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RISS 인기검색어
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- 저자 : 趙統來 (검색결과 54 건)
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趙統來 충남대학교 공업교육연구소 1978 論文集 Vol.1 No.1
The Chlorination rate of malachite has been investigated by Using NH_4CI and MgCl_2 as a Function of the heating rates, Flow rates, reaction time, and temperature in Ar and Air. The results were as follows (1) low grade Cupric oxide (malachite) Could be grade up by chlorination using CaC1_2, NaCl, NH_4C1 and MgCl_2, above all, CaCl_2 Was much more effective then others. (2) Ar is better then Air in chiorination of malachite. (3) The Chlorination rates of malachite is inversely proportional to the partial Pressure of oxygcn. (4) Chlorination reaction Was more active at higher temperature than melting Point of NH_4Cl or MgCl_2 etcs.
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趙統來,李芝英 忠南大學校 環境問題硏究所 1983 環境硏究 Vol.1 No.1
이상의 實驗結果 다음과 같은 結論을 얻었다. ① 活性炭은 攪拌時間 60分, 平衡pH6.5∼8.0, 添加量 4.0g에서 As³+, ?? 가 最高의 吸着率인 43.0%, 50%를 나타냈으며 As濃度가 높을수록 다른 試料보다 높은 吸着率을 보인다. ② 제오라이트의 경우, As³+는 攪拌時間 60分, 平衡pH2.0, 添加量 8g에서 最高吸着率인 약 40%를 나타내고 ??는 攪拌時間 60分, 平衡pH6.5, 添加量 4g에서 最高吸着率인 약 40%를 보이며 As농도가 높을수록 吸着率도 增加한다. ③ 酸性白土는 As³+에서는 攪拌時間 60分, 平衡pH2.0, 添加量 8g에서 最高吸着率인 약 15%를 나타낸다. ??는 攪拌時間 60分, 平衡pH6, 添加量 8g일때 最高吸着率인 약 35%를 나타낸다. As濃度가 10ppm 이상에서는 吸着律은 增加되지 않고 一定하다. ④ 紫外線을 照射할 경우 照射時間 3時間, 平衡pH4.5 H₂ 流量 1,000cc/min에서 As³+는 最高除去率인 8% 程度를 나타내고 ??는 그 半程道의 除去率을 보인다. The removal of arsenic from the waste water has been investigated by the means of adsorption with active carbon and zeolite, aluminusilicate, and of ultravioletroy irradiation. Artificial waste solution containg As³+ or ?? was used as experimental solution. The results obtained are as follows: 1. The adsorption ratio of arsenic by aluminasilicate and ultraviolet rays is about 18% and 8%. 2. The adsorption ratio is greatly influenced by the pH condition of the solution.
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O₂氣圈中에서 NaCl의 酸化反應에 對한 速度論的 硏究
趙統來 釜山工業大學校 1975 論文集 Vol.16 No.-
Kinetics of oxidation reaction of NaCl in oxygen stomosphere is studied. Activation energy of this reaction is 43kcal and 52.9kcal. Reaction rate is directly proportional to the suface area and partial pressure of oxygen.
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趙統來 충남대학교 1977 工業技術開發硏究所論文集 Vol.4 No.2
The chlorination rate of malachite has been investigated by using NaCl and CaCl_2 as a function of the heating rates, flow rates of Ar and air and reduction time. The results were as follows. 1. low grade cupric oxide ore could be graded up by chlorination using NaCl or CaCl_2 and CaCl_2 was much more effective than NaCl. 2. Chlorination reaction was more active at higher temperature than melting point of CaCl_2 or NaCl. 3. Ar is better than air in chlorination of cupric oxide ore.
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趙統來,鄭文敎 충남대학교 공업교육연구소 1983 論文集 Vol.6 No.2(B)
Ternary miscibility gap (phase diagram) of the Pb-Cu-S system is important to smelting of lead and copper. We are experimentally determinded this system at 1250℃, 1200℃, 1150℃, and 1100℃ on the previous reports^1), 2). This paper is also experimentally determinded the ternary miscibility gap (phase diagram) of the Pb-Cu-S system at 1000℃. The result obtained at 1000℃ is shown in Fig. 2 of this Report.
