Mechanized unit for scraping off crusts in hot-metal-car ladles

Metallurgist ◽  
1983 ◽  
Vol 27 (11) ◽  
pp. 361-362
Author(s):  
A. P. Kotsyubenko ◽  
A. M. Amis ◽  
V. G. Merenkov
Keyword(s):  
Hot Metal ◽  
Mechanized Unit

Increase of desulphurization potential of technological systems of hot metal injection desulphurization by various reagents

2019 ◽  
Vol 75 (11) ◽  
pp. 1237-1243
Author(s):  
A. F. Shevchenko ◽  
I. A. Manachin ◽  
B. V. Dvoskin ◽  
A. S. Vergun ◽  
S. A. Shevchenko ◽  
...  
Keyword(s):  
Technological Systems ◽  
Hot Metal

Review of methods of slag removal from melt surface in hot metal and steel ladles

2020 ◽  
Vol 76 (12) ◽  
pp. 1243-1252
Author(s):  
B. A. Sivak ◽  
A. V. Protasov ◽  
L. A. Smirnov
Keyword(s):  
Settling Tank ◽  
Necessary Condition ◽  
Hot Metal ◽  
Slag Removal ◽  
Production Scale ◽  
Technical Parameters ◽  
Ecological Requirements ◽  
The Usa ◽  
Work Done ◽  
Technological Methods

The removal of slag from melt surface of hot metal and steel ladles is a necessary condition to provide a deep desulphurization and dephosphorization of hot metal and steel in the process of their processing. A review of methods of slag skimming presented, mainly based on slag mechanical shoveling and its removal out of ladles by vacuum sucking. It was shown, that manipulators design for the slag skimming working instrument moving depends on the production scale, mass of the processed heats, amount and properties of the slag to be removed, production process intensity and ecological requirements. Peculiarities of designs and technical parameters of machines for slag skimming presented, designed by Irkutsk plant of heavy machinery, Scientific and Production Enterprise n.a. M.I. Platov, VNIIMETMASH, Kuznetsk and Novolipetsk steel plants. Technological methods of control of slag composition and physical properties considered, first of all of viscosity and fluidity, which have significant effect on selection of a method of slag skimming. Advantages and drawbacks of actions, aimed at more complete slag removal from metal surface by a scraper noted including bath blowing off by an inert gas, liquid slag tapping into am intermediate settling tank following its removal into a slag bowl. In case of satisfactory fluidity it is possible to slag removal by vacuum sucking, which at the same time promoted the melt degassing. Work done in this area abroad noted. Methods of vacuum slag removal developed in the USA and Japan described.

Prediction of Mass Transfer in Hot Metal Reactors

2019 ◽  
Author(s):  
L. Oliveira Campos ◽  
P. Gardin ◽  
S. Vincent
Keyword(s):  
Mass Transfer ◽  
Hot Metal

Diagnostics, Optimization and Mathematical Models of Coke-Sinter-Hot Metal Production Process

2019 ◽  
Author(s):  
O. Lebid ◽  
Y. Vyshinskya ◽  
N. Gordon ◽  
V. Chaika ◽  
G. Izumskiy ◽  
...  
Keyword(s):  
Mathematical Models ◽  
Production Process ◽  
Hot Metal ◽  
Metal Production

CYW CHOICE

Alloy Digest ◽  
1956 ◽  
Vol 5 (2) ◽  
Keyword(s):  
Tensile Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
Hot Metal ◽  
Hot Work Steel ◽  
Class Iv

Abstract C. Y. W. CHOICE steel is a chromium hot work steel developed for applications where dies or tools are subjected to heavy pressure or impact while in contact with hot metal. It is an ASM Class IV A-2 tool steel. This datasheet provides information on composition, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: TS-43. Producer or source: Firth Sterling Corporation.

scholarly journals Optimal hot metal desulphurisation slag considering iron loss and sulphur removal capacity part I: fundamentals

2021 ◽  
pp. 1-13
Author(s):  
Frank N. H. Schrama ◽  
Elisabeth M. Beunder ◽  
Sourav K. Panda ◽  
Hessel-Jan Visser ◽  
Elmira Moosavi-Khoonsari ◽  
...  
Keyword(s):  
Iron Loss ◽  
Hot Metal ◽  
Removal Capacity ◽  
Sulphur Removal

scholarly journals Utilization of Organic Mixed Biosludge from Pulp and Paper Industries and Green Waste as Carbon Sources in Blast Furnace Hot Metal Production

