Paul Wurth
Paul Wurth has developed the INBA® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum. With about 300 references, it is the most popular and effective route of processing blast furnace slag in the world today. The process is highly flexible; and the compact sub-plant can be applied to any furnace configuration.
Tapping hot slag for energy
The slag runner that feeds the pilot plant at voestalpine Stahl in Linz, Austria Thinking big. If only half of the blast furnaces operating today were to switch from wet to dry-type granulation of their entire slag output, the energy recovered and saved would be enough to supply more than 3.5 million s with sustainable energy all year.
Slag Granulation with Continuous Dewatering …
Molten slag is often considered as a waste material when it is cast into slag pits. INBA slag granulation and dewatering system is the proven route for converting molten slag into a value added product for the cement industry. The INBA system comprises two main components – the granulation unit which utilizes a granulation
Energy–environment–economy evaluations of
DOI: 10.1016/J.APENERGY.2016.03.079 Corpus ID: 112213096; Energy–environment–economy evaluations of commercial scale systems for blast furnace slag treatment: Dry slag granulation vs. water quenching
Applied Thermal Engineering
slag and ferroalloy slag granulation, the main mass fraction peak was located in the range of 2.44– 3.14 mm. For copper slag granulation, the main mass fraction peak moved to the range of small ...
Dry Granulation of Slags
CAMP-ISIJ, vol.18 (2005), pp.1088-1091 The experimental procedure involved melting the slag in a graphite crucible (Φ100 ID x 200 mm) using an induction furnace to heat the slag to the desired ...
Economic and environmental evaluation of slag dry granulation
Wet granulation Dry granulation Fig. 18 Comparison of estimated capital and operating costs for the integrated dry slag granulation and heat recovery process with conventional wet granulation for ...
Slag Dry Granulation | Tenova
Our dry slag granulation technology transforms molten slag from steel furnaces into granules using air stream, eliminating the need for water.. The flexibility of the process allows obtaining granules of different sizes and with different ratio …
Copper Slag
Fayalite is the main phase of copper slag and a type of Fe silicate glass that is composed of a polymerized network of silicate tetrahedrons, in which SiO 2 and FeO are generally considered as network formers and modifiers, respectively. The structure of fayalite is shown in Fig. 13 [107].In iron silicate glass, O 2− exists in the form of bridging and non-bridging oxygens (BOs and …
Thermodynamic analysis of thermal energy recovery and …
By TER-DR2, for every ton of copper slag, 0.489 t DRI, 67.3 m3 CO and 67.3 m3 H 2 are acquired. Keywords Copper slag Waste heat recovery Direct reduction Thermodynamic compass Introduction As a widely focused metallurgical slag, copper slag con-tains large amount of iron and waste energy. The temper-ature of molten copper slag is above 1573 K ...
Hatch Ironmaking Technologies | Dry Slag Granulation
Abrasion is one leading cause of stave wear and requires interim and major shutdowns to fix or rebuild. Hatch's wear-resistant staves provide an integrated hard surface that resists abrasion and is many orders of magnitude harder than a typical copper, cast iron, or …
Blast furnace slag obtained from dry granulation method as a component
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 …
Granulation and Heat Recovery from Metallurgical Slags
Granulation is the most widespread method of slag handling, employed to a number of metals as well as practically all metallurgical slags such as copper, ferroalloy [14, 18], and steel [19, 20], and most widely for the BF slags . The principal reason for granulation is to achieve high cooling …
Advanced Tech for Efficient By-Product Recycling
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 …
'Dry'Granulation of Slags for Producing Cement …
FIG 2 - Pilot-scale dry granulation (atomization) apparatus, with raised induction furnace (housing graphite crucible). Slag is tapped below onto a rotating copper disc, and the solidified slag ...
Experimental investigation on molten slag granulation for …
Dry granulation technology can be applied to granulate molten metallurgical slags with different viscosity and surface tension. Ligament formation for blast furnace slag, ferroalloy slag and copper slag granulation can obtain comparatively uniform solid slag particles, which is beneficial to heat transfer or chemical reaction.
Granulation and Heat Recovery from Metallurgical Slags
In: Con- 7 crete international. American Concrete Institute, p 11 40. Jahanshahi S, Xie D (2012) Current status and future direction of 17. Das B et al (2010) Characterization and recovery of copper CSIRO's dry slag granulation process with …
Granulation and Heat Recovery from Metallurgical Slags
To save the thermal energy and retain the added value of slag, dry granulation could be an attractive and eco-friendly option. ... The temperature of copper slag derived from furnaces is >1300 °C ...
Performance of Ground Granulated Iron Silicate Slag as a
2.1 Effect of Prolonged Grinding. A sample of water-granulated copper slag from Boliden Rönnskär, Sweden, was used in the present study. The slag was a fumed and settled iron silicate copper slag sampled after the dewatering process (as illustrated in the flow sheet of Isaksson et al. []).The chemical composition of the slag was determined by X-ray fluorescence …
Sustainable and Comprehensive Utilization of Copper Slag: …
Annually more than 400 Mt of metallurgical slags are produced worldwide [1,2,3,4,5].From the annual Cu concentrate smelter production capacity, which is equal to around 21 Mt of copper metal in 2021, it can be estimated that more than 45 Mt of CUS were produced from primary sources assuming a slag to copper ratio of 2.2 [3, 4].Only 15% of the CUS …
Advances in recovery of valuable metals and waste heat …
The granulation of copper slag is affected by the properties of the slag and the flow rate, falling angle, and falling velocity during the granulation. ... If most of the energy …
Thermodynamic analysis of thermal energy recovery and …
For dry granulation of blast furnace slag, although some pilot testing had been performed, there was no application in metallurgical industry. Due to the difference in density, viscosity and surface tension, the granulation characteristics are different. Granulation characteristics of copper slag were studied by Liu . There was just a small ...
Northam Converter Dry Slag Granulation
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 ...
Experimental study of rotating dry slag granulation unit: …
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. Different ranges of operating conditions in terms of ...
Dry Slag Granulation: A Path to Improving the Safety and
Abstract. Slag dumping and water granulation are the most commonly used slag treatment methods in the metallurgical industries. In both processes, water is present (by …
Experimental investigation on molten slag granulation for …
For copper slag granulation, the main mass fraction peak moved to the range of small diameter with an increase in rotating speed. ... Simulation of ligament mode breakup of molten slag by spinning disk in the dry granulation process. Appl. Therm. Eng., 84 (2015), pp. 437-447. View PDF View article View in Scopus Google Scholar. Cited by (0)
On Hydrodynamics of Dry Granulation of LD/BOF Slag …
The LD/BOF slag, in its granulated form, has many applications in construction industry, as reviewed by Das et al. [], like roads, railway track ballasts, road stones, etc.Two broadly classified methods of slag granulation, as discussed by Jahanshahi et al. in 2011 [] and in 2012 [], are wet and dry granulation methods.Between these, the Dry Slag Granulation …
Preface for Thematic Section: Slag Granulation
The fayalite-type slags produced by the copper/nickel smelting and converting processes are not cementitious, and their uses include abrasive material for sandblasting and ball milling. ... The next work by Cooksey et al. provides an overview of the design and operation of a dry slag granulation pilot plant at CSIRO. This overview covers some ...
Dry slag granulation: producing valuable by …
Slag is a high volume by-product from the metal smelting process. Globally, hundreds of millions of tonnes of molten slags are produced each year. Close-up of molten steal showing spiral of glowing molten metal. Slag is commonly air …
Recent Developments in Commercial Scale Dry Slag …
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 …
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