slag granulation process pdf

Request PDF | Simulation experimental research of granulation process for iron slag | Liquid paraffin instead of molten slag was broken by rotary cup for simulating blast furnace slag granulation ...

Water granulated slag for fine aggregate of concrete differs from water granulated slag for cement, in that a high density granulated slag with a unit weight kg/l or more is demanded for use in concrete. Since many closed pores exist in water granulated slag, it is necessary to reduce the

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 ...

28 Full PDFs related to this paper. Read Paper. 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.

vi) Slag Granulation Plant (SGP) / Slag Dumping Yard: During the process of iron making, the impurities are fluxed and removed as slag. The hot liquid slag is made into slag granules by means of high pressure water jets in the Slag Granulation Plant in the Cast House itself (sometimes separate SGP is loed at a distance from the furnace proper).

The wet granulation process operates with a high water to slag ratio of about 8:1. This wet process is quite accepting to fluctuations in the quantity and properties of the slag, however the wet process has the following drawbacks: • Despite mechanical dewatering in drums, silos or heaps, a residual moisture of

There are various processes on the market for the granulation of blast furnace slag. The most important process is cooling in a water bath. The most common methods are the RASA system from Rasa Corporation, the INBA system (Fig. 16) from Paul Wurth, a company of the SMS group, and the IJ GRAN system from DanieliCorus.

The average size of granules of slag produced in the abovedescribed method is known to be partly a direct function of the temperature of the water with which the molten slag is mixed. Thus, the average size of the slag particles formed during the granulation process will increase with an increase in the temperature of the granulation water.

slag temperature at granulation can, therefore, be expected to have been around 1,550°C, and 36 tons of slag were granulated while 4 tons of freezeon slag remained in the slag pot. The exact cooling rate during granulation is unknown but depends on granule size. Larger slag granules .

At the present molten slag from a blast furnace () is granulated by impinging much water without any recovery of its much sensible heat (1 823 K), polluting water and atmosphere. To solve these problems, we studied the dry granulation of molten slag by Rotary Cup Atomizer (RCA), in which the influence of the rotating speed of the RCA on slag drop size was mainly examined.

vi) Slag Granulation Plant (SGP) / Slag Dumping Yard: During the process of iron making, the impurities are fluxed and removed as slag. The hot liquid slag is made into slag granules by means of high pressure water jets in the Slag Granulation Plant in the Cast House itself

The process slag of Outokumpu Tornio Works has a conductivity of 50 70 S/m calculated by the Johnston formula. Ferrochrome slag products The ferrochrome slag products are granulated slag as well as classified slag products made by crushing and screening. The main part of slag is granulated.

The wet granulation process operates with a high water to slag ratio of about 8:1. The advantage of the wet process is that it is accepting wide fluctuations in the mass flow and physical/chemical properties of the slag. However, the wet process faces also significant disadvantages:

continuous slag solidifiion process to obtain a shape suitable for sensible heat recovery was investigated. ... from blast furnace slag, the air granulation method, 8,9) rotating drum granulation method,10) and stirring granulation method11) were examined with practical scale equipment.

28 Full PDFs related to this paper. Read Paper. 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.

General slag granulation, on the other hand, is extensively applied, although in some cases crudely, with disastrous effects, as a result of not recognising the high heat capacities prevalent in slags. Thus, purposedesigned granulation and solidifiion processes are discussed, taking

Molten matte or slag is water granulated by feeding molten matte or slag through a launder to a granulator tank. The tank includes sloping walls and is equipped with adjustable overflow weirs and one or more of spray nozzles. These nozzles are positioned such that the water that they emit impacts on substantially all of the molten matte or slag that is fed to the granulator tank.

tergranulation of blast furnace slag was enhanced and the entire slag is effectively utilized. When compared with the case of blast furnace slag, effective utilization rate of steel slag was not so high due to the problem of expansion caused by free lime and so on. At present, steel slag is primarily used as road bed material and

cement electric eaf slag granulation plant · electric arc furnace slag in cement – slag industry news events 1 oct 2007 the blast furnace slag after granulation and grinding finds extensive use in cement a small portion of the sample that tends to get enriched in the coarser to address global climatic change lima peru 13 october enriched in the coarser to

furnace slag (BF slag) in Japan exceeds 24 million t (all units herein are metric).1) As seen in Fig. 1, BF slag is divided into aircooled slag and granulated slag. The former is produced by letting molten slag cool in open pits or yards, and the latter by rapidly cooling molten slag with water jet; the former looks like crushed stone and the