KR100406748B1 - Desiccant by using the natural mineral and the calcium chloride (or magnesium chloride) and its manufacturing process - Google Patents
Desiccant by using the natural mineral and the calcium chloride (or magnesium chloride) and its manufacturing process Download PDFInfo
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- KR100406748B1 KR100406748B1 KR10-2001-0043052A KR20010043052A KR100406748B1 KR 100406748 B1 KR100406748 B1 KR 100406748B1 KR 20010043052 A KR20010043052 A KR 20010043052A KR 100406748 B1 KR100406748 B1 KR 100406748B1
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- magnesium chloride
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- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 title claims abstract description 27
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 title claims abstract description 17
- 239000001110 calcium chloride Substances 0.000 title claims abstract description 16
- 229910001628 calcium chloride Inorganic materials 0.000 title claims abstract description 16
- 229910001629 magnesium chloride Inorganic materials 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 title description 2
- 239000011707 mineral Substances 0.000 title description 2
- 239000002274 desiccant Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 239000002250 absorbent Substances 0.000 claims abstract description 12
- 230000002745 absorbent Effects 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000010455 vermiculite Substances 0.000 claims abstract description 11
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 11
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 11
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 9
- 239000003230 hygroscopic agent Substances 0.000 claims abstract description 9
- 239000004571 lime Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims abstract description 7
- 239000010459 dolomite Substances 0.000 claims abstract description 6
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 6
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 6
- 239000010440 gypsum Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000005923 long-lasting effect Effects 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3007—Moulding, shaping or extruding
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Drying Of Gases (AREA)
Abstract
본 발명은 천연광석과 염화칼슘(또는 염화마그네슘)을 이용한 흡습제 및 그 제조방법에 관한 것으로서, 특히 흡습성능이 우수하면서 장기간 지속되게 하고, 또한 과다 흡습시에도 물이 발생하지 않게할 뿐아니라 폐기시 환경오염을 유발치않는 양질의 흡습제를 제공하고자 하는 것이다.The present invention relates to a hygroscopic agent using natural ores and calcium chloride (or magnesium chloride) and a method of manufacturing the same, in particular, excellent hygroscopic performance and long-lasting, and also does not generate water during excessive hygroscopic, as well as environmental disposal It is to provide a good quality absorbent which does not cause contamination.
상기 목적을 달성하기 위하여 본 발명은 질석과 염화칼슘(또는 염화마그네슘)을 물분무와 함께 혼합하여 혼합물을 얻고, 상기 혼합물을 성형화기계(정환기)에 투입, 회전시키면서 벤토나이트와 석회(또는 백운석, 석고) 및 시멘트 혼합물을 살포하면서 적량의 물을 분무하여 환형의 성형물을 얻고, 상기 성형물을 건조기에 투입 건조하고, 선별하여 본 발명에서 제공하고자 하는 흡습제를 얻을 수 있게 한 것이다.In order to achieve the above object of the present invention, vermiculite and calcium chloride (or magnesium chloride) are mixed with water spray to obtain a mixture, and the mixture is put into a molding machine (purifier) and rotated while bentonite and lime (or dolomite, gypsum) And spraying a suitable amount of water while spraying the cement mixture to obtain an annular molding, and the molding is put into a drier and dried to obtain a hygroscopic agent to be provided by the present invention.
Description
본 발명은 석회나 백운석, 석고, 질석 및 벤토나이트와 같은 천연광석과 염화칼슘 또는 염화마그네슘을 이용한 흡습제 및 그 제조방법에 관한 것으로서, 특히 흡습성이 우수하면서 제조경비가 저렴하고, 또한 과다흡습시에도 과다 흡습으로 인한 물이 발생하는 현상 및 환경오염이 없는 양질의 흡습제를 제공하고자 하는 것이다.The present invention relates to a hygroscopic agent using natural ore, such as lime, dolomite, gypsum, vermiculite and bentonite, calcium chloride or magnesium chloride, and a method for manufacturing the same, in particular, having excellent hygroscopicity, low manufacturing cost, and excessive hygroscopicity even when over-hygroscopic. The purpose of the present invention is to provide a high quality absorbent without the phenomenon of water and environmental pollution.
