the proportion of water quenched slag is generally much in Mexico

A Review of Granulation Process for Blast Furnace Slag

On this basis, the BF slag is up to 247 million tons in 2014, corresponding to 11 million tons standard coal, approximating 14.0% of consumption in the BF process. Generally, …

Production, characterisation, utilisation, and beneficial soil

The iron-making and steel-making industries produce four types of slags, named after the processes from which they are produced (Fig. 2): Blast Furnace Slag (BFS), Basic-Oxygen Furnace Slag (BOFS), Electric-Arc Furnace Slag (EAFS), and Ladle Furnace Slag (LFS), and the type of slag produced is dependent on the desired steel …

Utilisation of water quenched slag as fine aggregate in …

Request PDF | On Nov 20, 2018, Xinyu Cong and others published Utilisation of water quenched slag as fine aggregate in alkali activated mortar | Find, read and cite all the research you need on ...

Comprehensive utilisation of blast furnace slag

The water quenching granulation process, also known as the wet treatment process, is a process that uses a high-pressure water stream to quickly cool the blast fur-nace slag in …

A Review on the Carbonation of Steel Slag: Properties, …

Tu et al. conducted a thermodynamic simulation on the carbonation process of water-quenched steel slag using the thermodynamic modelling, which ... Generally, increasing temperature can promote the dissolution of active substances in steel slag and the carbonation reaction rate between them and CO 2 molecules [77,78]. More calcium …

Utilisation perspective on water quenched and air-cooled …

This rapid water quenching of slag results in the formation of sand-size fine particles, with a minimum amount of clinker like material. ... due to the dissolution action of ions and initial exothermic reaction on wetting of the slag in water. The observed peak is generally explains the rapid formation of a Si–Al residual layer with adsorbed ...

Frontiers | Research on formulation optimization and …

It is generally believed that water-quenched slag is a potentially active vitreous structure. This vitreous body contains a high crystallinity energy, but the hydration speed in pure water is very high. Add water slowly, because the water-quenched slag will form a dense and indeterminate acidic film on the particle surface after contact with ...

Pretreated water-quenched-manganese-slag slurry for …

Presently, researches on the use of low-cost pulp or slag for desulfurization and denitrification has attracted much attention globally. However, the efficiency of the NO x conversion remains low and has a short duration. Therefore, we tried to activate the water-quenched-manganese-slag (WQMS) through the pretreatment method of …

How much does Quenching increase Cast Bullet Hardness?

When loading magnum ammunition I generally aim for 18BHN or higher, so that should give you some insight into just how soft these air-cooled bullets are. ... I was genuinely surprised by just how much of a difference water-quenching made in my bullet hardness. Before reading the results, I'd suspected the difference might by two or three ...

FAQs

Molten slag is tapped from a blast furnace, rapidly quenched with water ("granulated"), dried and ground to a fine powder. The rapid quenching "freezes" the molten slag in a glassy state, which gives the product its cementitious properties. For more information, see SCIC #1, "Slag Cement.

Slag Cement and Concrete Pavements

Slag is a byproduct of processing iron ore to iron and steel in a blast furnace. Molten slag, which floats on the top of the molten iron ore, is separated and granulated. Granulation is the rapid quenching with water of the molten slag …

Utilisation perspective on water quenched and air-cooled …

The cooling measures (such as, air-cooled, water and air quenching, and steam quenching) impact the crystallization process of minerals in iron slag. The rapid cooling process (e.g., water ...

Water-Based Quenching: Capability Spotlight | Paulo

Water quenching is a widely used quenching method in which heated metal parts are rapidly cooled by immersing them in a liquid, water-based quenching media. ... Because water-based quench is the most severe quench option, you can generally process much larger parts than you would be able to using an oil quenchant. …

Water quenched slag from incinerator ash used as artificial …

The coarse water quenching slag (WQS 1) and fine water quenching slag (WQS 2) used in this study were obtained by mixing bottom ash and fly ash with a ratio of 4:3 and 3:2, respectively. The appearance is shown in Fig. 2, and the gradation of stone powder, WQS 1 and WQS 2 are shown in Fig. 3 .

Blast Furnace Slag

Generally, the blast furnace slag, when suddenly quenched with water in its molten state, forms glassy granulated particles, which after grinding becomes ground granulated blast furnace slag (called as slag in the rest of the text here). Slag has angular morphology as shown in Fig. 2 (c).

