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Some Fundamental Aspects of Dry Slag Granulation Process

granulation process and the dynamics of slag droplet collision with solid surfaces will be covered. Published studies on the thermodynamics of sulphur in slags and kinetics of sulphur transfer between blast the furnace slags and oxidising gas mixtures have been reviewed to ascertain the effects of oxygen ial pressure on part

AISTech2018 Dry Slag Granulation The Future Way to

The wet granulation process operates with a high water to slag ratio of about 8:1. The advantage of the wet process is that it is accepting wide fluctuations in the mass flow and physical/chemical properties of the slag. However, the wet process faces also significant disadvantages:

Development of Continuous Steelmaking Slag Solidification

from blast furnace slag, the air granulation method, 8,9) rotating drum granulation method,10) and stirring granulation method11) were examined with practical scale equipment. Recently, the rotary cup atomizer method12,14) and fluidized bed direct charging method15) have also been examined. The only example of practical application of an air gran-

Design and Operation of Dry Slag Granulation Pilot Plant

高达10%返现 CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient

Stabilization of Stainless Steel Slag via Air Granulation

高达10%返现 Pilot-scale air granulation testing was completed at TON Materials Technology to determine if fast cooling can be achieved in the air granulation process to prevent the transformation of β-C 2 S to γ-C 2 S and produce stable AOD slag. The pilot-scale air granulation system was able to treat from 15 kg/min to 30 kg/min of molten slag

Reactivity and performance of dry granulation blast

In this method, the granulated blast furnace slag samples are dry granulation slag. Fig. 1 shows the dry granulation for molten blast furnace slag and slag particles. In the process for dry granulation, the molten blast furnace slag was poured into the rotary cup with a high rotating speed.

EP2922976B1 Dry slag granulation system and method

EP2922976B1 EP13794861.8A EP13794861A EP2922976B1 EP 2922976 B1 EP2922976 B1 EP 2922976B1 EP 13794861 A EP13794861 A EP 13794861A EP 2922976 B1 EP2922976 B1 EP 2922976B1 Authority EP European Patent Office Prior art keywords tundish granulator slag speed orientation Prior art date 2012-11-23 Legal status (The legal status is an assumption and is not a legal

Numerical investigation of breakup process of molten blast

高达10%返现 Molten slag is broken up by supersonic air into droplets through the air quenching dry slag granulation technique. The breakup process of blast furnace slag directly determines the droplet diameter and the waste heat recovery. In order to gain deep insight into the granulation mechanism and visualize the breakup process, three-dimensional unsteady numerical simulation based on the k-ω

Effect of process parameters on dry centrifugal

高达10%返现 The disk material has a greater effect on the slag granulation than the other tested factors. When the SiN–SiC disk with high roughness is used for granulation, fine slag particles with an average diameter of 2.91 mm can be obtained, while the proportion of slag fiber of 18% can cause negative effects on the granulation process.

Blast Furnace Slag Granulation at the Cast House IspatGuru

The process of slag granulation involves pouring the liquid slag through a high pressure water spray in a granulation head, located in close proximity to the BF. Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to take place. Large volume of water is needed (around 10

Ori Steel Slag Granulation Institut Teknologi Bandung

In order to simulate the process of steel slag granulation, a set of equipment was made as shown in Figure 1. This consists mainly of launder, granulation tank, dewatering tank, waste water tank and fresh water tank. Solid steel slag obtained from PT. Krakatau Steel was melted in an induction furnace at 161DOe and then transferred and poured into

THE DRY BLAST- FURNACE SLAG GRANULATION AS

Slag treatment is the main ecological problem of the modern Ukraine metallurgy manufacture. The blast-furnace slag is the by-product of the ironmaking process. It has produced in the blast-furnace in the amount of 300 kg per tonne of pig iron. Now in Ukraine the blast-furnace slag is treated by impinging much water for granulation. This

(PDF) Experimental study of rotating dry slag granulation

Download Free PDF. Experimental study of rotating dry slag granulation unit: Operating regimes, particle size analysis and scale up. Kali Prasad. CFD simulation of free surface flow and heat transfer of liquid slag on a spinning disc for a novel dry slag granulation process. By Peter Witt.

