全氧燃烧玻璃熔窑温度检测控制

全氧燃烧玻璃熔窑是今后发展趋势.本文对全氧燃烧熔窑熔化温度的几种检测方案进行了分析,并给出了典型的全氧燃烧浮法玻璃窑炉熔化温度检测控制流程图.也可供普通玻璃窑炉参考.     

玻璃窑炉局部富氧燃烧的研究

本文建立了燃煤玻璃马蹄焰窑炉局部富氧燃烧与不采用富氧燃烧数学模型,对不同富氧空气下燃烧温度的影响进行了计算机模拟,对模拟结果进行了回归分析,对比了采用富氧燃烧与不采用富氧燃烧对节能效果的影响,分析了在小炉底板上面通富氧空气产生的效果.对燃煤玻璃马蹄焰窑炉富氧燃烧提出了建设性的意见.     

光伏玻璃全氧窑炉的结构分析和运行体会

全氧窑炉的燃烧原理决定了其在环保、节能等方面具有明显的优势。全氧窑炉无蓄热室,在选材和结构设计上与空气窑炉有很多不同。通过二者结构对比、分析,结合近几年全氧窑炉运行的实际情况,提出全氧窑炉在工艺管理和运行维护等方面的改进设想。     

富氧燃烧在陶瓷窑炉中的应用及经济效益分析

当前富氧燃烧技术正在逐步发展,其应用的规模和范围正在不断扩大,本文探讨了富氧燃烧的节能特性及其对环境和陶瓷窑炉结构的影响,对富氧燃烧技术在陶瓷窑炉的应用进行经济效益分析,最后还就发展趋势和有待进一步研究的问题进行了分析。     

全氧光伏玻璃窑炉维护及保全的措施

全氧燃烧的窑炉结构与空气燃烧窑炉有一定的差异,这种差异对窑炉的运行和使用起着重要的作用。运用全氧燃烧窑炉生产光伏玻璃,窑炉的侵蚀与空气燃烧的窑炉相比又有较大的不同。根据250 t/d全氧光伏玻璃窑炉的运行情况和侵蚀特点,提出延长全氧窑炉寿命的措施和办法,为窑炉安全运行提供参考。     

全氧燃烧玻璃窑炉的寿命浅析

通过对国内外部分全氧燃烧玻璃窑炉的寿命统计,非正常停炉和常见故障等问题分析,找出影响窑炉寿命的因素,提出要以规范化、科学化、系统化的思维,通过新材料、新技术、新工艺的运用有效延长全氧燃烧玻璃窑炉的寿命,对目前全氧燃烧窑炉的建设、推广应用有积极的参考价值。     

单元玻璃窑炉富氧燃烧空间的数值模拟研究

本文建立了单元玻璃窑炉富氧燃烧空间三维数学模型,其中气相流动模型由质量守恒定律、动量守恒定律、能量守恒定律和标准k-ε湍流模型组成,化学反应模型使用有限速率/涡耗散模型,辐射传热模型使用离散坐标模型.以年产2万吨玻璃纤维的熔窑为对象,利用Fluent软件对富氧燃烧空间内气体的流动状况和温度分布进行数值模拟.通过模拟结果与现场实测数据进行比较可以看出,该数学模型能够比较客观地反映单元玻璃窑炉富氧燃烧空间的温度场和速度场的分布规律.在此基础上,对喷枪的布置加以调整和改进后得到了更佳的模拟效果,还说明该数学模型对窑炉富氧燃烧在生产过程的研究和应用也有一定的指导作用.     

陶瓷窑炉富氧燃烧的研究

讨论建立了陶瓷窑炉燃烧零维燃烧数学模型,研究陶瓷窑炉富氧燃烧技术,模拟了一次助燃风富氧燃烧对节能的影响以及产生的效果。从而对燃气陶瓷窑炉富氧燃烧提出了建设性的意见。     

250 t/d全氧超白玻璃熔窑烟气计算及讨论

对我厂天然气全氧窑炉的烟气量进行了相关讨论和计算,并对天然气全氧窑炉的烟道阻力和烟囱抽力进行了计算和对比。     

全氧燃烧玻璃窑炉耐火材料的选择与应用

全氧燃烧技术是采用"氧气+燃料"代替"空气+燃料"的燃烧模式。采用全氧燃烧技术可以实现玻璃熔窑的节能减排,提高熔化能力和熔化质量。通过分析全氧燃烧技术特点,并对全氧燃烧玻璃窑炉因耐火材料原因出现的窑炉问题进行讨论,提出全氧燃烧玻璃熔窑上部空间的耐火材料选择和应用布置方案。针对近年来发展的新型耐火材料进行技术可行性探讨,提出吨玻璃耐火材料消耗量的概念,并对影响吨玻璃耐材消耗量的主要因素进行归纳,总结了全氧燃烧玻璃熔窑延长窑炉寿命、降低耐材使用量的主要方法。     

