slag granulation stone process

slag granulation stone process

Blast Furnace Slag Granulation / Ironmaking / Our ...

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 2-friendly substitute of clinker in cement production) rather than a difficult and costly waste material.Paul Wurth has developed the INBA ® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum.

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Slag Granulation with Continuous Dewatering Ironmaking

second granulation tank, one granulation unit can handle the slag of two tap holes. `Continuous filtering and evacuation of dewatered slag sand up to its storage facility without inter-ruptions for purging. ` High reliability. `Measurement of slag flow, due to the design of the drum and the dewatering process.

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US4374645A - Process for granulation of slag - Google Patents

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 ...

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Some Fundamental Aspects of Dry Slag Granulation Process

granulation process and the dynamics of slag droplet collision with solid surfaces will be covered. Published studies on the thermodynamics of sulphur in slags and kinetics of sulphur transfer between blast the furnace slags and oxidising gas mixtures have been reviewed to ascertain the effects of oxygen ial pressure on part

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(PDF) Slag granulation systems for blast furnaces

After the actual granulation process, the granulated slag . ... The studies show that phase and structural transformations during hardening of slag-alkali binder and the cement stone strengthening ...

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Products › Ironmaking and steelmaking › Slag Granulation ...

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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EP3022165A1 - Process and apparatus for dry granulation of ...

A process for producing substantially dry slag granules comprises adding a controlled amount of water to a molten stream of slag, and granulating the slag to produce solidified slag comprising substantially dry slag granules and slag wool. An apparatus for producing substantially dry slag granules comprises: (a) an inclined surface having an upper and lower ends for receiving and discharging ...

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US4374645A - Process for granulation of slag - Google Patents

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 ...

Read More
(PDF) Slag granulation systems for blast furnaces

After the actual granulation process, the granulated slag . ... The studies show that phase and structural transformations during hardening of slag-alkali binder and the cement stone strengthening ...

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Some fundamental aspects of the dry slag granulation process

The CSIRO’s Dry Slag Granulation (DSG) process is as a continuous two-step p rocess as shown in Figure 1. The . molten slag is first atomized using a spi nning disc and the fine droplets ...

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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A

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.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

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

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Further processing and granulation of slags with entrained ...

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

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Converting Granulated Blast Furnace Slag into Fine Aggregate

The developed conversion process involves improving the physical properties in two stages. Stage 1: Altering granulation parameters Slag Granulation is primarily affected by water temperature, water pressure and water flow rate. When the material solidifies under slow cooling conditions, escaping gases leave behind micro pores in the cooled mass.

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Reactivity and performance of dry granulation blast ...

Jan 01, 2019  Dry granulation, as a new process for molten blast furnace slag treatment, is an attractive alternative to water quenching. In this study, the performance of dry granulation slag in slag cement blends was investigated. The results demonstrated that the early strength for dry granulation slag cement mortar was too low, which is less than 50% of ...

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Slag recycling - recovery

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 Danieli-Corus.

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Prediction on particle size characteristics of high ...

Oct 01, 2020  New process for dry granulation and heat recovery from molten blast-furnace slag Ironmaking Steelmaking. , 12 ( 1985 ) , pp. 14 - 20 , 10.1016/0304-386X(85)90024-6 View Record in Scopus Google Scholar

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Design and Operation of Dry Slag Granulation Pilot Plant ...

Feb 22, 2019  CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient

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Dry Granulation of Blast Furnace Slag for Energy Recovery ...

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 the air and are then cooled further in a fluidized bed. Both of these processes provide the ...

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Granulation TENOVA

Tenova Pyromet has vast experience in the design and construction of wet granulation plants. The wet slag granulation process involves pumping water into the slag cold runner via a blower box to quench the molten slag. The in-house designs have been proven in numerous applications and have shown to be both robust and reliable.

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Slag water quenching process - YouTube

industrial waste slag water quenching process. industrial waste slag water quenching process.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

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

Read More
RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A

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.

Read More
Modeling on Dry Centrifugal Granulation Process of Molten ...

dry granulation process of molten slag which can solves the problems mentioned above to a large extent. Different kinds of dry granulation techniques have been proposed and investigated. Typical examples of these processes include granulation by cooling drum, mechanical stirrer, rolling

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Reactivity and performance of dry granulation blast ...

Jan 01, 2019  Dry granulation, as a new process for molten blast furnace slag treatment, is an attractive alternative to water quenching. In this study, the performance of dry granulation slag in slag cement blends was investigated. The results demonstrated that the early strength for dry granulation slag cement mortar was too low, which is less than 50% of ...

Read More
Design and Operation of Dry Slag Granulation Pilot Plant ...

Feb 22, 2019  CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient

Read More
Process for granulation of slag - Paul Wurth S.A.

Process for granulation of slag . United States Patent 4374645 . 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. Water consumption is minimized ...

Read More
Slag recycling - recovery

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 Danieli-Corus.

Read More
Dry Granulation to Provide a Sustainable Option for Slag ...

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.

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chinese technology for blast furnace slag granulation process

Abstract The difficulties of molten metallurgical slag (including blast furnace ... granulation, stirring granulation, air blast granulation and Merotec process, were expatiated. The technology of sensible heat recovery by chemical reactions, such as gas...

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Goldsmithing Granulation Technique - Ganoksin Jewelry ...

The revival of granulation in our century has been accompanied by many wrong ideas and misunderstandings, many stemming from the incorrect notion that the secrets of a mysterious process were long lost. To better understand granulation, we should therefore start by examining the myths and laying them to rest.

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inba slag granulation process friction factor ball mill

chile granulating slag dryer. Slag Granulation With Continuous Dewatering Ironmaking Slag granulation with the inba dewatering system 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 ...

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Modeling on Dry Centrifugal Granulation Process of Molten ...

2.1. Governing Equations of Molten Slag Flow and Granulation on a Rotary Disc. The DCG process of molten slag is simulated with a three-dimensional simulation program which is based on the VOlume of Fluid (VOF) scheme. 12) In this scheme, the fluid flow including molten slag and surrounding gas is described by the momentum and continuity equations, and the transient interface between molten ...

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Ground granulated blast-furnace slag - Wikipedia

Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.Ground-granulated blast furnace slag is highly cementitious and high in CSH (calcium silicate hydrates) which is a strength enhancing ...

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Crystallization Behaviors of Blast Furnace (BF) Slag in a ...

Blast furnace (BF) slag is the principal byproduct formed during the iron-making process, which generates a considerable amount of thermal energy. However, to simultaneously recover the maximum amount of residual heat and obtain vitreous slag using a low conduction coefficient of air is a primary challenge of the dry granulation technique, which has not been solved by either fundamental ...

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