blast furnace slag granulation 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.
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.
A new dry slag granulation method could be used commercially within two to three years, providing a sustainable solution for treating the many millions of tons of molten slag produced globally ...
THE VALUE OF ENERGY & RESOURCE ... Dry Slag granulation a development that has been in the pipeline for many years Current initiative is backed by the drive to recover energy Prototype plant built at voestalpine ... o Dry slag product properties
Jun 4, 2015 The dry slag granulation system injects steel ball into the liquid slag and .. diameter of 600 mm, length of 200 mm drum speed rotation was 27 turns per minute (equivalent speed rotation of in Continuous filtering and evacuation: The INBA system is a dynamic granulation …
Paper - Slag Valorisation Symposium. In this paper, the dry granulation process flow and semi- industrial ... valorisation are 21% for steel slags and 76% for blast furnace slags.
Keywords: dry granulation, slag, spinning disc, CFD, modelling, simulation Slags generated in metallurgical industry are high volume by-products or wastes containing a large amount of heat.
The steel slag is collected into a steel slag ladle, and the ladle is transported to a tilt-type equipment by a hoisting device; the said tilt-type equipment is started to feed the steel slag into a metallurgy granulator, and the steel slag is granulated into granulated slag by the said granulator; said granulated slag is fed into a drying room by a lifting-transporting belt, in which the ...
Slag Waste Heat Recovery and Utilisation (4D1) The review established that dry slag granulation is a preferred approach. ... Steel Port Kembla to identify and rank possible uses of waste heat at plants .
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 slags into a glassy phase that is a suitable
developments are focusing on the dry granulation of molten BF slag with high efficiency of heat recovery. In this paper, the dry granulation process flow and semi-
blast furnace slag granulation plant ... A new dry slag granulation ... A smelting plant producing one-million tons a year of steel also generates about 300 000 t/y of slag. Although some blast furnace ... » Learn More. granulation of slag mechanism - Crusher South Africa.
Dry slag granulation: a sustainable process for full value ... A novel dry method for slag granulation could help the cement, iron and steel industries develop sustainable practices and derive value from waste. » Learn More. Some Fundamental Aspects of the Dry slag granulation process.
The invention is particularly applicable to the granulation of slag tapped from an iron blast furnace. The granulated slag can be used as a Portland cement substitute in the manufacture of concrete. GB-B-2148330 discloses an apparatus and method for the granulation of slag.
Inspiring the Future by Driving Technology Media Summit Metals and Mining Technologies Kolkata, India, May 10-12, 2011 Andreas Flick, Siemens VAI ... Energy recovery from dry slag granulation. Reduced emissions and recovered energy.
In this study, the effectiveness of dry slag granulation was studied using a mixture of rosin and paraffin wax as an analogue for blast furnace slag. The effects of various parameters such as rotational speed of the disc, diameter of the disc and flow rate of the molten liquid have been studied.
Slag Granulation Granulation of Blast Furnace slag is a very attractive option since it turns the Blast Furnace slag into a valuable by–product that can be sold to the cement industry Blast Furnaces normally generate 200 to 400 kg of liquid slag for every ton of hot metal produced.
Using dry slag granulation at integrated steel and iron mills will gain access to the sensible heat of the blast furnace slag. The recovered energy can be used for the production of steam or electricity or for other useful preheating processes.
Electric Arc Furnace Slag, Dry Granulation, EAF Slag Recycling Abstract The iron and steel industry has since the most remote times produced emissions and waste products which sometimes have been successfully used in different fields of application. A good
Dec 01, 2014· Granulation is the act or process of forming or crystallizing into grains. Granules typically have a size range between 0.2 to 4.0 mm depending on their subsequent use.
Nov 19, 2014· blast furnace slag granulation VNIIMT technology
The high-temperature blast furnace slag is conventionally treated by water quenching (WQ) method with enormous waste heat unrecovered. To address this issue, dry slag granulation (DSG) technology has been proposed to recover the waste heat from molten slag.
The CSIRO dry slag granulation process is fitted to blast furnaces and includes a spinning disc and granulation chamber that separates molten slag into droplets under centrifugal forces. It uses air to quench and solidify the droplets, and extracts a granulated slag product as well as heated air.
Blast furnace slag granulation. ... granulated blast furnace slag from iron production, or fly ash from coal-fired power generation. Blast furnace slag (BFS, ... 6%, coming from wet process kilns. The wet process kilns operating in Europe are generally expected to be converted to dry process kiln systems when renewed, as are semi-dry and semi ...
The aim of this paper is to improve the dry granulation equipment. In the process of dry cooling granulation of BFS, the uniformity of the internal wind field has a great influence on the cooling ...
Traditional slag handling methods of slow air cooling and water granulation do not allow for recovery of energy from slag. As such, there have recently been numerous studies into slag granulation and energy recovery technologies to enable the use of slag as a waste heat resource, with dry slag granulation and subsequent heat recovery being ...
Dry slag granulation with heat recovery Primetals Technologies, voestalpine Stahl, the FEhS – Building Materials Institute and the University of Leoben joined forces in an R&D program to develop a new dry-granulation technology using air to cool molten slag and recover the lost heat energy.
Slag Granulation Process Pdf - gaytripackaging.co.in. of glass content of blast furnace slag by dry granulation ... Dry granulation, as a new process of molten blast furnace slag (BFS) treatment, is …