Keywords: NaCl, aqueous solution, solution, brine, quenching, Salt water, quenching salt water tank, quenching water tank, quenching tank,

Salt water quenching NaCl aqueous solution ratio

The ratio of quenching brine (NaCl aqueous solution) in the brine quenching tank is calculated based on the mass fraction. The salt content of quenching salt water is constant, and the quality of salt is directly proportional to the quality of water. The concentration of the commonly used quenching salt water NaCl solution in the quenching salt water tank is generally controlled between 5% and 15%, with a specific gravity of 1.039-1.108g/cm3.

The formula for calculating salt content based on the weight of salt and water is:

Salt content=mass of salt/(mass of salt+mass of water)

Namely: concentration=salt ÷ (salt+water) × 100%

The formula for calculating the weight of salt based on the known water quality and salt content is:

The quality of salt=salt content X water quality/(1-salt content)

In production practice, the quenching salt water tank needs to be diluted with water regularly as the concentration of water evaporation increases. Please refer to the example for specific dilution:

Example 1: There are 2000 kilograms of quenching salt water containing 15% salt. To make the quenching salt water contain 10% salt, how many kilograms of water need to be added?

Analysis: Salt content=(weight of salt/weight of saltwater) x 100%, weight of salt=weight of saltwater x salt content. First, calculate the original salt content. If x grams of salt are to be added, then the weight of salt=weight of original saltwater plus the weight of added salt multiplied by the salt content. Based on this, solve the equation

Solution: 2000 kilograms of saline water with 15% salt content, where the mass of salt is:

2000 * 0.15=300kg,

The quality of water is:

2000-300=1700kg

To contain 10% salt, let the mass of salt water be m, that is

300/m=0.1

M=3000kg

Need to add water:

3000-2000=1000kg

Answer: 1000kg of water needs to be added.

Example 2: There are 900 kilograms of quenching salt water with a concentration of 6%. To increase the concentration to 10%, how many kilograms of salt need to be added?

Add salt X kilograms

6% x 900+X=10% x (900+X)

54+X=90+0.1X

0.9X=36

X=40

Answer: 40 kilograms of salt is needed

More Proportion of NaCl aqueous solution for brine quenching: www.quenchtank.com/view-147.html