电收尘器在大型钛渣电炉上的应用

介绍了电收尘器在大型钛渣电炉上的应用 ,论证了钛渣电炉烟气静电收尘的可行性     

萍钢301#高炉煤气干法净化长袋脉冲除尘器的设计与制造

资省、占地小、自动化程度高、管理方便、无二次污染、节能等众多优点,介绍了萍乡钢铁有限责任公司第二炼铁厂３０１＃高炉（３８０ｍ３）移地大修改造项目高炉煤气干法净化长袋脉冲除尘器的设计与制造。     

Screening on oil-decomposing microorganisms and application in organic waste treatment machine

As an oil-decomposable mixture of two bacteria strains ( Bacillus sp. and Pseudomonas sp. ), Y3 was isolated after 50 d domestication under the condition that oil was used as the limited carbon source. The decomposing rate by Y3 was higher than that by each separate individual strain, indicating a synergistic effect of the two bacteria. Under the conditions that T = 25-40℃, pH = 6--8, HRT (Hydraulic retention time) = 36 h and the oil concentration at 0.1%,Y3 yielded the highest decomposing rate of 95.7 %. Y3 was also applied in an organic waste treatment machine and a certain rate of activated bacteria was put into the stuffing. A series of tests including humidity, pH, temperature, C/N rate and oil percentage of the stuffing were carried out to check the efficacy of oil-decomposition. Results showed that the oil content of the stuffing with inoculums was only half of that of the control. Furthermore, the bacteria were also beneficial to maintain the stability of the machine operating. Therefore, the bacteria mixture as well as the machines in this study could be very useful for waste treatment.     

无标准石墨炉原子吸收的绝对分析

介绍和讨论了石墨炉原子吸收特征质量m0的概念,并对一些元素m0的理论计算值与测定值作了比较。结果表明,鉴于恒温平台石墨炉(STPE)技术的应用,有可能发展为无标准原子吸收的绝对分析。     

新型鼓风炉铁泥基混凝剂的制备及应用研究

研究在鼓风炉铁泥中加入适量的粉煤灰和助溶剂HS,在90℃温度下搅拌浸取2.5h后,制得集物理吸附和化学混凝为一体的混凝剂.这种混凝剂与PSA絮凝剂配合用于制革和纺织印染废水的处理,与传统混凝剂相比,COD和色度的去除率均提高30%左右.其显著特点是混凝沉降速度快,污泥体积小,处理废水费用低,并结合显微照片探讨了混凝剂对废水的混凝沉降机理.     

长袋低压大型脉冲袋式除尘器在100t直流电弧炉除尘系统中的应用

阐述了长袋低压大型脉冲袋式除尘器在100t直流电弧炉的除尘系统中的流程、设备特点及运行效果.     

Ultrasound-assisted emulsification/microextraction based on solidification of trace amounts of thallium prior to graphite furnace atomic absorption spectrometry determination

In the present work, determination of ultratrace amounts of thallium in water samples was performed by ultrasound-assisted emulsification microextraction based on solidification of a floating organic drop as sample preparation method prior to furnace atomic absorption spectrometry. 1-(2-Pyridylazo)-2-naphthol was used as chelating agent. The factors influencing the complex formation and extraction, such as pH of the aqueous solution, the type and the volume of extraction solvent, the volume of chelating agent solution, and the extraction time were investigated. Under optimized conditions, the enrichment factor was 200. The calibration graph was linear from 0.2 to 10.0 μg L^?1 with a correlation coefficient of 0.9966, the detection limit was 0.03 μg L^?1 and reproducibility was ±3.3% (C = 5.0 μg L^?1, n = 8). The method was successfully applied for the determination of thallium in water samples.     

高炉喷吹煤评价及配比优化

为了提高某钢厂高炉喷吹煤粉的燃尽率,并实现混煤喷吹的配比最优化,采用热重分析和沉降炉试验研究方法,对单种煤的物化和燃烧性能进行了评价,在此基础上对不同配比的配合煤进行燃烧性能评价。研究结果表明,根据着火点最低和燃尽率最高的选取原则,配合煤的最佳优化配方为:52%混合无烟煤+40%烟煤+8%焦粉,燃烧效果良好。     

宣钢2500m~3高炉出铁场除尘系统的改进

宣钢2 500m3高炉炼铁生产过程中,在铁口及摆动溜嘴等处产生大量烟尘,原除尘系统因各种原因不能有效捕集。通过对原除尘系统各支管道进行风量、风压测定,结合高炉实际生产情况,新增一套除尘系统,对原除尘系统管网和各产尘点的捕集罩重新进行设计,使烟尘捕集率达95%以上,有效控制了烟尘外溢。     

高炉煤气洗涤水脱氰研究

氯碱法处理高炉煤气洗涤水,运用正交实验设计方法设计实验,根据直观分析和方差分析方法整理实验数据,得出最佳反应条件,影响因素顺序,显著因素。