So exploring some methods to handle and apply the steel slag effectively has become one of the vital tasks in the steel industry.Based on the research status of molten steel slag dry processing, the theoretical analysis on the principle and properties of dry granulation process of molten steel slag by rotary disk has been completed in the paper.
Dry Granulation of Blast Furnace Slag for Heat Recovery Blast furnace slag is known as a by-product from the production of hot metal at integrated steel and iron mills. Approximately 300 kg of this liquid slag with a temperature of about …
Dry Slag Granulation Steelmaking slags are typically dumped to ground and used as lowvalue road aggregate Hatch s dry slag granulation process uses air to directly granulate slag The dry slag granulation advantages include improved safety reduced noise and pollution and ability to access higher valueadded slag markets … Slag Wikipedia
Slag Dry Granulation Tenova developed a valorization process for the EAF and LF slag as a raw material. The process consists in the fast cooling of the liquid slag mixed with residual …
Primetals Technologies has developed a new innovative blast furnace dry slag granulation process with heat recovery at the voestalpine pilot plant in Linz, A...
However, such slag treatment methods have some obvious shortcomings: ie, no heat recovery, air pollution, and consumption of a large amount of fresh water. Therefore, there has been an increasing interest in processing molten slags without using water quenching, so-called dry slag granulation (DSG) Conference paper Dry granulation
The hot air can be recovered and used in other process operations. Compared with water granulation, dry granulation enables production of slag granules without water and …
This paper focuses on an experimental study of dry slag granulation process using an analogue for BF slag (a mixture of rosin and paraffin wax). This analogue can be used to experimentally study dry slag granulation at a relatively low temperature of 130 °C compared to BF slag at 1500 °C.
The slag granulation installation designed by us enables its easy transport and dosing. Basic scope of design works: – Development of slag granulation technology (parameters: 35Mg of slag with temperature 1120-1280°C during 15min cycle); – slag hopper, flood trough and granulation trough;
Slag granulation using water sprays is now an established technology that not only simplifies blast furnace casting floor operations but also provides an economical route for producing of a valuable raw material for a host of …
Dry Slag Granulation — Metals Magazine Dry Slag Granulation Date Range Ironmaking Tapping hot slag for energy Hot slag in blast furnaces is a source of energy that has gone largely untapped. Dry Slag Granulation is about …
dry slag granulation system slag granulation dry slag Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number GB201215915A Other versions ...
development of the dry granulation process since 2002 and has made some breakthroughs in process design to resolve the difficulties that have hindered previous attempts by researchers …
In this study, the effectiveness of dry slag granulation was studied using a mixture of rosin and paraffin wax as an analogue for blast furnace slag. The effects of various parameters such as rotational speed of the disc, diameter of the disc and flow rate of the molten liquid have been studied. Different ranges of operating conditions in terms ...
The energy in slag is lost through dumping and water granulation processes, and where slag is sold as a by-product, it is for its chemical content only. Here, dry granulation …
Some Fundamental Aspects of the Dry Slag GranulationProcess . Sharif Jahanshahi*, Yuhua Pan and Dongsheng Xie . CSIRO Minerals Down Under National Research Flagship, Clayton, Victoria, 3168, Australia . Abstract: There is a growing interest in development of a dry slag granulation (DSG) process so as to recover the
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… 7 View 2 excerpts, cites background Cold experiment of slag centrifugal granulation by rotary atomizer: Effect of atomizer configuration
Different from the technology developed by steelmaking companies in Japan [4], Dry slag granulation (DSG) is a popular technology to recover heat from BF slags in China [35]. …
Slag granulation using water sprays is now an established technology that not only simplifies blast furnace casting floor operations but also provides an economical route for producing of a valuable raw material for a host of industries. The slag granulation plant comprises three sections: for granulation, dewatering and storage.
Dry granulation is typically used in the manufacture of tablets if the formulation ingredients are too fluffy or too susceptible to flowability problems for direct compression to be a viable processing option and/or too susceptible to …
Dry granulation serves as a lower-cost method of processing powder and powder blends. It does not require the use of a liquid binding agent, which eliminates the need for separate moisture addition and material drying …
Compared with water quenching, dry granulation offers a much more sustainable approach through saving water, reducing emissions, as well as recovering waste heat to reduce energy consumption, and hence GHG emissions. CSIRO has been working on the dry granulation process since 2002 and has made major breakthroughs in novel process design.
Dry granulation presents major advantages including improved safety, water-free processing, reduced cost, lower maintenance, potential for heat recovery, decoupling of primary and …
Characteristics of technical water used for wet granulation are as follows: initial temperature—293 K; weakly acid-neutral medium—pH 6.5–7.5; average mineralization, dry residue—200–400 mg/dm 3; average hardness—3–5 mg-eq/dm 3; high transparency, suspended solids content—4.5 mg/dm 3 . Table 1 Types and main indicators of processable slag melts
While substitution of ground granulated blast furnace slag for up to 70 percent of the portland cement in a mix has been used, there appears to be an optimum substitution percentage which produces the greatest 28 day strength.
Dry Slag Granulation Steelmaking slags are typically dumped to ground and used as low-value road aggregate. Hatch's dry slag granulation process uses air to directly granulate slag. The dry slag granulation advantages include improved safety, reduced noise and pollution and ability to access higher value-added slag markets.
Abstract. Paul Wurth has approached the topic of dry slag granulation with a simple but effective method in which steel spheres and liquid slag are mixed to achieve fast …
DRY SLAG GRANULATION WITH HEAT RECOVERY I. Mcdonald, Andrea Werner Materials Science 2017 Each year, approximately 400 million tons of blast furnace slag is produced worldwide with a tapping temperature of around 1,500°C. It is normally used as a substitute for cement clinker or as an… Expand 7 PDF
DRY SLAG GRANULATION DEVICE & METHOD. 2748344 - EP12753099B1 - EPO Application Aug 17, 2012 - Publication Jun 24, 2015 Ian McDONALD. Description ...
The process is considered environmentally within metal production, called Dry Slag Granulation (DSG), reduces water use and cuts greenhouse gas emissions.