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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.
that no slag, matte, or alloy responds in similar fashion to a granulation practice. This paper addresses three issues, namely: • Water-granulation 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
Primetals Technologies has provided blast furnace engineering, project excellence and expertise to customers world-wide for over a century. Our technology base covers the entire blast furnace process route from hot blast and raw material handling, through the furnace and casthouse, to gas cleaning and hot metal / slag processing.
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].
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 ...
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 4374645 PDF help. US Patent References: 4233007: Apparatus for ... In a process for the granulation of molten slag, ... Request Quotation. Hot ...
Proceedings of the Fourth International Slag Valorisation Symposium Zero Waste 15-17 April 2015 Leuven, Belgium Editors Annelies Malfliet and Yiannis Pontikes
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 years.5–9) In this Modeling on Dry Centrifugal Granulation Process of Molten Blast Furnace Slag
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 1.5 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 hauling and production of higher value by-product. 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.
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.
Granulation is the process of forming grains or granules from a powdery or solid substance, producing a granular material.It is applied in several technological processes in the chemical and pharmaceutical industries. Typically, granulation involves agglomeration of fine particles into larger granules, typically of size range between 0.2 and 4.0 mm depending on their subsequent use.
pdf. Some fundamental aspects of the dry slag granulation process. Yuhua Pan. Download with Google Download with Facebook or download with email. Some fundamental aspects of the dry slag granulation process. Download. Some fundamental aspects of the dry slag granulation process.
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
tical use. They include the air granulation process, whereby a high-pressure gas is blown onto the molten slag to solidify and granulate the slag while it is being cooled; ISC process,3) whereby the hot slag is first poured into a steel box for accelerated cooling/solidification and then subjected to water sprinkling and immersion cooling; and
The molten slag is then separated from the liquid metal and cooled (Gielen et al., 2008). If the molten slag is cooled and solidified by rapid water quenching to a glassy state, little or no crystallization occurs. This process results in the formation of sand size (or frit-like) fragments, usually with some friable clinkerlike material.
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
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
In the Baosteel Slag Short Flow (BSSF) granulation process developed by Baosteel, the liquid slag is transferred to a granulation drum where it is treated with injected water with a dwell time between three and five minutes, which significantly reduces the amount of unreacted free lime.
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.
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. Water consumption is minimized and average grain size increased by employing a multi-layer water stream defined by currents having different temperatures and ...
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
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.
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