blast furnace control using slag viscosities and

Blast Furnace Control using Slag Viscosities and Liquidus ...

blast furnace slag compositions and higher target viscosities, the resulting temperature is likely to yield a multiphase slag, where the solids contribute significantly to the increase in viscosity. Smelting process optimization In the normal slag operating region, changes in the basicity would have

PDF Blast Furnace Control using Slag Viscosities and ...

The viscosity of molten slag in blast furnace operations is an important process variable, influencing the rate and lo ion of reactions inside the furnace, as well as the ease with which the final slag could be removed from the furnace. To optimize these processes, it is necessary to estimate the slag viscosity and liquidus temperatures as accurately as possible, and know the target values ...

Figure 18 from Blast Furnace Control using Slag Viscosities ...

Corpus ID: 53052948. Blast Furnace Control using Slag Viscosities and Liquidus Temperatures with Phase Equilibria Calculations inproceedings Muller2011BlastFC, title= Blast Furnace Control using Slag Viscosities and Liquidus Temperatures with Phase Equilibria Calculations , author= J. Muller and M. W. Erwee , year= 2011

Viscosities of Iron Blast Furnace Slags

The viscosities of the industrial and synthetic iron blast furnace slags have been measured using a cus-tom designed rotating bob apparatus. This advanced apparatus enables control of the gas atmosphere and rapid quenching of the samples on completion of the viscosity measurements. The experiments were

Viscosities of Iron Blast Furnace Slags

Replacement of CaO SiO 2 or CaO by MgO can decrease the slag viscosity. The viscosity of iron blast furnace slag at 1500 C can be estimated by V = 0.005 0.0262 SiO 2 0.0184 Al 2 O 3 –0.0172 CaO –0.0244 MgO which is derived from the present and previous data.

Viscosity of Industrial Blast Furnace Slag in Indian Scenario ...

Twenty-five numbers of blast furnace slag samples are collected from different operational Indian blast furnaces. The viscosities of these slag samples are estimated using various models developed by several researchers for the purpose. Subsequently, viscosities of some selected slag samples are measured using a high temperature viscometer to choose the best possible model that can be used in the present investigation.

MEASUREMENT OF VISCOSITY OF HIGH ALUMINA BLAST FURNACE SLAGS ...

Slag viscosity is an important process variable of the blast furnace process. The viscosity of molten slag is dependent basically on its chemical composition and on its temperature. Indian blast furnaces run into high alumina slag Al 2

Influence of Basicity and FeO Content on Viscosity of Blast ...

Slag viscosity decreased with increasing FeO content at a fixed basicity CaO/SiO2 of slag. Slag viscosity at low FeO <75 mass% FeO exhibited a minimum value by increasing MgO content in slag....

58 questions with answers in BLAST FURNACE Science topic

The protections for the tuyere of the blast furnaces can have several components: the purity of the copper plate of the front wall, the cooling mode to maintain a lower temperature of the surface...

Slag and its Role in Blast Furnace Ironmaking – IspatGuru

If the furnace controls has the ability to predict the slag viscosity and liquidus temperature then it has the potential to optimize the analysis and decision-making control during the operation of the blast furnace. In such case it replaces the use of rules of thumb pertaining to slag compositions. For this several efforts have been made in the past to measure and model viscosities for ...

Viscosities of Iron Blast Furnace Slags

The viscosities of the industrial and synthetic iron blast furnace slags have been measured using a custom designed rotating bob apparatus. This advanced apparatus enables control of the gas atmosphere and rapid quenching of the samples on completion of the viscosity measurements. The experiments were carried out using Mo spindle and crucible under ultra-high purity Ar flow. The ...

Viscosities of Industrial Lead Blast Furnace Slags Request PDF

Article. Viscosities of Industrial Lead Blast Furnace Slags. January 2005; High Temperature Materials and Processes 24 1 :73-78

Liquidus temperatures and viscosities of Shougang iron blast ...

viscosities between industrial slags and synthetic slags will provide useful indi ions that will assist the appli ion of the results of the synthetic slags to improve the operation of the iron blast furnace. Key words: ironmaking, blast furnace slag, liquidus temperature, viscosity . 1. Introduction

Influence of Basicity and FeO Content on Viscosity of Blast ...

