Paul Wurth
Paul Wurth has developed the INBA® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum. With about 300 references, it is the most …
Current status and future direction of CSIRO's dry slag granulation
PDF | On Oct 1, 2012, Sharif Jahanshahi and others published Current status and future direction of CSIRO's dry slag granulation process with waste heat recovery | Find, read and cite all the ...
Dry Slag Granulation: A Path to Improving the Safety and
Slag dumping and water granulation are the most commonly used slag treatment methods in the metallurgical industries. In both processes, water is present …
Heat Exchange in the Granulation Chamber of an Installation for Slag
In foreign countries, the investigations of the possibility of dry granulation of slags are carried out for a long time. According to this procedure, hot slags contact with cooling gases (in particular, with air) [6,7,8,9,10].The installations for slag dry granulation (ISDG) prove to be much more efficient because they enable us to (almost completely) …
Prediction on particle size characteristics of high
Section snippets Physical model construction. For this work, a 3-D model was established to describe the centrifugal granulation of liquid BF slag via spinning disk atomizer, as based on several assumptions: 1) continuous flow of liquid slag; 2) negligible heat transfer; 3) incompressibility of flowing slag and surrounding air.
Analysis of Blast Furnace Slag Quenching Dry Granulation Process
In the work presented analysis of existing two-stage processes of steelmaking and new processes of metals' carbothermic reduction. The first stage of traditional metallurgical complex includes…
Modeling on Dry Centrifugal Granulation Process of
To improve the fluidity of yellow phosphorus slag in the centrifugal granulation process, the effect of B2O3 on the viscosity and structure of slag were investigated. The results showed that ...
(PDF) RECENT DEVELOPMENTS IN DRY SLAG …
Here we review common slag handling practices, the developments in dry slag granulation over the last three decades, introduce the Ecomaister-Hatch dry slag …
On Hydrodynamics of Dry Granulation of LD/BOF Slag …
The LD/BOF slag, in its granulated form, has many applications in construction industry, as reviewed by Das et al. [], like roads, railway track ballasts, road stones, etc.Two broadly classified methods of slag granulation, as discussed by Jahanshahi et al. in 2011 [] and in 2012 [], are wet and dry granulation methods.Between these, the Dry Slag …
Slag Granulation with Continuous Dewatering …
Molten slag is often considered as a waste material when it is cast into slag pits. INBA slag granulation and dewatering system is the proven route for converting molten slag into a …
Tapping hot slag for energy
Process scheme of the dry slag granulation pilot plant at voestalpine Stahl Recovering heat with air. The basic setup of the plant is pretty simple: slag is fed from the blast furnace tap hole through a slag …
(PDF) RECENT DEVELOPMENTS IN DRY SLAG GRANULATION…
Here we review common slag handling practices, the developments in dry slag granulation over the last three decades, introduce the Ecomaister-Hatch dry slag granulation process, and elaborate on ...
Economic and environmental evaluation of slag dry granulation
Wet granulation Dry granulation Fig. 18 Comparison of estimated capital and operating costs for the integrated dry slag granulation and heat recovery process with conventional wet granulation for ...
Centrifugal granulation characteristics of molten blast furnace slag
In order to more vividly simulate the granulation process of molten slag coupling with heat transfer, some low temperature phase change materials were used as working media. Min et al. [17] and Zhu et al. [18] employed a mixture of rosin and paraffin as working medium and designed the experiments based on similarity theory with three ...
Research progress on granulation process of iron and steel slag
To solve the problem of difficult utilization of steel slag, the liquid steel slag was modified and the air-quenching granulation process was carried out to make steel slag into a value-added end ...
