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slag hauling and production of higher value byproduct. Wet granulation allows for fast quenching of molten slag and production of high value glassy material, which, for BF slag, demonstrates desirable cementitious properties post milling. BF slag is typically devoid of metal, making water granulation a manageable process from a safety perspective.
ing the dry slag granulation system with heat recovery. The dry slag granulation process is based on the mixing of steel spheres and liquid slag. This allows transferring almost all of the energy of the liquid slag into a mixture at high temperature which is then subject to energy recovery. PRODUCTION
To obtain a good slag reactivity or hydraulicity, the slag melt needs to be rapidly cooled or quenched below 800 °C in order to prevent the crystallization of merwinite and melilite. To cool and fragment the slag a granulation process can be applied in which molten slag is subjected to jet streams of water or air under pressure.
them, slag granulation process by a centrifugal force, which is also called DCG process, has proved its advantages due to its simpleness, controllability, less energy consumption and more sensible heat recovery in the past –9) In this Modeling on Dry Centrifugal Granulation Process of Molten Blast Furnace Slag
Granulation is the process of collecting particles together by creating bonds between them. Bonds are formed by compression or by using a binding agent. If one were to make tablets from granulated sugar versus powdered sugar, for example, powdered sugar would be
Feb 22, 1983· Process for granulation of slag . United States Patent . Abstract: The granulation of molten material, blast furnace slag for example, is accomplished by wetting the slag with a stream of water and thereafter transporting the thus formed granules away from the point of granulation with the water stream. ... Download PDF PDF help ...
Dry slag granulation is destined to replace conventional water granulation of molten slags in the not too distant future, creating a paradigm shift in the history of slag treatment. In this dry process, molten slag is atomised under centrifugal forces on a spinning disc and the slag droplets generated are quenched and solidified quickly using air.
May 05, 2013· Concept of slag granulation. The process of slag granulation involves pouring the molten slag through a high pressure water spray in a granulation head, located in close proximity to the blast furnace. Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to take place.
The combined avoided GHG emissions for dry granulation over wet granulation were 87 kg CO 2 e/t slag, and 867 kg CO 2 e/t slag compared to air cooling of slag. Calculation of these process credits ...
Wet granulation of titania slag Description and operation of the wet granulation plant Wet granulation of titania slag was carried out at the research and development facilities of Exxaro in Pretoria. Ilmenite was smelted in the MW DC furnace at this facility. The typical titania slag tap mass was approximately one ton.
The present paper covers some of the fundamental aspects of the reactions taking place during dry granulation of molten slag. In particular, the cut in sulphur emission from slag during DSG as compared with conventional wet granulation process and the dynamics of slag .
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 2friendly substitute of clinker in cement production) rather than a difficult and costly waste Wurth has developed the INBA ® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum.
that no slag, matte, or alloy responds in similar fashion to a granulation practice. This paper addresses three issues, namely: • Watergranulation of BOF steel slag, without processing it to render it environmentally safe, physically and chemically acceptable for use by the construction industry, and the process economical
The slag granulation process and freesurface film flow on the rotary disk (a) a typical static image from high speed video recording of the slag granulation by a rotary disk in CSIRO''s dry slag granulation process, (b) schematic of the film thickness profile of molten slag on the rotary disk.
slag granulation process The zenith Mining Machine is custom designed to reduce your operating costs and increase your mine production ... PDF Granulation of titania slag. Request Quotation. Download PDF PDF help. US Patent References: : Apparatus for ... In a process for the granulation of molten slag, ... Request Quotation. Hot ...
In the granulation section, the liquid slag is ''quenched'' by pouring onto it an excess water stream. The evaporated water will be condensed in a condensing tower located above the granulation tank. This proven granulation process ensures economic granulation and produces valuable and consistent properties in the blast furnace slag.
of Liquid Slag on a Spinning Disc for a Novel Dry Slag Granulation Process", Progress in Computational Fluid Dynamics, Vol. 10, Nos. 56, 2010, pp. 292299. 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
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:
Paper Slag Valorisation Symposium. In this paper, the dry granulation process flow and semi industrial ... valorisation are 21% for steel slags and 76% for blast furnace slags.
slag granulation process pdf Shanghai Xuanshi Machinery. SLAG GRANULATION PROCESS The Classical granulation process has been employed for a long time, and I do not believe it is necessary to describe it at this time » Free online chat! The SLAG REC project for an innovative direct dry granulation of, Slag granulation plant russianpatents
A potential problem is moisture, which occurs in blast furnace slag during the granulation process. The presence of moisture requires dewatering the blast furnace slag before using it as an additive or as a mineral admixture to Portland cement [10].
to easily penetrate the slag layer during addition as well as allow for a rapid melting and dissolution in the hot metal bath. The granulated product has a homogeneous composition identical to the metal fed into the granulator and without the variations in composition that is obtained when casting in sandpits. 4 GRANSHOT metal granulation process
Zhou et al. [12] in the literature is however not available. The range of operating carried out an experimental analysis of the dry slag granulation conditions under which particle formation is ensured is also not process using blast furnace slag and reported the effect of slag known.
Proceedings of the Fourth International Slag Valorisation Symposium Zero Waste 1517 April 2015 Leuven, Belgium Editors Annelies Malfliet and Yiannis Pontikes
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