What is the density of slag?

Expanded Blast Furnace Slag The bulk relative density of expanded slag is difficult to determine accurately, but it is approximately 70 percent of that of air-cooled slag. Typical compacted unit weights for expanded blast furnace slag aggregates range from 800 kg/m3 (50 lb/ft3) to 1040 kg/m3 (65 lb/ft3).

What is EAF slag?

EAF slag is a rock-like material generated during the steel-making process. EAF slag is used as an alternative to rock fragments, both in encapsulated uses (e.g., contained in concrete) and unencapsulated uses (e.g., loose ground cover material). It is commonly used as road base material.

What is the specific gravity of slag?

Specific Gravity: Due to the relatively high specific gravity (3.2-3.6) of steel slag, steel slag aggregate can be expected to yield a higher density product compared with conventional mixes (2.5-2.7).

What is the hardness of slag?

Even relative to the hardest minerals, steel slag is a hard material, which makes it very durable. The international standard measurement for hardness is the mohs hardness scale. Steel Slag has a mohs hardness value of 6.

What is density of fly ash?

For fly ash without close compaction, the bulk density (mass per unit volume including air between particles) can vary from 540 to 860 kg/m3 (34 to 54 lb/ft3), whereas with close packed storage or vibration, the range can be 1120 to 1500 kg/m3 (70 to 94 lb/ft3).

How does an EAF work?

An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Arc furnaces differ from induction furnaces, in that the charged material is directly exposed to an electric arc and the current in the furnace terminals pass through the charged material.

What are some uses for electric arc furnace slag?

They are widely used in transportation industry, construction, and cement manufacturing as well as wastewater and water treatment. This makes slag an important substitute for natural resources, leading to significant minimization in natural resource utilization.

What is the specific gravity of fly ash?

The specific gravity of fly ash usually ranges from 2.1 to 3.0, while its specific surface area (measured by the Blaine air permeability method)(6) may range from 170 to 1000 m2/kg. The color of fly ash can vary from tan to gray to black, depending on the amount of unburned carbon in the ash.

Is slag better than gravel?

Usually found in the form of small chips, slag is somewhat glassy in appearance and durable enough to handle vehicle traffic with relative ease. For this reason, many choose it as an alternative to traditional aggregates like gravel when building their driveways, as well as other pavement projects.

What is the chemical formula of slag?

To form slag, soda ash (Na2CO2) is added. The slag can generally be expressed by the formula FeSNa2S(O). Both reactions 9.5 and 9.6 are heterogeneous and endothermic in nature.

What is the specific gravity of steel slag?

10.2.1 Steel slag Property Steel slag Type of steel slag Natural aggregate Type of natural aggregate Specific gravity 3.51 EAF-slag 2.71 Quartzite Los Angeles abrasion (%) 11.6 19.2 Water absorption (%) 0.85 1.60 Specific gravity 3.64 EAF-slag 2.66 –

What kind of slag is used in an arc furnace?

Electric arc furnace (EAF) slag is a strong, dense, none porous aggregate that is cubical in shape, has good resistance to polishing and has an excellent affinity to bitumen.

What kind of slag is produced in the steel industry?

The first stage of the scrap-based steel industry production generates EAF slag (EAFS) and a second stage is performed to refine the molten steel. The slag produced in the LF (LFS) is the result from steel refining and, therefore, it is generally a heavy metal carrier such as chrome, lead or zinc ( CEDEX – Ministerio de Fomento, 2018 ).

Is the chemical composition of ABS the same as slag?

Its chemical composition is the same as that of ABS, but the structure and the stability are different. To obtain rapid cooling so as to obtain a vitreous structure, the slag is granulated. After that, the ABS is ground to sizes below 100 μm.