일반적으로 흡습제는 산업전분야에 걸쳐 제품의 포장시 습기로부터 제품을 보호하기 위하여 널리 사용되고 있으며, 여러종류의 흡습제가 사용되고 있다.In general, a moisture absorbent is widely used to protect the product from moisture during packaging of the product throughout the industry, and various types of moisture absorbents are used.
대표적으로 사용되고 있는 몇가지 흡습제의 예를 들면, 실리카겔의 경우 규산나트륨을 강산으로 분해시켜 제조하는 것이므로 제조경비가 고가이고, 사용이 끝난 후 폐기시 부폐하지 않고, 잔류하면서 토질을 산성화시키게 되므로 심각한 환경오염을 야기시키게 된다.Some of the hygroscopic agents that are typically used, for example, silica gel are produced by decomposing sodium silicate with a strong acid, which is expensive to manufacture, and does not decompose when disposed of after use. Will cause.
또한 순수염화칼슘만을 이용한 제품은 사용시 수분을 흡수하게 되면 누액이발생하게 되고, 상기 누액은 포장제품에 치명적인 문제를 야기시킬 수 있게 되므로 사용 제품이 제한적일뿐 아니라 상당한 주의를 필요로 하게 된다.In addition, a product using pure calcium chloride absorbs moisture during use, and leakage occurs, and the leakage may cause a fatal problem in the packaged product.
천연규조토나 제올라이트를 염화칼슘에 함침시켜 제조한 것은 흡습성, 경제성이 우수하나 흡습을 많이 했을 때(60% 이상)물기가 포장지 밖으로 새어나오는 경우가 있어 정밀제품이나 식.의약품에는 적합치 못한 것이었다.Manufactured by impregnating natural diatomaceous earth or zeolite with calcium chloride is excellent in hygroscopicity and economical efficiency, but when moisture is absorbed a lot (more than 60%), water may leak out of the packaging, which is not suitable for precision products or food and medicine.
따라서 최근에 사용되고 있는 흡습제의 추세는 흡습성능은 다소 떨어지나(약30%) 화학약품을 사용하지 않은 천연광물질만을 이용한 제품을 개발사용하고 있으나, 상기한 제품은 흡습성이 너무 저조한 등의 단점이 있는 것이었다.Therefore, the trend of the recently used hygroscopic agent is that the hygroscopic performance is somewhat reduced (about 30%), but the product is developed and used using only natural minerals without using chemicals, but the above-mentioned products have disadvantages such as too low hygroscopicity. .
본 발명은 이러한 종래의 제반 단점을 시정하고자 흡습성이 우수하면서도 제조경비가 저렴하고 또한 흡습성이 장기간 지속될 뿐아니라 사용중 흡습에 의한 물기 발생이 없고, 폐기시에는 환경오염이 없는 양질의 흡습제를 제공하고자 하는 것이다.The present invention is to provide a good hygroscopic agent that is excellent in hygroscopicity, low manufacturing cost and long-term hygroscopicity, and no moisture caused by moisture absorption during use, and no environmental pollution when disposed to correct the above disadvantages. will be.
상기 목적을 달성하기 위하여 본 발명은 먼저 질석과 염화칼슘을 적절한 비율로 혼합하고, 상기 혼합물을 정환기에 투입한 다음 분무장치를 통하여 적정량의 물을 분무하고, 동시에 벤토나이트를 살포하면서 회전시켜 환을 만든다.In order to achieve the above object, the present invention first mixes vermiculite and calcium chloride in an appropriate ratio, and the mixture is put into a recirculating machine, and then sprayed with an appropriate amount of water through a spraying device, and at the same time rotating while spraying bentonite to make a ring.