Effects of granulator structure and cooperating mode with

Jul 05, 2021 Based on this, the paper focused on the influence of the granulator structure and the cooperating mode with slag tube on the centrifugal granulation characteristics. An unsteady, three dimensional, and two-phase model was established to analyze the granulation process of slag

US8302430B2 Process and installation for granulating

In a process for granulating slag, from a blast furnace or a smelting reduction plant, in which a granule/water mixture formed during the granulation is fed to a granulation tank and then to a dewatering installation, in which the slag granules are dewatered. H 2 S-containing vapors and gases formed during the granulation are at least partially condensed by injection of water in a condensation

CN102329900B Liquid steel slag dry-process granulating

The invention relates to a liquid steel slag dry-process granulating device and a sensible heat recovery method. The liquid steel slag dry-process granulating device comprises a feeding device, a dry-process granulator, a cyclone separator and a sensible heat recovery device, wherein the dry-process granulator, the cyclone separator and the sensible heat recovery device are mutually communicated.

Stabilization of Stainless Steel Slag via Air Granulation

Feb 08, 2019 Pilot-scale air granulation testing was completed at TON Materials Technology to determine if fast cooling can be achieved in the air granulation process to prevent the transformation of β-C 2 S to γ-C 2 S and produce stable AOD slag. The pilot-scale air granulation system was able to treat from 15 kg/min to 30 kg/min of molten slag

magnetic separator for slag granulation system

slag granulation process pdf sirptsciencecollege. Baosteel: Steelmaking slag treatment saves space, dust. Steelmaking slag is an inevitable byproduct from the steelmaking process, . and, due to their slow static cooling and granulation processes, occupy large.

KR101248982B1 Method and installation for slag

The present invention relates to a method for forming slag particles, whereby molten slag is converted into slag sand by a water jet and coarse slag using one or more conveying screws 4a mounted obliquely in the first settling tank 4c. The slag sand is discharged into the discharge plant 4 by withdrawing sand, supplying excess water from the first precipitation tank 4a to the second

Products › Ironmaking and steelmaking › Slag Granulation

In the granulation section, the liquid slag is ‘quenched’ by pouring onto it an excess water stream. The evaporated water will be condensed in a condensing tower located above the granulation tank. This proven granulation process ensures economic granulation and produces valuable and consistent properties in the blast furnace slag.

Modeling of Powder Production During Centrifugal

Apr 28, 2021 The Centrifugal atomization process finds wide application in the production of sprays & droplets as well as polymer microspheres , dry slag granulation [3, 4], metal powder production [5,6,7], etc.There is an increasing demand for powders and granules as a form of starting material for several industrial applications such as architectural coatings, additive manufacturing of net shape

Granulation–Carbonation Treatment of Alkali Activated

Nov 26, 2016 The water to slag ratio (W/S) employed in most experiments was of 0.12 l/kg, which was experimentally proven to be the optimal value for granulating the analysed BOF slag sample; for the granulation–carbonation tests carried out on alkali activated slag

Prediction on particle size characteristics of high

Oct 01, 2020 New process for dry granulation and heat recovery from molten blast-furnace slag Ironmaking Steelmaking.,12 ( 1985 ),pp. 14 20,10.1016/0304-386X(85)90024-6 View Record in Scopus Google Scholar

slag powder average power nsumption per ton of product

A Review of Granulation Process for Blast Furnace Slag this basis, the BF slag is up to 247 million tons in 2014, corresponding to 11 million tons standard coal, approximating 14.0% of consumption in the BF process.

