1. Hiroyoshi, N., Kishimoto, N., Tsunekawa, M., Hirajima, T., Mishima, H., 2004. Recovery of metals from melting furnace fly ash by ammonia/chloride leaching. In: Proceedings of the 29th Spring Annual Meet of The Mining and Materials Processing Institute of Japan, pp. 31–32 (in Japanese).
2. Hujita, M., Tanaka, N., Matsuto, T., 2002. Recovery of zinc, lead and copper from melting furnace fly ash by means of acid leaching. In: Proceedings of the 13th Annual Conference of The Japan Society of Waste Management Experts, pp. 522–524 (in Japanese).
3. Inoue, S., Suzuki, Y., Hasizume, H., Hiraoka, M., Sakai, S., 1997. Recovery of heavy metals from fly ash by acid leaching. In: Proceedings of the Eighth Annual Conference of The Japan Society of Waste Management Experts, pp. 437–439 (in Japanese).
4. Inoue, S., Nagasawa, M., Sato, T., Hiraoka, M., Sakai, S., 1998. Resource recycling system of heavy metals from fly ash by acid leaching. In: Proceedings of the Ninth Annual Conference of The Japan Society of Waste Management Experts, pp. 462–464 (in Japanese).
5. Inoue, S., Nagasawa, M., Yamanaka, T., 1999. Resource recycling system of heavy metal from fly ash by means of sulfuric acid-sodium thiosulfate leaching. In: Proceedings of the 10th Annual Conference of The Japan Society of Waste Management Experts, pp. 539–541 (in Japanese).