烧结空心砖生产中的几个技术关键

略述用粉煤灰、煤矸石等制作烧结空心砖时关于原料条件、原料制备及窑炉选择等问题     

全煤矸石空心砖试验研究

介绍了利用大雁矿务局煤矸石原料生产空心砖的试验研究情况，设计了年产３０００万块全煤矸石内燃空心砖的生产线。     

煤矸石烧结多孔砖在双鸭山地区的应用

双鸭山位于黑龙江省完达山北麓三江平原南端 ,境内有双鸭山矿务局十余座大中型煤矿和两个大型选煤厂 ,年生产煤炭超过一千万 t,每年排放大量煤矸石 ,即占用大量土地 ,又对环境造成严重污染。双鸭山市空心砖厂引进法国先进技术与设备 ,于一九九一年建成国内第一条具有国际先进水平的煤矸石空心砖生产线。所用原料全部采用选煤厂废弃排放的煤矸石 ,不需外加燃料 ,生产出优质的煤矸石空心砖 (煤矸石烧结多孔砖和空心砖 )。与普通粘土砖厂相比 ,具有节约制砖用地 ,节省烧砖能源 ,实行废物利用 ,治理环境污染等优点 ,成为煤矸石综合利用的示范项…     

鹤壁矿区煤矸石烧制多孔空心砖的研究

分析了鹤壁矿区煤矸石原料的基本特性 ,介绍了该矿区煤矸石烧制多孔空心砖的工业性试验过程 ,针对试验中存在的问题 ,提出了有效的技术措施和工业生产的基本工艺参数     

煤矸石淤泥空心砖生产工艺及管理

介绍了用于生产空心砖的煤矸石及湖泊淤泥的物理、化学性能;论述了原料处理中煤矸石的储存、风化、粉碎、筛分、除杂工艺及煤矸石与淤泥的配合比、混合料的掺配、坯体成型、干燥、码窑与焙烧等工艺技术及管理要点。     

煤矸石烧结砖生产技术的现状

主要介绍了煤矸石烧结空心砖的原料性能、生产工艺、着重介绍了几种不同的破碎设备和陈化形式，以及干燥烧成的关键。对实际生产具有一定的指导意义。     

义安煤矿生产出煤矸石免烧空心砖

义安煤矿生产出煤矸石免烧空心砖徐州义安煤矿采用据徐州市新型墙体材料科学研究所开发的“煤矸石免烧空心砖”技术，成功地生产出“煤矸石免烧空心砖”产品，并经徐州市有关部门组织的鉴定会议鉴定通过。该矿利用自燃煤矸石生产的非烧结空心砖，尺寸为２４０×１１５×１...     

煤矸石硬塑成型空心砖厂技术与经济分析

结合某煤矸石空心砖厂的设计方案 ,论述了煤矸石的物理化学性能、空心砖的性能指标、制砖的工艺流程和砖厂的技术经济分析。     

煤矸石制备絮凝剂研究进展

煤矸石制备的絮凝剂正逐步得到应用,近年来的研究重点主要集中在制备复合型无机高分子絮凝剂。综述了当前以煤矸石为原料制备絮凝剂的研究状况,着重阐述了制备流程,展望了煤矸石制备絮凝剂的应用前景。     

轮窑内燃烧砖与砖坯人工干燥工艺

以煤矸石、粉煤灰、粘土为原料,生产实心砖或空心砖,一座二十门上烟道预热利用轮窑(一部火),五道干燥室,全长65米(利用窑内余热干燥砖坯)。每日可生产成品砖6~8万块,年总生产量2000~2500万块。按万块砖销售价1600元计算,1年可创纯利润120万元。本文简略介绍本厂关于原料搭配、烘干、焙烧等工艺方面的做法。随着全国禁止粘土实心砖工作的深入发展,粘土可用页岩等其它原料代替。本文仍以粘土为原料对干燥工艺进行叙述。1原料合理搭配冬季备好塑性粘土,供来年生产用。煤矸石经筛式粉碎机破碎,最大粒度3.5mm。砖坯原料配比为:煤矸石30%,粉煤灰10…     

Recycling of granite waste and burnt coal cinder for the preparation of sintered permeable bricks

