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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.10, no.2, 2001³â, pp.88-94
¼®ÅºÈ¸¼ºÇü¹èÁö(Ash Ball)ÀÇ ÀÌÈ­ÇÐÀû Ư¼º°ú ¿°·ùÁýÀû ¹× Á¦°ÅÈ¿°ú
( Physical and Chemical Properties of Coal Fly Ash Ball Substrates, the Salt Accumulation and the Effects of Washing Out Salt with Water )
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Ash ball ¹èÁöÀÇ ÀÌÈ­ÇÐÀûƯ¼º°ú »ç¿ë¹èÁöÀÇ ¿°·ùÁýÀû ¹× Á¦°ÅÈ¿°ú¸¦ ÆÞ¶óÀÌÆ® ¹× ÀÔ»ó¾Ï¸é°ú ºñ±³ÇÏ¿´´Ù. ash ballÀÇ °¡ºñÁß, ÁøºñÁß, °ø±ØÀ²Àº °¢°¢ 0.93 g.$cm^{-3}$, 2.29 g.$cm^{-3}$, 40.6%, 59.4%·Î¼­ ±×Áß °¡ºñÁßÀº ÆÞ¶óÀÌÆ® ¹× ÀÔ»ó¾Ï¸é¿¡ ºñÇØ ÇöÀúÈ÷ ³ô¾Ò°í °¡°øÀ²Àº ³·¾Ò´Ù. ¹èÁöÀÇ Æ÷È­¼öºÐÇÔ·®(saturation moisture capacity)Àº ash ballÀÌ 52%, ÆÞ¶óÀÌÆ®°¡ 71%, ÀÔ»ó¾Ï¸éÀÌ 90%·Î ³ªÅ¸³µ°í, ¹è¼ö 1½Ã°£ ÈÄ ¼öºÐÀ²Àº ahs ballÀ̰¡ 21%, ÆÞ¶óÀÌÆ®°¡ 27%, ÀÔ»ó¾Ï¸éÀÌ 80%·Î ³·¾ÆÁ³´Ù. Ash ballÀÇ ÀÔµµº° ¼öºÐÀ²Àº ¼Ò¸³(3~5 mm)ÀÌ ´ë¸³ (7~15mm)¿¡ ºñÇØ 5% Á¤µµ ³ô¾Ò´Ù. Ash ballÀÇ ¹èµå³» ¼öºÐÀ²Àº ¼öÁ÷ ¹× ¼öÆò¹æÇâÀÇ ºÐÆ÷°¡ ±ÕÀÏÇÏ¿© ¼öºÐÈ®»ê¼ºÀÌ ÁÁÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ash ballÀÇ pH´Â 7.6À¸·Î ¾à¿°±â¼ºÀ» ³ªÅ¸³»¾ú´Ù. ¹èÁö¸¦ ħÁöÇÑ ¹è¾ç¾×ÀÇ pH´Â 7.6À¸·Î ¾à¿°±â¼ºÀ» ³ªÅ¸³»¾ú´Ù. ¹èÁö¸¦ ħÁöÇÑ ¹è¾ç¾×ÀÇ pH´Â ´Ù¼Ò Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç EC´Â °ÅÀÇ º¯È£°¡ ¾ø¾úÀ¸¸ç, ¹èÁö³» ¹«±âÀÌ¿ÂÀÇ ÈíÂøÀº ash ball°ú ÀÔ»ó¾Ï¸éÀº ÀλêÀÇ ÈíÂøÀÌ ºñ±³Àû ¸¹¾Ò´Ù. Å丶Åä Àç¹è¿¡ »ç¿ëµÈ ash ballÀÇ ¿°·ùÁýÀûÀº ÆÞ¶óÀÌÆ®¿Í ºñ½ÁÇÏ¿´°í 8ȸ Á¤µµÀÇ Ä§¼ö󸮷Π¹èÁöÇ¥¸é¿¡ ÈíÂøµÈ ¹«±â¿°À» ´ëºÎºÐ Á¦°ÅÇÒ ¼ö ÀÖ¾ú´Ù. À§ÀÇ °á°ú·ÎºÎÅÍ, ash ball ¹èÁö´Â º¸¼ö·ÂÀº ´Ù¼Ò ³·Áö¸¸ Åë±â¼º ¹× ¼öºÐÈ®»ê¼ºÀÌ ¿ì¼öÇÏ¿© ¹èÁö³»ÀÇ ¼öºÐÁ¶ÀýÀÌ ¿ëÀÌÇÑ ¹èÁöÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
Physical and chemical properties, the salt accumulation and leaching of salt by water of coal fly ash ball (ash ball) were evaluated in comparison with perlite and granule rockwool (rockwool). Bulk density, particle density, solid phase, and porosity of ash ball were 0.93 g.cm$^{-3}$ , 2.29 g.cm$^{-3}$ , 40.6%, 59.4%, respectively. The bulk density of ash ball was greater, while porosity was smaller, than that of perlite and rockwool. Saturation moisture capacity was 52% in ash ball, 71% in perlite, and 90% in rockwool. Water contents after drainage for 1 hr of ash ball, perlite, and rockwool were 21%, 27%, and 80%, respectively. Water content of small granules (3-5 mm) of ash ball was 5% greater than that of large (7-15 mm) grannules. The ash ball was a weak alkali substrate with pH 7.6, but not electric conductivity (EC), of the nutrient solution supplied to ash ball slightly increased. When the absorption of mineral ions to substrates were analyzed, ash ball and RW absorbed mainly PO£þ$_4$. On tomato culture, salt accumulation in ash ball substrate was similar to that in perlite. Most of the salts in the ash balls were removed by submerging the substrate eight times in distilled water. It is concluded that water holding capacity of ash ball substrate was lo as compared to other substrates, but air permeability, and water diffusion was excellent, making control of medium water content easy.
 
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°¡ºñÁß;¼öºÐÇÔ·®;Åë±â¼º;¼öºÐÈ®»ê¼º;¹«±â¼ººÐ;bulk density;moisture content;air permeability;water diffusion mineral content;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.10, no.2, 2001³â, pp.88-94
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920848301)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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