滚筒筛制造应注意的问题

筛分设备是砖厂生产线上处理原料的一种设备。制砖原料在破碎之前是以大小不等的各种粒度混合在一起的,为了提高原料破碎机械设备的效能,在原料破碎设备之前或之后设置原料筛分机械,以便制砖原料按不同粒度大小分成不同的等级。筛分机械按结构组     

煤矸石制砖主要工艺技术特点

介绍了煤矸石的塑性、粒度、发热量等原料性能以及硫和氧化钙等有害化学成分对其制砖工艺性能的影响,指出多级粉碎、高挤压力成型、快速干燥、超热焙烧是煤矸石制砖的主要工艺技术特点.     

粉煤灰烧结砖原料的处理设备及工艺

分析了粉煤灰制砖原料的处理特点及要求,介绍了几种常用混合增塑设备,即筛式挤出喂料机、轮碾混合机、行星式轮碾混合机和双螺旋筛式喂料机的主要特点,并对粉煤灰制砖原料的处理工艺进行了讨论。     

制砖原料存贮系统

介绍了欧州制砖业常用的几种原料存贮系统及其结构、装卸料方式、功能和主要优缺点,提出了贮料系统设计和建造的基本准则.     

砖瓦添加剂挽救了於潜红砖厂

】介绍了欧州制砖业常用的几种原料存贮系统及其结构、装卸料方式、功能和主要优缺点，提出了贮料系统设计和建造的基本准则。     

煤矸石制砖破碎、焙烧工艺的设备选型

1 原料破碎在生产中的重要性 原料破碎是制砖生产的第一道工序,是制砖生产的基础工作,原料(颗粒级配)关系到砖的成型及外观光洁度;若粒度较粗,则塑性较差、成型难度较大,其成品外观粗糙;若颗粒级配得当,对产品的外观成型都有好处;同时原料热值较低,易产生成品欠火,而热值过高又产生产品过烧;原料产量低,供料不足,不仅影响成型和烧成的产量,而且陈化时间短,塑性较差,也影响产品产量和质量. 目前破碎系统通常采用板式给料机→细碎锤式破碎机→电磁振动筛(滚筒筛)→搅拌机.共四种设备完成整个原料处理过程,然后进入陈化库. (1)细碎锤式破碎机,下料粒度＜ 10mm,筛分后进入下道工序.     

浅谈彩色装饰砖的生产方法

生产彩色装饰砖的方法有十几种,世界各国根据当地制砖粘土的物理化学性能及民俗特点,分别采用市场欢迎的合适方法.我们曾对彩色装饰砖各种生产方法进行了几年的实验室及半工业性试验.结合国内各地原料特点,初步探索了几种简单实用的方法供大家参考.     

供土与供土机械化

本文从制砖供土重要性出发,介绍了如何合理利用土源,合理规划土源,以及利用存土库来提高和改善原料土性能,达到提高产量和质量目的,并就常用的几种机械供土方法的优缺点进行了分析.     

浅谈烧结砖生产线原料处理的重要性

制砖原料的多样化,导致了原料处理工艺的多样化,从原料处理的几个环节,阐述了原料处理的重要性。     

浅谈烧结砖原料处理的重要性

制砖原料的多样化,导致了处理工艺的多样化,本文从原料处理的几个环节,阐述了原料处理的重要性。     

利用煤矸石配淤泥生产平瓦

文章介绍了用于生产节能型绿色平瓦的煤矸石和湖泊淤泥的物化性能、煤矸石的贮存风化和破碎筛分及其与淤泥的配合比、淤泥的采掘与处理、混合料的掺配与搅拌、坯体的成型与干燥、码窑与焙烧等生产工艺及管理要点。     

Fracturing and foreclosure: A study of shale gas development and foreclosure levels in Pennsylvania

Despite the considerable attention hydraulic fracturing of shale has generated around the world, few academic studies to date have examined the potential impacts shale development has had on local housing markets. This study aims to partially fill this void by examining the temporal relationship between shale development and foreclosure levels in Pennsylvania zip codes. The empirical models measure how foreclosure levels change in relation to the number of unconventional gas well permits, drill starts, and well completions for all Pennsylvania zip codes from January 2007 to June 2012. Zip code and quarterly fixed effects are included. The results suggest that past shale development was associated with an increase in foreclosure levels in comparison to neighboring and socioeconomically similar zip codes without shale development. The estimates are larger and more consistent after 2009 and in comparison to neighboring zip codes.     

