A Review of Granulation Process for Blast Furnace Slag

energy-saving potential in China. The Blast Furnace (BF) energy consumption account for the largest percentage, and responsibly, it should bear more energy conservation and emissions reduction such as BF slag sensible heat recovery. 2 Blast furnace slag and its utilizations Blast furnace slag is a by-product of blast furnace (BF) ironmaking ...

Blast Furnace Slag | ASA | Australasian (iron & steel) Slag …

Molten blast furnace slag, which is rapidly quenched from the furnace, air-cools slowly to form . Where this granulated slag is further processed or ground, the product is referred to as ground granulated blast furnace slag (GGBFS). Approximately 300kg of slag are produced for each tonne of iron. The furnace operates on a continuous daily basis ...

Geotechnical and Environmental Assessment of Blast Furnace Slag …

Blast furnace slag (BFS) is a particularly interesting anthropogenic material. ... To check if the GGBFS was susceptible to crushing, we checked the fraction share change after compaction in the CBR mold for the Proctor and vibro compaction tests (see Figure 5). The laboratory results are presented, and additional field tests are required to ...

Titanium Extraction from Titania-Bearing Blast Furnace Slag: …

The blast furnace smelting process for vanadium titania-magnetite is shown in Fig. 1.The low concentration of TiO 2 with about 1.5 wt.% in the primary mineral can be enriched into titania-bearing slag with more than 20 wt.% TiO x, 29,30 as shown by the composition range in Table I; other oxides including CaO, MgO, SiO 2, and Al 2 O 3 are presented in the slag as …

Geotechnical and Environmental Assessment of Blast …

Blast furnace slag (BFS) is a particularly interesting anthropogenic material. This material is a byproduct of steel mills, which is deposited in slag dumps at the end of the process [5, 6]. The …

A study of intergrinding and separate grinding of blast furnace slag

Grinding-related parameters of blast furnace slag cements (BFC), such as Bond grindability, specific rate of breakage and breakage distributions were determined employing separate and intergrinding modes. ... As received, the slag was finer and hence the clinker was also reduced down to similar fineness by crushing in a roll crusher and −3.36 ...

Modeling of the molten blast furnace slag particle deposition on …

The blast furnace slag with extremely high discharge temperature is a by-product in iron and steel production process. Dry granulation method based on rotary disk atomizer shows great advantages in recovering sensible heat of blast furnace slag. ... Therefore, many researchers have proposed various dry methods such as the mechanical crushing ...

Granulated Blastfurnace Slag

blast-furnace slag cement containing 50 wt.-% GGBS gen-erates only 0.54 t CO 2. These data include emissions from the calcination process, the fossil fuel burning, and the use of electricity. For some countries maybe the potential saving is much more higher. Thus the use of slag is a very effective and economic

Numerical simulation analysis centrifugal blast furnace …

In the process of centrifugal dry granulation of blast furnace slag, the thickness of the liquid film at the outlet of the rotor will have a significant impact on the degree of crushing of the slag after leaving the rotor and the size of the solid particles formed. Therefore, this paper uses

Blast furnace slag

After crushing and screening, air-cooled blast furnace slag (ABS) provides an eminently suitable material for use as a construction aggregate in bound or unbound form, like any natural rock. Granulated blast furnace slag (GBS) exhibits cementitious properties and is thus used as hydraulic binder for cement, concrete, mortar and grout.

Numerical Simulation of the Slag Granulation Process in Gas …

Blast furnace slag is a major by-product of the iron-making process, discharged from a blast furnace. The temperature of the molten slag reaches as high as 1500 °C. ... This section describes the detailed slag crushing process based on the simulation results and then analyzes the slag crushing mechanism based on its crushing details. 3.1.1 ...

Blast Furnace Slag

After cooling to 93°C (200°F) or lower, the slag is transported to a plant for crushing and screening to a size appropriate for concrete use (Dobrowolski, 1998). Air-cooled blast furnace …

Furnace Slag

Pelletized blast-furnace slag resulted from cooled blast-furnace slag. It has a vesicular texture and it is used as a lightweight aggregate and finely grounded as cementitious material. Air-cooled blast-furnace slag is naturally cooled with moderate sprinkling. The crystallized slag, after crushing, sieving, and removing magnetic matter, can be ...

Comprehensive Analysis of Steel Slag as Aggregate for Road …

Blast Oxygen Furnace (BOF) slag represents one of the largest waste fractions from steelmaking. Therefore, slag valorisation technologies are of high importance regarding the use of slag as a secondary resource, both in the steel sector and in other sectors, such as the construction or cement industries. The main issue regarding the use of BOF slag is its …

What is a Slag Crusher Machine and How Does it Work?

The process of crushing slag begins with the feeding of the slag into the Slag Crusher Machine. The machine crushes the slag to the desired size, and the crushed slag is then separated and removed from the machine. ... Blast furnace slag is a byproduct of the iron and steel production process. It is generated during the melting and refining of ...