일정크기의 환이 만들어지면 석회가 시멘트가 혼합된 분말을 정환기에 살포하여 환의 경도를 강화시킨 후 가열건조, 선별, 냉각하여 흡습제를 제조하는 것이다.When a ring of a certain size is made, lime is sprayed with a powder mixed with cement to the purifier to enhance the hardness of the ring, and then heat-dried, sorted, and cooled to manufacture an absorbent.
이때 원료중 벤토나이트는 점성이 있는 특질을 이용한 성형(구형화)의 목적으로 사용되며 질석은 비중이 낮은 점을 이용한 보습제의 목적으로 사용된다.At this time, bentonite is used for molding (spherization) using viscous properties and vermiculite is used for moisturizing agents with low specific gravity.
본 발명의 흡습제를 성형함에 있어서, 환형 즉 구형으로 구성하는 것은 흡습제의 포장지가 거의 내부에 얇은 필름종류로 되어 있어, 사용중 얇은 필름막이 손상되지 않게 하기 위한 것이다.In forming the moisture absorbent of the present invention, the annular, or spherical, shape is intended to prevent the thin film film from being damaged during use, since the package of the moisture absorbent is almost a thin film.
이하 본 발명의 실시예를 공정별로 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail by process.
제1공정 : 원료혼합공정First step: raw material mixing process
입경이 1∼3mm정도인 질석(Vermiculite)과 염화칼슘(CaCl2) 또는 염화마그네슘(MgCl2)을 3∼4 : 6∼7의 중량비로 혼합한다.Vermiculite having a particle diameter of about 1 to 3 mm and calcium chloride (CaCl 2 ) or magnesium chloride (MgCl 2 ) are mixed in a weight ratio of 3 to 4: 6-7.
이때 질석과 염화칼슘, 혹은 염화마그네슘의 혼합비율은 사용하고자 하는 포장제품의 흡습율에 따라 임의 조정된다.At this time, the mixing ratio of vermiculite and calcium chloride or magnesium chloride is arbitrarily adjusted according to the moisture absorption rate of the package product to be used.
즉 흡습율을 최악의 조건인 50℃, 상대습도90% 이상에서 120시간 이상 방치했을 때 90% 이상의 흡습율을 목표로 하는 제품일 경우에는 염화칼슘, 혹은 염화마그네슘을 질석 혼입량 3 에 대하여 7 정도로의 중량비로 혼입하고, 그 이하 수준을 목표로 할 경우에는 염화칼슘 또는 염화마그네슘의 량을 점차적으로 줄여 사용한다.In other words, if the product has a moisture absorption rate of 90% or more when the moisture absorption rate is left at a temperature of 50 ° C. and a relative humidity of 90% or more for 120 hours or more, calcium chloride or magnesium chloride is about 7 to the amount of vermiculite 3 If it is mixed by weight ratio and aims at a lower level, gradually reduce the amount of calcium chloride or magnesium chloride.
상기 혼합공정에서 분무기를 이용하여 표면이 젖을 정도로 분무한다.In the mixing process, the sprayer is sprayed to a degree that the surface is wet.
제2공정 : 성형공정2nd process: molding process
제1공정에서 얻어진 혼합원료를 성형화기계(정환기)(pelletiger)에 투입하여회전시키면서 분무장치를 통하여 물을 분무하게 되며, 이때 분무하는 물의 량은 혼합원료가 약간 젖을 정도로 분무한다.The mixed raw material obtained in the first step is injected into a forming machine (pelletiger) and rotated to spray water through the spraying device, and the amount of water to be sprayed is sprayed so that the mixed raw material is slightly wet.
상기한 상태로 약 5∼10분정도 회전시킨 후 다시 성형화기계내에 벤토나이트를 살포하면서 동시에 소량씩 물을 분무하여 성형화한다.After rotating for about 5 to 10 minutes in the above state, the bentonite is sprayed again in the molding machine and sprayed in small portions at the same time to be molded.
