Dry slag granulation could make a fundamental change in slag treatment. In this new approach, molten slag is atomized under centrifugal forces on a spinning disc, and the droplets generated are quenched and solidified quickly using air, with simultaneous heat recovery.
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.
granulation and steel slag pyrolytic self-slaking have made progress and are applied in a number of large steelmaking companies in China. Current researches and 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-
'Dry' granulation (atomisation) is emerging as an alternative technology, the resulting solid product does not require drying, and possibilities exist for recovering heat energy from the hot slag.
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 example are Etruscan metallurgical slags, tens of meters thick in some places, which extended
The energy in slag is lost through dumping and water granulation processes, and where slag is sold as a by-product, it is for its chemical content only. Here, dry granulation processes also offer advantages including the production of by-products which hold value in both their chemical content and physical properties and heat recovery.
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.
The process of the molten slag heat recovery consists of two parts, namely dry granulation and heat extraction (Figure 1). Two types of dry granulation techniques are commonly seen.
Granulation with granulation basin layoutThe molten slag falls from the hot runner and hits the granulation water jets of the blowing box. The impact point of the slag stream and the granulation water jets is located just above the water level in the granulation basin. The granulation water breaks up the slag stream and helps to
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.
saved. In summary dry granulation of blast furnace slag allows an environmental friendly and sustainable subsequent processing for one of the last big heat recovery potentials at a modern blast furnace.  References  McDonald, I., Long, E., Werner, A. & Most, D. (2010) Dry slag granulation - The environmental friendly way to making cement.
CSIRO's dry slag granulation process. The 2D CFD model can be used to give timely predictions that allow one to explore and select appropriate design and operating conditions for producing a slag film that will ultimately break up into droplets of desired size; and the
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Dry Granulation of Molten Slag using a Rotating Multi-Nozzle Cup Atomizer and Characterization of Slag Particles. ... Hong Wang, Xun Zhu, Qiang Liao, Kai Li, Cold experiment of slag centrifugal granulation by rotary atomizer: Effect ... Experimental investigation of glass content of blast furnace slag by dry granulation, Environmental ...
HomeBlast furnace slag granulation. Matching products. Water Treatment and Waste Water treatment Design; ... At present, about 78% of Europe's cement production is from dry process kilns, a further 16% of production is accounted for by semi-dry and semi-wet process kilns, with the remainder of European production, about 6%, coming from wet ...
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 …
Dry Slag Granulation with Waste Heat Recovery 1. MINERALS DOWN UNDER NATIONAL RESEARCH FLAGSHIP Current Status & Future Direction of CSIRO's Dry Slag Granulation Process with waste heat recovery ICST 2012, Dresden, Germany: 1-3 October, 2012 Sharif Jahanshahi and Dongsheng Xie 2.
Siemens Metals Technologies and Baosteel Engineering & Technology Group Co. Ltd., a subsidiary of the Baosteel group, will be cooperating in future in the granulation of slag produced in BOF converters and electric arc furnaces.
Blast furnace slag granulation plant technology ... dewatering, dry slag granulation technology has been ... Two slag granulation plant arrangements are illustrated in Figure 5. Both systems are identical with regard to the granulation section and recycling of granulation water.
The CSIRO's Dry Slag Granulation (DSG) process is as a continuous -step prtwo ocess as shown in Figure 1. The molten slag is first atomized using a spinning disc and the fine droplets (< 2 mm) produced contact with flowing air and
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.
Proceedings of the Fourth International Slag Valorisation Symposium Zero Waste 15-17 April 2015 Leuven, Belgium Editors Annelies Malfliet and Yiannis Pontikes
Dry granulation. The dry granulation process is used to form granules without a liquid solution because the product granulated may be sensitive to moisture and heat. Forming granules without moisture requires compacting and densifying the powders. In this process the primary powder particles are aggregated under high pressure.
The process, known as Dry Slag Granulation, also reduces water use and greenhouse gas emissions, and is the focus of an agreement signed by CSIRO and the Beijing MCC Equipment Research & Design Corporation (MCCE).
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.
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.
Dry Granulation of Blast Furnace Slag for Energy Recovery Around 300 kg of liquid slag is produced as byproduct while producing one ton of hot metal in a blast furnace (BF).This slag is at a temperature of around 1500 deg C and has a sensible heat of approximately 400 M Cal per ton.
THE VALUE OF ENERGY & RESOURCE ... Slag Valorization –DSG Granulation & Waste Heat Recovery Page 9 voestalpine BF#A Start-Up May 2017 Dry Slag granulation a development that has been in the pipeline for many years Current initiative is backed by the ... o Dry slag product properties
Nov 19, 2014· blast furnace slag granulation VNIIMT technology
Dry granulation of titania slag Description and operation of the dry granulation plant Dry granulation of titania slag was carried out at the 500 kW DC furnace on site. In this instance compressed air was used as granulation medium. Two rectangular guide plates placed on the slag taphole side of the furnace channelled