配型煤炼焦技术可以改善煤料的粘结性,增强焦炭强度,节约优质煤资源。文章分析了配型煤炼焦对炼焦煤料性能的影响机理,介绍了新日铁配型煤和住友金属配型煤炼焦工艺,以及各焦化厂通过焦炉实验和生产实践总结的配型煤炼焦的结果。

Coal blending coking technology could improve the adhesion of coal, enhanced coke strength, high quality coal resource saving. Paper analyzed properties of coking coal blending for coking coal mechanism, introduced Nippon Steel iftted with Sumitomo Metal and coal briquette coke making process, as well as various coking plants matched the result through the coke oven experiment and the production practice which the coal coking obtained.

依托S02型磨煤机,对胜利5层褐煤开展试验研究及选型计算,提出了采用与胜利5层褐煤相匹配FM410.1300型风扇磨煤机,并按6+2进行配置,在单台磨煤机通风量满足BMCR负荷对给煤量干燥的要求时,风煤比为1.54。按照S02型磨煤机试验曲线得出的煤粉细度R90、制粉单耗、磨煤机通风量和提升压力,并对其修正后得到该风扇磨煤机的提升压力为1 594Pa。制粉系统管道阻力建议与该磨煤机提升压力相匹配。对小型S02型磨煤机和现场MB3600/1000/490型大型风扇磨煤机分别进行了胜利5层褐煤风扇磨煤机的选型计算,得出的磨煤机提升压力计算结果基本一致,表明依据小型S02型风扇磨煤机进行风扇磨煤机关键参数选型可行。

On the basis of the test research on Shengli lignite coal grinding and calculation about large fan mill type-selection,the method of fan mill type-selection was proposed for lignite with low calorific value, low grindability,high moisture and used in high altitude conditions.It suggested the FM410.1300 fan mill be adopted and configured in 6+2 mode.When the ventilation volume of a single fan mill satisfies the re-quirements of coal dryness in BMCR load condition,the air coal ratio is 1.54.Furthermore,according to such parameters as coal fineness R90,pulverizing unit coal consumption,ventilation and booster pressure picked up in the commissioning curves of S02 mill,the corrected booster pressure of the FM410.1 300 fan mill is 1 594 Pa.The pipeline resistance is suggested to be matched with the corresponding booster pres-sure.Fan mill type selection calculation for small S02 mill and the field MB3600/1000/490 large scale fan mill was conducted respectively.The obtained booster

将大量粒径小于3mm的废弃兰炭粉末制气化型煤既可以降低气化型煤的成本,也充分利用了资源。本文采用常温加压成型工艺,重点研究了不同黏结剂对型煤性能的影响,并考察了添加阻熔剂后兰炭灰渣熔点的变化情况。结果表明,在相同添加量下,有机黏结剂制备的型煤落下强度大,但热稳定性差;而以无机黏结剂制备的型煤落下强度小,影响型煤热值,但热稳定性好。黏土1(wAl2O360%)既有黏结性能,又能很好地提高煤灰熔融特性。将腐殖酸钠、淀粉、黏土1复合黏结剂可以使兰炭型煤落下强度和灰熔点满足气化型煤的要求。

A large quantity of semi-coke powder with particle size less than 3mm are used to make gasification briquette,which can not only reduce the cost of gasification briquette,but also make full use of resources. Briquette coal is molded at room temperature and under pressure. This paper focuses on the influence of different binders upon the properties of briquette coal and the change of ash melting temperature of semi-coke when refractory agent is added. With the same amount of binder,the briquette coal with organic binder has higher falling shatter strength and higher calorific value than that with inorganic binder,but its thermal stability is poor. Clay 1 (wAl2O3>60%) not only has bonding capability,but also increases the melting point of coal ash. The composite binder,containing sodium humate,starch,clay 1,can make the falling shatter strength and ash melting point of semi-coke meet the requirements of gasification briquette.

为提高烟煤型煤机械强度，以加工后的腐植酸为黏结剂制备烟煤型煤，采用单因素实验和正交实验研究了加热时间、NaOH 质量分数、黏结剂加入量、加热温度对腐植酸烟煤型煤抗压强度和跌落强度的影响。结果表明：利用腐植酸制备的烟煤型煤具有良好的机械强度，粉煤成型率较高。影响腐植酸烟煤型煤机械强度的主要因素是黏结剂加入量，其次为 NaOH 质量分数、加热温度、加热时间。烟煤型煤制备的最佳工艺条件为：加热时间130 min，NaOH 质量分数6％，加热温度90℃，黏结剂加入量15％，此时型煤抗压强度为1620.2 N/个、跌落强度为99.0％。利用改性腐植酸可制备出适用于工业生产的烟煤型煤。

In order to improve the mechanical strength of bituminous briquette,the modified humic acid was adopted as binder.The influ-ence of heating time and temperature,mass fraction of NaOH,humic acid addition on compressive strength and dropping strength of bri-quette was investigated through the single element experiment and orthogonal experiment.The results showed that the modified briquette had better mechanical strength,the briquetting ratio of fine coal was high.The main influencing factor was humic acid addition,followed by mass fraction of NaOH,heating time and temperature.The optimum technological condition was that the heating time was 130 minutes,the mass fraction of NaOH was 6%,the heating temperature was 90 ℃ ,the addition of modified humic acid was 15%.Under the optimum con-dition,the compressive strength and dropping strength of briquette was 1620.2 N,99.0%.The bituminous briquette bonded by modified hu-mic acid was suitable for industrial production.

为研究型煤制备工艺与性能之间的关系，以指导生产工艺优化，利用单偏光显微镜及数字图像处理技术对不同黏结剂添加量和成型压力下制备的型煤空隙总体特征，以及水平方向与垂直方向上空隙分布特征进行研究，深入分析了空隙直径、位置及定向程度等特征。研究结果表明：不同黏结剂添加量及成型压力制备的型煤中空隙率差别较大；型煤水平方向与垂直方向上空隙率不同，水平方向上空隙直径较为集中；型煤空隙分布不均匀，定向程度差；型煤空隙从表面到内部有增大趋势。

In order to study the relationship between briquette preparation technique and performances and guide the optimization of the production technique,a single polarized microscope and digital image processing technology were applied to two aspacts study,which the total void features and the horizontal and vertical void distribution features of the briquette prepared with different quality binder and differ-ent pressure,and to the deep analysis on the void diameter,location,orientation degree and other features.The study results showed that the void rate of the briquette prepared with different quality binder and different pressure would be have big difference.The horizontal and verti-cal void rates of the briquette would be different and the horizontal void diameter would be concentrated. The void distribution of the bri-quette would be inhomogeneous and the orientation degree would be poor.The void of briquette from the surface to the internal would be in an increasing tendency