KR890001484B1 - Preparation for calzium oxide - Google Patents
Preparation for calzium oxide Download PDFInfo
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- KR890001484B1 KR890001484B1 KR1019860001456A KR860001456A KR890001484B1 KR 890001484 B1 KR890001484 B1 KR 890001484B1 KR 1019860001456 A KR1019860001456 A KR 1019860001456A KR 860001456 A KR860001456 A KR 860001456A KR 890001484 B1 KR890001484 B1 KR 890001484B1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
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Abstract
Description
본 발명은 굴껍질과 같은 패각류를 소성하여 산화칼슘을 제조할때, 소성온도와 시간을 조절함으로써 필요한 수소이온농도를 갖는 산화칼슘을 제조하는 방법에 관한 것이다.The present invention relates to a method for producing calcium oxide having a required hydrogen ion concentration by controlling the firing temperature and time when calcining shells such as oyster shell to produce calcium oxide.
종래의 산화칼슘분말의 제조방법을 보면, 진공 감압하의 1200-1500℃온도에서 소성하는 방법(특허번호 제14682호, 공고번호 제83-811호)으로서, 문제점으로는 일단 설치된 패각류의 원료가 완성품이되기까지는 원료의 재설치가 불가능하여 연속 대량생산이 불가능하다는 점이 지적되었으며, 이를 개선한 발명(특허번호 제19482호, 공고번호 제85-346호)은 내열성 용기가 통할 수 있게 하여 원료의 재설치가 가능해졌었다.The conventional method for producing calcium oxide powder is a method of baking at 1200-1500 ° C. under vacuum reduced pressure (Patent No. 14682, Publication No. 83-811). It was pointed out that it is impossible to reinstall the raw material until it is a finished product, so that continuous mass production is impossible. The invention (patent no. 19482, publication no. 85-346) improved the heat-resistant container to allow the reinstallation of raw materials. Had become possible.
또한, 공개 특허공보(제83-8923호)에 의하면, 패각류를 건조시킨 후 1000-1500℃에서 약 2시간 정도 직접소성하고 분말로 만든 것을 급냉하여 포장시켜 산화칼슘분발을 제조함으로써, 동식물이 흡수하기 쉬운 상태로 이온화시킬 수 있도록 하고 있으나, 이는 직접 소성시키므로 요나 로 속의 먼지와 그을음이 패각분에 붙게되어 백색도가 좋지 못하고 식용등으로 사용할 수 없었다.In addition, according to Korean Patent Publication No. 83-8923, the shellfish were dried and then directly fired at 1000-1500 ° C. for about 2 hours, and then quenched and packaged into powder to prepare calcium oxide powder. It can be ionized in an easy-to-absorb state, but since it is directly fired, the dust and soot in the yona furnace are stuck to the shells, so the whiteness is not good and cannot be used for food.
상기의 제법들에 의해서는 한 가지의 수소이온농도만을 가진 산화칼슘을 얻게되어, 특정 수소이온농도를 가진 산화칼슘을 사용하는 것이 바람직한 경우에는 상기 제법들로는 원하는 수소이온농도로 조절해서 얻을 수 없는 단점이 있었다. 따라서 본 발명은 패각류를 내열성 용기에 넣어 금고형 요 또는 로 속에서 간접소성시키되 원하는 수소이온농도를 가지는 산화칼슘을 생성하는데 적합한 본소온도까지 예열시킨 후, 그 본소 온도를 약 5분 내지 10분 유지시켜줌으로써 최종 생성된 산화칼슘이 백색도가 뛰어나고 위생적이며 다양한 수소이온농도를 갖도록 조절하는 방법을 제공하는 것을 목적으로 하는 것이다.According to the above methods, calcium oxide having only one hydrogen ion concentration is obtained, and when it is desirable to use calcium oxide having a specific hydrogen ion concentration, the above-mentioned methods cannot be obtained by adjusting to the desired hydrogen ion concentration. There was this. Therefore, the present invention is indirectly fired in a shell-resistant urine or furnace in a shell-resistant container, preheated to the main temperature suitable for producing calcium oxide having a desired hydrogen ion concentration, and then maintained the main temperature for about 5 to 10 minutes It is an object of the present invention to provide a method of controlling the resulting calcium oxide to have excellent whiteness, hygiene and various hydrogen ion concentrations.
본 발명을 상세히 설명하면 다음과 같다.The present invention is described in detail as follows.
