Salvaging of Large Bell of D Furnace of TATA Steel

2015 ◽  
Vol 48 (2) ◽  
pp. 76
Author(s):  
Dip Narayan Koner ◽  
Sanjay Kumar Jha
Keyword(s):  
2019 ◽  
Vol 964 ◽  
pp. 185-192
Author(s):  
Sungging Pintowantoro ◽  
Mas Irfan P. Hidayat ◽  
Fakhreza Abdul ◽  
Hamzah Syaifullah

The abundant of nickel ore resources in Indonesia and the regulations of Law of Coals and Minerals No. 4 year 2009 cause the development of nickel ore processing technology. One of the proven nickel ore processing technology is Mini Blast Furnace (MBF). When, the raw materials were fed to the MBF, there is a charging system to ensure good distribution of raw materials in MBF. The double bell charging system has an important role on the distribution of burden material in MBF. By optimizing the distribution and layers of the material burden, it will increase the stability and efficiency of the MBF process. Therefore, this study focused on analyzing the effect of large bell angle on the distribution of burden material in MBF using discrete element method. After analyzed, large bell angle differences produce different burden material distribution. For particle distribution, particles of small density (coal and dolomitee) tend to be concentrated in the center zone and particles of large density (ore) tend to be concentrated in the intermediate and peripheral zone. The larger angle of the large bell will increase particle falling velocity and the kinetic energy of the burden material. The most stable layer in MBF was obtained when using 65o bell angle. The MBF with 65o large bell angle is the best bell angle for MBF with capacity of 250 ton/day due to the greatest possibility of central working furnace operation.


Mr. Austin’s object in constructing this apparatus was to impregnate fluids with any condensible gas by the aid of compression ; and for the sake of preserving them in a state of purity, every part was made, as far as possible, of glass. The retort, in which the air is formed ; the reservoir, in which the supply is contained ; the straight tube, through which it is conveyed, and which serves as a piston ; the cylinder and barrel of the pump ; the receiver, containing the fluid to be impregnated ; and the valves that confine it,—are all made of glass, the only exception being the stuffing of the piston, for which he names various soft materials that may be advantageously employed. For the sake of greater simplicity in the construction, all the parts are arranged in the same vertical line. The reservoir at bottom, in which the air is first collected, is a large bell, with a perforation at the top, where it is connected with the glass rod, which serves as a piston. These are firmly fixed in position ; for in this instrument, the condensation is effected by moving the barrel upon the piston, instead of having a fixed barrel with a moveable piston. Accordingly, the receiver, which is attached to the upper extremity of the glass barrel, is carried up and down with it in effecting the condensation.


Metallurgist ◽  
1962 ◽  
Vol 6 (6) ◽  
pp. 253-254
Author(s):  
V. Ya. Kozhukh ◽  
G. P. Kaminskii ◽  
Yu. Z. Ratner
Keyword(s):  

Archaeologia ◽  
1853 ◽  
Vol 35 (1) ◽  
pp. 114-115
Author(s):  
H. L. Long

Among the archives of the municipality at Vevay are a few notices respecting General Ludlow. He was under constant apprehension of assassination, and by way of protection he was allowed, if necessary, to ring a large bell, suspended in an old tower, since pulled down, which stood on the edge of the lake, at the south-east corner of the market-place, and which was his first habitation at Vevay. His last abode was the house adjoining the eastern gate of the town, which is still in perfect preservation, and well known as Ludlow's residence. Until within the last few years the original inscription remained over the door; it was carved on wood in the form of a scroll, and was given by the present possessor of the mansion to an Englishman travelling through Vevay, who represented himself as a descendant of Ludlow. Permission was accorded him by the government at Berne to erect a small guardhouse in front of the house, in the lake, to watch any boat coming from Savoy; one attempt was made upon his person, as he was coming out of the church in which his ashes now repose, but was frustrated by the authorities of the town surrounding and protecting him. The permissions to ring the bell and to build the guard-house are recorded in the archives. There is also some memorandum relating to “Madame la Genérale Ludlow,” after his decease. On the 6th of June, 1832, having obtained the obliging permission of the syndic to search the records, I proceeded to their examination. One of the conseil d'etat, and the secretary, whose name was Demontel, attended me; unfortunately there was no index, and the person belonging to the establishment, said to be the only man capable of laying his hand upon anything required, happened to be absent at Orbe. So I was left to hunt along the margin for the name of Ludlow,—a tedious and somewhat unprofitable task, for I could not find all I wanted. I have a friend here, at Lausanne, who has engaged to furnish me with some particulars respecting the investigations that followed the assassination of Lisle, in the Place St. François. It would be satisfactory to discover some remnant of the papers and correspondence of the regicides, but none are known to exist, and Ludlow's widow no doubt carried off all his literary remains when she left his mortal remains in the church of St. Martin. The epitaph she put up to him is well known: so are those of Broughton and Love. Interment in the church is no longer permitted, so the old Parliamentarians are likely to have it all to themselves, and to lie there undisturbed until the “crack of Doom,” for we can hardly calculate upon churches being pulled down, and the dead pulled up, in this tranquil, neutralised, unchanging country.