Utilisation perspective on water quenched and air-cooled …

Air-cooled slag contains substantial quantity of crystalline phases (>50%) which prevents the slag to exhibit cementitious properties whereas water-quenched …

Preparation of water-quenched manganese slag and fly ash …

Cement (CT): Conch P·O42.5 grade cement, produced in Xingan, Guangxi. UMA: Water-quenched manganese slag and fly ash are mechanically mixed at a ratio of 1:1 for 90 min (fly ash is taken from Guigang, Guangxi, and the water-quenched manganese slag is taken from Longda, Quanzhou, Guangxi); SF :Beijing. The chemical …

Effect of water quenched silicomanganese slag as fine …

This study assessed the effects of incorporating different contents (0–100 vol %) of water quenched silicomanganese slag (WQSMS) fine aggregate on the workability, strength development, and microstructure characteristics of solid waste-based mortar …

Martensite and the Control of Retained Austenite

Figure 4: As-quenched lath martensite in 8115 alloy steel (0.13/0.18% C) austenitized at 1700°F and water quenched. There are a few patches of ferrite present. The specimen was etched with nital and the image is at 1000X (magnification bar is 10 μm).

High-temperature modification and air-quenching …

quenching and water-cooling to deal with steel slag and realized industrial production [13], through which the uti-lization rate of steel slag has been improved signiﬁcantly. In addition, due to the advantages of high sphericity and good stability, air-quenched steel slag has been applied to abrasive [14] and concrete ﬁne aggregate [15 ...

A Review of Granulation Process for Blast Furnace Slag

1—clinker ejector, 2—water slag ditch, 3—water slag tank, 4— distributor, 5—drum filter, 6—buffer tank, 7—collecting tank, 8—thermal basin, 9—cooling tower,10—water tank, 11—belt

Study on Copper Recovery of Water-quenched Slag from …

Factors affecting flotation of water-quenched slag from a copper smelting plant in Hubei province,such as grinding fineness,pulp density,pH value and the reagent system,were studied.The results indicate that the best flotation efficiency was obtained with a grinding fineness of 95%-0.074 mm,a pulp density of 30%,a pH value of 7.0 and reagent …

Reactivity and Hydration Property of Synthetic Air Quenched Slag …

Air quenched slag is processed by a fast air cooling method which is developed with the advantages of recovering heat from molten slag and water conservation compared to the water quenching method.

To obtain reproducible results by water quenching, the …

Therefore, water quenching is generally not used for complex shapes or blind holes. These geometrical obstructions result in a non-uniform heat transfer around the surface of the part due to a persistent vapor phase. In areas of persistent vapor phase, low hardness may result. Cracking

Assessment Of Atmospheric Emissions From Quenching Of …

----- Fluorides Type of water Mill service Mill service BF blowdown BF blowdown Slag temperature, °F (°C) 816 (436) 1443 (784) 1059 (571) 1476 (802) Fluorides in water, mg/liter 1.84 1.84 15.1 15.1 Fluorides, mg/liter 35.3 238 32.4 157 The generation of fluorides is not de- pendent on the concentration in the quench water or the quench …

Effect of Oily Sludge Treatment with Molten Blast Furnace Slag …

The reconstituted water-quenched blast furnace slag still has good activity, and it will not affect the further use of the slag after pyrolysis (BFS-P). Keywords: blast furnace slag; heavy metals; oily sludge; pyrolysis and digestion. Grant support No. 51974054/National Natural Science Foundation of China ...

Research Progress on Controlled Low-Strength Materials: …

Air-cooled slag is obtained from a melt as a result of air-cooling treatment and is generally used as a slag aggregate. Granulated slag is formed after granulation treatment and can be used as a cement mixture or light aggregate. Water-quenched slag is obtained after a water-quenching treatment; this slag is highly porous.

Effect of cooling technique of blast furnace slag on the …

The results demonstrated that the particle size distribution and XRD pattern of dry granulation slag were similar to those of slag obtained from water quenching.

Properties and Environmental Dynamics of Slag

Like the character of slag itself, its further mutability after quenching can be highly variable. If the slag is water quenched and returns as a glass-rich composite containing crystals and bubbles, its mechanical and chemical integrity are highly dependent on the details of the slag itself and the quenching rates.

Effect of Oily Sludge Treatment with Molten Blast Furnace Slag …

The reconstituted water-quenched blast furnace slag still has good activity, and it will not affect the further use of the slag after pyrolysis (BFS-P). Blast furnace slag, which is the main by-product of the ironmaking process discharged at 1450 °C, contains high-quality sensible heat, while oily sludge is the main solid waste produced in the ...