RECENT DEVELOPMENTS IN DRY SLAG GRANULATION
slag hauling and production of higher value by-product. Wet granulation allows for fast quenching of molten slag and production of high value glassy material, which, for BF slag, demonstrates desirable cementitious properties post milling. BF slag is typically devoid of metal, making water granulation a manageable process from a safety perspective.
Slag Granulation with Continuous Dewatering Ironmaking
second granulation tank, one granulation unit can handle the slag of two tap holes. Continuous filtering and evacuation of dewatered slag sand up to its storage facility without inter-ruptions for purging. High reliability. Measurement of slag flow, due to the design of the drum and the dewatering process.
AISTech2018 Dry Slag Granulation The Future Way to
The wet granulation process operates with a high water to slag ratio of about 81. The advantage of the wet process is that it is accepting wide fluctuations in the mass flow and physicalchemical properties of the slag. However, the wet process faces also significant disadvantages
Some Fundamental Aspects of Dry Slag Granulation
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
NATIONAL SLAG NSA 1814 ASSOCIATION
2. SLAG GRANULATION PROCESS The Classical granulation process has been employed for a long time, and I do not believe it is necessary to describe it at this time. The cement companies in Europe have preferred basic slag for a long time and when acid slag was blended with Portland cement, a much reduced percentage was used.
IBMD Granulated Blast Furnace Slag Manufacturer in India
The process of slag granulation involves pouring the molten slag through a high-pressure water spray in a granulation head, located in close proximity to the blast furnace. Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to
Dry Granulation of Blast Furnace Slag Steel360 News
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 ...
slag granulation description
slag granulation process pdf Shanghai Machinery. SLAG GRANULATION PROCESS The Classical granulation process has been employed for a long time, and I do not believe it is necessary to describe it at this time. Free online chat The SLAG -REC project for an innovative direct dry granulation
Slag recycling recovery
There are various processes on the market for the granulation of blast furnace slag. The most important process is cooling in a water bath. The most common methods are the RASA system from Rasa Corporation, the INBA system Fig. 16 from Paul Wurth, a company of the SMS group, and the IJ GRAN system from Danieli-Corus.
Design and Operation of Dry Slag Granulation Pilot Plant
Feb 22, 2019 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
Figure 3 from Prediction of granulated slag properties
A mathematical model of a spinning disk atomizer SDA was developed to produce glass beads from high-temperature molten slag. The model comprises three parts 1 fluid flow model of molten slag on the spinning disk, 2 physical model of ligament formation of slag, and 3 heat transfer model of slag drops dispersed from the ligament.
COMPARATIVE RESULTS OF COPPER FLOTATION FROM
smelter slag are obtained, necessary for further testing the process of flotation concentration. This paper presents the achieved comparative results from the flotation concentration process of smelter slag and granulated smelter slag of reverberatory furnace. Keywords smelter slag, granulation, grinding, flotation, Cu recovery
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.
Granulation E Furnace Slag with Di erent Basicities
Coatings 2020, 10, 372 5 of 14 3. Results and Discussion 3.1. Inuence of Di erent Basicities on the Granulation E ect of Gas Quenching BFS The experimental material was 30 kg, the slag dumping temperature was 1600 C, the nozzle diameter was 3 mm, the slag cooler speed was 5.5 rmin, and the nozzle pressure was 0.2 MPa.
Heat recovery from slag improves energy efficiency of
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
Further processing and granulation of slags with
that no slag, matte, or alloy responds in similar fashion to a granulation practice. This paper addresses three issues, namely Water-granulation of BOF steel slag, without processing it to render it environmentally safe, physically and chemically acceptable for use by the construction industry, and the process economical
Northam Converter Dry Slag Granulation Hatch Ltd
However, a dry slag granulation system had not yet been deployed in the non-ferrous industry. Although it has demonstrated success in the steelmaking industry for decades, adoption of a dry granulation solution in non-ferrous industries has been challenged by the technical risks associated with process uncertainties and by the financial risks ...
Blast Furnace Slag Granulation Ironmaking Our
Slag handling is an important aspect of modern blast furnace operation. Today, blast furnace slag is a saleable product granulated slag sand used as CO 2-friendly substitute of clinker in cement production rather than a difficult and costly waste material.Paul Wurth has developed the INBA slag granulation process, incorporating our proprietary dynamic INBA dewatering drum.
Granulated Blast Furnace Slag an overview
When producing such cement, slag is usually the hardest to grind, and it forms the coarsest portion, while the cement is ground the finest 9. A potential problem is moisture, which occurs in blast furnace slag during the granulation process.
Simulation of primary breakup of molten slag in the gas
Nov 25, 2020 Gas quenching dry slag granulation process is a type of the dry slag granulation DSG method , . It utilizes the kinetic energy of transversal supersonic airflow to break up the molten slag into droplets which are cooled to solid slag particles in the cooler, and the waste heat of slag can be effectively recovered without environmental pollution.
Preface for Thematic Section Slag Granulation SpringerLink
May 31, 2019 As a wet process, water granulation cannot recover high-grade waste heat from molten slags. The process consumes a large amount of water about 1 ton of water per ton of slag is lost through evaporation and may emit acid mist, H 2 S, and SO 2, causing serious air pollution. Furthermore, the wet granulated slag has to be dewatered at a ...
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 ...
DRY SLAG GRANULATION WITH HEAT RECOVERY
The wet granulation process operates with a high water to slag ratio of about 81. 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
Feasibility of Rotary Cup Atomizer for Slag Granulation
1673 to 1823K in a slag temperature, 10gs in a slag charging rate and 0.018kgs in an air mass owrate. After slag was granulated for a couple of minutes, the distribution of slag size in each zone of the receiver 0 to 0.3, 0.3 to 0.4, 0.4 to 0.5, and 0.5 to 0.6m in
Slag Atomising Technology Unlocking Real Value
liquid slag handling and water granulation. This slag treatment method reduces dust creation and water consumption, and also allows for energy recovery from the molten material. Through innovative process designs, slag is now intrinsi-cally valuable as a raw material for a number of other applications e.g. sand blasting, ballast, or roof shingles.