动力配煤的研究

本文根据马钢动力燃烧用煤，进行了单工的燃烧特性，动力配煤试验和方案优化以及动力配煤燃烧测试等工作，提出了以炮煤燃烧特征温度、性能价格比等概念优化动力配煤方案。试验结果表明燃用动力配煤能够取得较好的经济和社会效益。     

用试验焦炉优化配合煤细度的试验

介绍了利用40kg试验焦炉优化配合煤细度试验的过程，对试验数据进行了分析，得出配合煤细读与焦碳强度的关系，得到了在该配煤比下配合煤的最佳细度值。     

配合煤中添加焦粉的大炉实验

本文报导在配合煤中添加焦粉的炼焦实验。首先列举配煤比的确定、单种煤的质量、配合煤的质量以及焦粉粒度组成。然后说明在炉温(机侧1220℃,焦侧1260℃)和结焦时间(23小时)的条件下,对实验结果就煤质的选择,焦粉粒度的控制,配合煤质量,焦粉配入量的控制以及焦炭的质量等五方面作了分析。     

关于炼焦配煤的探讨

配煤是炼焦工艺的一个关键。由于煤炭性质、储量、煤种分布、开采及运输等因素的影响,如何根据不同情况,选择出最佳配煤方案,配合出最理想的入炉原料,是一个值得重视的问题。本文就我国现有的各种配煤方法作一探讨。     

不粘结低灰煤用于捣固炼焦生产的探讨

为了扩大炼焦用煤资源和降低生产成本，采用不粘结低灰煤进行配煤炼焦试验并应用于实际生产，焦炭的指标稳定，降低了购煤成本。     

优质冶金焦的试制

使用煤炭资源,优化配煤方案,生产优质冶金焦满足钢铁企业的需要,是我们煤焦研究的重要工作之一。本文阐述该厂生产优质冶金焦的配煤炼焦试验,生产一级、二级冶金焦,以改善焦炭质量,扩大销售市场。进行了20kg电加热焦炉的配煤试验,并在此基础上优选了四个配煤方案,进行了大炉试验,并取得了初步成果。     

JGC-40Ⅰ型带式称重给料机在自动控制系统中的应用

介绍JGC-40Ⅰ型带式称重给料机在配煤控制系统中的应用以及自动配煤系统的组成、原理、功能和特点。     

计算机自动配煤系统

本文主要介绍用计算机控制配煤的原理和方法并根据配煤现场的情况，综合考虑论述了提高配煤比精度的几种途径和编程技巧。     

立窑水泥厂重量法直接配煤与生料烧失量指导重量法配煤的比较

立窑水泥厂重量法直接配煤与生料烧失量指导重量法配煤的比较马泮松周德进（济南黄海水泥有限公司）１简述目前，我国立窑厂大多采用全黑生料配料，生料配煤也多数采用重量法直接配煤和生料烧失量指导重量法配煤两种。１９９６年３月以前，我厂生料配煤主要采用的是生料烧...     

动力配煤燃烧试验与热工分析

动力配煤燃烧试验与热工分析郑明东，姚伯元（华东治金学院，马鞍山２４３００２）侯杰，何世文（马鞍山钢铁股份有限公司动力厂）铁祥鹤，程寿华（马鞍山钢铁股份有限公司炉料公司）本文根据动力配煤研究结果，讨论在马钢４吨链条式层燃锅炉上，分别使用单种煤和配合煤的...     

掺混比对混煤燃烧特性的影响实验研究

采用热重分析仪,对3种单煤以及不同掺混比(质量比)下两两掺混的混煤进行了热重分析实验。根据实验结果,对不同掺混比混煤的着火温度、可燃特性、稳燃特性、燃尽特性及综合燃烧特性等进行了探讨。按一定比例掺混,可有效改善燃煤的燃烧特性。     

捣固炼焦的配煤试验

对不同的配合煤用试验焦炉进行捣固炼焦，捣固炼焦可以提高焦炭机械强度，改善焦炭热性质，多配高挥发分气煤。细度约90％的煤捣固炼焦效果较好。     

粉刷石膏在室内抹灰中的应用

因传统的水泥砂浆或混合砂浆抹灰已不能满足用户对其质量的要求，而粉刷石膏以其结构稳定、不开裂、不脱皮等优点则可能成为二者的理想替代品。详细介绍了粉刷石膏的性能特点、主要性能指标，着重阐述了其施工工艺，提出了在施工中应注意的事项。并指出它的广泛使用将取得显著的经济效益和社会效益。     