Properties of lightweight aggregates produced with cold …

Pelletization is a worldwide process used in producing artificial aggregates although its usage is not common in Turkey. In this study, lightweight aggregates (LWAs) were manufactured through cold-bonding pelletization of ground granulated blast furnace slag (G) and two types of fly ash with different finenesses (Fly ash A and B). Ordinary Portland cement (PC) …

Numerical Simulation and Experimental Study on Centrifugal …

Using centrifugal granulation technology to recover energy from blast furnace slag efficiently is the direction of metallurgy industries for realizing sustainable development.Influences of operation parameters such as diameter,depth and speed of rotating disk and mass flow rate of slag on the atomization need to be studied for getting specific slag diameter.A 2-D fluid flow VOF model …

What is Blast Furnace Slag and How to Process It?

Blast furnace slag is a kind of industrial solid waste. The slag discharged in the process of blast furnace ironmaking, also known as blast furnace slag, can be divided into steel-making pig iron slag, casting pig iron …

Tempering and modification of basic oxygen furnace slag with blast

In terms of resource utilization, Wei et al. [17] mixed converter slag and blast furnace slag with gypsum and other materials to develop a clinker-free cement formula with high early strength. By optimizing the material ratio, the efficient utilization of up to 30 wt% converter slag in cementitious materials was achieved, which not only ...

UG-Mat Blast Furnace Slag | Recycled Materials …

Crushing Blast furnace slag requires minimal processing to satisfy the physical requirements for use in embankments. Primary crushing is generally adequate to satisfy gradation requirements. Quality Control Leachate from the material …

Laboratory evaluation of a complex treatment technology …

When smelting each ton of pig iron, approximately 500 kg of blast-furnace slag is formed and requires recycling. Air-cooled blast-furnace slag can be used for the manufacture of slag aggregate for the pavement subbase layers, as an alternative to natural stone aggregate. The wide use of slag in this area is limited by its high water absorption.

Blast Furnance Slag

Blast furnace slag requires minimal processing to satisfy the physical requirements for use in embankments. Primary crushing is generally adequate to satisfy gradation requirements. …

Selective crushing, enrichment by friction properties and

One of the most common ways of recycling BFS in the liquid state is granulation (rapid cooling of hot BFS in a liquid state in a jet of water). As a result of this process, granular …

Processing and Reusing Technologies for Steelmaking Slag

③ crushing and classification of the slag for grain size adjustment to manufacture the slag product, and ④ aging treatment of the slag product for improving its quality and volumetric …

Duquesne Air Cooled Blast Furnace Slag | Holcim US

Blast Furnace Slag is produced to meet state specifications for gradation and other key requirements. The American Society of Testing and Materials (ASTM C-125, Definition of Terms Relating to concrete and concrete Materials) defines Blast Furnace Slag as "the non-metallic product consisting essentially of silicates and aluminosilicates of calcium and other bases, that …

A review of waste heat recovery technologies towards molten slag …

Blast furnace slag (BF slag) is produced in ironmaking process and accordingly, steel slag is produced in steelmaking process. In China, liquid pig iron production reached 642 million tonnes by 2011 and 193 million tonnes of BF slag was produced [4] with a generation rate of about 0.3 tonne per tonne of liquid pig iron.

Chapter 3 Blast Furnace Refractory

Blast Furnace Refractory 3.1 Introduction ... corrosion reaction with slag at below cohesive zone at belly and bosh, and penetration of hot liquid metal in hearth. Apart from the thermal stresses, the alkali infiltration by the refractories and the possible ... – High hot crushing strength. – Non-wetting towards molten iron and slag.

Slag Cement Production Line | Blast Furnace Slag Cement …

Raw material crushing; raw mill; clinker calcination; clinker grinding; finished cement storage and paking; ... Slag, also known as granulized blast furnace slag, is a solid waste formed from gangue in ore, ash in fuel, and non-volatile components in solvents (usually limestone) during the ironmaking process in blast furnaces. ...

Analysis of existence state and deterioration mechanism of …

Pursuing green, low-carbon ironmaking technology primarily aims to reduce fuel ratios, especially coke ratios. Simultaneously, the reduction in coke ratios causes the coke layer in the blast furnace (BF) to become thinner, deteriorating the gas and liquid permeability of the burden column. This exacerbates coke degradation, significantly impacting the smelting …

Cooling and phase evolution of a molten blast furnace slag …

In the dry centrifugal granulation process to treat liquid blast furnace slag, it is critical to clarify the cooling and crystallization characteristics of slag particles, which greatly determine their subsequent reutilization and waste heat recovery.Here, we investigated the cooling characteristics of a single slag particle by simulation in terms of crystal phase content …

Effect of particle crushing on the geotechnical properties of

DOI link for Effect of particle crushing on the geotechnical properties of granulated blast furnace slag. Effect of particle crushing on the geotechnical properties of granulated blast furnace slag. By H. Matsuda, W.J. Baek ... Granulated blast furnace slag (GBF slag) generated in the manufacture process of pig iron has a high shear strength ...

THE LOAD DEPENDENCE OF THE MICRO-HARDNESS OF …

The blast furnace slag is generally processed by conventional crushing and grinding equipment. According to Li et al. [10] and User Guidelines for Waste and

Numerical investigation of breakup process of molten blast furnace slag

Blast furnace slag (BFS) is the main by-product in ironmaking process. As its discharge temperature is between 1450 and 1550 °C, each ton of slag contains a large amount of high-quality thermal energy which is equivalent to 60 kg standard coal [1,2,3]. Thus, there is a great potential for waste heat recovery from high-temperature molten slag.