dry slag granulation

The Late-Model Technology Dry Granulator Process Made In ... DH series dry roll press granulator adopts dry rolling technology to compress the powdery materials with moisture content ≤1% into pieces or tablets, then going through the processes of breaking into granules and screening to make the lump materials into granules that meet the requirements…

At the present molten slag from a blast furnace (B.F.) is granulated by impinging much water without any recovery of its much sensible heat (1823K), polluting water and atmosphere. To solve these problems, we studied the dry granulation of molten slag by Rotary Cup Atomizer (RCA), in …

Lots of iron molten slag from blast furnace can be produced during iron making process. It is generally cooled by water quenching method which causes many problems, such as water consumption, serious pollution, energy wasting etc. To solve these problems, much more attention has been paid to various dry granulation methods.

Granulation of titania slag has been identified as a potential viable alternative to the conventional block route. Both wet and dry granulation of titania slag has been investigated. TiO2-rich slag is a suitable feed material for the chloride process if the ilmenite feed material is low in alkaline earth impurities.

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]

Abstract An instantaneous measurement method was developed to measure the surface temperature and surface emissivity of blast furnace slag for investigating dry granulation and waste heat recovery from blast furnace slag.The system was used to measure temperature-gray scale and emissivity-temperature relationships from granular blast furnace slag images captured by a high-speed camera based on ...

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 ...

The difficulties of molten metallurgical slag(including blast furnace slag and steel slag,etc.) heat recovery caused by low thermal conductivity and high enthalpy are ...

Dry Granulation Concept. Dry slag granulation is based on molten slag atomisation using a variable speed rotating cup or dish (see Figure 1). The slag is delivered on to the centre of the cup from a slag runner via a vertical refractory lined pipe. The rotation of the cup forces the slag outwards to the cup lip where it is atomised (see Figure 2).

The CSIRO's Dry Slag Granulation (DSG) process is as a continuous two-step p rocess as shown in Figure 1. The. molten slag is first atomized using a spi nning disc and the fine droplets (< 2 mm ...

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 granulated particles produced during the granulation trials.

of Liquid Slag on a Spinning Disc for a Novel Dry Slag Granulation Process", Progress in Computational Fluid Dynamics, Vol. 10, Nos. 5-6, 2010, pp. 292-299. 7. Y. Pan, P. J. Witt, B. Kuan, and D. Xie, "CFD Simulation of Slag Droplet Formation by a Spinning Disc in Dry Slag Granulation Processes", 8th International Conference on CFD

wet blast furnace slag Grinding Mill China Dry Granulation of Blast Furnace Slag for Heat Recovery Dry Granulation of Blast Furnace Slag for Heat Recovery About 300 . More Info. Slag Grinding And Drying In A Ball Mill lavfwazorg.

@article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N and Hiroshi, N and Koichi, F and Tsukio, I}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten slag discharged from ...

2.3 Dry Slag Granulation Significant research and development has occurred in the area of Dry Slag Granulation (DSG) over the past decades. Development of DSG technologies is driven by the desire to improve safety and sustainability of conventional slag handling methods. The most significant advantage of DSG is that it provides a safer and more

^ Dry slag granulation with slag conveyor. Iron and slag handling. Hot metal treatment and handling, engineering, and equipment ; Cupola furnace slag dry granulation ; Pig-casting facilities ; Laser-controlled iron pouring units . Sand and casting separation, cooling, and treatment. Shake-out grids ; Pre-separating conveyors

[1] P. Yuhua, P.J. Witt, X. Dongsheng, CFD simulation of free surface flow and heat transfer of liquid slag on a spinning disc for a novel dry slag granulation process, Progress in Computational Fluid Dynamics, 10 (2010) 292-299. DOI: 10.1504/pcfd.2010.035362

Aug 23, 2016· 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.

Experimental study of rotating dry slag granulation unit: Operating regimes, particle size analysis and scale up. Download. Related Papers. 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.

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

Molten slag from pyrometallurgical furnaces is tapped at high temperature, carrying a large amount of thermal energy. But the common slag dumping and water granulation methods used for slag treatment do not permit energy recovery. Furthermore, water is present in these processes and while operations are designed to minimize risks of steam explosions, from the contact of slag with water, these ...

Process flow diagram for SVAI/Primetals Technologies' dry slag granulation system with heat recovery and steam generation[42,43] (color figure online) Samples of wet and dry granulated iron blast ...

Dry slag granulation has been developed and commercialized over the past two decades with a focus on addressing the downfalls of traditional slag-handling methods. The three most common dry slag granulation categories are: 1. Mechanical granulation—Molten slag is broken up,

Dry Slag Granulation With Heat Recovery. Ian J. McDonald. Download PDF. View Sample Page. Abstract: Each year approximately 400 million tons of blast furnace slag are produced worldwide. The slag, which has a tapping temperature of around 1,500°C, is normally used as a substitute for cement clinker or as an aggregate material in road ...

Jan 30, 2017· Blast furnace slag obtained from water quenching is generally used for cement production. However, harmful waste, such as SO 2, H 2 S and heavy metals, is discharged into the surrounding environment after water quenching. Dry granulation is an environmentally-friendly treatment, and the performance of dry granulation slag cement is investigated in the study.

Wet slag granulation process Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Wet slag granulation process, quarry, aggregate, and different kinds of minerals.

Dry Granulation of Blast Furnace Slag for Heat Recovery Blast furnace slag is known as a by-product from the production of hot metal at integrated steel and iron mills. Approximately 300 kg of this liquid slag with a temperature of about 1500°C is tapped together with each ton hot metal.

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.

Jun 01, 2016· A prototype dry slag granulation system was proposed and designed in commercial scale. • The input and output flows of each slag-treatment system were identified. • Life cycle assessment on the dry slag granulation method and water quenching methods was carried out. • Economic costs and returns during the lifetime of slag were calculated.

Aug 09, 2014· The 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. The atomization is done using a rotary cup air blast atomizer. The particles cool as they travel through …