The effects of MgO, Al 2 O 3 , C/S CaO/SiO 2 and FeO on the viscosity and the liquidus temperature TLQ of blast furnace BF primary slag were analyzed by using multiphase equilibrium. The ...

PDF Effect of Composition and Temperature on Viscosities of ...

Viscosities of two industrial lead blast furnace slag sets were experimentally determined as a function of temperature. A Brookfield viscometer and alumina stirrer rods and crucibles were used in ...

Blast Furnace Slag – Tarmac

Blast furnace slag is a secondary aggregate used widely in construction because of its performance attributes and durability. Slag aggregates produced by Tarmac are supplied as CE marked products under the Factory production control process of ISO 9001:2008 for the production of products to BS EN 12342 - Aggregates for Unbound and Hydraulically Bound Mixture, BS EN 13043 - Aggregates for ...

Viscosities of ironmaking and steelmaking slags: Ironmaking ...

The latter included mould fluxes and blast furnace, steelmaking and coal slags. For most slag compositions here, the viscosities predicted with the present model were in better agreement with the measured values than those predicted by the Riboud and Urbain models; coal slags were the only exception. In the case of CaF

ترجمه مقاله کنترل کوره انفجار با استفاده از درجه حرارت های ...

The viscosity of molten slag in blast furnace operations is an important process variable, influencing the rate and lo ion of reactions inside the furnace, as well as the ease with which the final slag could be removed from the furnace. To optimize these processes, it is necessary to estimate the slag viscosity and liquidus temperatures as accurately as possible, and know the target values ...

Effect of TiO2 on Viscosity and Sulfide Capacity of Blast ...

2 blast furnace slag. The relationship between TiO 2 content and viscosity and sulfide capacity of slag under different conditions would be obtained, and the prediction method of sulfide capacity based on the corrected optical basicity would be discussed, which expected a reference for blast furnace operation. 2. Experiment 2.1. Viscosity ...

A model for estimating the viscosity of blast furnace slags ...

Viscosity is an important physical property of blast furnace slags and has a great influence on blast furnace operations. Because of time consumption and difficulties encountered during high temperature experimental measurement, viscosity data are also limited, so a reasonable and accurate estimation model is required to provide the data for controlling and optimizing the blast furnace process.

Slag Viscosity - an overview ScienceDirect Topics

12.3 Blast furnace ironmaking. Carbon use in a blast furnace in the form of both coke and auxiliary reducing agents is discussed in this section. 12.3.1 Coke use and quality. Coke is virtually the universal BF energy source. Use of auxiliary sources is discussed in Section 12.3.2.

Liquidus temperatures and viscosities of Shougang iron blast ...

The blast furnace process continues to be the principal technique used for ironmaking in the world,contributing to over 1 billion tonnes of steel production annually world wide.The impurities present in the original ore result in several hundred million tonnes of waste product in the form of complex oxides,known as slag.The major chemical components of the iron blast furnace slag are Al 2 O 3 ...

Viscous behaviour of CaO-SiO2-Al2O3-MgO-FeO slag

the blast furnace, they exhibit relatively high CaO/SiO 2 C/S ratios of about C/S=1.4–1.6 and 5–20 percent FeO,1,2 which is compared with C/S 1.2 and FeO ≤ 0.2 mass% in tapped blast furnace slags.3 A relatively high basicity of slag in the bosh region is one of the main causes of slag formation problems.4 Although the viscosities of CaO ...

Use and Properties of Blast Furnace Slag as a Building ...

The literary investigation was carried out on different forms of slag used in construction, i.e. slag aggregates, ground granulated blast furnace slag GGBFS and slag mixed with clinker in cement production. Many different properties were examined during the literature review, all segregated into separate egories based on the type of usage, particle size, chemical composition and amount of ...

