BLAST FURNACE SLAG GRANULATION. Granulation, dewatering and storage of the slag can be done adjacent to the furnace or can be split up to suit available plant space or logistics. Modern condensation concepts and closed loop water circuits ensure effective environmental control.The INBA system with steam condensation is officially recognised as a Best Available Technology (BAT).
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.
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 slag may be valorized over traditional processing methods.
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 replacement for Portland cement. The combination of waste heat recovery and conversion of slag into a saleable
ASO is the first to develop a complete solution for dry granulation to solve slag handling and treatment in EAFs. Fig. 2 is a schematic representation of the original idea (4-5) at the basis of the SLAG-REC ® system. Fig. 2 – Schematic representation of the SLAG-REC ® system.
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. Heat is recovered from the slag in the following ways. As the spray of slag particles moves outwards from the atomizer, heat is lost by radiation to the vessel and by convection to the air moving through the vessel.
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 …
Nov 06, 2019· Dry slag granulation: producing valuable by-products from waste. Our sustainable, dry method for slag granulation derives value from waste and has the potential to transform the metal and cement industries. Water-intensive slag waste processing. Slag is a high volume by-product from the metal smelting process.
Using dry slag granulation at integrated steel and iron mills enables the usage of the sensible heat of the blast furnace slag. Therefore, a new plant has been installed by Siemens VAI in cooperation with Montanuniversitaet Leoben at the Chair of Thermal Processing …