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趙統來,金鎭善 충남대학교 공업기술개발연구소 1976 工業技術開發硏究所論文集 Vol.3 No.2
The oxidation rate of calcium chloride has been investigated by measuring titrimetrically the evolution of Cl_2 as a function of the temperature, the partial pressure of oxygen and the surface area of CaCl_2. The following results were obtained: The rate controlling step is a interface chemical reaction. The oxidation rate of CaCl_2 is proportional to the surface area of the CaCl_2 and square root of the oxygen pressure. The activation energy of oxidation reaction of CaCl_2 is 27.3 Kcal.
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제오라이트 鑛物을 利用한 廢水中의 重金屬 除去에 關한 硏究
趙統來,李芝英 忠南大學校 環境問題硏究所 1983 環境硏究 Vol.1 No.1
제오라이트를 利用하여 廢水中의 중금속이온 除去에 관한 실험을 하여 그 결과를 要約하면 다음과 같다. ① 제오라이트에 의한 廢水中의 重金屬이온의 除去에는 용액의 pH가 현저하게 영향을 미치며 pH2.5 이하에서는 除去가 불가능하고 pH3.0 이상에서는 미량을 첨가해도 완전히 제거될 수 있음을 알았다. 또 흡착후의 폐수를 그대로 排出할 수 있다. ② 飽和吸着시간은 60分 정도에서 충분하며 제오라이트 粒度에 의한 흡착량변화는 전혀 없으므로 粒度가 큰 것도 사용할 수 있다. ③ 온도가 높을수록 흡착율이 높고 금속이온이 함께 있을 때 Pb+²>Cu+²>Cd+²> Zn+² 순으로 흡착된다. ④ 交換吸着機構는 Langmuir의 이온교환에 의한다. The removal of Cu, Zn, Cd and Cr ions from waste water has been investigated by the means of adsorption with zeolite. Artificial waste solution containing of Cu²+, Cd²+, Zn²+, Cr³+ and Cr??+ was used as the experimental solution. The results obtained are as follows: 1. The adsorption is greatly influenced by the pH of the solution. 2. The adsorption ratio of Cu, Zn, Cd and Cr ions are reached to 100% 3. The best adsorption performance is achieved in the pH condition of 6.5∼7.
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趙統來,宋昌彬,後藤左吉 忠南大學校 産業技術硏究所 1997 산업기술연구논문집 Vol.12 No.2
There is Zinc present in the sludge of the Iorn and steel making process. If the Zinc in the sludge can be removed cost-effectively, then the sludge can be used as Iorn ore. The Zinc in the sludge can exist in the form of Zn or ZnFe₂O₄. Out of these two, ZnO reacts with NH₄SCN and forms Zn(SCN)₂which disolves lasily in water. However, ZnFe₂O₄does not react well with NH₄SCN and so it cannot be removed using NH₄SCN. The coke oven gas contains sulphur. The sulphur is removed using ammonia as a medium. During this process, waste liquid solution containing about 11% of NH₄SCN and about 9% of (NH₄)₂S₂O₃is produced in a large quantity. One steel mill produces about 140m3 of this waste liquid per day. This solution is simply treated as waste and thrown out. Instead of throwing it out, if we were to use this NH₄SCN solution to remove ZnO from sludge, them I can be done cheaply. This research aims to know how the NH₄SCN solution, which is produced by the gas emitted from cokes furnace, can be used to remove Zinc from the siudge cost-effectivly and to re-use the sludge as Iron ore.
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Fe 중에 Nd확산에 관한 연구(R-D반응의 기초연구)
조통래,송창빈,김대수 忠南大學校 産業技術硏究所 1992 산업기술연구논문집 Vol.7 No.1
The growth of intermetallic compounds of rare earth-transition metal has been investigated by the reduction process. Nd was diffused into Fe block and made intermetallic compounds, only the Nd₂Fe17 diffusion layer was obtained for the Nd-Fe system. It was shown that the growth rate of intermetallic compounes was controlled by diffusion. Apprarent activation energy for the diffusion of Nd was 28.5Kcal/mol through arrhenius plots.
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