新建煤气隧道窑的烘窑方法

重点介绍了一条新建93m煤气隧道窑的烘窑方法，介绍了该烘窑方法的优点及其烘烤的操作步骤和要点。     

80m长隧道窑烘窑操作方法

介绍了马钢耐火材料公司80m长小断面隧道窑的烘窑过程和烘窑要点,指出要做好前期准备工作,准确控制温度和压力,确保烘窑过程的顺利进行。     

关于隧道窑倒窑、窑车轴承坏死问题的答疑

<正>问:佛山某陶瓷色料厂,生产窑炉为隧道窑,窑长28m,使用重油为燃料,近期生产棕色产品,烧成温度1150℃,50min推一次。最近经常出现倒窑和窑车轴承坏死导致堵窑事故。     

大断面多孔窑

我厂于1989年和1990年自行设计,将两条小断面12孔窑,改造成大断面12孔窑。窑炉投产后运行一直正常,产量比原来增加1.5倍。能耗比原来下降44.8％,产品质量及生产效率等指标均比原来有不同程度的提高。这种新型多孔窑的结构与传统多孔窑相似,只是孔道断面比传统多孔窑的大,孔道内并排放置2个齿钵,故称大断面多孔窑。 1 窑炉结构简介 1.1 窑长 有效长15米,其中加热带9米,占总长的60％,冷却带长6米,占总长的40％。 1.2 窑宽 窑室断面宽2.76米,随孔道排列自然分布5条火道,从中心到两侧火道宽度分别为180m/m,160m/m和130m/m。     

隧道窑烧成带窑顶节能经济效益分析

对洛耐厂吊顶结构的１８９ｍ、１５６ｍ隧道窑烧成带窑顶外表面温度进行了测试，结果表明平均温度高达３０Ｏ多度，设定采取保温技术后降至１５０℃，两条窑仅此一项每年可获节能经济效益１８２．７３万元。由此可见，加大管理与科技节能力度，大有工作可做。     

双窑道燃气节能轻体隧道窑的设计与应用

实用双窑道燃气节能轻体隧道窑属于一种连续式燃气窑炉 ,窑炉上下两窑道重叠 ,下窑道为明焰窑车式 ,上通道为半马弗推板窑。下窑车式隧道窑使用清洁的气体燃料明焰裸烧产品 ,上半马弗推板窑利用下窑道的烟气和余热焙烧产品 ,且上下排热孔相互贯通     

HGH红外线性扫描仪在天瑞12000t/d生产线上的应用

<正>天瑞集团河南荥阳水泥有限公司12000t/d熟料生产线于2009年完成调试并顺利投产,该生产线是世界单产最大的一条生产线。该厂采用了φ6.2m×92m长窑的悬浮预热器窑布局,窑的三次风管支架沿窑的两侧布置。回转窑稳定、可靠地运行与公司的利益紧密相连。窑筒体要耐得住     

窑法磷酸开发战略与工业化技术路线

我国窑法磷酸开发已进入工业化试验阶段,回转窑法与隧道窑法两条技术路线均已取得阶段性成果。根据窑法磷酸的工艺与生产特点,提出了在工业化实施过程中对磷矿的选择、技术路线、产品定位等问题的看法,为窑法磷酸的发展决策提供参考意见。     

我国窑法磷酸研究的新进展

本文简要地回顾了国外窑法磷酸研究情况,针对国外窑法磷酸工艺设备选型上的错误,认为窑法磷酸应改用隧道窑生产才会成功。文中介绍了国内隧道窑法磷酸研究取得的进展。隧道窑法不仅还原率超过回转窑法,且基本上解决了回转窑所无法解决的一些技术问题。作者呼吁请有关方面给予重视与支持,以促使这项对我国磷肥工业发展至关重要的新技木能首先且早日在我国工业化。     

陶瓷企业在正常生产时和停窑检修时对隧道窑应怎样进行维护与保养？

答：由于市场竞争激烈，许多企业只是一味地追求产量来求生存，忽略了窑体的保养。就如1999年年底某集团公司突然一条81m的隧道窑烧成带顶棚大面积倒塌，所幸没有伤人。事后分析是烧成带加固立柱工字钢顶端拉杆松脱。如果是对设备等维护好的企业，根本就不可能会出现如此损失惨重的事故。下面就隧道窑的维护和保养做简单介绍。     

浅谈石灰竖窑技术改造

老式机械化石灰竖窑装备落后,其生产出的石灰质量低,已满足不了冶炼优质钢种生产的需求。针对这种情况．马钢股份公司第三钢轧总厂对该种窑进行了技术改造。改造后的石灰竖窑能生产出优质的活性石灰,采用活性石灰炼钢,可缩短冶炼周期,降低吨钢石灰消耗。     