THE - National Slag

molten condition simultaneously with iron in a blast furnace. The blast furnace is the primary means for reducing iron oxides to molten, metallic iron. Molten iron collects at the bottom of the blast furnace and the liquid slag floats on it. Periodically both are tapped from the furnace, with the slag being solidified and recycled for use in a ...

Ground Granulated Blast Furnace Slag GGBS Chemical ...

The importance of Ground Granulated Blast Furnace Slag GGBS lies in its greener way to become a substitute in concrete material. GGBS being a waste material, it needs proper method for disposal. So incorporating this waste material in concrete can reduce the depletion of conventional concrete components such as cement, fine aggregate and coarse aggregate. Also the various studies show that ...

Blast Furnace Industrial Craft 2 Wiki Fandom

The Blast Furnace is a heat based machine using solely for the creation of Steel. To create Steel with the Blast Furnace, input a source of Iron, such as Iron Ingots, Iron Ore, or Iron Dust, and also 6 Compressed Air Cells. To start the process, the Blast Furnace needs an input of Heat through the orange square on the side of the block. The Blast Furnace can take a maximum of 20 hU/t, so a ...

A model for estimating the viscosity of blast furnace slags ...

Abstract. Viscosity is an important physical property of blast furnace slags and has a great influence on blast furnace operations. Because of time consumption and difficulties encountered during high temperature experimental measurement, viscosity data are also limited, so a reasonable and accurate estimation model is required to provide the data for controlling and optimizing the blast ...

Crystallisation behaviour of blast furnace slag modified by ...

Crystallisation of molten blast furnace BF slag can increase its viscosity, which can in turn affect the quality of slag fibres. Fly ash was added to BF slag to control its crystallisation and modify its chemical composition. FactSage simulation and analyses using X-ray diffraction XRD , scanning electron microscope-backs tered electrons SEM-BSE coupled to an energy dispersive ...

Effects of MnO on slag viscosity and wetting behaviour ...

As more and more Mn bearing iron ores are used to decrease steel cost and deal with the problem of hearth deposition, slag regime change and hearth refractory erosion in blast furnace become more often. To address these problems, it is urgent to clarify the effects of MnO upon the ironmaking production. Herein, the viscosities of slags with different MnO contents were measured for the first ...

Use and Properties of Blast Furnace Slag as a Building ...

The literary investigation was carried out on different forms of slag used in construction, i.e. slag aggregates, ground granulated blast furnace slag GGBFS and slag mixed with clinker in cement production. Many different properties were examined during the literature review, all segregated into separate egories based on the type of usage, particle size, chemical composition and amount of ...

Centrifugal granulation performance of liquid with various ...

Centrifugal granulation is a crucial step in the most promising heat recovery technique for molten blast furnace slag. Facing the fact that slag viscosity changes during the granulation process, in the present work, visualization experiments were conducted for centrifugal granulation of mixture liquids by a spinning disc. Then, the effect of liquid viscosity on granulation performance was ...

Experimental investigation of the viscosities in CaO-SiO2-MgO ...

The viscosities of high alumina blast furnace slags were experimentally determined by the rotating cylinder method using the Brookfield digital viscometer model LVDV-II pro. Two different slag systems were considered for the current study, the CaO-SiO2-MgO-Al2O3 quaternary and the CaO-SiO2-MgO-Al2O3-TiO2 quinary system. Experiments were conducted in the temperature range of 1650 to 1873 K ...

Waste Protocols Project Blast furnace slag BFS

Blast furnace slag01 Original purpose of this report The original purpose was to provide information to the Environment Agency about the production, use and material classifi ion of blast furnace slag BFS via the production of a technical report by a BFS Technical Advisory Group TAG . This information would have enabled

A Simple Test for the Measurement of Slag viscosities 2. Tt

1, along with the viscosities determined in present investigation. In order to see whether the inclined plane method could be applied to other types of slags, measurements were also made on a coal slag S a non­ ferrous slag P a blast furnace slag BF and the

Aggregate from waste steel slag: quality protocol - GOV.UK

2. Waste you can use and codes. You must only use the slag waste from steel-making method: basic oxygen steelmaking BOS electric arc furnace EAF - including carbon steel EAF and high alloy EAF

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