沥青混合料搅拌设备实测生产率修正系数的确定

生产率是沥青混合料搅拌设备的主要性能指标，由试验工况得到的实测生产率必须按标准工况修正才科学合理，本文归纳介绍标准工况的定义，同时根据干燥筒热平衡原理推导整理实测生产率及燃油消耗率修正系数的计算公式，并举例予以说明。     

振动拌和SFRC的试验研究

本文针对混凝土普通搅拌的局限性,对振动拌和过程进行了理论分析,将振动强化拌和技术用于SFRC的制备。通过试验研究、比较,得出了振动拌和SFRC的主要参数及影响因素。     

盾构隧道小间距加固实例分析

针对广州地铁二号线南延段东晓南站两端小间距盾构隧道区间,以盾构管片变形和受力及地表沉降作为主要控制目标,对搅拌桩加固施工方案和中隔墙素混凝土钻孔桩方案进行了数值模拟分析和投资比较,为此工程的顺利实施提供依据和指导,可供类似工程参考。     

液化石油气混空气与焦炉煤气的互换性研究

通过液化石油气和空气的不同配比,以及混气与焦炉煤气的不同配比的试验,研究了燃气互换性和燃气压力对混合比的影响。     

Umweltrelevanz von natürlichen polyzyklischen aromatischen Kohlenwasserstoffen aus Steinkohlen – eine Übersicht

Releases of PAHs from hard (bituminous) coals into the environment have not been widely recognized. In hard coals, some hundreds of mg/kg of EPA-PAH and some thousands of mg/kg total PAH concentrations can occur and the concentrations vary significantly depending on hard coal maturity and origin. Highest PAH concentrations are present in the maturity range of the so-called “oil-window” (high volatile bituminous coal rank), however there is no general correlation. Only coals from the same origin can be compared. Naphthalene and phenanthrene as well as their alkylated derivatives are the dominant single polyaromatic compounds in hard coals. The PAH distribution patterns change with increasing rank from the low molecular weight, mostly alkylated compounds with linkage to the original organic material to the predominantly higher molecular weight parent compounds. The former are characteristic for coals of petrogenic origin and the latter for those of pyrogenic origin. Currently, PAHs from coals and from crude oil and its products cannot be distinguished by use of common simple diagnostic parameters. In countries holding large coal basins and associated mining activity, coal particles can comprise 10–15?% of the sediment or soil. Until today, little has been known about desorption and bioavailability of native PAH from coals. Literature studies so far show slow and very slow desorption and hardly any or no effects on organisms. This shows that there is a lack of systematic studies using heterogeneous coals from different countries. Bioavailability of PAH from coal particles in soils and sediments has an impact on risk assessment and should be included in sediment and soil standards.     

2×7 MW锅炉房燃料管理探讨

通过对多品种煤进行化验、计算和优化 ,分析了其特性指标之所以差异很大的原因。采用了将不同种类、不同性质的煤按一定比例掺配加工的方法 ,使其达到锅炉用煤技术指标 ,以保证锅炉的安全、经济运行     

The distribution, occurrence and environmental effect of mercury in Chinese coals

Mercury (Hg) is a toxic, persistent, and globally distributed pollutant due to its characteristic properties such as low melting and boiling points, conversion between chemical forms and participation in biological cycles. During combustion mercury in coal is almost totally emitted to the atmosphere. With a huge amount of coal consumed, coal combustion is one of the main anthropogenic sources of this element in the environment. In this study, Hg data of 1699 coal samples of China has been compiled, and the concentration, distribution, modes of occurrence, and the impact of Hg emissions on the environment are investigated. Most Chinese coals have Hg content in the range of 0.1 to 0.3 ppm, with an average of 0.19 ppm, which is slightly higher than the average Hg content of world coals and is close to that of the U.S. coals. The Hg content in coals varies in different coal basins, geological ages and coal ranks. The most likely mode of occurrences of Hg in high-sulfur and high Hg content coals is as solid solution in pyrite. But in low-sulfur coals, modes of occurrence of Hg are variable, and the organic-bound and sulfide-bound Hg may dominate. Silicate-bound Hg may be the main form in some coals because of magmatic intrusion. Mercury emissions during coal combustion have resulted in serious environmental contamination in China, particularly in the northeastern and southwestern China, where a high Hg content in the atmosphere occurs.