粉煤灰处理煤矿酸性废水的研究

采用石灰石中和沉淀，粉煤灰吸附处理煤矿酸性废水，取得了良好的效果。用石灰石调节pH至4.5，再用石灰中和至中性，并用粉煤灰吸附，粉煤灰用量为10g／L时处理效果较好。     

粉煤灰资源化及其综合利用

论述了我国粉煤灰综合利用的现状、途径及技术,针对我国的实际情况,提出了综合利用新技术的发展前景。     

PCDD/F formation from oxy-PAH precursors in waste incinerator flyash

The yield of PCDD/F in relation to the presence of oxygenated PAH in model waste incinerator flyash has been investigated in a fixed bed laboratory scale reactor. Experiments were undertaken by thermal treatment of the model flyash at 250 and 350 °C under a simulated flue gas stream for 2 h. After reaction, the PCDD/F content of the reacted flyash and the PCDD/F released into the exhaust gas, and subsequently trapped by XAD-II resin in a down-stream condensation system were analyzed. The PAHs investigated were, dibenzofuran and benzo[b]naphtho[2,3-d]furan and were spiked onto the model flyash as reactant precursors for PCDD/F formation. The results showed significant formation of furans from both of the PAH investigated, however except from some highly chlorinated dioxin congeners, the formation of dioxins was not so common. Benzonaphthofuran was significantly more reactive than dibenzofuran in PCDD/F formation, in spite of the fact that dibenzofuran is structurally more similar to that of PCDD/F. Thus, there was no clear attribution between the chemical structure of PAH used and the formation of PCDD/F. There were considerable differences between the yields of PCDD/F congeners in the gaseous species and those in the reacted flyash under the same operational conditions. The concentration of PCDD/Fs was reduced at the higher reaction temperature of 350 °C; however, the higher temperature resulted in the majority of the PCDD/F formed on the flyash being released into the gas phase.     

粉煤灰黑液胶凝材料的研究

研究了改性黑液作粉煤灰的激发剂,并与石灰、磷石膏一起制成一种新型的胶凝材料,讨论了粉煤灰、石灰、磷石膏及黑液的用量对胶凝材料性能的影响,并通过正交试验与模糊数学分析求出了最佳工艺参数。试验结果表明,该种新材料的抗压强度能达≥20MPa,耐水性良好,且工艺简单、成本低。     

高铝粉煤灰开发利用的意义及工艺技术对比分析

内蒙古中西部和山西北部等地区的部分煤炭资源中赋存丰富的含铝矿物,用于发电后产生的粉煤灰中氧化铝含量达40-50％,是一种宝贵的具有较高经济开发价值的含铝资源。本文首先介绍了加强高铝粉煤灰资源开发利用的意思及高铝粉煤灰资源现状,然后叙述了目前国内外利用高铝粉煤灰提取氧化铝主要生产工艺及工艺特点,并对不同工艺的能源消耗进行了对比分析。     

利用粉煤灰生产超300^#砼的研究

本文以粉煤灰为主要原料，非蒸养法生产必能优良，超３００＾＃粉煤灰砼，研究了影响粉煤灰胶结料及砼强度的主要因素，找出了获得高度粉煤灰胶结料砼的最佳参数，进行了粉煤灰的性能试验；初步探讨了粉煤灰的砼性能优良的原因，该技术的粉煤灰开辟了一条高价值，大宗利用的有效途径。     

粉煤灰与电石渣治理煤矿自燃矸石山

煤矿自燃矸石山是矿区一大污染源。本文研究了粉煤灰，电石渣这两种工业废弃物作为治理自燃矸石山的灭火材料的可能性。实验室试验表明，在一定的配比下它们具有良好的阻燃性。现场工程获得了成功，不仅取得了良好的环境效益，也取得了良好的经济效益。     

凹凸棒土--粉煤灰颗粒吸附剂的制备及改性

研究了凹凸棒土—粉煤灰颗粒吸附剂的制备方法并对其进行再生和改性，利用比表面积测定、X射线能谱等手段对所制吸附剂进行了表征。结果表明：制备颗粒吸附剂的优化条件为凹凸棒土：粉煤灰=100：40(质量比)，比表面积的值为80．06m^2／g。该吸附剂可采用1mol/L磷酸进行改性，改性后的比表面积为155．6m^2／g。     

污泥粉煤灰混合基质中结缕草发芽率的测定

本文研究了结缕草在污泥与粉煤灰构成的混合基质中的初期成活率,力求使粉煤灰场表层特性适合先锋植被生长,从而加快生态恢复速度,达到以废治污的目的。     

粉煤灰处理印染废水的现状及分析

本文综述了粉煤友在印染废水中的应用。粉煤灰作为吸附剂可直接处理印染废水,处理效率较低,改性后粉煤灰可提高吸附性;利用粉煤灰的混凝作用对COD的去除率一般为50％-60％,色度去除率为80％左右;当粉煤灰与铁屑产生电化学作用时,用于印染废水预处理是行之有效的;作为印染废水助凝助沉剂,结合其他工艺,可使印染废水中COD和色度去除率分别达到90％和95％以上,并列举了粉煤灰处理印染废水成功的实例。但仍应加强理论研究,解决工程与设备问题是今后的工作方向。