Process Concept for the Dry Recovery of Thermal Energy of …
In order to increase the contact time between slag and copper cooling rollers, the direction of rotation was chosen to turn outwards, so that not one but two strands of slag plates are created, one on each roller. ... Mostaghel S, Lee SK, Oh SY (2016) Recent developments in commercial scale dry slag granulation and energy recovery. AISTech ...
Thermophysical processes in dry granulation of …
Dry granulation is realized by air, which effects on a slag melt jet and provides its comminution. Granules fly several meters and then are subjected to cooling, solidified and entered into …
Dry Slag Granulation – The Future Way to Granulate …
dry slag granulation pilot plant is outlined below: Process Air Supply A radial fan is installed to supply the granulator and the various air cooling chambers with process air. Based on the thermal balance of the granulator an air amount of maximal 180,000 Nm³/h is provided to cool the granules down to target temperature. This air amount and ...
Energy–environment–economy evaluations of
To address this issue, dry slag granulation (DSG) technology has been proposed to recover the waste heat from molten slag. Before commercial implementation, the sustainability and feasibility of the DSG should be well assessed. ... Co-treatment of spent carbon anode and copper slag for reuse and the solidification of the constituent fluorine ...
Advances in recovery of valuable metals and waste heat …
Dry treatment is typically accompanied by slag granulation, in which waste heat at 1100–1350 °C cannot be readily recovered for achieving rapid cooling of the slag; thus, most …
Dry slag granulation: producing valuable by-products …
Our dry slag granulation technology involves pouring molten slag from above our rig down to a spinning disc. That disc is spinning at high speed and it atomises the molten slag into small granules. [Image changes to show molten slag being atomised and collected in the taurus]
A Review of Granulation Process for Blast Furnace Slag
11ügranulated slag Figure 2. INBA process. 4 Dry granulation process On the blast furnace slag treatment technology, for a long time, water quenching process has token the leading position. However, there are many defects of water-quenching slag method, which can be roughly concluded as follow: a mass of sensible heat unrecovered, high
The effect of size distribution of slag particles obtained in dry …
This study investigated the size distribution of slag particles obtained from the dry granulation of molten slag. In addition, the effect of using the slag obtained from dry granulation in slag cement blends was analyzed. All the results showed that there was a wide size distribution range of blast furnace slag particles in ligament formation.
Experimental investigation on centrifugal granulation of …
Since the 1970s, research on dry granulation of blast furnace slag with waste heat recovery has been carried out to improve energy efficiency and overcome the environmental problems caused by traditional slag treatment methods in the iron and steel industry (Duan et al., 2022a, Duan et al., 2022b).Dry granulation with waste heat recovery technologies includes the …
Dry Granulation of Molten Blast Furnace Slag and Heat …
Dry granulation, as a new process of molten blast furnace slag (BFS) treatment, is an attractive alternative to water quenching. The performance of BFS obtained from dry granulation must be assessed.
Granulated Slag at Best Price in India
Granules High Quality Granulated Copper Slag, For Surface Blast-Cleaning ₹ 350/ Metric Ton Get Latest Price. Material. Copper. Form. Granules. Usage/Application. Surface Blast-Cleaning. Color. Black. ... Dry Slag Granulation (DSG) Blast Furnace Slag Operation; Granulated Blast Furnace Slag (GBS) Show More Videos V Related Category. Fly Ash ...