Metallurgist ◽  
1964 ◽  
Vol 8 (1) ◽  
pp. 12-13
Author(s):  
L. Ya. Gavrilyuk ◽  
M. Ya. Ostroukhov
Keyword(s):  

Metallurgist ◽  
1967 ◽  
Vol 11 (9) ◽  
pp. 480-480
Author(s):  
B. P. Krasheninnikov ◽  
N. I. Nagornyi ◽  
D. A. Storozhik

2020 ◽  
pp. 83-92
Author(s):  
Andrey Selegei ◽  
Valery Ivaschenko ◽  
Vyacheslav Golovko ◽  
Nikolay Mikhailovsky ◽  
Svetlana Selegey ◽  
...  

Blast furnace practice has been remaining the most suitable one in the steel production route. A rather large amount of blast furnaces (BF) is equipped with bell-like charging equipment. The discharge capability of such equipment has a drastic influence on the parameters of the charging operations and blast furnace driving rates. The charging features regulate in many cases burden materials descend and the parameters of the BF smelt. In relation to the mentioned, it is revealed that to determine the volume of the burden materials flow passing through the isolation bell of the BF charging area is an urgent scientific and engineering problem. A number of publications is devoted to the problem how to define the burden materials flow coming from the large bell. Most of these studies are grounded on the expressions by prof. Zenkov. However, there is a drawback apparently present in these findings and it can be expressed as the lack of the complex approach to incorporate such parameters as the material type, its granulometry and the geometry of the isolation bell outlet hole. The aim of the current research is to reveal the analytic dependence capable of determining the volumetric flow of the burden materials passing through the hole of the large bell. Thus, possessing the data on the burden materials flow and the geometry of the isolation bell outlet hole, one can determine the initial conditions for developing the trajectory of burden materials movement within the top area of the blast furnace. Moreover, the method proposed with the current publication permits determining the actual aggregate size of the burden materials coming to the BF top charge through the data of burden materials volumetric flow. Further, the actual size of the material particles being charged can be derived from the dependences presented in this work and this, in its turn, influences the permeability of the burden materials column for gases at a given point of BF top radius. Taking these data into account, the real opportunity emerges for an on-line correction of the BF drive by incorporating the certain on-line conditions of BF smelt. The results of the findings reported in this article are to be utilized for improvements on the automation system of blast furnace charge control.


1984 ◽  
Vol 50 ◽  
pp. 245-254 ◽  
Author(s):  
Margaret Guido ◽  
Julian Henderson ◽  
Michael Cable ◽  
Justine Bayley ◽  
Leo Biek

This paper deals with a unique glass bead from the second millennium BC in Wessex. Overlooked for more than 150 years, it has now been recognized for its intrinsic interest and general importance and is here presented for its wide significance in ancient Europe and beyond (pls 8 and 9).InAncient Wiltshire(1812, 210) Richard Colt Hoare recorded the excavation of a barrow in a group of Bronze Age date at Wilsford: ‘No. 7 is a large bell-shaped barrow’ (now regarded as a bowl barrow) ‘composed entirely of vegetable earth. It contained within a cist a little pile of burned bones with which had been deposited a very fine brass pin, a large stone bead which had been stained red, a bead of ivory and a lance head of brass’. This account is based on the records of William Cunnington (1807, 5–6), which include a transcription of a letter from the original excavator, a Mr Owen. The dimensions of the barrow are there given as 80 ft in diameter, 9 ft high, with a circular cist 18 in deep. The barrow is described as ‘No. 6 of Mr Duke's barrows’; there is thus a discrepancy in the numbering of the barrow, since Colt Hoare referred to it as Lake No. 7, while Cunnington kept to No. 6. The barrow, though recently ploughed, still stands to a height of over 2 m, and is today known as G.42 (Grinsell 1957, 211).


Metallurgist ◽  
1968 ◽  
Vol 12 (5) ◽  
pp. 239-239
Author(s):  
V. G. Dering
Keyword(s):  

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