本文選題：廢玻璃 + 煤矸石　； 參考：《合肥工業(yè)大學(xué)》2015年碩士論文

【摘要】：本文分別使用廢玻璃、煤矸石、粉煤灰以及氣化渣為原料,加入一定量的粘結(jié)劑和造孔劑經(jīng)模壓或擠出成型后燒結(jié)制備出相應(yīng)的無(wú)機(jī)多孔材料,并使用一系列測(cè)試手段對(duì)樣品的物相組成、孔隙率、抗彎強(qiáng)度、孔徑分布以及顯微形貌等進(jìn)行表征,所得多孔陶瓷材料可應(yīng)用于水處理和空氣凈化,既消耗了固體廢棄物,又降低了環(huán)保工藝成本,具有一定的科學(xué)意義和工程價(jià)值。使用純玻璃粉末低溫?zé)Y(jié)制備出多孔玻璃。保溫時(shí)間為30main時(shí),當(dāng)溫度從640℃提高到670℃,多孔玻璃的開(kāi)孔率從37.4%下降到29.4%,同時(shí)抗彎強(qiáng)度從2.5MPa提高到12.8MPa,平均孔徑先增大后減小。在相同燒結(jié)溫度下,多孔玻璃的孔隙率隨著造孔劑含量的提高而增大,然而過(guò)多的淀粉含量(16%wt)會(huì)對(duì)其強(qiáng)度有不利影響。多孔玻璃適宜的燒結(jié)溫度區(qū)間很窄,670℃下燒結(jié)30min、造孔劑含量8%的樣品具有較佳的機(jī)械性能,平均孔徑10.70μm,氮?dú)馔亢退糠謩e為13600m3m-2h-1lbar-1和693.4m3m-2h-1bar-1,具有較好的滲透性。以廢玻璃和淮南顧橋煤礦煤矸石為主要原料在950℃到1100℃下燒結(jié)3h制備出具有較高孔隙率、強(qiáng)度以及滲透性的多孔陶瓷,該多孔陶瓷的平均孔徑為2μm左右,主相為石英和鱗石英。當(dāng)樣品的玻璃含量為20%時(shí),隨著燒結(jié)溫度的提高,多孔陶瓷的孔隙率從45.3%下降到32.9%,而抗彎強(qiáng)度則從5.99MPa提升至20.42MPa,平均孔徑及氮?dú)馔肯葴p小后增大。玻璃含量對(duì)樣品的性能也具有很大影響,1050℃下燒結(jié)的樣品,當(dāng)玻璃含量從0增加到30%時(shí),其孔隙率從46.0%下降到22.4%,同時(shí)抗彎強(qiáng)度從9.15MPa提高到21.6MPa,平均孔徑和氮?dú)馔烤鶠橄仍黾雍鬁p小,玻璃含量為10%的樣品滲透性能最佳,平均氮?dú)馔繛?131m3m-2h-lbar-1。采用神華集團(tuán)產(chǎn)出的氣化渣制備多孔陶瓷,當(dāng)燒結(jié)溫度從1000℃提高到1200℃時(shí),其孔隙率的總體趨勢(shì)為減小,抗彎強(qiáng)度相應(yīng)增大,平均孔徑和氮?dú)馔恳搽S溫度的上升逐步提高,但在1150℃時(shí)產(chǎn)生了反致密化的燒結(jié)過(guò)程,導(dǎo)致多孔陶瓷的孔隙率升高,抗彎強(qiáng)度減小。1200℃下燒結(jié)的樣品的孔隙率和抗彎強(qiáng)度分別為39.2%和13.17MPa,平均孔徑為8.371μm,氮?dú)馔靠蛇_(dá)23000m3m-2h-1bar-1。使用粉煤灰為原料制備多孔陶瓷,隨著燒結(jié)溫度從1100℃上升到1300℃,其孔隙率先增大后減小,其中在1300℃下最低,但仍達(dá)47.1%,抗彎強(qiáng)度也隨溫度的上升逐步提高,1300℃下達(dá)到14.84MPa,樣品的平均孔徑從1100℃下的2.03μm逐步增加到1300℃下的5.28μm,氣通量在低于1250℃時(shí)逐步上升,在1300℃時(shí)有所下降,平均氮?dú)馔繛?295m3m-2h-lbar-1。論文還對(duì)粉煤灰多孔陶瓷19通道膜管的實(shí)際制作進(jìn)行了研究,制備出的陶瓷膜管收縮變形量較小,強(qiáng)度較高,適于用作陶瓷濾膜的支撐體。
[Abstract]:In this paper, waste glass, coal gangue, fly ash and gasification slag are used as raw materials, and some inorganic porous materials are prepared by adding a certain amount of binder and pore forming agent after molding or extruding, and a series of testing methods are used to make the composition of the samples, porosity, bending strength, pore size distribution and microscopic morphology. The porous ceramic material can be used in water treatment and air purification. It not only consumes solid waste, but also reduces the cost of environmental technology. It has a certain scientific significance and engineering value. The porous glass is prepared by low temperature sintering of pure glass powder. When the temperature is 30main, the porous glass is raised from 640 to 670. The opening rate decreased from 37.4% to 29.4%, while the bending strength increased from 2.5MPa to 12.8MPa, the average pore size increased first and then decreased. At the same sintering temperature, the porosity of porous glass increased with the increase of pore forming agent content. However, excessive starch content (16%wt) would have adverse