Alkalis in blast furnaces
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Alkalis in blast furnaces proceedings. by Symposium on Alkalis in Blast Furnaces-State of the Art Hamilton, Ont. 1973.

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Published by McMaster University] in [Hamilton, Ont .
Written in English


  • Blast furnaces -- Congresses,
  • Alkalies -- Congresses

Book details:

Edition Notes

SeriesMcMaster symposium on iron and steelmaking -- no. 1
ContributionsStandish, N., Lu, W.-K. 1933-, McMaster University. Dept. of Metallurgy and Materials Science
LC ClassificationsTN713 S93 1973
The Physical Object
Pagination1 v. (various pagings)
ID Numbers
Open LibraryOL18685676M

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  Most of the alkalis enter the blast furnaces with the sinter (32–58%), the coke ash (21–33%), and pellets made at the SSGPO (16–37%). The contribution of the other components of the furnace charge is negligible (–% of the load) due to the small amounts of these materials that are used in the by: 5. alkali control in the blast furnace. This was done by investigating if coke with a modified ash composition contributed to a higher capacity of binding alkali in stable phases, which can be drained via the slag. This would decrease the recirculation of alkali in the blast furnace File Size: 5MB. BLAST FURNACE ALKALI MANAGING. Alkali input and output is usually ignored by most Blast Furnace operators. Symptoms of Alkali The importance of Alkali is realized only when problems like scaffolding, scabs, leading to furnace irregularities like hanging and slipping occur. In normal blast furnace operations, when the coke carbon starts reacting with CO2 resulting in the solution reaction at. blast furnace processes. At the same time, they signifi-cantly affect the costs of the entire blast furnace proc-ess. Alkalis cause higher reactivity of coke, premature softening of ore charge, decomposition of sinter, swell-ing of pellets, they are involved in the formation of de-posits on the refractory lining of blast furnaces and they.

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: Chapters: Kiln, Solar furnace, Blast furnace, Cement kiln, List of preserved historic blast furnaces, Electric arc furnace, Chimney, Flue gas stack, Blowing house, Bloomery, Cupola furnace, Reverberatory furnace, Open hearth furnace, Trompe, ABP Induction.   Effect of Alkalis on Ironmaking Process in a Blast Furnace. One of the main objectives during the operation of a blast furnace (BF) is to maximize the production of hot metal (HM) of the desired chemical composition at the minimum costs. This needs a high quality of a raw material base and a regular, smooth operation of the blast furnace. The Alkali metals enter the blast furnace through the raw materials. The alkali in the blast furnace form carbonates, cyanides and silicates at different temperature and heights of the furnace. Describes the principles of the blast furnace process and especially the control of the process. This book focuses on the control of the blast furnace process with respect to thermal control, gas flow control and casthouse operation. It is suitable for students of metallurgy as well as for blast furnace operators and management.

  This paper investigated the stabilization efficacy of alkali-activated ground-granulated blast furnace slag (GGBS) for a marine soft clay, compared with that of portland cement (PC). The influence of activators, including NaOH, Na 2 CO 3, carbide slag (CS), NaOH-CS, Na 2 CO 3-CS, and Na 2 SO 4-CS, on the stabilization efficacy was investigated. The blast furnace process is primarily used in the carbothermic reduction of oxides, such as iron, zinc, and lead. Most of the iron ore bodies commercially explored consist of iron oxides. Consequently, rich iron ore and/or iron oxide pellets formed from concentrate can be added directly to a blast furnace. emphasis was laid on the behaviors of alkalis and zinc and on the wear mechanism of the refractories at the tuyere zone. II. Operation Data and Refractories of the Blast Furnace In November , the Amagasaki No. 1 Blast Furnace (volume: m3, hearth diameter: m). @article{osti_, title = {Alkalies, texture of carbon and the degradation of coke in blast furnaces}, author = {Lu, W.K. and Samaan, G. and Uribe, M.}, abstractNote = {Metallurgical coke consists of carbon grains of a variety of textures (i.e. isotropic, mosaic, fibrous, etc.) ash particles and pores. The most important mechanisms of coke degradation, as investigated in laboratories as.