China organic-rich shale geologic features and special shale gas production issues

The depositional environment of organic-rich shale and the related tectonic evolution in China are rather different from those in North America. In China, organic-rich shale is not only deposited in marine environment, but also in non-marine environment： marine-continental transitional environment and lacustrine environment. Through analyzing large amount of outcrops and well cores, the geologic features of organic-rich shale, including mineral composition, organic matter richness and type, and li- thology stratigraphy, were analyzed, indicating very special characteristics. Meanwhile, the more complex and active tectonic movements in China lead to strong deformation and erosion of organic-rich shale, well-development of fractures and faults, and higher thermal maturity and serious heterogeneity. Co-existence of shale gas, tight sand gas, and coal bed methane （CBM） proposes a new topic： whether it is possible to co-produce these gases to reduce cost. Based on the geologic features, the primary pro- duction issues of shale gas in China were discussed with suggestions.     

煤矸石的物理化学性能与煤矸石烧结砖的产品质量

首先就煤矸石的理化性能对煤矸石烧结砖产品质量的影响进行了探讨,强调为了生产高质量的煤矸石烧结砖,必须有选择的使用煤矸石,应严格控制物料的粉碎粒度,使之具有合理的颗粒级配、塑性指数和发热量,并要剔除有害杂质。     

浅议煤矸石烧结砖厂隧道窑废烟气治理技术

通过对几种典型湿法脱硫技术的比较,结合工程实例,分析了煤矸石烧结砖生产线、隧道窑焙烧过程中废烟气污染物的排放状况,提出了相应的治理措施,以使煤矸石烧结砖厂窑炉废烟气达标排放。     

Impact of Marcellus and Utica shale exploitation on Ohio,Pennsylvania, and West Virginia Regional Economies: A synthetic control analysis

We use the synthetic control method to determine the economic impact of shale exploitation on Ohio, Pennsylvania, and West Virginia. Estimation results are mixed. The shale development decreased the poverty rate and increased the employment growth rate in Pennsylvania and West Virginia in the short run. Top oil and gas producing counties in West Virginia also experienced short-term personal income growth due to fracking. However, most of the positive impacts disappeared a few years after the initial boom periods. The shale development did not bring significant economic benefits to Ohio. Further, shale drilling activities exert a potential long-term negative effect on population growth in all three states.     

页岩灰混凝土的研究

本文研究利用油母页岩沸腾炉发电厂的页岩灰配制混凝土的增强剂,代替混凝土中的部分水泥,发现在不同水灰比的条件下,内掺10%页岩灰增强剂的混凝土,其强度,比不含页岩灰的纯水泥混凝土强度高5%～15%左右.利用页岩灰为载体,配制的载体流化剂,更能有效地控制混凝土的坍落度损失.外掺占水泥量1.5%载体流化剂,更能有效地控制混凝土的坍落度损失,在90min内基本不变.     

页岩烧结砖所用原料的研究

我国页岩资源丰富，量大面广，有发展页岩烧结砖的有利条件，页岩烧结砖的发展方向是：生产高档次、高品位、高附加值的页岩烧结制品。选择页岩烧结的原料时，要注意蒙脱石和石灰石或方解石的含量。蒙脱石含量高，易产生大量裂纹；石灰石或方解石含量高，易产生石灰爆裂。     

页岩陶粒厂优化设计中的几点体会

通过对页岩陶粒厂设计中的体会,介绍了页岩的分类与性质对页岩陶粒的影响和对原料进行试验检测的重要性,阐述了生产规模与回转窑的选型、煤磨系统和成品处理工段的设计体会和设计中采用的降低页岩陶粒热耗的一些措施。     

页岩气开采过程中储藏压力影响因素研究

页岩气的流动是一个跨流态、多尺度的复杂问题,研究其在开采过程中,储层压力的变化规律,对其产能效率具有重要意义。基于连续介质模型、双重介质模型以及离散裂缝模型,建立页岩气流固耦合渗流模型。本文采用COMSOL Multiphysics软件建立页岩气水力压裂开采物理模型并进行求解,并且模拟页岩气开采过程中气体流动。通过改变压裂裂缝参数以及采用不同介质模型,探究页岩储层压力的变化规律。