预分解窑煅烧高抗硫酸盐硅酸盐水泥熟料的 生产体会

为了满足高抗硫酸盐硅酸盐水泥的市场需求,通过筛选优质的原燃材料和精心设计配料方案,得以在1 000 t/d生产线上批量生产。其生产控制的关键主要掌握其熟料的技术特点,并在实际生产中进行工艺参数的调整,且需加强回转窑的煅烧控制。对生产出的高抗硫酸盐硅酸盐水泥熟料性能分析,已证明了采用预分解窑煅烧优质的高抗硫酸盐硅酸盐水泥熟料是完全可行的。     

电石渣配料生产水泥熟料新工艺的开发与应用

电石渣作为生产水泥熟料的原料之一是综合利用电石渣的重要途径.本文主要介绍了电石渣配料及采用"干磨干烧"新工艺生产新型干法水泥熟料的工业化生产线.     

Data-driven research on chemical features of Jingdezhen and Longquan celadon by energy dispersive X-ray fluorescence

The energy dispersive X-ray fluorescence (EDXRF) is used to determine the chemical composition of celadon body and glaze in Longquan kiln (at Dayao County) and Jingdezhen kiln. Forty typical shards in four cultural eras were selected to investigate the raw materials and firing technology. Random forests, a relatively new statistical technique, has been adopted to identify chemical elements that are strongest explanatory variables to classify samples into different cultural eras and kilns. The results indicated that the contents of Na₂O, Fe₂O₃, TiO₂, SiO₂ and CaO vary in celadon bodies from Longquan and Jingdezhen, which implies that local clay was used to manufacture celadon bodies in Jingdezhen kiln. By comparing the chemical composition in glaze, we find that the chemical elements and firing technology of Jingdezhen kiln are very similar to those in Longquan kiln, especially for Ming dynasty. This study reveals the inheritance between Jingdezhen kiln and Longquan kiln, and explains the differences between two kilns.     

Drying timber in a solar kiln using an intermittent drying schedule of conventional laboratory kiln

The purpose of this study was to apply an intermittent drying schedule developed from a conventional kiln to a solar kiln. Implementing this experiment could help better understand the oscillation of the temperature inside a solar kiln and timber quality during drying progress. The theoretical recharge and discharge curves were used to predict the temperature inside the solar kiln using experimental data obtained previously using a solar kiln. The surface and internal checks were measured using ImageJ freeware, and the development of the Moisture Content (MC) profile was assessed by coring and slicing method for the Eucalyptus delegatensis boards during drying. The results showed that the recharge and discharge model can predict the temperature with less than 2?°C error from the experimental data in the solar kiln. The total drying time to 12% MC was 87?days for the solar kiln. The drying rate was equivalent to the conventional kiln decreasing at an average rate of 0.2% per day. The surface check formation was found when the MC gradient between the core and the case of the board was greater than 42% at 9?days of drying in the solar kiln and conventional laboratory kiln. The applied drying schedule used in the solar kiln was successful and offered similar drying time. However, the oscillation of temperature in the intermittent drying will require further improvement to get closer conditions in a solar kiln.     

熔剂成份的釉胎比值对南方名窑瓷的区分研究

本文以熔剂成分的釉与胎比值全新分析方法，对我国南方古名窑瓷（越窑、德化窑和景德镇窑）进行了区分研究，结果表明，该新方法简明、有效：德化窑瓷在釉与胎比值R2O（釉）／R2O（胎）＝1．30以内；景德镇窑瓷在RO（釉）／RO（胎）＝14．0以下；而越窑瓷在0．8ROG／B）＋27R2O（G／B）－45．5＝0.RO（G／B）=13和R2O（G／B）=0．5所构成的直角三角形区域中，该三角形区把德化窑、景德镇窑截然分开。     