굴껍질과 같은 패각류를 수세하여 모래와 같은 부착오물을 제거한 다음 천연 또는 인공으로 건조하고 두껍고 큰 것을 가볍게 파쇄한 후 내열성 용기에 넣고 활성탄을 패각에 대해 0.2 중량% 살포한 후 고주파요 또는 고주파로, 마그네트론, 석유로 또는 석유요, 경유로, 방카 A유요 또는 방카 A유로, 방카 C유요 또는 방카 C유로, 깨스요 또는 깨스로 등 내에 넣고 그 요 또는 로의 문을 담아 밀폐시킨 다음 서서히 열을 올려 500℃내지 1600℃사이의 본소(本燒) 온도까지 예열시켜, 본소온도에서 약 5분 내지 10분간 유지하여 간접소성한 다음, 열원공급을 중단하고 요 또는 로의 문을 열고 내열성 용기의 뚜껑을 열어 가급적 급냉시킨 후 분쇄에 적합한 정도로 방냉된 내용물을 분쇄하여 미세한 분말로 만들어 대기와 차단한 다음 보관한다. 이 때, 예열을 포함한 열원 공급시간은 모두 약 30분 내지 7시간 30분 정도 소요된다.Wash off shells such as oyster shells to remove adherents such as sand, dry them naturally or artificially, lightly crush thick and large ones, put them in a heat-resistant container and spray 0.2% by weight of activated carbon against shells. , Magnetron, petroleum or oil, gasoline, banca A, or banca, A, banca, C, or banca, into a sesame or sesame, etc. Preheat to the main temperature between 500 ° C and 1600 ° C, hold for 5 to 10 minutes at the main temperature, indirect firing, stop the heat source supply, open the door of the urine or furnace, and open the lid of the heat resistant container. After quenching as much as possible, the contents cooled to a degree suitable for grinding are pulverized into fine powders, cut off from the atmosphere, and stored. At this time, the heat source supply time including preheating takes about 30 minutes to 7 hours 30 minutes.
본 발명에서 진공장치가 필요치 않은 것은 요 또는 로 내에 패각류의 원료를 직접 적재하지 않고 일단 내열성 용기내에 넣어 금고형 요 또는 로 내에 설치하여 가열하는 간접소성방식에 기인하는 것이며, 내열성 용기의 두껑을 닫는 것은 오며의 방지뿐 아니라 가열에 의해 팽창하는 패각류에 섞여 있을지 모르는 중금속이나 기타 토류 금속류 및 분해가스를 소성 뒤 뚜껑을 열어 순간적으로 휘산시켜 주기 위함이다. 상기와 같은 방법으로 얻어지는 물성은 선특허 물성과 같으나 한국과학기술연구소의 정성분석은 다음과 같은 것이었다.The need for a vacuum device in the present invention is due to an indirect firing method in which a shell material is not directly loaded into a yaw or furnace, but is placed in a heat resistant container and installed in a safe type yaw or furnace and heated. This is not only to prevent overdrafting but also to instantly vaporize heavy metals or other earth metals and cracked gases that may be mixed in shells that expand by heating, after firing. The physical properties obtained by the above method were the same as the prior patent properties, but the qualitative analysis of the Korea Institute of Science and Technology was as follows.
[표 1]TABLE 1
또한, 상기한 본 발명에 의거 제조되는 생성물은 쥐에 투여하더라도 독성이 LD 50으로 체중Kg당 비교 1/10 투여하였음에도 아무런 특성이 없었음을 확인할 수 있었다.In addition, the product prepared according to the present invention was confirmed that there was no characteristic even when administered to rats, even if the toxicity was administered by 1/10 compared to the weight per kilogram of LD 50.
한편, 본 발명에 의한 산화칼슘 용액의 수소이온농도는 pH 10-13의 강알카리를 띠면서도 피부에 닿더라도 아무런 이상이 없었음은 가성소오다와 같이 피부에 닿게 되면 화상을 입게되는 것과는 완전히 상이한 것이 본발명 생성물의 특성중의 하나이다.On the other hand, the hydrogen ion concentration of the calcium oxide solution according to the present invention had a strong alkali of pH 10-13, but there was no abnormality even if it touched the skin. Is one of the properties of the present invention.
본 발명에 의해 다양한 수소이온농도를 갖도록 조절하여 얻은 산화칼슘분말은 수소이온농도에 따라 여러가지 용도로 쓰일 수 있으며, 몇가지 예를 들어보면, pH 7.5는 산성토양교정제, pH 8.5는 고무, 플라스틱 첨가물, pH 9.5는 식품첨가물, pH 11.5는 중성제지 ㅈ제조제, pH 12.5는 주로 첨가제, pH 12.9는 농축산물 악취제거제, pH 13.1은 상수도 수질조절제 등이 있다.Calcium oxide powder obtained by adjusting to have a variety of hydrogen ion concentration according to the present invention can be used for various purposes according to the hydrogen ion concentration, for example, pH 7.5 is an acidic soil straightener, pH 8.5 is a rubber, plastic additives For example, pH 9.5 includes food additives, pH 11.5 is a neutral paper manufacturing agent, pH 12.5 is mainly additives, pH 12.9 is a concentrated product odor remover, and pH 13.1 is a water quality regulator.
이하 본 발명을 실시예를 들어 구체적으로 설명한다.Hereinafter, the present invention will be described in detail with reference to Examples.