Some Fundamental Aspects of Dry Slag Granulation …
Some Fundamental Aspects of the Dry Slag GranulationProcess . Sharif Jahanshahi*, Yuhua Pan and Dongsheng Xie . CSIRO Minerals Down Under National Research Flagship, Clayton, Victoria, 3168, Australia . Abstract: There is a growing interest in development of a dry slag granulation (DSG) process so as to recover the
Granulation and Heat Recovery from Metallurgical Slags
In: Con- 7 crete international. American Concrete Institute, p 11 40. Jahanshahi S, Xie D (2012) Current status and future direction of 17. Das B et al (2010) Characterization and recovery of copper CSIRO's dry slag granulation process with waste …
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 is the …
Experimental investigation on molten slag granulation for …
For copper slag granulation, the main mass fraction peak moved to the range of small diameter with an increase in rotating speed. ... Simulation of ligament mode breakup of molten slag by spinning disk in the dry granulation process. Appl. Therm. Eng., 84 (2015), pp. 437-447. View PDF View article View in Scopus Google Scholar. Cited by (0)
Experimental investigation of glass content of blast furnace slag …
Dry granulation, as a new process of molten blast furnace slag (BFS) treatment, is an attractive alternative to water quenching. The performance of BFS obtained from dry granulation must be assessed. The glass content, which is a significant factor to evaluate the performance of BFS as a replacement material for Portland cement, was investigated using the …
(PDF) RECENT DEVELOPMENTS IN DRY SLAG GRANULATION…
Paul Wurth has approached the topic of dry slag granulation with a simple but effective method in which steel spheres and liquid slag are mixed to achieve fast cooling of the blast furnace slag ...
(PDF) Experimental study of rotating dry slag granulation …
The technogenic copper deposit of slag Depo 1 is located in the industrial district of the Smelter and Refineries of RTB Bor. Exploitation reserves are 9 190 940 t of slag with the average copper content of 0.715%. Sample of this deposit was melted in a furnace and then cooled with a jet of water when it was poured into a thin jet, whereby the ...
Experimental investigation on molten slag granulation for …
Dry granulation technology can be applied to granulate molten metallurgical slags with different viscosity and surface tension. Ligament formation for blast furnace slag, ferroalloy slag and copper slag granulation can obtain comparatively uniform solid slag particles, which is beneficial to heat transfer or chemical reaction.
Dry Slag Granulation – The Future Way to Granulate …
Dry slag granulation is based on molten slag atomization using a variable speed rotating cup or dish (see Fig. 1). The slag is fed from the slag runner via a vertical refractory …
Some Fundamental Aspects of Dry Slag Granulation …
Abstract: There is a growing interest in development of a dry slag granulation (DSG) process so as to recover the sensible and latent heats from molten slags and convert iron blast furnace …
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 ...
Hatch Ironmaking Technologies | Dry Slag …
Abrasion is one leading cause of stave wear and requires interim and major shutdowns to fix or rebuild. Hatch's wear-resistant staves provide an integrated hard surface that resists abrasion and is many orders of magnitude harder …
Energy recovery from high temperature slags
Attempts to recover energy from metallurgical slags have faced a fundamental constraint that is the low thermal conductivity of slag, ranging from 1 to 3 W m −1 K −1 for solid to 0.1–0.3 W m −1 K −1 for molten slags at 1400–1500 °C [6], [27], [28]. This explains why the core of a slag pot cooled in air remains liquid for days.
Preface for Thematic Section: Slag Granulation
The fayalite-type slags produced by the copper/nickel smelting and converting processes are not cementitious, and their uses include abrasive material for sandblasting and ball milling. ... The next work by Cooksey et al. provides an overview of the design and operation of a dry slag granulation pilot plant at CSIRO. This overview covers some ...
'Dry'Granulation of Slags for Producing Cement …
FIG 2 - Pilot-scale dry granulation (atomization) apparatus, with raised induction furnace (housing graphite crucible). Slag is tapped below onto a rotating copper disc, and the solidified slag ...
An Overview of Utilization of Blast Furnace and Steelmaking Slag …
Dervis Ozkan et al. / Materials Today: Proceedings 11 (2019) 516â€"525 519 Liu et al. reported that, significantly low thermal conductivity of molten slag can be overcome through enhancing the rotational speed in dry slag granulation process to obtain improved heat transfer between slag particles [34].
Dry Slag Granulation: A Path to Improving the Safety and …
For slag handling to become inherently safe, our industry must eliminate the potential contact of water with molten slag. This is today feasible with the advent of dry …
Heat Recovery from Slag through Dry Granulation
Dry Slag Granulation," DMR 3052, Confidential Report, CSIRO Minerals, 2006. Title: 2 page paper summary Author: Sharif Jahanshahi Subject: CSRP Conference Created Date:
Experimental investigation on molten slag granulation for …
Granulation characteristics of copper slag were studied ... The gas quenching dry slag granulation technique is one of the most promising slag treatment methods due to realize efficient waste heat ...