本文選題：廢渣微晶玻璃　切入點：陶瓷燒結法　出處：《鄭州大學》2010年碩士論文　論文類型：學位論文

【摘要】： 廢渣微晶玻璃具有高強度,耐磨損,耐化學腐蝕等許多優(yōu)良的性能,廣泛應用于建筑裝飾行業(yè)。目前常用的制備方法有熔融法和燒結法,這兩種方法在前期的玻璃熔制過程中存在著能耗大,工藝復雜的缺點。高爐水淬渣是一種玻璃態(tài)物質(zhì),若以它為主要原料,利用陶瓷燒結法制備微晶玻璃,可省去常規(guī)工藝前期的玻璃熔融工序,簡化工藝,降低能耗,提高廢渣利用率。 本文綜述了目前國內(nèi)外高爐渣、粉煤灰的利用狀況及廢渣微晶玻璃的研究現(xiàn)狀。采用X熒光光譜儀、XRD、DSC-TG、SEM、激光粒度分析儀等檢測手段對高爐渣、粉煤灰及制備的微晶玻璃進行分析表征。研究了化學組分、助熔劑含量、高爐渣粉體粒度、熱處理制度等工藝參數(shù)對微晶玻璃性能的影響,探討了該系玻璃析晶動力學判據(jù),嘗試了幾種著色劑的著色效果。 實驗結果表明：高爐渣和粉煤灰是由玻璃相和少量晶相組成的硅酸鹽質(zhì)物質(zhì),以高爐渣為主要原料(加入量可達90 wt%以上),添加一定量的粉煤灰和助熔劑,采用陶瓷燒結法,能制備出主晶相為黃長石且性能優(yōu)良的微晶玻璃。粉煤灰添加量為5 wt%時,制備的微晶玻璃中晶粒細小且均勻分布在玻璃基體中,晶粒尺寸2-3μm,密度、吸水率、抗彎強度及顯微硬度分別為2.66 g/cm3、0.12%、96.99 MPa.4.9 GPa,耐酸堿腐蝕損失率幾乎為零,隨粉煤灰含量繼續(xù)增加,試樣力學性能惡化；少量長石在高溫時形成的液相能很好的促進燒結,其添加量為5 wt%時,制備的樣品中晶粒尺寸為1-2μm,顯微硬度達到5.2 GPa；細高爐渣粉體有利于細小晶體的析出及微晶玻璃性能的提高,D(90)為20μm左右的高爐渣粉體制備的微晶玻璃中晶粒尺寸為1μm左右,顯微硬度達5.3 GPa；晶化時間為40 min時,制備的試樣中晶粒細小,多呈粒狀；隨燒結溫度的升高,試樣密度和吸水率下降,晶相含量減少,在1200°C燒結時,力學性能最好。對該系玻璃析晶動力學研究表明：K值法得到的結果和實驗相符,適合本體系析晶動力學判據(jù)。 對Co2O3、Cr2O3、CuO、ZrO2、Fe2O3、MnO2著色效果的研究表明：著色效果和著色劑含量、燒結氣氛密切相關,其中Co2O3、Cr2O3、MnO2的著色效果很明顯,含量為1.5 wt%時,即可將微晶玻璃著成深藍、墨綠和淡紫色。
[Abstract]:Waste slag glass-ceramics have many excellent properties, such as high strength, wear resistance, chemical corrosion resistance and so on. They are widely used in building decoration industry. These two methods have the disadvantages of high energy consumption and complicated process in the early stage of glass melting. Blast furnace water quenched slag is a kind of glass-state material. If it is used as the main raw material, the glass-ceramics can be prepared by ceramic sintering method. It can save the glass melting process, simplify the process, reduce the energy consumption and improve the utilization ratio of waste residue. In this paper, the utilization of blast furnace slag and fly ash at home and abroad and the research status of waste slag glass-ceramics are reviewed. The blast furnace slag is tested by means of X-ray fluorescence spectrometer (XRDX), DSC-TGG (SEM), laser particle size analyzer (LPA) and so on. The effects of chemical composition, flux content, granularity of blast furnace slag powder and heat treatment system on the properties of glass-ceramics were studied. The coloring effect of several colorants was tried. The experimental results show that the blast furnace slag and fly ash are silicate materials composed of glass phase and a small amount of crystal phase. The blast furnace slag is used as the main raw material (the amount of blast furnace slag can reach more than 90 wt%), a certain amount of fly ash and flux is added, and the ceramic sintering method is used. The glass-ceramics whose main crystal phase is yellow feldspar and excellent performance can be prepared. When the content of fly ash is 5 wt%, the crystallite in the glass-ceramics is fine and evenly distributed in the glass substrate, the grain size is 2-3 渭 m, the density, the water absorption rate, and the crystal size of the glass-ceramics are 2 ~ 3 渭 m. The flexural strength and microhardness were 2.66 g / cm ~ (3) 0.12m ~ (0.12) and 96.99 MPa.4.9 GPa.The corrosion loss rate of acid-alkali resistance was almost zero. The mechanical properties of the samples deteriorated with the increase of fly ash content, and the liquid phase formed by a small amount of feldspar at high temperature could promote sintering very well. When the addition amount is 5 wt%, The grain size of the prepared samples is 1-2 渭 m and the microhardness is 5.2 GPa.The fine blast furnace slag powder is beneficial to the precipitation of fine crystals and the improvement of glass-ceramics properties. The grain size of the glass-ceramics prepared by the blast furnace slag powder with about 20 渭 m is about 1 渭 m. The microhardness is 5.3 GPA, the crystallization time is 40 min, the grain size is fine, and the sample density and water absorption decrease with the increase of sintering temperature, and the content of crystal phase decreases at 1200 擄C. The study on crystallization kinetics of the glass system shows that the results obtained by the ratio K value method are in good agreement with the experimental results, and are suitable for the crystallization kinetics criterion of the system. The coloring effect of Co _ 2O _ 3 / Cr _ 2O _ 3C _ 2O _ 3C _ 2O _ 3H _ 2O _ 2o _ 2 Fe _ 2O _ 3H _ 2O _ 3O _ 2 shows that the coloring effect is closely related to the colorant content and the sintering atmosphere. The coloring effect of Co _ 2O _ 3O _ 3C _ 2O _ 3H _ 2O _ 3MnO _ 2 is very obvious. When the content is 1.5 wt%, the glass-ceramics can be deposited into dark blue, dark green and lavender.
【學位授予單位】：鄭州大學
【學位級別】：碩士
【學位授予年份】：2010
【分類號】：TQ171.733

【引證文獻】

相關碩士學位論文 前1條

1 彭長浩;利用廢玻璃和粉煤灰制備建筑微晶玻璃及其性能研究[D];南昌航空大學;2012年

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本文編號：1620138