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Table of Content

10 April 2014, Volume 39 Issue 2

Crucial technology and development direction of shafe lime kiln with mixing fuel

Li Xin)Yang Yang)
2014, 39(2):  1-4. 
Abstract ( 310 )  
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This paper reviewed the construction situation, technical progress and features of crucial technology of the shafe lime kiln with mixing fuel,and propoesd technical choices for kiln construction and major measures for high quality,low cost and high production.

Analysis on viscous slag of walking beam and column in hot rolling furnace
Xu Guotao Li Jizheng Zhang Honglei He Mingsheng
2014, 39(2):  5-7. 
Abstract ( 342 )  
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This paper analyzed the cause of viscous slag formation of walking beam and column in hot rolling furnace,which mainly results form the low refractoriness under load(RUL)and large deformation. Based on analysis of erosion structure,the dissolution of alumina into bonding slag phases of furnace lining increases the slag viscidity,which may give rise to seriously hang slag and hinder normal production. Among refractory control standards,RUL and other parameters to control the quality of furnace lining are not stipulated.

Practice of dolomite calcination for No.4 Maerz kiln of Liusteel
Li Lei) Min Qingfeng)
2014, 39(2):  8-10. 
Abstract ( 431 )  
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The new No.4 Maerz kiln has produced qualified dolomite with LDG as fuel under innovated technologies.In view of brittleness of dolomite,the productivity of No.4 Maerz kiln and each control coefficient in production,a reasonable operating system is produced for stable products quality.

Analysis of the cracks on sliding plate and its improvements
Li Yongli Li Yanming Li Wei Tong Zeming
2014, 39(2):  11-13. 
Abstract ( 443 )  
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In metallurgical industry,sliding nozzle becomes more and more important as a critical equipment in continuous casting process.However,the cracks interrupts continuous use of the sliding plate.This paper analyzed the formation and harmful aspects of the cracks and proposed a solution to minimize the cracks.These improvements raise the service life of the sliding plate.

Innovation on metallic hose of spray gun in Maerz kiln

Hu Xianyang Zhang Yinbin Fu Zhiqun
2014, 39(2):  14-15. 
Abstract ( 275 )  
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In view of the phenomenon of gas leakage in production of Maerz kiln in roast plant,this paper analyzed the major causes of sand holes and cracks on metallic hose and introduced a repalcement of the metallic hose by ripple compensator fixed with hard tubes which is proved more stable and safer in production.

Influence of calcining process on activity of light-burned lime
Zhang Bin Yin Hongfeng
2014, 39(2):  16-19. 
Abstract ( 218 )  
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Influence of calcining process on activities of three kinds of limestones was studied through by calcining test and scanning electronic microscope.The result shows that the major factors affecting the activity of light-burned lime includied calcining temperature,soaking time,particle size and microstructure of raw material.

Research on specific heat of iron tailings based refractories
Su Qi Zhang Junli Liu Jianjia Liu Chuanchuan
2014, 39(2):  20-23. 
Abstract ( 245 )  
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In view of environment polution and resources reusing of iron tailing,this paper proposed a method of synthetized forsterite refractory by adding caustic-burned magnesia powder into the iron tailing.In laboratory, two kinds of synthetic aggregates are prepared with different proportions and determined by DSC method.The result shows this new refractory has higher specific heat value and larger capacity for heat storage.

Improvement and optimization of 110t ladle sliding plate and its machine
Yan Shikuan Lu Zhichao
2014, 39(2):  24-26. 
Abstract ( 275 )  
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The longevity methods of ladle sliding plates were proposed from choice of materials,slide volume,slide shape and sliding machine,etc.The slip rate of the improved sliding plat reaches 100%,the service life of the improved sliding plat reaches 4 heats and basically meets the requirements of the production.

Refractory patent information and technical innovation
Jin Peng Zhang Lixin Hu Limin
2014, 39(2):  27-29. 
Abstract ( 280 )  
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This paper discussed the pioneering, guiding and guaranteeing effects of patent information on enterprise technical innovation.Taking patent informations of refractory free chrome for RH furnace refinement as example,the patent information combined its advantages with technical innovation and transformed technical innovation into productivity to maximize the economic benefit.