Simulation of ligament mode breakup of molten slag by …
1. Introduction. In the rather energy-intensive metal industry, molten slag carries a substantial amount of high quality thermal energy [1], [2], [3].Recently, the spinning disk atomizer has been successfully applied to recover the high quality waste heat carried by molten slag, which is known as the dry slag granulation (DSG) method [4], …
Yuhua Pan* Peter J. Witt Dongsheng Xie
novel dry slag granulation process', Progress in Computational Fluid Dynamics, Vol. 10, Nos. 5/6, pp.292–299. Biographical notes: Yuhua Pan received his PhD in Process Metallurgy from Luleå ...
A Review of Granulation Process for Blast Furnace Slag
granulation affiliated with dry granulation is the optimum process, with smaller slag particle size (about 2mm), more glassy phase and higher recovery rate. 1 Introduction
Numerical Simulation of the Slag Granulation Process …
that aect the slag granulation process. The process of slag granulation in real industry is always more complicated. The study of the inuence of multiple factors has some guiding implications for the slag granulation process in the iron and steel industry. 2 Mathematical Formulation and Numerical Methods This section describes the construction ...
A new technological approach to the granulation of slag …
The technological factors required to improve the operational properties of granulated metallurgical slags demanded in the building industry have been analyzed. In order to satisfy these factors, a new technology for hydro-vacuum granulation of slag melts (HVG) has been developed. It is shown that the main advantage of the proposed HVG …
Process and Equipment Design for the Dry Slag …
Slag Granulation Technology Abstract: The granulation of blast furnace (BF) slag with water quenching has many disadvantages, such as high water consumption and difficulty in heat recycling. The ... Fig. 2: Flow chart of dry granulation and waste heat recovery process for slag developed by Central
Experimental investigation on granulation characteristics …
In essence, gas quenching slag granulation process is a gas-liquid flow atomization process which includes primary breakup and secondary breakup [31].In the primary breakup, the growth of Kelvin Helmholtz (KH) unstable wave at the gas-liquid interface causes the film to break up into ligaments [32].The size of ligaments is related …
A Review of Granulation Process for Blast Furnace Slag
Molten slags of blast furnace is a second resources with great value of 1600~1 800 MJ sensible heat per ton. At present, water-quenching process plays a leading role in recovering waste heat of the molten slags. However, this method not only cost lots of water, but also recover little sensible heat and can pollute the surrounding environment. Dry …
A Review of Granulation Process for Blast Furnace Slag
Centrifugal granulation method is the optimum process, with smaller slag particle size (about 2mm), higher glassy phase and recovery rate. The process capacity and the …
Current status and future direction of CSIRO's dry slag …
disc/cup offers a more efficient process for slag granulation [10], which uses less air than blasting with air to break up the slag into droplets, thus has the potential to produce a higher grade ...
Dry slag granulation: producing valuable by-products …
We developed a new, integrated dry granulation and heat recovery process which promotes sustainability and full value recovery. Molten slag is atomised under centrifugal forces exerted by a spinning disc to produce droplets which are then quenched and solidified using air to recover the heat.
Research progress on granulation process of iron and steel slag
Then, a combined granulation process mode combining dry and wet processes is proposed to improve the processing efficiency of molten slag. The increase in resource conversion rate and the quality of granulated slag after primary granulating of iron and steel slag contribute to reducing the amount of slag to be treated secondarily.
Dry Slag Granulation: A Path to Improving the Safety and
Abstract. Slag dumping and water granulation are the most commonly used slag treatment methods in the metallurgical industries. In both processes, water is present (by desire for cooling and dispersion or as a result of rain accumulation) and thus equipment and operations are designed to minimize and mitigate the risk of steam …
Products › Ironmaking and steelmaking › Slag …
Slag granulation using water sprays is now an established technology that not only simplifies blast furnace casting floor operations but also provides an economical route for producing of a valuable raw material for a host …
Preface for Thematic Section: Slag Granulation
However, the most commonly used process for melt granulation uses water jets. Water granulation of slag has some shortcomings when measured against increasingly stringent requirements for sustainable operations. As a "wet" process, water granulation cannot recover high-grade waste heat from molten slags.