利用精密鑄造回收耐火物製作B1等級保溫磚材

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题名:	利用精密鑄造回收耐火物製作B1等級保溫磚材 Making B1 Class Insulation Bricks by Using Precision Casting to Recover Refractory Materials
作者:	陳冠福
贡献者:	化學工程與材料工程學系奈米材料碩士班
关键词:	廢鑄砂爐碴保溫磚氧化矽焦寶石 Waste cast sand Hearth Insulation brick SiO2 coke gems
日期:	2019
上传时间:	2019-08-13 13:21:11 (UTC+8)
摘要:	本研究中，我們將鑄造業中產生最大量之廢鑄砂及爐碴再利用，製成保溫磚。首先會將廢棄物利用XRD(x-ray diffractometer)進行原料分析，然而將精密鑄造回收耐火物氧化矽、氧化鋁熟料作為磚材添加物，在依不同比例加入黏土A、黏土B、黏土C，以及作為成孔材料之木屑與稻殼灰，攪拌混合後再以壓製法和灌注法成型，製作出7種不同配比樣品，經高溫燒結後，依照CNS國家檢驗標準針對體密度、體積收縮率、再熱收縮率、抗壓強度進行測試，接著再利用XRD將成品進行分析燒結後試體化學組成成份，並且利用SEM(Scanning Electron Microscope)拍攝500倍、1000倍、3000倍、6000倍之成像圖觀察成品成孔形狀與成孔狀態，最後依照JIS標準探討是否符合標準，並分析出最適配比。實驗結果得知，本實驗所做出B1-7試體為最佳成品，其製程比例為添加SiO2 A ％、焦寶石B ％、黏土C C-10 ％、黏土B C2-25 ％、粗木屑D1 ％、H2O 3400 c.c.，使用攪拌速度160 rpm攪拌15分鐘，攪拌速度287 rpm攪拌5分鐘，陳化72小時，自然乾燥與強制對流各24小時，將其成型於250 mm×130 mm×70 mm的鋼模，在燒成時間設定為由室溫到250℃時80分鐘，持溫30分鐘，由250℃升溫到500℃時93分鐘，持溫30分鐘，由500℃升溫到1200℃時100分鐘，持溫2個小時，按照此配方及燒成速率所製成初試體，可使其體比重小於JIS標準的0.7 g/cm3，再熱收縮小於2 ％，並且強度較其他試體強也符合標準的25 kg/cm2。 We will use the largest amount of waste casting sand and furnaces in the foundry industry to make insulation bricks.in this study. First, the waste will be analyzed by XRD (x-ray diffractometer). However, precision casting and recovery of refractory SiO2 and Al2O3 clinker as brick additives. Add clay A, clay B, clay C in different proportions. And wood chips and rice husk ash as pore-forming materials. After mixing and mixing, molding by pressing and pouring . Produced 7 different ratio samples. After high temperature sintering, test according to CNS national inspection standards for bulk density, volume shrinkage, reheat shrinkage, and compressive strength. Then use XRD to analyze and sinter the finished product. And using SEM (Scanning Electron Microscope) to take 500, 1000, 3000, 6000 times imaging images to observe the finished hole shape and hole forming state. Finally, according to the JIS standard, it is discussed whether the standard is met and the most suitable ratio is analyzed. The experimental results show that the B1-7 sample made by this experiment is the best finished product. The process ratio is SiO2 A %, coke gems B %, clay C C-10 %, clay B C2-25 %, coarse wood chips D1 %, H2O 3400 c.c. Stirring at 160 rpm for 15 minutes, stirring at 287 rpm for 5 minutes, organic decay for 72 hours, natural drying and forced convection for 24 hours, and molding it into a steel mold of 250 mm × 130 mm × 70 mm. The firing time is set to 80 ° C for 80 minutes, the temperature is 30 minutes, the temperature is raised to 500 ° C, it takes 93 minutes, the temperature is held for 30 minutes, the temperature is raised to 1200 ° C, it takes 100 minutes, and the temperature is held for 2 hours. he initial test body prepared according to the formulation and the firing rate can make the specific gravity of the body smaller than the JIS standard of 0.7 g/cm3.The reheat shrinkage is less than 2 %, and the strength is stronger than other test bodies and also meets the standard 25 kg/cm2.
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