| 000 | nam k | |
| 001 | 2210080187181 | |
| 005 | 20140806133413 | |
| 007 | ta | |
| 008 | 870416s1993 bnka FB 000a kor | |
| 040 | ▼a221008 | |
| 041 | ▼akor▼beng | |
| 056 | ▼a559.6967▼24 | |
| 100 | ▼a신선명 | |
| 245 | 00 | ▼a충청도 지역일대 저품위 질석의 팽창특성에 관해서 /▼d申宣明 |
| 260 | ▼a부산:▼b東亞大學校 大學院,▼c1993 | |
| 300 | ▼a65 장:▼b삽도;▼c26 cm | |
| 502 | ▼a학위논문(석사)--▼b동아대학교 대학원:▼c자원공학과,▼d1993. 2 | |
| 520 | ▼b영문초록 : The propose of this thesis was to study the usage of the low-grade vermiculite from the Chung Chong province and also to increase its value-added. A series of experiments have been done for separation as well as heat-expansion characteristics of the Chung Chong vermiculite. some conclusions can be drawn as follows: 1. Vermiculites from Chung-Yang and Hong-Shung areas were better than that from Palabora' s mine in South Africa in terms of the usefulness for an organic fertilizer. 2. The proper pH was 1.5 in the floating-separation with Tallow Amine Acetate as Cation Collector. The ratio of withdrawal from vermiculite was higher 85 % and the average grade was 95%. 3. The ratio of the volume expansion of vermiculite increased along with the temperature. 4. Platinum and stainless crucibles were used for volume expansion experiments. Volume expansion was the highest in Platinum crucible and the lowest in alumina crucible. 5. Above 1050℃, the crystal structure began to change and resulted in partial destruction to produce some dusts. Finally sintering occurred. 6. Volume expansion ratio of the vermiculites from different regions can be arranged in decreasing order : Chung-Yang, Hong-Shung, Palabora, Shin-Jang. 7. Volume expansion of the vermiculite for Chung-Yang was the highest in the size fraction of 30mesh while the vermiculite from Hong-Shung showd the highest volume expansion in the 20mesh fraction. 8. In general. the ratio of volume expansion of the vermiculites from Chung-Yang. Hong-Shung and Palabora's mine in South Africa increased with temperature. But it decreased temporarily in the vicinity of 850℃. The result seems to be due to the temporary decrease in the latent heat as the crystal water in the crystals such as Ca(Mg·Fe)_(2)Al_(4)Si_(9)O_(34)(OH)_(4), K(Fe·Mg)_(3)AlSi_(3)O_(10)(OH)_(2) and K(Fe·Mg)_(3)AlSi_(3)O_(10)(OH)_(2) evaporated. | |
| 856 | ▼adonga.dcollection.net▼uhttp://donga.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002148839 | |
| 950 | ▼aFB | |
| 950 | ▼a비매품▼b￦3000▼c(추정가) |
충청도 지역일대 저품위 질석의 팽창특성에 관해서
종류
학위논문 동서
서명
충청도 지역일대 저품위 질석의 팽창특성에 관해서
저자명
발행사항
부산: 東亞大學校 大學院 1993
형태사항
65 장: 삽도; 26 cm
학위논문주기
학위논문(석사)-- 동아대학교 대학원: 자원공학과, 1993. 2
주기사항
영문초록 : The propose of this thesis was to study the usage of the low-grade vermiculite from the Chung Chong province and also to increase its value-added. A series of experiments have been done for separation as well as heat-expansion characteristics of the Chung Chong vermiculite. some conclusions can be drawn as follows: 1. Vermiculites from Chung-Yang and Hong-Shung areas were better than that from Palabora' s mine in South Africa in terms of the usefulness for an organic fertilizer. 2. The proper pH was 1.5 in the floating-separation with Tallow Amine Acetate as Cation Collector. The ratio of withdrawal from vermiculite was higher 85 % and the average grade was 95%. 3. The ratio of the volume expansion of vermiculite increased along with the temperature. 4. Platinum and stainless crucibles were used for volume expansion experiments. Volume expansion was the highest in Platinum crucible and the lowest in alumina crucible. 5. Above 1050℃, the crystal structure began to change and resulted in partial destruction to produce some dusts. Finally sintering occurred. 6. Volume expansion ratio of the vermiculites from different regions can be arranged in decreasing order : Chung-Yang, Hong-Shung, Palabora, Shin-Jang. 7. Volume expansion of the vermiculite for Chung-Yang was the highest in the size fraction of 30mesh while the vermiculite from Hong-Shung showd the highest volume expansion in the 20mesh fraction. 8. In general. the ratio of volume expansion of the vermiculites from Chung-Yang. Hong-Shung and Palabora's mine in South Africa increased with temperature. But it decreased temporarily in the vicinity of 850℃. The result seems to be due to the temporary decrease in the latent heat as the crystal water in the crystals such as Ca(Mg·Fe)_(2)Al_(4)Si_(9)O_(34)(OH)_(4), K(Fe·Mg)_(3)AlSi_(3)O_(10)(OH)_(2) and K(Fe·Mg)_(3)AlSi_(3)O_(10)(OH)_(2) evaporated.
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