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公开(公告)号：KR1019900002091B1
公开(公告)日：1990-04-02
申请号：KR1019870002965
申请日：1987-03-30
Applicant: 한국화학연구원
IPC: B01D39/16
Abstract: A method for treating a filter of an anti-dust mask comprises (a) mixing 1-30wt.% stylenes resin with cumarone-indene resin (or petroleum resin or alkyl phenol resin) and dissolving in an org. solvent i.e. methylene chloride, benzene, toluene, (b) impregnating the soln. into the nonwoven fabric felt by passing through rollers, and (c) drying the felt.
Abstract translation: 用于处理防尘罩的过滤器的方法包括：（a）将1-30重量％的触感树脂与香豆酮 - 茚树脂（或石油树脂或烷基酚树脂）混合并溶解于有机溶剂中。 溶剂即二氯甲烷，苯，甲苯，（b）浸渍溶胶。 通过辊子进入无纺布毡，（c）干燥毡。
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公开(公告)号：KR1019950005297B1
公开(公告)日：1995-05-23
申请号：KR1019920021910
申请日：1992-11-20
Applicant: 한국화학연구원
IPC: B22F9/00
Abstract: adding an organic solvent to the stainless steel scrap generated in surface grinding process of the stainless steel; dissolving the degreased scrap in strong acid and filtering it to add alkali; granulating the filtered scrap in polymeric granulating agent and sieving it; and reducing the sieved stainless steel powder at 900-1200 deg.C for 1-3 hrs. under H2 gas atmosphere.
Abstract translation: 在不锈钢的表面研磨过程中产生的不锈钢废料中加入有机溶剂; 将脱脂废料溶解在强酸中并过滤以加入碱; 将过滤的废料在聚合物制粒剂中造粒并筛分; 并将筛分的不锈钢粉末在900-1200℃下还原1-3小时。 在H2气氛下。
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公开(公告)号：KR1019920004710B1
公开(公告)日：1992-06-15
申请号：KR1019880003225
申请日：1988-03-25
Applicant: 한국화학연구원
IPC: C01G25/02
Abstract: The high purity zirconia is produced by mixing unpulverizing zircon with calcium carbonate at 1:3 mole ratio, adding 2 wt.% dihydrocalcium chloride to the mixture, moulding, decomposition-reacting it at about 1350 deg.C, crushing, producing calcium zirconate in hydrochloric acid solution, resulutioning the rpoduct in hydrochloric acid solution to remove the insoluble material, adding sulfuric acid to obtain alkali zirconium sulfate, filtering and washing the precipitate of zirconium sulfate, and calcinating it at 800 deg.C or more. The yield rate of zirconia is about 97 %.
Abstract translation: 高纯度氧化锆是通过将未熔化的锆石与碳酸钙以1:3的摩尔比混合而制得的，向混合物中加入2重量％的二氯氯化钙，成型，在约1350℃下分解反应，粉碎，产生锆酸钙 盐酸溶液中，在盐酸溶液中稀释溶液，除去不溶物，加入硫酸得到碱式硫酸锆，过滤并洗涤硫酸锆沉淀物，并在800℃以上煅烧。 氧化锆的产率约为97％。
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Patent Agency Ranking
公开(公告)号：KR1019900007079B1
公开(公告)日：1990-09-28
申请号：KR1019880009423
申请日：1988-07-27
Applicant: 한국화학연구원
IPC: C04B38/02
Abstract: The waterproof gypsum-foam body is manufactured by mixing burnt gypsum with 0.5-10 wt.% waterproofing agent and 0.5-10 wt.% calcium hydroxide to the dry powdered gypsum, mixing the mixt. with the foam made of water and foaming-agent, pouring it in a mould, drying at room temp., and demoulding. The foaming agent is polyvinyl alcohol, surfactant or their admixture and the waterproofing agent is the dry mixture powder of aqueous silicon resin and burnt gypsum.
Abstract translation: 通过将烧石膏与0.5-10重量％的防水剂和0.5-10重量％的氢氧化钙混合到干粉状石膏中，混合混合物制造防水石膏泡沫体。 用水和发泡剂制成泡沫，将其倒入模具中，室温干燥，脱模。 发泡剂是聚乙烯醇，表面活性剂或其混合物，防水剂是硅树脂水和烧石膏的干混合粉末。
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公开(公告)号：KR1019900000756B1
公开(公告)日：1990-02-15
申请号：KR1019880001441
申请日：1988-02-13
Applicant: 한국화학연구원
IPC: C04B38/00
Abstract: A waterproof foamed gypsum is produced by mxing lime slurry, accelator and polyvinyl alcohol foams, and slip casting. The line slurry comprises 100 wt.% burnt plaster, 0.5 wt.% aq. silicon resin, 10 wt.% calcium hydroxide and a little retarder. The producted gypsum has a good waterproofing, fireproofing, sound proofing and insulating property.
Abstract translation: 通过生产石灰浆，压缩机和聚乙烯醇泡沫以及滑移铸造生产防水泡沫石膏。 线浆料包括100重量％的烧制石膏，0.5重量％ 硅树脂，10重量％氢氧化钙和一点缓凝剂。 产品石膏具有良好的防水，防火，隔音和隔热性能。
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公开(公告)号：KR1019950005296B1
公开(公告)日：1995-05-23
申请号：KR1019920021908
申请日：1992-11-20
Applicant: 한국화학연구원
IPC: B22F9/00
Abstract: adding an organic solvent to the stainless steel scrap generated in surface grinding process of the stainless steel; removing an oil and a grinding material, which are contained by the stainless steel scrap, by ultrasonic cleaning; heating the purified scrap to oxidize partially the cleaned scrap; pulverizing the partial oxidized scrap; and reducing the partial oxidized pulverized powder at 1000-1300 deg.C for 1-3 hrs. under H2 gas atmosphere.
Abstract translation: 在不锈钢的表面研磨过程中产生的不锈钢废料中加入有机溶剂; 通过超声波清洗除去不锈钢废料所含的油和研磨材料; 加热净化的废料以部分地将清洁的废料氧化; 粉碎部分氧化废料; 并在1000-1300℃下将部分氧化的粉碎粉末还原1-3小时。 在H2气氛下。
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