粉煤灰陶粒自动化生产技术在鹤壁矿区的应用

论述了化学法和烧结法两种粉煤灰陶粒生产技术的特点,鹤壁煤业集团公司采用美泰科烧结机法生产粉煤灰陶粒的工艺,具有掺灰率达95%以上、生产能耗及成本低、自动化程度高、陶粒强度高、环保效果好等特点,并取得了明显的经济和社会效益。     

重庆永荣电厂粉煤灰炉渣综合利用效果好

近年来 ,重庆永荣矿业公司发电厂综合利用粉煤灰炉渣 ,创造出明显的经济和环保效益。该厂锅炉发电每年要“吃”掉煤矸石 34万t,产生的 1 8万t粉煤灰炉渣 ,全部用于渣砖、水泥、钙镁磷肥料等产品的生产原料。其中供应周边地区水泥厂生产水泥 ,每年要消化 1 0万t粉煤灰炉渣 ;供应荣昌长桥有限公司低标号砌筑水泥厂生产低标号砌筑水泥 ,每年要消化 3万t粉煤灰。 2 0 0 1年 ,该厂与重庆江津某磷肥厂共同建成一座年消耗 5万t粉煤灰干细灰的钙镁磷肥厂 ,2 0 0 2年以来 ,已“吃”掉近 8万t的干细灰 ,生产钙镁磷肥 ,市场销售前景看好。钙镁磷肥产品…     

粉煤灰与砂加气混凝土砌块的生产工艺特点及性能

探讨了粉煤灰、砂及粉煤灰与砂混合3种加气混凝土砌块的生产工艺特点,检测对比了不同硅质材料加气混凝土砌块的产品性能,分析了灰砂比对粉煤灰与砂混合加气混凝土砌块产品性能及生产工艺的影响规律。研究表明,灰砂比为6∶4时,粉煤灰与砂混合加气混凝土砌块产品综合性能最优。     

大宗粉煤灰的综合利用及提质方案

对于大宗粉煤灰原灰进行分选加球磨机粉磨,同时添加合适的激发剂进行提质,可以生产出不同细度和活性的粉煤灰产品,提升粉煤灰在水泥及商品砼中的用量。介绍了某发电公司的粉煤灰处置现状,在此基础上,对商品砼的粉煤灰性能要求进行了大量市场调研,针对性地给出了该公司粉煤灰的提质方案,最后进行了提质粉煤灰的应用市场和产品竞争力分析。     

循环流化床固硫灰的特性及应用途径

通过研究煤中含硫量与固硫剂最佳掺加量,作到生产的粉媒灰既满足环保要求又切实保证粉煤灰的质量,以期达到综合利用循环流化床固硫粉煤灰目标。     

粉煤灰复合磁化肥技术

粉煤灰复合磁化肥技术电力部南京电力环保科研所（２１００３１）１概述粉煤灰具有一定的天然肥效已为大家所公认，近些年来所进行的灰场种植及其它在用试验也已反复证明了这一点。然而，要达到一定的增产效果，必需施用大量粉煤灰，这在农业生产中很难做到。粉煤灰磁化肥...     

粉煤灰分选粗灰磨细研究及生产

粉煤灰综合利用行业分选技术得到了发展，随之产生的粗灰利用价值不高，仍有二次污染。为实现零排放，本文介绍了对分选选粗灰的磨细研究及超细磨生产技术。这些技术已应用在实际工程中，取得了良好的经济、技术和社会环保效益。     

粉煤灰商品化技术途径的探讨

以某磨细粉煤灰厂新增分选方案的可行性研究为例，探讨了商品灰生产的最佳技术途径。现有磨细灰厂，通过新增分选设备可增加处理能力．提高产品档次；现有分选灰厂，通过新增磨细设备可将粗灰加工成符合Ⅱ级粉煤灰标准的产品；不同厂家不同品质的分选粗灰对磨细系统产量的影响不同，在分选与磨细系统的技术参数之间存在着一个最佳匹配。     

粉煤灰在道路基层中的应用

本文介绍了粉煤灰，石灰，碎石等材料的路用性能，二灰碎石混合料的技术特性，粉煤灰在使用中的环保问题。     

永济电厂千方百计搞好粉煤灰综合利用

永济电厂千方百计搞好粉煤灰综合利用山西省电力公司永济热电厂粉煤灰利用工作，我厂起步虽然很早，但１９９３前由于种种原因发展一直较为缓慢。年利用灰量只有１万余ｔ，只占年排灰量的４％。这样低的利用率远远无法适应安全生产及环保工作的需求。随着国家有关部委、省...     