2021 ◽  
Vol 13 (14) ◽  
pp. 7706
Author(s):  
Tova Jarnerud ◽  
Andrey V. Karasev ◽  
Chuan Wang ◽  
Frida Bäck ◽  
Pär G. Jönsson
Keyword(s):  
Blast Furnace ◽  
Carbon Sources ◽  
Hydrothermal Carbonization ◽  
Pulp And Paper ◽  
Hot Metal ◽  
Technological Parameters ◽  
Metal Production ◽  
Green Waste ◽  
Fuel Rate ◽  
Pulp And Paper Industries

A six day industrial trial using hydrochar as part of the carbon source for hot metal production was performed in a production blast furnace (BF). The hydrochar came from two types of feedstocks, namely an organic mixed biosludge generated from pulp and paper production and an organic green waste residue. These sludges and residues were upgraded to hydrochar in the form of pellets by using a hydrothermal carbonization (HTC) technology. Then, the hydrochar pellets were pressed into briquettes together with commonly used briquetting material (in-plant fines such as fines from pellets and scraps, dust, etc. generated from the steel plant) and the briquettes were top charged into the blast furnace. In total, 418 tons of hydrochar briquettes were produced. The aim of the trials was to investigate the stability and productivity of the blast furnace during charging of these experimental briquettes. The results show that briquettes containing hydrochar from pulp and paper industries waste and green waste can partially be used for charging in blast furnaces together with conventional briquettes. Most of the technological parameters of the BF process, such as the production rate of hot metal (<1.5% difference between reference days and trial days), amount of dust, fuel rate and amount of injected coal, amount of slag, as well as contents of FeO in slag and %C, %S and %P in the hot metal in the experimental trials were very similar compared to those in the reference periods (two days before and two days after the trials) without using these experimental charge materials. Thus, it was proven that hydrochar derived from various types of organic residues could be used for metallurgical applications. While in this trial campaign only small amounts of hydrochar were used, nevertheless, these positive results support our efforts to perform more in-depth investigations in this direction in the future.

scholarly journals Effect of the Fe2O3 Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 417
Author(s):  
Wenkui Yang ◽  
Jian Yang ◽  
Yanqiu Shi ◽  
Zhijun Yang ◽  
Fubin Gao ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Theoretical Calculation ◽  
Oxygen Potential ◽  
Oxygen Activity ◽  
Hot Metal ◽  
Rich Phase ◽  
Addition Amount

In this paper, the influence of the Fe2O3 addition amount on the dephosphorization of hot metal at 1623 K with the slag of the low basicity (CaO/SiO2) of about 1.5 was investigated by using high-temperature laboratorial experiments. With increasing the Fe2O3 addition amount from 5 to 30 g, the contents of [C], [Si], [Mn] and [P] in the hot metal at the end of dephosphorization are decreased and the corresponding removal ratios increase. In dephosphorization slags, the phosphorus mainly exists in the form of the nCa2SiO4–Ca3(PO4)2 solid solution in the phosphorus-rich phase and the value of coefficient n decreases from 20 to 1. Furthermore, the oxygen potential and activity at the interface between the slag and hot metal are increased. When the oxygen potential and the oxygen activity at the interface are greater than 0.72 × 10−12 and 7.1 × 10−3, respectively, the dephosphorization ratio begins to increase rapidly. When the Fe2O3 addition amount is increased to 30 g, the ratio of the Fe2O3 addition amount to theoretical calculation consumption is around 175%, and the dephosphorization ratio reaches the highest value of 83.3%.

scholarly journals Optimal hot metal desulphurisation slag considering iron loss and sulphur removal capacity part II: evaluation

2021 ◽  
Vol 48 (1) ◽  
pp. 14-24
Author(s):  
Frank N. H. Schrama ◽  
Elisabeth M. Beunder ◽  
Sourav K. Panda ◽  
Hessel-Jan Visser ◽  
Elmira Moosavi-Khoonsari ◽  
...  
Keyword(s):  
Iron Loss ◽  
Hot Metal ◽  
Removal Capacity ◽  
Sulphur Removal
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