[실시예 1]Example 1
굴껍질과 같은 패각류를 수세하여 이물질 제거한 후 천연 또는 인공으로 건조하고 두껍고 큰 것을 가볍게 파쇄한 후 내열성 용기에 넣고 활성탄을 패각에 대해 0.2중량% 살포한 뒤 뚜껑을 덮고 그 다음 금고형의 전기요 또는 전기로, 고주파요 또는 고주파로, 마그네트론, 석유요 또는 석유로, 경유요 또는 경유로, 방카 A유요 또는 방카 A유로, 방카 C유요 또는 방카 C유로, 깨스요 또는 깨스로 등 내에 넣고 그 요 또는 로의 문을 닫아 밀폐시킨 다음 서서히 열을 올려 예열시킨 후 500-600℃사이의 본소온도에서 5분간 소성한 다음 열원공급을 중단하고 요 또는 로의 문을 열고 내열성 용기의 뚜껑을 열어 가급적 급냉시킨 후 분쇄에 적당한 온도로 방냉된 내용물을 분쇄기로 250메쉬 정도 미세하게 파쇄하면 본 발명 산화칼슘을 얻게 되고 이와같이 얻어진 생성물을 밀폐된 용기에 보관한다. 단, 생성물은 0.1%로 한 수용액(21℃액온에서)의 수소이온 농도는 pH 7.5이었다.The shells, such as oyster shells, are washed with water to remove foreign substances, dried naturally or artificially, and lightly crushed to thick and large ones. Furnace, high frequency or high frequency furnace, magnetron, petroleum or petroleum, diesel or diesel, banca A yo or banca A, banca C or yoka C, kasyo or seslow, etc. Close the door and seal it, then slowly heat it up to preheat it, calcinate it for 5 minutes at the main temperature between 500-600 ℃, stop the heat source supply, open the door of the urine or furnace, open the lid of the heat-resistant container and quench it as much as possible. Finely crushing the contents cooled to a suitable temperature by about 250 mesh to obtain the calcium oxide of the present invention and thus produced To be stored in a closed container. However, the hydrogen ion concentration of the aqueous solution (at 21 degreeC liquid temperature) which made the product 0.1% was pH 7.5.
[실시예 2]Example 2
실시예 1과 같은 조건하에 온도 600-700℃사이에서 6분간 소성하여 물성이 동일한 본 발명 생성물을 얻었다. 단 생성물의 0.1% 수용액(21℃액은)의 수소이온 농도는 pH 8.7이었다.Under the same conditions as in Example 1, baking was carried out at a temperature of 600 to 700 ° C. for 6 minutes to obtain a product of the present invention having the same physical properties. However, the hydrogen ion concentration of the 0.1% aqueous solution (21 degreeC solution silver) of the product was pH 8.7.
[실시예 3]Example 3
실시예1과 같은 조건하에 온도 700-800℃사이에서 6분간 소성하여 물성이 동일한 본 발명 생성물을 얻었다. 단 생성물의 0.1% 수용액(21℃액은)의 수소이온 농도는 pH 11.4이었다.Under the same conditions as in Example 1, the product was fired for 6 minutes at a temperature of 700 to 800 ° C. to obtain a product of the present invention having the same physical properties. However, the hydrogen ion concentration of the 0.1% aqueous solution (21 degreeC silver solution) of the product was pH 11.4.
[실시예 4]Example 4
실시예1과 같은 조건하에 온도 800-900℃사이에서 7분간 소성하여 물성이 동일한 본 발명 생성물을 얻었다. 단 생성물의 0.1% 수용액(21℃액은)의 수소이온 농도는 pH 12.1이었다.Under the same conditions as in Example 1, baking was carried out at a temperature of 800 to 900 ° C. for 7 minutes to obtain a product of the present invention having the same physical properties. The hydrogen ion concentration of the 0.1% aqueous solution (21 ° C solution silver) of the product was pH 12.1.
[실시예 5]Example 5
실시예1과 같은 조건하에 온도 900-1,200℃사이에서 7분간 소성하여 물성이 동일한 본 발명 생성물을 얻었다. 단 생성물의 0.1% 수용액(21℃액은)의 수소이온 농도는 pH 12.7이었다.Under the same conditions as in Example 1, the product was fired at a temperature of 900-1,200 ° C for 7 minutes to obtain a product of the present invention having the same physical properties. However, the hydrogen ion concentration of the 0.1% aqueous solution (21 degreeC solution silver) of the product was pH 12.7.
[실시예 6]Example 6
실시예1과 같은 조건하에 온도 1,200-1,600℃사이에서 6분간 소성하여 물성이 동일한 본 발명 생성물을 얻었다. 단 생성물의 0.1% 수용액(21℃액은)의 수소이온 농도는 pH 13이었다.Under the same conditions as in Example 1, the product was fired at a temperature of 1,200-1,600 ° C for 6 minutes to obtain a product of the present invention having the same physical properties. However, the hydrogen ion concentration of the 0.1% aqueous solution (21 degreeC silver solution) of the product was pH 13.
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KR1019860001456A KR890001484B1 (en) | 1986-03-03 | 1986-03-03 | Preparation for calzium oxide |
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