提高湿排粉煤灰活性及其应用的研究

介绍了湿排粉煤灰经活化、改性与成球制成高活性混合材的原理、工艺及使用效果。试验结果表明,这种活化粉煤灰能替代矿渣生产普通硅酸盐水泥,部分替代矿渣生产矿渣硅酸盐水泥,生产粉煤灰水泥时,其掺量可比一般粉煤炭增加15％左右,同时能克服以往粉煤灰作混合材时所引起的粉尘大、易堵塞及粉煤灰分层上漂等弊端。     

脱硅粉煤灰浆液过滤介质选择与滤饼洗涤研究

针对高铝粉煤灰预脱硅-碱石灰烧结法工艺,脱硅粉煤灰浆液的过滤与洗涤是影响过滤效果和生产能力的关键点,为此通过实验研究了不同过滤性能的滤布对过滤效果的影响,筛选出了适宜的滤布。针对滤饼洗涤,研究了洗涤次数与洗涤方式对滤饼洗涤效果的影响,为脱硅粉煤灰浆液的过滤与洗涤的工业应用提供了依据。     

Continuous Separation of Hexavalent Chromium in a Packed Bed of Flyash Pellets

The metal pollutant hexavalent chromium has been separated from flyash. Various types of flyash pellets were prepared by mixing flyash with different binders, such as cement, bitumen, kaolin, etc. Pellets containing 20% (w/w) kaolin were found to have satisfactory separation efficiency. Break through curves for a hexavalent chromium separation process at different bed heights, flow rates, and temperatures were evaluated. It was also observed that Cr (VI) removal in the packed bed increases with an increase in temperature and bed height but decreases with an increase in flow rate. Presence of other competing cations had no significant interference on separation. Desorption of adsorbed Cr (VI) from a packed bed of flyash pellets using H₂SO₄ and NaOH as eluants was also studied; it was found that sulfuric acid has better desorption efficiency. Leaching of Cr (VI) from flyash pellets to an aqueous phase at different temperatures was studied and it was observed that release of chromium (VI) is not a spontaneous process. The extent of leaching was markedly reduced when cement was present in the flyash as binder and temperature has little effect on the leaching. A model for break through curves has been established to co-relate the relative hexavalent chromium separation efficiency of flyash with other variables.     

粉煤灰釉面砖的试验研究

以粉煤灰为主要原料，以其它硅酸盐原料做辅助料，试制出性能优良的陶瓷釉面砖。本文主要讨论了粉煤灰掺加量、烧成温度和气氛等工艺因素对釉面砖性能的影响，并确定了最佳掺灰量和生产工艺。     

On the catalytic performance in isopropylation of benzene over H/β zeolite catalysts: Influence of binder

A largely unsolved problem in environmentally detrimental waste products is utilization of flyash. Zeolite beta is synthesized using flyash as a source of silica and alumina. Isopropylation of benzene has been used as a probe reaction to evaluate the quality of flyash-based zeolite beta. Influence of the different percentages of alumina binder and formulations on the catalytic performance in isopropylation of benzene reaction over protonic forms of flyash zeolite beta (H/β) has been investigated. It is also shown that, flyash based zeolite beta synthesis opens new possibilities for commercialization of environmentally detrimental product to cost-effective and eco-friendly catalyst of commercial interest.     

粉煤灰釉面砖试验研究

以粉煤灰为主要原料，以其他硅酸盐原料为辅助原料，试制出性能优良的陶瓷釉面砖。笔者主要讨论了粉煤灰掺入量、烧成温度和气氛等工艺因素对釉面砖性能的影响，并确定了粉煤灰最佳掺入量和生产工艺。     

Application of flyash instead of activated carbon for oxalic acid removal

Flyash, a waste product from thermal power plants, has been used as an adsorbent for the removal of oxalic acid. The adsorption process follows first-order kinetics and the equilibrium is attained within 30 min in the concentration range studied (0.01-0.1M). The adsorption obeys both the Freundlich and Langmuir isotherms and the constants have also been reported for flyash and activated carbon. At low concentrations, the increase in pH with flyash is comparatively more than for activated carbon. There seems to be a good scope for the use of flyash in place of activated carbon as an adsorbent for oxalic acid removal.     

粉煤灰物理序参量的系统化

近年来,作者等通过系列的粉煤灰特征化和系统化基础研究,形成了粉煤灰物理序参量系统。这个系统的实用性是能够提供大量有序信息,故称之为“脉搏系统”。本文介绍了粉煤灰物理序参量系统的构建。此系列的应用有助于粉煤灰资源开发及有利于粉煤灰质量从无序状态到相对稳定和有序状态的发展。     

以粉煤灰为基础的微晶玻璃复合墙地砖研制

将粉煤灰引入微晶玻璃来制备复合墙地砖材料是一引人注目的课题。笔者以Li2O-CaO-Al2O3—SiO2为系统来制备微晶玻璃，利用其微负膨胀性，良好的析晶效果，易于与坯体相结合，消除内应力等优点来制备复合墙地砖。试验表明：将基础玻璃粉平铺于普通瓷质砖上，经一次烧结可制成表层为微晶玻璃，底层为普通瓷砖的复合材料。这既充分利用了粉煤灰，又具备微晶玻璃的各种优良性能，而且产品的工艺及合格率完全符合实际生产要求。