What Is The Slag Field Water Quenching

Quenching is the process of rapidly cooling a material (usually a metal) in order to obtain desirable mechanical properties like increased strength and hardness. Most people think quenching is just dunking red-hot steel into a bucket of water, but materials scientists can quench in water, oil, liquid nitrogen, or even air.

In the heat recovery technology of molten slag granulation, gas quenching is one of the most promising and crucial technologies for high-quality resource utilization. This study performed numerical investigations on the slag granulation process through the realizable k-epsilon model and volume of fluid methodology and gained deep insight into the breakup …

A water-quenching process is necessary for the formation of WQS particles, to enable cooling down, liquified blast furnace slag at more than 1400°C was dumped into a river. The water-quenching process generated a mass of activated compositions and enhanced the stiffness of …

At present, water quenching is a popular technique for slag production, which leads to the wastage of considerable high-quality heat [5,6,7]. Therefore, effectively improving the energy efficiency and reducing the resource consumption to recycling slag, and recovering the high-quality sensible heat, is crucial for the metallurgical industry [ 8 ...

necessary to develop an alternative to water quenching. Polyalkylene glycol quenchants (PAG) [5] were developed to provide a quench rate in between that of water and oil. By control of agitation, temperature, and concentration, quench rates like water can be achieved. The average cooling rates of quenching aluminum in water have

Water-quenching blast furnace slag as a by-product of the iron production has caused serious environmental concerns. This paper tried to investigate the feasibility of the blast furnace slag filler (WBFSF) used as an alternative filler to replace the limestone filler (LF) in asphalt mixtures. Specifically, the chemical compositions, morphology ...

At present, more than 80% of the slag is treated by water quenching method. Although different water quenching methods differ in the specific process, they all have common disadvantages[3-4]: 1) waste of the heat resources in blast furnace slag; 2) waste of large amount of water; 3) producing a large amount of harmful gases such as SO 2 and H 2

A water-quenching process is necessary for the formation of WQS particles, to enable cooling down, liquified blast furnace slag at more than 1400°C was dumped into a river. The water-quenching process generated a mass of activated compositions and enhanced the stiffness of the slag. In particular, some vitreous grains were formed in this process.

A key advantage of water quenching is that it is not flammable like its oil counterpart. There is also very little cleanup required when quenching with water. Types of Water for Quenching Water quenching is generally with water, but brine (water and salt) is also a common quench technique. Both are much easier to control and less dangerous ...

DOI: 10.1016/J.APENERGY.2016.03.079 Corpus ID: 112213096; Energy–environment–economy evaluations of commercial scale systems for blast furnace slag treatment: Dry slag granulation vs. water quenching

Quenching is a metal heat treatment process that involves the rapid cooling of a metal to adjust the mechanical properties of its original state. ... Water. Water is able to quench heated metals rapidly as well. It can cool a metal even faster than oil. In a fashion similar to oil quenching, a tank is filled with water and the heated metal is ...

For the blast furnace, converter and electric furnace slag sensible heat, only water quenching method recovering hot water has been applied while the others are still in the experimental research stage [7]. Using the flashing water sensible heat to heat the residents in winter is the main utilization way in China. ... In the field of low-grade ...

Water quenching blast furnace slag (WQBFS) is widely produced in the blast furnace iron making process. ... (CCM) was prepared by the simple wet-impregnation technique. Field emission scanning ...

Blast furnace slag (BFS), a waste product of the iron manufacture process, contains a mass of silica obtained from gangue of the iron ores and ash content in fuels and fluxes. In recent years, large amounts of BFS have not been fully utilized, leading to the surrounding environmental pollution and the additional administration costs for steel …

The liquid slag is cooled and solidified by rapid water quenching to form a glassy state material with minimum probability of crystallisation. This rapid water quenching of slag results in the formation of sand-size fine particles, with a minimum amount of clinker like material. The physical properties and granulometry of GBF slag depend on the ...

Clean and cheap water quenching instead of high pollution and high cost of oil quenching or polymer aqueous solution quenching will become a trend in the heat treatment industry. ... The FES of temperature field and microstructure field cannot solve the cracking induced by water quenching. If the prediction of stress field cannot be made by FES ...

Water Quenching. Water quenching is a process of cooling metal using water. This method is typically used for steel and iron. Water quenching can be done using either cold water or hot water. The benefits of water quenching include the following: Water quenching is less likely to cause distortion in the metal than other methods, such as oil ...

Brine is another suitable quenching method that involves a blend of water and salt. Brine quenching is faster than any other media like water, air, and oil. The mixture of salt and water can control the formation of air globules when it is put in contact with heated metal. The maximum surface area of the heated metal can be covered with brine ...

1.1 Water quenching granulation process. 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 furnace slag in the molten state to produce amorphous slag.

The strength and grindability of copper smelting slag produced by water quenching have been investigated in the framework of single particle crushing and corrective grinding tests. X-ray diffraction analysis clearly indicated that the slag samples are the mixture of glassy and crystalline components, such as fayalite and magnetite. The amount of crystalline component of as …

Water slag is to quench the molten blast furnace slag with water or a mixture of water and air to make it a sand-like vitreous substance. This is also the main method of treating blast furnace …

The utility model provides a slag water quenching slag pot, which is provided with a water tank. The water tank is provided with a water spray hole, and the water tank is provided with a plurality of spray pipes. The distance of each row of the spray pipe to the front wall of the water tank is different. Multiple layers of water curtains can be formed to cause the pressure and direction of …

In blunt box, high pressure water from porous nozzle jet will quench the molten BF slag. In the next case, water quenching slag pours through graining tank and flows into the settling pond. …

Rapid cooling could reduce the content of RO phase in steel slag, and the content of RO phase for the furnace cooling, air cooling, mist cooling, and water quenching samples were 28.03%, 22.53% ...

Fast slag discharge and high processing capacity; however, it occupies a wide area, pollutes the environment, has poor powdering effect and stability, and the separation of slag and iron is not complete. water quenching method: The liquid steel slag is crushed into small particles of steel slag using high-pressure water during the dumping process.

When the molten slag comes in contact with the quenching water, the ash fractures instantly, crystallizes, and forms pellets. High-pressure water jets wash the boiler slag from the hopper into a sluiceway which then conveys the ash to collection basins for dewatering, possible crushing or screening, and stockpiling (Moulton 1973). ...

The process of quenching is intended to alter the microstructure of metals in conjunction with a thermal process. For example, the purpose of quenching A356 Al castings is to keep the Mg2Si from forming precipitates. If …

Steel slag can also be produced by smelting iron ore in a basic oxygen furnace. According to methods for cooling molten steel slag, steel slag is classified into five types: natural air-cooling steel slag, water-spray steel slag, water-quenching steel slag, air-quenching steel slag, and shallow box chilling steel slag [47,48].

Pelletized slag is solidified by water and air quenching in conjunction with a spinning drum. Molten slag containing gas bubbles is projected through a water spray so as to form pellets. These are rounded in shape and have a smooth coated surface. However, crushing (which destroys the coating) has to be used to obtain fine particles.

Tradition steel slag water quenching method is because residual steel did not carry out effective separation before shrend with liquid steel slag, residual steel withWater contact is easily blasted, and has formed larger potential safety hazard to user, has affected the normal production of steel-making,User's economic benefit and social benefit are reduced.