DRY SLAG GRANULATION WITH HEAT RECOVERY*

The wet granulation process operates with a high water to slag ratio of about 8:1. This wet process is quite accepting to fluctuations in the quantity and properties of the slag, however the wet process has the following drawbacks: • Despite mechanical dewatering in drums, silos or heaps, a residual moisture of

Heat recovery from slag improves energy efficiency of furnaces

slag. These all require rapid cooling of the slag and this led to the development of the idea that the cooling process could involve recovery of heat which could be re-used. Granulation of slag Slag previously discarded, has commercial . value when processed into the right form, but must be cooled down in a controlled

86 IRON AND STEEL SLAG USGS

many sites have large slag stockpiles, which can allow for processing to continue for several years after the furnaces are closed or idled. The majority of U.S steel slag production is from electric arc furnaces. At yearend 2019, domestic GGBFS remained in limited supply because granulation cooling was available at

slag granulation process pdf

Project Plant>slag granulation process pdf . Rating. 4.8 (2866 Ratings) slag granulation process pdf. Recent progress of hot stage processing for steelmaking slags in Jinan Steel has been using this process for BOF slag granulation since 1978 for their 25 ton BOF. Request Quotation.

Experimental study of rotating dry slag granulation unit

Aug 25, 2016 This paper focuses on an experimental study of dry slag granulation process using an analogue for BF slag (a mixture of rosin and paraffin wax). This analogue can be used to experimentally study dry slag granulation at a relatively low temperature of 130 °C compared to BF slag at 1500 °C. Different ranges of operating conditions in terms of

US8302430B2 Process and installation for granulating

In a process for granulating slag, from a blast furnace or a smelting reduction plant, in which a granule/water mixture formed during the granulation is fed to a granulation tank and then to a dewatering installation, in which the slag granules are dewatered. H 2 S-containing vapors and gases formed during the granulation are at least partially condensed by injection of water in a condensation

Reactivity and performance of dry granulation blast

Jan 01, 2019 In this method, the granulated blast furnace slag samples are dry granulation slag. Fig. 1 shows the dry granulation for molten blast furnace slag and slag particles. In the process for dry granulation, the molten blast furnace slag was poured into the rotary cup with a high rotating speed.

KR101248982B1 Method and installation for slag

The present invention relates to a method for forming slag particles, whereby molten slag is converted into slag sand by a water jet and coarse slag using one or more conveying screws 4a mounted obliquely in the first settling tank 4c. The slag sand is discharged into the discharge plant 4 by withdrawing sand, supplying excess water from the first precipitation tank 4a to the second

Prediction on particle size characteristics of high

Oct 01, 2020 New process for dry granulation and heat recovery from molten blast-furnace slag Ironmaking Steelmaking.,12 ( 1985 ),pp. 14 20,10.1016/0304-386X(85)90024-6 View Record in Scopus Google Scholar

magnetic separator for slag granulation system

slag granulation process pdf sirptsciencecollege. Baosteel: Steelmaking slag treatment saves space, dust. Steelmaking slag is an inevitable byproduct from the steelmaking process, . and, due to their slow static cooling and granulation processes, occupy large.

Experimental investigation of glass content of blast

Sep 13, 2014 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

Granulation performance by hybrid centrifugal-air blast

Jul 05, 2021 The liquid slag in the spreading and granulation stages underwent a narrow drop range [19,28] of temperature, with little effect on breakup process and granulation behavior [28,29]. Therefore, heat transfer was not considered in this study. Moreover, this assumption has been used in existing simulation studies [21,23,30] and proved to be feasible.

Design and Operation of Dry Slag Granulation Pilot Plant

DOI: 10.1007/s40831-019-00214-0 Corpus ID: 139431241. Design and Operation of Dry Slag Granulation Pilot Plant @article{Cooksey2019DesignAO, title={Design and Operation of Dry Slag Granulation Pilot Plant}, author={M. Cooksey and Adrien Guiraud and Benny Kuan and Y. Pan}, journal={Journal of Sustainable Metallurgy}, year={2019}, volume={5}, pages={181-194} }

Dry Granulation of Blast Furnace Slag Steel360 News

Apr 04, 2019 Dry slag granulation process is essentially to atomize the liquid slag and then to cool the particles rapidly so as to produce a glassy slag. Heat is recovered from the slag in the following ways. As the spray of slag particles moves outwards from the atomizer, heat is lost by radiation to the vessel and by convection to the air moving through