镁矿砂回转窑窑尾烟气SDS干法脱硫工艺的设计应用

针对镁矿砂回转窑窑尾烟气污染环境的情况,阐述了碳酸氢钠干粉喷射(SDS)脱硫技术原理、实际应用与优缺点,并在实际项目中探究了镁矿砂回转窑烟气二氧化硫的去除效果。结果表明,在实际运行中采用SDS干法脱硫工艺处理后,镁矿砂回转窑烟气能够达到超低排放要求,ρ(SO2)≤35mg/m^3。项目投运后所产生的脱硫副产物主要成分为Na2SO3,可将其回收利用作为水泥添加剂辅料。该技术已成功推广应用到其他回转窑、焦炉和水泥窑烟气脱硫项目中,并取得了较好的应用效果。     

Composition comparison of Zhejiang Longquan celadon and its imitation in Dapu kiln of Guangdong in the Ming Dynasty of China (1368–1644 CE) by LA-ICP-MS

Identification of Longquan celadon and its imitation is more and more caught the attention of experts in different fields. In this paper, by using laser ablation- inductively coupled plasma mass spectrometry (LA-ICP-MS) and other analytical methods, body and glaze of samples from Zhejiang Longquan celadon and its imitation in Dapu kiln of Guangdong in the Ming Dynasty of China were determined. Our research reveals that (1) the celadon bodies from the Dapu kiln contain less Al₂O₃, Mo, V, Cr and Ni, and more SiO₂ content than those of the Longquan kiln; (2) the celadon glazes from both the Longquan and Dapu kilns show higher content of CaO, Al₂O₃, Ba, Sr, P₂O₅ and MnO than the corresponding bodies; and (3) both the celadon bodies and glazes from the Dapu kiln have higher ΣREE and in particular significantly negative Ce anomalies, distinctly different from those from Longquan kiln. These results would not only provide a good basis to identify the Longquan celadon and its imitation, and even to protract the global trade route in ancient time, but also be beneficial to better understanding the recovery and transmission of Longquan celadon manufacturing technology.     

利用“外燃式高温煅烧碳酸盐矿物质旋窑”实现窑尾废气CO2减排及脱硫的技术

随着以CO2为首的温室气体排放量急剧增加，全球气候变暖等环境问题日益严峻。在此背景下，分析了目前水泥窑减排CO2的技术措施及应用情况，介绍了外燃式高温煅烧碳酸盐矿物质旋窑技术，分析了该技术及相关装备的研究开发过程。重点介绍了利用“外燃式高温煅烧碳酸盐矿物质旋窑”实现窑尾废气CO2减排及脱硫的技术方案及原理，该技术虽还没有在水泥行业得以实际生产应用，但可在水泥窑减排CO2方面提供有益的参考。     

A Short Communication on Refractories as Kiln Lining along Various Thermal Zones in Pre-calcining Cement Rotary Kiln

Modern cement rotary kiln is often large in size while rotating in high speed. Thermal condition within a rotary kiln is rather complex,exerting severe thermal and chemical attack on refractory of its kiln lining. In the present paper,the cause that leads to refractory failure was analyzed; requirements for refractory to overcome such failure was discussed. Composites and properties of different refractories most often used as kiln lining were assessed,including magnesia-chrome bricks,magnesia spinel bricks, dolomite bricks, silicon carbide mullite bricks and castables etc. Recommendation was made for refractories with suitable composites and properties to be used as kiln lining in each specific zone to best counteract the severe thermal conditions. A cost-effective configuration was presented to assemble kiln lining for rotary kiln's different zones in line with the regulation at JC/T 2196-2013 "Specifications of refractory for cement rotary kiln". Chromite-free refractories with property of high endurance to thermal attack and corrosion are required to be used in modern Pre-calcining cement rotary kilns.     

热膨胀法判定建窑黑瓷烧成温度的应用研究

以热膨胀仪判定建窑黑瓷烧成温度的研究为例,综合运用多种测试方法对建窑黑瓷标本进行了系统研究,探讨如何从建窑黑瓷胎体重烧热膨胀曲线中筛选有效转折点的问题及其转折点的形成原因。研究表明:(1)建窑黑瓷胎体重烧热膨胀曲线上有三个转折点,分别为收缩转折点、膨胀转折点和急剧收缩点。其中第一个收缩转折点是判定其古代烧成温度的关键点。(2)建窑黑瓷胎体重烧热膨胀曲线上膨胀转折点和急剧收缩点的形成皆与其胎体中大量Fe_2O_3在高温下发生分解反应有关。该研究不仅为热膨胀仪测定建窑黑瓷烧成温度的应用研究提供判定依据,也将为科学认识古陶瓷胎体重烧热膨胀曲线上多个转折点的形成机理提供数据支持。