이때 살포되는 벤토나이트의 량은 특별히 한정되지 아니하여 상태에 따라 적절히 저정하여 살포한다.At this time, the amount of bentonite to be sprayed is not particularly limited and is suitably stored and sprayed according to the condition.
성형화기계를 약 30∼40분 정도 회전시켜 1차 성형이 이루어지면 석회(또는 백운석, 석고)와 시멘트를 1:1∼3:1의 중량비로 혼합된 혼합분말을 성형화기계에 살포하고, 동시에 물을 계속하여 분무하면서 성형화기계를 계속 회전시킨다.When the molding machine is rotated for about 30 to 40 minutes and the primary molding is performed, the mixed powder mixed with lime (or dolomite and gypsum) and cement in a weight ratio of 1: 1 to 3: 1 is sprayed onto the molding machine, At the same time, the molding machine is continuously rotated while continuing to spray water.
상기에서 석회와 시멘트의 사용목적은 성형을 촉진함과 동시에 성형체 즉 환의 경도를 강하게 하고, 또한 흡습제가 흡습을 하였을 경우 물기가 생기지 않게 함과 동시에 고형화하기 위한 것이다.The purpose of the use of lime and cement is to promote molding and to strengthen the hardness of the molded body, ie, the ring, and to prevent the formation of moisture when the absorbent absorbs moisture and to solidify the same.
본 공정을 통하여 혼합재료들이 입경 1∼4mm정도 여러크기의 환형상으로 성형되고, 상기 성형공정에서 분무되는 물의 량은 혼합재로 1kg에 0.1ℓ정도이면 된다.Through this process, the mixed materials are molded into various sizes of about 1 to 4 mm in particle size, and the amount of water sprayed in the forming process may be about 0.1 L per 1 kg as the mixed material.
제3공정 : 건조. 선별공정Third step: drying. Screening Process
제2공정에서 환형으로 성형완료된 성형물을 건조로에 투입한 후 300∼400℃에서 약1∼2시간 정도 처리하여 성형물이 충분히 건조되게 한다.In the second step, the molded article formed into an annular shape is introduced into a drying furnace, and then treated at about 300 to 400 ° C. for about 1 to 2 hours so that the molded product is sufficiently dried.
건조완료된 환형성형물은 선별기 즉, 진동체를 이용하여 선별하여, 진동체 상부에 잔류하는 굵은 성형물(규격이상)은 별도 수거하여 재처리하고, 진동체를 통과한 성형물은 밀폐용기에 투입, 자연냉각 후 포장하므로서 본 발명에서 제공하고자 하는 흡습제의 제조가 완료된다.The dried ring-shaped product is sorted using a separator, that is, a vibrating body, and the thick moldings (above the standard) remaining on the vibrating body are separately collected and reprocessed, and the moldings passing through the vibrating body are put in a closed container and naturally cooled. After packaging, the preparation of the absorbent to be provided in the present invention is completed.
상기 건조공정에서 환형의 성형물을 300℃이상의 고온으로 건조하는 것은 성형물내에 함유한 수분이 300℃이하에서는 충분한 건조(함수율0.5%이하)가 이루어지지 못하기 때문이다.In the drying step, the annular molded product is dried at a high temperature of 300 ° C. or higher because a sufficient drying (water content of 0.5% or less) is not achieved when the moisture contained in the molded product is 300 ° C. or lower.
이상과 같은 공정으로 제조된 본 발명은 흡습제는 흡습성능을 우수하게 하기 위하여 염화칼슘 혹은 염화마그네슘을 사용하되, 사용시 흡습된 수분이 액화되어 물이 생기는 현상을 방지하기 위하여 질석, 석회, 시멘트를 적절히 배하바므로서 충분한 흡습후에도 흡습제 표면에 물기가 없는 상태를 유지하게 된다.In the present invention manufactured by the above process, the hygroscopic agent uses calcium chloride or magnesium chloride to improve hygroscopic performance, but in order to prevent the phenomenon that water is generated by liquefying moisture absorbed during use, vermiculite, lime and cement are properly disposed. Therefore, even after sufficient moisture absorption, the surface of the moisture absorbent remains dry.
