vai dry slag granulation

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(PDF) Dry slag granulation with integrated heat recovery

Although Pickering's plant design for combined dry granulation and heat recovery was only a proposal, Davy McKee, and then VAI-UK [37][38] [39], continued development [7] of spinning cup dry

AISTech2018 Dry Slag Granulation – The Future Way to

Dry slag granulation is based on molten slag atomization using a variable speed rotating cup or dish (see Fig. 1). The slag is fed from the slag runner via a vertical refractory lined pipe directly onto the center of the rotating cup. The rotation of the cup accelerates the slag and forces the slag outwards to the cup lip where it is atomized (see Fig. 2). Figure 2: Atomizing Slag on Rotating

Dry Slag Granulation: A Path to Improving the Safety and

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. Dry granulation, therefore, augments the methods by which

DRY SLAG GRANULATION WITH HEAT RECOVERY*

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). Simulation and calculation of the rotating cup gives as a result a

Some Fundamental Aspects of Dry Slag Granulation Process

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 are cooled before colliding with the roof of the granulator and bouncing back before joining the cyclonic section of the reactor where further cooling and

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‘Dry’ Granulation of Slags for Producing Cement Binder

The authors will present preliminary results from slag atomisation/dry granulation testwork (0.5 – 2.5 kg scale) and associated modelling studies, conducted using a ‘synthetic’ and industrial ironmaking slag. Outcomes from a techno-economic study on production of cement utilising wet or dry atomised slag granulate will also be discussed in detail. Related products. CollectionMember

Dry Granulation to Provide a Sustainable Option for Slag

Compared with conventional wet granulation, the dry slag granulation process offers a more sustainable approach for processing molten slags through saving water, reducing pollution, as well as recovering waste heat to reduce energy consumption, hence GHG emissions. FORMAL CITATION: Xie, D, Jahanshahi, S and Norgate, T, 2010. Dry granulation to provide a sustainable option for slag

Hatch Ironmaking Technologies | Dry Slag Granulation

Dry Slag Granulation. Water granulation is the most commonly used method to handle blast furnace slag and requires a granulation and a dewatering step to process the slag. In water granulation, the energy in the slag is lost from water evaporation and cooling and is difficult or impossible to recover. Hatch’s dry slag granulation process uses air to directly granulate slag. A stream of hot

granulating slag dryer in ethiopia Felona Heavy Machinery

Dry slag granulation producing valuable byproducts. Nov 06 2019 · Slag is a high volume byproduct from the metal smelting process Globally hundreds of millions of tonnes of molten slags are produced each year Slag is commonly aircooled in large pits and landfilled or used for roadbased materials after crushing and screening In some modern integrated . More Details; slag dryer equipment price

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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.

GB2528972B Slag granulation system Google Patents

slag granulation slag system Prior art date 2014-08-08 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number GB1414064.4A Other versions GB2528972A (en GB201414064D0 (en Inventor James Mcdonald Ian Current Assignee (The listed

slag granulation mining

dry granulation copper slag gujaratgenomicsslag granulation definition English. Siemens VAI wants to build a pilot plant for dry slag granulation for testing the possibility of integrated he&slag granulation

The Flash-Reactor as Special Melting Unit for Powdery

Siemens VAI wants to build a pilot plant for dry slag granulation for testing the possibility of integrated heat recovery, needing small amounts of liquid slag for the test performance. This is where the Flash-Reactor enters the project as upstream melting unit. Heat recovery during slag granulation provides energy recovery of 20 MW th or 6 MW el regarded to a slag mass flow of 1 t/min. Tests

