Molten Salt Calcium Chloride

Main Ingredients	:	Salt Mixture with Corrosion Inhibitor
Inhibitors and water   6 Inhibitors	:	6 %
Colour Bright	:	Yellow
Nitrite Content	:	7.5 to 8.5%
Chloride Content	:	0.10% Max.
pH of solution	:	9.5 - 10.5
Odour	:	PRACTICALLY ODOURLESS
Solubility in water	:	SOLUBLE
Melting Point	:	Max 150 - 155 °C
Working Temp Range	:	155 – 540 Deg.C
Density @ 20 Deg.C	:	1160 Kg/m3
Reverse Alkalinity	:	Minimm 15.0 ml
Vapour pressure	:	.07 mbar at 20oC
Hear Transfer Salt TR	:	155
Skin absorption/irritation	:	YES
TLV       Country	:
Pollution category    1994	:	III

The molten salts most commonly used in heat transfer applications are the nitrate salts due to their low melting point, high operating temperature, thermophysical properties, low toxicity, low vapor pressure and corrosion performance.

 

The most common nitrate molten salts generally are a eutectic blend of sodium nitrate and potassium nitrate. Individual salts can be used, but by combining the two different salts together, the melting point is reduced. This allows for lower minimum operating temperatures and thus reduces the chance of freezeup. Sodium nitrate has a melting point of 584°F (307°C), and potassium nitrate has a melting point of 631°F (333°C). By mixing the two together, however, you can create a salt blend with a melting point of 431°F (222°C). This significantly expands the operational flexibility of the salt used in high temperature applications.

Temperature Range of Heat Transfer Salt?

 

Molten Salt  ( The sodium nitrate/potassium nitrate salt ) Can Operate  generally is used from 545 to 1049°F (285 to 565°C)

 

Benefit of Heat Transfer Salt Generally, nitrate salts provide a balance of wide operating range, thermal stability, corrosion performance and cost.

 

 

Advantage of the nitrate salts is corrosion performance . Nitrate salts are compatible with stainless steels up to 1049°F (565°C) and even carbon steel if the operating temperature is kept below 752°F (400°C). This makes them advantageous to use with common materials of construction to keep costs low. It is not advised to use yellow metals such as copper or brass with molten salts because they are not as compatible as steel at higher temperatures.

Heat Transfer Salt Molten salts are also used in applications of solar power plants (CSP), where the salt can store heat obtained from sunlight for long periods of time. Some of these CSP systems flow the salt directly through the receiver tubing, where sunlight hits a parabolic mirror and concentrates the sunlight to a tube in which the salt flows. 

 

Other systems may use molten salts for preheating natural gas lines or keeping reactors hot by using the molten salt in the jacket around a tank. Salts also have relatively high latent heat capacity — similar to many of the phase-change waxes that are used today — and are sometimes used in phase-change applications. When salts melt, they absorb large amounts of heat, and when they freeze, they release large amounts of heat. By utilizing this phenomenon, it is possible to create advanced thermal storage or temperature-regulating systems, depending on the process.

Molten salt is salt that is solid at standard temperature and pressure (STP) but enters the liquid phase due to elevated temperature. A salt that is normally liquid even at STP is usually called a room temperature ionic liquid, although technically molten salts are a class of ionic liquids.

 

Molten salts have a variety of uses. Molten chloride salt mixtures are commonly used as baths for various alloy heat treatments, such as annealing and martempering of steel. Cyanide and chloride salt mixtures are used for surface modification of alloys such as carburizing and nitrocarburizing of steel.

 

Cryolite (a fluoride salt) is used as a solvent for aluminium oxide in the production of aluminium in the Hall-Héroult process. Fluoride, chloride, and hydroxide salts can be used as solvents in pyroprocessing of nuclear fuel. Molten salts (fluoride, chloride, and nitrate) can also be used as heat transfer fluids as well as for thermal storage. This thermal storage is commonly used in molten salt power plants.

 

Molten salts, sometimes referred to as salt melts, are a family of products used for a wide range of applications like high-temperature process heating, heat treating and annealing of steel, and thermal storage in solar thermal power plants. These salts are composed of fluoride, chloride, and nitrate salts.

 

Molten salt By Product Type

 

Binary Molten Salt

Ternary Molten Salt

 

Molten salt Applications Type

 

Thermal Energy Storage

Chemical Industry

Metallurgical Production

 

 

 

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