What is meant by lime saturation factor?

Lime Saturation Factor (LSF) is the ratio of the actual amount of lime in raw meal/clinker to the theoretical lime required by the major oxides (SiO2, Al2O3 and Fe2O3) in the raw mix or clinker. The amount of free lime in clinker indicates incomplete burning and needs to be monitored.

What is a saturation factor?

Definition of saturation factor : a measure of the saturation of a magnetizable body that is the ratio of a small percentage increase in excitation to the percentage increase in magnetic flux produced thereby and that is usually applied to the magnetic excitation of dynamoelectric machines at rated speed and voltage.

What is the physical significance of lime saturation factor?

The parameter used is Lime Saturation Factor (LSF) which represents the ratio of CaO by Al2O3, Fe2O3, and SiO2. Blending of raw materials will never be excellent and there are perpetually regions inside the clinker where the LSF locally is slightly below, or slightly above, the general target of clinker creating.

What is the formula for the saturation factor?

LSF (Lime Saturation Factor) = 100 * CaO / Optimal CaO. Whichever greater LSF level is looked for, more energy will be required by greater amount of carbonates to descarbonate, unless the CaO comes from other minerals different from carbonates.

How do you calculate lime saturation factor?

Lime Saturation Factor (LSF) The Lime Saturation Factor is a ratio of CaO to the other three main oxides. Applied to clinker, it is calculated as: LSF=CaO/(2.8SiO2 + 1.2Al2O3 + 0.65Fe2O3) Often, this is referred to as a percentage and therefore multiplied by 100. LSF to be maintained in limestone 102-104.

What is SM cement?

Silica Modulus/Ratio (SM)

What is the minimum percentage of lime saturation in 43 Grade OPC?

Its values in modern clinkers are 0.92 – 0.98 or 92 \% – 98 \%….Detailed Solution.

Types of Cement	LSF
43 Grade CEMENT (IS 8112:1989)	0.66 to 1.02 \%

What is silica ratio and alumina?

The ratio of silicon dioxide to alumina oxide (SiO2:Al2O3 ratio) is often used as an indicator of glaze matteness. A glaze with high alumina thus has a low silica:alumina ratio. CaO in large amounts is a matting agent in high and medium temperature glazes (via crystallization). Opacifers will affect matteness.

What is AR cement?

Alumina Ratio (AR) An increase in clinker AR (also sometimes written as A/F) means there will be proportionally more aluminate and less ferrite in the clinker. In ordinary Portland cement clinker, the AR is usually between 1 and 4.

Which is best 43 grade or 53 grade?

OPC 53 sets quicker than OPC 43 and has a quite low initial setting time. It is used in structures where rapid strength gain is required like large load bearing structures like bridges, huge buildings, etc. OPC 43 on the other hand doesn’t set so quickly and has a normal initial and final setting time.