- Hung Xuecheng (Second design and Research Institute Ministry of machine Building )
The special property of industrial boilers in China and requirements for coal in layer combus- tion are analysed in this paper. Also , to evaluate and introduce the result of special chestnut shaped briquette and briquetting at front boiler are discussed.It is a feasible route for changing the backward situation of run -of-mine coal bulk burning .
1997 04 [Abstract][OnlineView][Download 360k]
- Peng Changsheng (Hangzhou Environmental protection Research Institute) Cai Zhang(China University of Mining and Technology)
Advantage and disadvantage comparison of column and conventional flotationprocess were made through different coal slime separation test. It was confirm that, the sep-aratian results of column flotation are better than conventional flotation in fine slime. At thesame time, the optimum size range of slime for column and conventional flotation is also pro-vided through test.
1997 04 [Abstract][OnlineView][Download 195k]
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1997 04 [Abstract][OnlineView][Download 56k]
- Yang Kang(Tangshan Branch of China Coal Research Institute)
Some of the existing probems of automatic material discharged system in conventional jig are analyzed and technical reform is put forward in this paper.
1997 04 [Abstract][OnlineView][Download 164k]
- Zhang Wang (Antaibao Open Coal Mine, Pingshuo Coal Industrial Corporation)
The desulfurization ability by preparation in several seams of Antaibao coal mine has been studied through a series anlysis including petrographic of coal seam, pyrite contert, form sulfure distribution in defferent density samples and form sulfure distribution at upper sample through 1.6 kg/m3 density floation with 50～0.15 mm coal wick.
1997 04 [Abstract][OnlineView][Download 238k]
- Lu Jie(Tangshan Branch of China Coal Research Institute)
A study on clean coal ash eontent on line return control in jig is introduced in this paper , The sytem opertation effect is analysed and the technical route of this system for development and research continously and application prospect are discussed.
1997 04 [Abstract][OnlineView][Download 162k]
- Xu Xiufeng Zhu Zhenping Gu Yongda Chen Songying (State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences)
CO2-pulsed gasification sndd temperature-programmed desorption(TPD) ex- periments of Xianfeng lignite char loaded with iron salts were carried out . The effect of iron loadings , catalyst precursors and binary catalyst on catalytic activity was studied. X-ray pho- toelectron spectroscopy (XPS) was used to measure the surface concentration of iron on chars The results show the catalytic activity of Fe (NO3)3 is highest among three different precur- sors, then that of FeSO4 is higher than FeCl3. The influencing factors lied in surface concen- tration and chemical forms of iron. From TPD studies , surface oxygen complexes (SOC) formed during gasification process were varified.
1997 04 [Abstract][OnlineView][Download 183k]
- Huang Mujie(Beijing Research Institute of Coal Chemistry,China Coal Research Institute)
The present paper investigates actd probes the catalytic hydrogenation activi- ties and their dominate factors for some natural mineral matters such as concentrate, tailings and wastes residue from metallurgical enterprises. Also the comparisons of catalytic hydro- genation activities between the substance mentioned above and the synthetic FeS2 have been made. The goal is to find out the catalyst resources which suit Chinese direct coal liquefac- tion demonstration plants in near future.
1997 04 [Abstract][OnlineView][Download 212k]
- Liu Ni Cheng Shiqing (Power Engineering Department,Shandong University of Technology ) Zhang Ye (Shandong World Trade Centre)
This Raper introduces the sulfation characteristisa of calcium-based compound desulfrizer. The experiments are carried out by means of a thermogravimetic analyzer (TGA ) . The effect of several factors on calcium utilization ratio has been studied. The ex- periments results show that , additives can improve the sulfation characteristics of CaO in high temperature and to increase the thermal stability of desulfrization products. The opti- mum desulfrization temperature can be moved 100℃ towards high temperature region. The calcium utilization ratio can reach 65% under TGA condition.
1997 04 [Abstract][OnlineView][Download 162k]
- Zhang Lixin Liang Daming Yuan Guojun (Beijing Resarch Institute of Coal Chemistry,China Coal Research Institute ) Du Minghua (Beijing Ressearch Institute and Coal Chemistry ,Central Coal Mining Research Institute)
This paper is concerned with the utilization of Huaibei natural coke. It repre- sents several bench test characteristics of Huaibei natural coke , incluing gasification , combus- tion and briquette. On the basis of test , it gives a feasible routine of utilizing Huaibei natural coke , and its research work will play an important role in efficiently utilizing Chinese natural coke resource.
1997 04 [Abstract][OnlineView][Download 267k]
- Zhang Yinfa (Nanjing Architectural and Civil Engineering Institute)
The hydrodynamic structure of fast bed is discussed in this paper. Distribu- tion regularity and corresponding calculation formula of suspension density at vertical and horizontal direction in the fast bed region were studied. Themain influence factor of hydrody- namic structure in the fast bed region , such ascirculating rate of solid particles , gases veloci- ty etc. are discussed. The result have a certain guiding significant for design and operation of circulatingfluiized bed boiler.
1997 04 [Abstract][OnlineView][Download 240k]
- Zheng Chuankai (Pangzhuang Preparation Plant, Xuzhou Coal Mine Administration )
The research and development of CWM preparation with flotation tailings and combustion in FBC boiler for power generation in Pangzhuang Preparation Plant are in- troduced in this paper. It is shown that , it is a comprehensive utilization way for flotation tailings and possess a good spreading perspective.
1997 04 [Abstract][OnlineView][Download 148k]
- Tian Keli (Beijing Heavy Electrical Machinery Plant )
Some of the features of hydraulic discharged slag , wet removal dust and an ash/water seperator equipment for administration of ash slag water are introduced in this pa- per. Also the function , erection and remake method of equipment are discussed.
1997 04 [Abstract][OnlineView][Download 170k]
- Hu Wenrong (Shandong Institute of Mining and Technology) Han Jinfu (Environmental Protection Center,Shandong Yanzhou Mineral Industry Corporation )
The reason of high concentration of halogenated hydrocarbon (carbon tetra- chloride and trihalomethane ) in chlorinated mining dranaige is discussed. The method of boiling-aeration , absorption , chemical oxidation and ultrasonic cavitation to remove the halogenated hydrocarbon in water is described. The effect method to prevent halogenated hy- drocarbon from presenting in chlorinated mining dranaige is to remove halogenated hydrocar- bon precursors from coal mining dranaige by sonolysis and ozone.
1997 04 [Abstract][OnlineView][Download 165k]
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1997 04 [Abstract][OnlineView][Download 160k]
1997 04 [Abstract][OnlineView][Download 73k]
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1997 04 [Abstract][OnlineView][Download 73k]
1997 04 [Abstract][OnlineView][Download 73k]
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1997 04 [Abstract][OnlineView][Download 64k]
1997 04 [Abstract][OnlineView][Download 64k]
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1997 04 [Abstract][OnlineView][Download 157k]
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