상기 본 발명의 흡습제를 제조함에 있어서, 사용용도에 따라서 염화칼슘이나 염화마그네슘의 혼입비율을 적절히 조정하여 용도에 맞게 제조사용할 수 있으며, 특히 사용중 과다흡습으로 인한 물이 발생하지 않기 때문에 정밀제품이나 식.의약품등 산업전분야에 걸쳐 광범위하게 사용할 수 있게 된다.In preparing the moisture absorbent of the present invention, the mixing ratio of calcium chloride or magnesium chloride can be properly adjusted according to the intended use according to the intended use, and can be manufactured and used according to the use, in particular, since water does not occur due to excessive moisture absorption during use. It can be widely used in all industries such as medicine.
따라서 본 발명은 흡습제를 제조함에 있어서, 질석과 석회(또는 백운석, 석고) 벤토나이트, 염화칼슘(또는 염화마그네슘)을 적절히 혼합하고, 성형화기계내에서 적량의 물을 분사하면서 환형 성형물을 얻고, 상기 성형물을 300∼400℃로 건조한 다음 진동체를 이용하여 선별제조케 하므로서, 흡습성능이 우수하면서 장기간 지속되고, 또한 과다수분을 흡수하더라도 물이 발생하거나 스며나오지 않게 되므로 정밀제품이나 식.의약품 등 산업전분야에 걸쳐 사용이 가능하며, 폐기시에도 환경을 오염시키지 않는 등의 효과가 있는 것이다.Therefore, in the present invention, in preparing a hygroscopic agent, vermiculite and lime (or dolomite, gypsum) bentonite and calcium chloride (or magnesium chloride) are appropriately mixed, and an appropriate amount of water is sprayed in a molding machine to obtain an annular molded product. It is dried at 300 ~ 400 ℃ and then manufactured using a vibrating body, so it is excellent in hygroscopic performance and lasts for a long time, and water is not generated or seeps out even when absorbing excess moisture. It can be used over and does not pollute the environment during disposal.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144021A (en) * | 1981-03-04 | 1982-09-06 | Shin Nisso Kako Co Ltd | Desiccating agent for high humidity |
| JPS58219919A (en) * | 1982-06-15 | 1983-12-21 | Shin Nisso Kako Co Ltd | Drying composition and package |
| JPS61216715A (en) * | 1985-03-19 | 1986-09-26 | Shin Nisso Kako Co Ltd | Drying composition and package |
| JPS62117614A (en) * | 1985-11-16 | 1987-05-29 | Tokuyama Soda Co Ltd | Drying agent |
| KR930017612A (en) * | 1992-02-10 | 1993-09-20 | 이무섭 | Manufacturing method of absorbent using natural diatomaceous earth and vermiculite and absorbent thereof |
| KR960006996A (en) * | 1994-08-24 | 1996-03-22 | 서승혁 | Manufacturing method of absorbent using natural vermiculite |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144021A (en) * | 1981-03-04 | 1982-09-06 | Shin Nisso Kako Co Ltd | Desiccating agent for high humidity |
| JPS58219919A (en) * | 1982-06-15 | 1983-12-21 | Shin Nisso Kako Co Ltd | Drying composition and package |
| JPS61216715A (en) * | 1985-03-19 | 1986-09-26 | Shin Nisso Kako Co Ltd | Drying composition and package |
| JPS62117614A (en) * | 1985-11-16 | 1987-05-29 | Tokuyama Soda Co Ltd | Drying agent |
| KR930017612A (en) * | 1992-02-10 | 1993-09-20 | 이무섭 | Manufacturing method of absorbent using natural diatomaceous earth and vermiculite and absorbent thereof |
| KR960006996A (en) * | 1994-08-24 | 1996-03-22 | 서승혁 | Manufacturing method of absorbent using natural vermiculite |
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