Alunite로부터 CaOㆍ2Al<SUB>2</SUB>O<SUB>3</SUB>의 합성

이철태; 김영안; 엄면헌; 유영홍

HWAHAK KONGHAK, Vol.28, No.5, 507-517, October, 1990

Export Citation

Alunite로부터 CaOㆍ2Al₂O₃의 합성

Synthesis of CaO2Al₂O₃ from the Alunirw

이철태, 김영안, 엄면헌, 유영홍

초록

Alunite를 분해 침출시킴으로서 용출된 Al성분과 석고를 이용하여 공침법에 의해 CaOㆍ2Al₂O₃를 제조하는 새로운 공정을 조사하였다. 합성된 CaOㆍ2Al₂O₃ 는 공침물인 CaCO₃ㆍ4Al(OH)₃를 1000℃에서 소성함으로서 얻어지며, 이 공침물 CaCO₃ㆍ4Al(OH)₃는 pH:7.5의 조성하에서 정량적으로 공침되었다. 얻어진 CaOㆍ2Al₂O₃ 는 고균질도를 유지하였으며 내화도 SK 35의 성능을 나타내었다.

This study was carried out to find a new process for the production of CaOㆍ2Al₂O₃ from the Al contain-ing solution which was obtained from domestic alunite and gypsum by the co-precipitation method. Synthetic CaOㆍ2Al₂O₃ could be produced by calcining the co-precipitate CaCO₃ㆍ4Al(OH)₃ at 1000℃ and he pH for co-precipitation of CaCO₃ㆍ4Al(OH)₃ was 7.5. Synthetic CaOㆍ2Al₂O₃ from this study had good homogeneity and refractoriness of this material was SK 35.

[References]

Robson TD, "High-Alumina Cements and Concretes," p. 232, John Wiley & Sons, Inc. (1962)
Lea FM, The Chemistry of Cement and Concrete, 3rd, ed., Chemical Publishing Co. Inc., p. 490 (1970)
최형섭, "광석처리공학," 탑출판사, 1st ed. (1981)
Han KS, Choi SU, Song TU, J. Korean Ceram. Soc., 16(3), 164 (1979)
Park CO, J. Korean Ceram. Soc., 10(2), 74 (1973)
Kim BH, Byun JD, J. Korean Ceram. Soc., 17(2), 96 (1980)
Lee CT, Namgoong Y, Yoo YH, HWAHAK KONGHAK, 26(3), 295 (1988)
Park YS, Lee CT, Yoo YH, HWAHAK KONGHAK, 24(4), 291 (1986)
Park YS, Lee CT, Yoo YH, HWAHAK KONGHAK, 24(5), 399 (1986)
최한석, "무기공업화학," 동명사, 355 (1983)
Faurholt C, J. Chem. Phys., 22, 1 (1925)
Pinsent BRW, Pearson L, Roughton FJW, Trans. Faraday Soc., 52, 1594 (1956)
홍상의, 이철태, 유영홍, "생기연논문집," 고려대학교, 22 (1986)
A.S.T.M. Card 10-173
A.S.T.M. Card 23-1037
A.S.T.M. Card 1-0572
A.S.T.M. Card 2-3092
A.S.T.M. Card 28-775
K.S.L. 5209
K.S.L. 5207

[1] Robson TD, "High-Alumina Cements and Concretes," p. 232, John Wiley & Sons, Inc. (1962)

[2] Lea FM, The Chemistry of Cement and Concrete, 3rd, ed., Chemical Publishing Co. Inc., p. 490 (1970)

[3] 최형섭, "광석처리공학," 탑출판사, 1st ed. (1981)

[4] Han KS, Choi SU, Song TU, J. Korean Ceram. Soc., 16(3), 164 (1979)

[5] Park CO, J. Korean Ceram. Soc., 10(2), 74 (1973)

[6] Kim BH, Byun JD, J. Korean Ceram. Soc., 17(2), 96 (1980)

[7] Lee CT, Namgoong Y, Yoo YH, HWAHAK KONGHAK, 26(3), 295 (1988)

[8] Park YS, Lee CT, Yoo YH, HWAHAK KONGHAK, 24(4), 291 (1986)

[9] Park YS, Lee CT, Yoo YH, HWAHAK KONGHAK, 24(5), 399 (1986)

[10] 최한석, "무기공업화학," 동명사, 355 (1983)

[11] Faurholt C, J. Chem. Phys., 22, 1 (1925)

[12] Pinsent BRW, Pearson L, Roughton FJW, Trans. Faraday Soc., 52, 1594 (1956)

[13] 홍상의, 이철태, 유영홍, "생기연논문집," 고려대학교, 22 (1986)

[14] A.S.T.M. Card 10-173

[15] A.S.T.M. Card 23-1037

[16] A.S.T.M. Card 1-0572

[17] A.S.T.M. Card 2-3092

[18] A.S.T.M. Card 28-775

[19] K.S.L. 5209

[20] K.S.L. 5207