Abstract: Dry Granulation of Blast Furnace Slag for Heat

These tests were part of the ZeroWaste project of Siemens VAI. Both research activities did not focus on heat recovery due to the lack of political pressure at this time. It could be shown that dry granulation for producing glassy blast furnace slag is also feasible with the “Rotating Cup”. [1] Figure 2: Trials at Redcar (left) and Vitkovice (right) [1] The new lab rig at the University of

wet slag granulation process MC World

AISTech2018 Dry Slag Granulation The Future Way to Granulate Blast Furnace Slag 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. Blast Furnace Slag Granulation at the Cast House – IspatGuru . 5/5/2013 Blast Furnace Slag

crusher for granulation

Global Slag Knowledge Base

Paper 7 Dry slag granulation with heat recovery an update: Ian McDonald: Siemens VAI Metals Technologies. Paper 8 Dry Slag Granulation: Operational results from the first full scale pilot plant: Horst Kappes: Daniel Michels; Paul Wurth. Paper 9 Effective slag management operations at Binani Cement, Dubai: Anil Parashar: Binani Cement Factory LLC . Paper 10 Low flammability reviews of EcoSafe

cement electric eaf slag granulation plant

dry slag granulation the environmentally friendly way to . the main challenge is to find a way to recover the energy from the slag by a compatible granulation process while producing a slag product that fulfils all of the quality requirements of the cement industry. this project is a major r&d exercise now being undertaken by siemens vai in conjunction with industrial and scientific partners

Development of Low-Emission Integrated Steelmaking

05/02/2015· Dry slag granulation (DSG) could make a fundamental change in slag treatment. In this new approach, molten slag is atomised under centrifugal forces on a spinning disc, and the droplets generated are quenched and solidified quickly using air, with simultaneous heat recovery. The process produces solid slag granules suitable for use as a supplementary cementitious material () and

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(PDF) Dry granulation of slags turning waste into

The liquid blast furnace slag is made into high-temperature furnace slag particles through dry granulation method. The scrapped tire powder exchanges heat with slag particles via direct contact

Dry Granulation to Provide a Sustainable Option for

WO2016020253A1 Slag granulation system Google

A method of controlling a supply of coolant gas to a dry slag granulation system, the system comprising: a rotary atomising granulator; a slag receptacle, for supporting a slag bed which is formed thereon when slag particles are expelled from the granulator, the slag receptacle comprising a plurality of cooling inlets for cooling respective zones of the slag bed; and at least one height

GB2528972B Slag granulation system Google Patents

New spinning slag granulation method will save energy

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

DRY SLAG GRANULATION SYSTEM AND METHOD -

18/11/2013· A dry slag granulation system comprising a rotary atomising granulator (6) and a tundish (3); wherein the granulator comprises a cup or disk (5); wherein the tundish comprises a delivery outlet (4), an overflow outlet (7) and a set of moveable mounts (8a, 8b); and wherein the device further comprises at least one of a tundish weight sensor, a granulator drive motor power sensor (13), a

Dry Slag Granulation with Waste Heat Recovery

09/08/2016· CSIRO’s Dry Slag Granulation Process Technical Challenges – Optimum disc and reactor design – Handling of hot granules – Compact reactor for efficient recovery of high grade waste heat and lower capital cost Concept Development 2006/7 Motor Air Hotair >600 C Discharge 500 C 100 C Slag 1500 C Air ICST 2012, Dresden 6 7.

Modeling on Dry Centrifugal Granulation Process of Molten

dry granulation process of molten slag which can solves the problems mentioned above to a large extent. Different kinds of dry granulation techniques have been proposed and investigated. Typical examples of these processes include granulation by cooling drum, mechanical stirrer, rolling drum, high speed air and centrifugal force etc.1,2) Among them, slag granulation process by a centrifugal

Feasibility of Rotary Cup Atomizer for Slag Granulation

The point is that the dry slag granulation with quenching is necessary to solve the problems above men-tioned because it keeps slag property as a raw material of cement. Furthermore, it is expected that slag particle diam- eter can be controlled, corresponding to the requirement of practical use. For this purpose, the various atomizers were invented in the past4,5); mainly, pressure atomizers

Granulation of titania slag SAIMM

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. These guide plates (3 mm thickness) were 4.5 m high and 7.2 m in length. The guide plates open up from