùkü. j» 10 ~ 100 µm s ùkþ, s³ j» 22 ~ 40 µm. s» ƒ ƒ w s³ j» f w. Figure 4 25 C o 1,000 C¾ o TG-DTA ù kü. e 500~600 o C k ƒ ùš 700 o C œw» 1«1y (2008)
y w» e 79 (KIWTG:4&RCVVGTPUQHCPQTOCNRQYFGTCPFDTGE[ENGF RQYFGT yw w š pƒ x. x w e x w (Figure 5), s» ƒ A q 0.5 µm q 3µm j» ƒ y w, s» ƒ ƒw ü w j ƒw. e Figure 6 ùkü, ƒ ƒ ƒw ƒw. 1,000 o C l 1,150 o C ƒ f, 1,150 o C w 1,200 o C w. w ƒ ƒw ƒ ƒw ƒ 1,000 o C l 1,200 o C j ƒw. ù 1,200 o C w ƒ 2.3 g/cm 2 (KIWTG2CTVKENGUK\GFKUVTKDWVKQPQHTGE[ENGFYCUVGRQTEGNCKP RQYFGTYKVJVJGCOQWPVQHYCUVGRQTEGNCKPRQYFGTC w. y ƒ e 1200 o C ƒ w q. w» 1,350 o C 150 o C û d w q. s» ƒ y e yƒ w 1,150 ~ 1,200 o C r J. of Adv. Eng. and Tech., Vol. 1, No. 1 (2008)
80 wx Á (KIWTG6)&6#CPCN[UKUQHTGE[ENGFYCUVGRQTEGNCKP RQYFGTYKVJVJGCOQWPVQHYCUVGRQTEGNCKPRQYFGTC r, y ƒ 20 ~ 30% r ƒ j y w. Figure 7 1200 w r q FE-SEM w. s» ƒ ƒ r w ³ e w ù ƒ 50% r ü ³ (KIWTG('5'/OKETQITCRJUQHTGE[ENGFRQTEGNCKPRQYFGT YKVJVJGCOQWPVQHYCUVGRQTEGNCKPRQYFGTCD CPFE w r w ƒ û. 4.» s» y ƒw» wš, y ƒ œw» 1«1y (2008)
y w» e 81 (KIWTG5JTKPMCIGTCVGCPFUKPVGTGFFGPUKV[QHTGE[ENGF YCUVGRQTEGNCKPDCVEJEQORQUKVKQP e w š w. s» ƒ w y s³ j» 22 ~ 40 µm. s» ƒw e ƒw r w ƒ ƒw, ƒ 20 ~ 30% ƒ ƒ. s» e r e yƒ 1200 o C š, w. w l s» ƒw e w 1200 C o q š, w» w 150 o C» d w. s» 20 ~ 30% ƒw y r r w ³ w ùkü s» 40% ƒw r r ü ³ w š, w w. (KIWTG('5'/OKETQITCRJUQHHTCEVWTGUWTHCEGTGE[ENGF RQTEGNCKPYKVJVJGCOQWPVQHYCUVGRQVVGT[RQYFGTC š x (1) Kang, S. G., Lee, W. J., Hwang, I. D., Park, and Chung, Y. J., Properties of Concrete Using Waste Pottery and Porcelain as Aggregates, J. KOR. Ceram. Soc., 42(2), 99 (2005). (2) A. Henrichsen, Use of Recycled Aggregates in Europe, International workshop on recycled Concrte, JSPS 76 Committee on Construction materials, 1-8 (2000). J. of Adv. Eng. and Tech., Vol. 1, No. 1 (2008)