effects on its strength. It is very narrow and sintered at 670 C for 30min. The sample with 8% of pore making agent has better mechanical properties, the average pore diameter is 10.70 mu m, nitrogen flux and water flux are 13600m3m-2h-1lbar-1 and 693.4m3m-2h-1bar-1, respectively. The waste glass and Huainan Gu Qiao coal mine coal gangue as the main raw materials are sintered at 950 to 1100 centigrade for 3h preparation The pore size of porous ceramics with high porosity, strength and permeability is about 2 m. The main phase is quartz and quartz. When the glass content of the sample is 20%, the porosity of porous ceramics decreases from 45.3% to 32.9% with the increase of the sintering temperature, while the bending strength increases from 5.99MPa to 20.42MPa. The diameter and nitrogen flux decreased first and then increased. The glass content also had a great influence on the performance of the sample. When the glass content was increased from 0 to 30% at 1050, the porosity of the sample decreased from 46% to 22.4%, and the bending strength increased from 9.15MPa to 21.6MPa. The average pore size and nitrogen flux were increased first and then decreased, and the glass content was 10. The permeability of% sample is the best. The average nitrogen flux is 4131m3m-2h-lbar-1. using the gasification slag produced by Shenhua Group. When the sintering temperature is increased from 1000 to 1200, the overall trend of the porosity is decreased, the bending strength is increased, the average pore size and nitrogen flux are increased gradually with the increase of temperature, but at 11. The porosity of porous ceramics is increased at 50 C and the porosity of porous ceramics is increased. The porosity and bending strength of the sintered samples at.1200 C are 39.2% and 13.17MPa respectively, the average pore size is 8.371 mu m. The nitrogen flux can reach 23000m3m-2h-1bar-1. using fly ash as raw material to prepare porous ceramics. The porosity increased from 1100 C to 1300 C, and the porosity was first increased and then decreased, which was lowest at 1300, but still reached 47.1%. The bending strength increased gradually with the increase of temperature and reached 14.84MPa at 1300 degrees C. The average pore size of the sample increased from 2.03 to 1300 at 1100 C to 5.28 u m at 1300 degrees C, and the gas flux increased gradually at below 1250 C, at 13. At 00 C, the average nitrogen flux is 4295m3m-2h-lbar-1., and the actual production of the 19 channel membrane tube of the fly ash porous ceramics is also studied. The prepared ceramic tube has smaller shrinkage deformation and higher strength, which is suitable for the ceramic filter membrane support.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TB383.4

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本文編號(hào)：2115754