The sintered permeable brick was prepared using granite waste and burnt coal cinder (BCC) as raw materials to ensure the utmost utilization of both solid wastes. The effect of various parameters, such as the proportion of raw materials, granite particle size and sintering temperatures on the properties of the permeable brick were studied, and the relevant sintering mechanism was clarified. The differential scanning calorimetry curves indicate that the mixture of granite waste and BCC begins to melt at a lower temperature, which is lower than the temperature for melting them alone, so the use of them to prepare sintered bricks will reduce energy consumption. The optimal conditions for the preparation of the permeable bricks were determined as the mass ratio of granite waste to BCC of 80: 20, sintering temperature of 1150–1175°C, and granite particle size of .9–1.25 mm. It was found that the permeability and the flexural strength of the samples can reach 3.41 × 10 ⁻² cm/s and 4.2 MPa, respectively, which both exceed the requirements specified in the national standard of China.     

良庄煤矿发展煤炭加工与综合利用的有效途径

良庄煤矿在发展煤炭加工与综合利用方面探索了一些有效途径 ,在洗选加工方面采用重介选煤工艺代替跳汰选 ,运行效果良好 ,利用浮选精煤制备水煤浆及燃煤锅炉改烧水煤浆、压滤煤泥发电及矸石制砖等方面均有显著的经济和环保效益     

煤矸石砖隧道窑余热回收利用研究

根据焦作煤业(集团)煤矸石隧道窑的结构,模拟计算出隧道窑内辐射热能分布情况,确定在窑体冷却段上方安装1台余热回收利用蒸气装置,经分析,该装置具有较好的安全性,在煤矸石砖隧道窑生产线中的应用可获得较好的经济、社会和环境效益。     

Sintering characteristics and electrical resistivity of refuse ashes

The inorganic residues left after burning samples of paper and sorted domestic refuse in air were examined, and laboratory experiments were carried out to determine their sintering temperatures and electrical resistivity. Paper ash had a higher sintering temperature than that of a typical coal ash, but the ash from refuse had a comparatively low sintering temperature. However, a 3:1 mixture of coal ash and refuse ash had sintering and slagging characteristics close to those of typical coal ashes. The ash from both paper and sorted refuse had high resistivities, and this could lead to poor collection efficiencies in electrical precipitators.     

从煤矸石中提取氧化铝和二氧化硅的新工艺

通过对利用煤矸石提取氧化铝和二氧化硅工艺过程的研究,提出了解决"煤矸石—纯碱"烧结过程中产生的铝硅酸钠问题的技术方案,揭示了"C—JSTK"技术处理煤矸石的反应历程及提高氧化铝和二氧化硅提取率、降低碱损失率的影响因素,分析了废气、废液循环利用和废热分级利用的可能性,实现了资源的合理利用,达到了清洁生产的目的。     

发展资源综合利用 打造循环经济产业链

枣庄矿业集团柴里煤矿根据自身的优势,大力发展循环经济产业链,利用煤矸石、煤泥、焦炉煤气发电,产生的炉渣、粉煤灰用于制砖和水泥等建材,对矿井水净化处理后重复利用,将电厂余热用于企业或居民供暖,并发展水产养殖业,取得了明显的经济效益和社会效益。     

Sintering characteristics of low-rank coal ashes

The electrical resistance and compressive strength were measured to gain a better understanding of the sintering characteristics of low-rank coal ashes involved in deposit formation in combustion systems. Low-rank coal ashes were prepared by the standard ASTM ashing procedures at 750°C and then separated into three different particle size fractions. The sinter point determined by the electrical resistance method decreased with decreasing particle size at three different particle size fractions of each coal ash. The compressive strength lest was made as a function of temperature in the range 750–950°C. At a given sintering temperature, strength of the sintered ash was inversely proportional to particle size. For any given particle size of each coal ash, the strength increased with increasing sintering temperature. X-ray diffraction of the sintered coal ashes showed that, as sintering temperature increased, there was an inverse relationship between sinter strength and the amount of anhydrite in the sintered ash, and a direct relationship between strength and the amount of hauyne.     

我国煤矸石制砖现状及创新发展思考

论述了我国煤矸石制砖的现状及存在的问题 ;对煤矸石制砖的发展方向 (如原料的选择、先进设备及工艺的采用等 )提出了建设性意见 ;指出了目前应淘汰的落后工艺和设备。