Conversion from iron slags to high function zeolites and their applications

铁渣转化为高性能沸石及其应用

• 批准号: 09651034
• 负责人: YAMAZAKI Atsushi
• 金额: $ 2.18万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09651034/
• 关键词: Iron slags; Hydrothermal synthesis; Solid-state reaction; Acid treatment; Microwave heating; Zeolites; Fluoro-micas

Recently additional reuses of iron slags have been desired to develop the recycling process. In this study, the conversion process from iron slags to some high-performance alumino-silicates having higher functions, i.e. FAU zeolites, X and Y, and fluoro-micas, were developed. Silica gel as the starting material was prepared from water quenched blast furnace slag by pretreated with concentrate hydrochloric acid. Alumino-silica gel controlling the Si/Al ratio was also prepeared slow cooled blast furnace slag by pretreated with dilute hydrochloric acid. The acid treatments were rapidly carried out by using microwave heating method. FAU zeolites, type X and Y, having Si/Al = 1.3 - 9.5 were synthesized hydrothermally from the mixture of the two gels, NaAlO^2 and NaOH solutions in satisfactory yields. These products of zeolite X and Y show large specific surface areas, ca.730 m^2 g and ca. 875 m^2 g of Langumuir adsorption, respectively. Hydrothermal treatment by microwave heating has revealed to be a rapid method for synthesizing a homogeneous and fine FAU zeolite powders, compared with a direct heating method. Sodium-fluorine phlogopites having various chemical compositions were also obtained from the mixture of the alumino-siica gel, Al_2O_3, NaF, MgF_2 and MgO by solid-state reactions at 800 - 1000*. The obtained fluoro-micas showed the high crystallinity, thin-platy morphology and homogeneous grain size. These materials converted from iron slags have been confirmed to have equal and/or highly abilities compared to the commercial ones.

最近，人们希望对铁渣进行额外的再利用，以开发回收工艺。本研究开发了利用铁炉渣制备高性能铝硅酸盐（FAU沸石、X、Y沸石和氟云母）的工艺。以水淬高炉矿渣为原料，经浓盐酸预处理制备硅胶。用稀盐酸预处理缓冷高炉渣，控制硅铝比，制备了铝硅凝胶。采用微波加热法快速进行酸处理。以NaAlO^2和NaOH溶液为原料，水热合成了硅铝比为1.3 ~ 9.5的FAU分子筛X型和Y型。这些X型和Y型沸石产品具有较大的比表面积，分别为约730 m^2 g和约730 m^2 g。875 m^2 g朗格缪尔吸附。与直接加热法相比，微波加热水热法是一种快速合成均匀、细粒度FAU分子筛的方法。在800 ~ 1000 ℃下，由铝硅凝胶、Al_2O_3、NaF、MgF_2和MgO的混合物经固相反应，得到了不同化学组成的钠氟金云母。所得氟云母结晶度高，形貌为薄片状，粒径均匀。这些材料从铁渣转化已被证实具有相同的和/或更高的能力相比，商业。

项目成果

平岩万奈, 山崎淳司, 名古屋俊士: "Na-X型ゼオライトによるフロン11分解の分子動力学シミュレーション" 日本セラミックス協会学術論文誌. 105・10. 901-905 (1997)

Mana Hiraiwa、Junji Yamazaki、Toshishi Nagoya：“使用 Na-X 型沸石进行 Freon-11 分解的分子动力学模拟”日本陶瓷学会杂志 105/10 (1997)。

十河友, 飯塚史明, 山崎淳司: "アポフィライトからの含水層状シリカ及び層状アルミノシリケートの調整とその性質" 日本セラミックス協会学術論文誌. 106・2. 160-168 (1998)

Tomo Sogo、Fumiaki Iizuka、Junji Yamazaki：“从鱼眼石中制备水合层状二氧化硅和层状铝硅酸盐及其性能”日本陶瓷学会杂志 106・2（1998 年）。

Y.Sogo, T.Kumazaki and A.Yamazaki: "Methylene Blue Adsorption for Layerd Alumino-Silicate Prepared from Apophyllite" NENDO KAGAKU (J.Clay Soc.Jpn.). Vol.38, No.2. 47-53 (1998)

Y.Sogo、T.Kumazaki 和 A.Yamazaki：“亚甲蓝吸附从鱼眼石制备的层状铝硅酸盐”NENDO KAGAKU (J.Clay Soc.Jpn.)。

A.Yamazaki and H.Nishido: "Mineral Chemistry of Laumontite-Its Dehydration and Rehydration Behavior-" Zeolite News Letters. Vol.14, No.4. 153-158 (1997)

A.Yamazaki 和 H.Nishido：“浊沸石的矿物化学 - 其脱水和再水合行为 -”沸石通讯。

上原元樹, 山崎淳司, 堤貞夫: "塩基性炭酸鉛カルシウム-膨潤性雲母複合体(ス-ライト様物質)の合成と性質" 日本セラミックス協会学術論文誌. 105・10. 897-901 (1997)

Motoki Uehara、Junji Yamazaki、Sadao Tsutsumi：“碱式碳酸铅钙-可膨胀云母复合物（S-lite 类材料）的合成和性能”日本陶瓷学会杂志 105/10（1997）。