Performance Comparison of Two Solar Kiln Designs for Wood Drying Using a Numerical Simulation

The predicted performances of the two different timber-drying solar kiln designs (Oxford and Boral kilns) have been compared by using the climatic and geographical conditions of Brisbane (27.46°S) in Australia. The dimensions of the original Boral kiln have been scaled down in order to compare the kilns’ performances on the basis of same load capacity. The comparison was made in terms of the key performance indicators, including drying rates, drying qualities (i.e., the level of strains developed within the timber boards during drying), energy gains, and major elements of the energy losses (i.e., the convection and radiation losses) while drying timber from an average initial moisture content of 53% (dry basis) to a final moisture content of 15% (dry basis) in both kilns. The relative performances for the two designs were discussed in more detail by using the typical climatic conditions (spring season 2013), when the days and nights are of approximately equal length. Finally, an analysis of the seasonal effects on the kiln performances was also carried out in this article. More effective orientation of the solar absorbers with respect to sun, together with faster heat transfer rates between the circulating air and the timber stack for the Oxford design, were likely to give consistently better predicted performance for the Oxford design than for the Boral kiln throughout the year.     

USE OF SMALL QUICK-ACTING KILNS FOR INSTRUCTION AND RESEARCH1

Considerable experience with small, quick-acting kilns in the laboratory, both for instruction and research, has indicated the distinct advantages of this type of kiln. By the use of an insulating refractory the mass of the kiln can be reduced to less than one-tenth of that usually employed, which makes rapid heating possible without great expenditure of fuel. Two types of kilns are described which have given good service for a considerable length of time. Temperatures as high as 2600°F can be obtained with atmospheric burners and temperatures up to 3000°F with blast burners.     

尿素＃3皮带机改造总结

将约300m长的＃3皮带机在空间高2.2m,宽2.8m的栈桥内改造了两条串联的皮带机,要中国增加一个油浸式电动滚筒,连接外进行土建改造。改造后解决了＃3皮带机跑偏难纠,检修困难的难题。     

THE INFLUENCE OF KILN GEOMETRY ON FLOW MALDISTRIBUTION ACROSS TIMBER STACKS IN KILNS

A one-dimensional mathematical model is evaluated for flow through a timber-drying kiln. This model is used to develop recommendations for the design of the plenum chambers on either side of the timber stack. The variation of the vertical air velocity was explored for a sticker spacing of 20 mm and a board thickness of 50 mm. When the width of the plenum chambers is at least equal to the sum of the thickness of the stickers, flow maldistribution is substantially reduced in single-track kilns. The width of the plenum chambers of double-track kilns may be reduced to three-quarters of the sum of the thickness of the stickers, because the increase in timber-stack resistance to airflow mitigates the effect of pressure variations down the length of the plenum chambers.     

THE HEAT-BALANCE STUDY OF CERAMIC KILNS1

The elements of the heat-balance study and calculation of the thermal efficiency of ceramic kilns are summarized, and an outline of a heat-balance method is given. The CO₂ in the flue gases of the kilns studied was measured automatically and continuously by an electric CO₂ meter making use of the thermal conductivity method, and some of the resulting CO₂percentage curves are given and interpreted. A complete heat-balance of a 30-foot round downdraft facebrick kiln fired with wood is given, together with various data and conclusions on the use of wood in firing ceramic kilns. A complete heat-balance of a Hoffman continuous coal fired kiln is given, together with temperature-gradient curves and other data of this and two other Hoffman kilns.     

THE INFLUENCE OF KILN GEOMETRY ON FLOW MALDISTRIBUTION ACROSS TIMBER STACKS IN KILNS

ABSTRACT

A one-dimensional mathematical model is evaluated for flow through a timber-drying kiln. This model is used to develop recommendations for the design of the plenum chambers on either side of the timber stack. The variation of the vertical air velocity was explored for a sticker spacing of 20 mm and a board thickness of 50 mm. When the width of the plenum chambers is at least equal to the sum of the thickness of the stickers, flow maldistribution is substantially reduced in single-track kilns. The width of the plenum chambers of double-track kilns may be reduced to three-quarters of the sum of the thickness of the stickers, because the increase in timber-stack resistance to airflow mitigates the effect of pressure variations down the length of the plenum chambers.     

对潮州“龙窑”的探讨

龙窑是优良古窑种之一,潮州龙窑在潮州陶瓷文化占据很重要的位置,并在潮州地区广泛分布。其传统的生产工艺,特别是烧成过程的一些特性,是历代陶瓷窑炉技术改造的基础,可以说,潮州历代陶瓷业的发展,潮州龙窑功不可没。