Flare Stones

Firing stones are insulating materials used in electric resistors. They are produced using high-purity magnesium oxide (MgO) and possess superior electrical insulation, high thermal conductivity, and high temperature resistance.


Heaters with Flare Stone Working Principle

  • Electric current is applied to the wire: The electric current applied to the wire causes it to heat up.
  • Heat is transferred to the flare stone: The heat in the heated wire is transferred to the flare stone.
  • Flare stone retains heat: The flare stone distributes heat evenly and prevents it from spreading due to its high thermal conductivity.
  • Heat is preserved: The flare stone preserves heat for extended periods due to its resistance to high temperatures. Flare stone plays a significant role in effectively insulating and protecting heat in many electric heating systems.

Flare Stone Technical Specifications

  • Material: High purity magnesium oxide (MgO)
  • Temperature resistance: Up to 1700°C
  • Thermal conductivity: 25-30 W/mK
  • Dielectric strength: 5 kV/mm
  • Density: 3.6 g/cm³
  • Thermal expansion coefficient: 12.5 x 10^-6 K^-1
  • Melting point: 2800°C
  • Chemical resistance: Resistant to most chemicals.

Types of Flare Stone Heaters

  • Cylindrical flare stones: These flare stones are the most commonly used type. They are used in ovens, heaters, and other heating applications.
  • Flare stones for underfloor heating cables: These flare stones are specially designed for cables used to heat floors.
  • Flare stones for industrial furnaces: These flare stones are used to insulate and protect heat in industrial furnaces.
  • Flare stones for resistor heaters: These flare stones are used to insulate and protect heat in resistor heaters.

Heaters Used in Flare Stone Manufacturing

  • Nickel-chromium alloy heaters: This type of heating elements are resistant to high temperatures and have a long lifespan. They are commonly used in ovens, heaters, and other applications requiring high temperatures.
  • Kanthal heaters: They are resistant to high temperatures and resistant to oxidation. They are widely used in industrial furnaces and similar high-temperature applications.
  • Stainless steel heaters: They are resistant to corrosion and can be used in moist environments. They are often preferred in heaters and other corrosion-resistant applications.

Applications of Flare Stone Heaters

  • Baking Ovens: They are used to preserve heat and insulation in ovens, allowing for more efficient operation and energy savings.
  • Heating Devices: They are used to protect and insulate the resistors inside heaters, ensuring longer durability and safe operation.
  • Industrial Furnaces: They are used to preserve and insulate the high temperatures of industrial furnaces, allowing for more efficient operation and energy savings.
  • Resistance Heaters: They are used to protect and insulate the resistors inside resistance heaters, ensuring longer lifespan and safe operation.

Advantages of Flare Stone Heaters

  • High Temperature Resistance: Flare stones can withstand temperatures up to 1700°C, making them ideal for furnaces, heaters, and other high-temperature applications.
  • Excellent Electrical Insulation: They provide excellent electrical insulation, reducing the risk of leakage in electric resistors and ensuring safe operation.
  • Mechanical Strength: Flare stones are resistant to impacts and vibrations, making them a durable choice even in challenging conditions.
  • Long Lifespan: When used correctly, flare stones can last for many years.
  • Production in Different Sizes and Shapes: Flare stones can be produced in different sizes and shapes, making them suitable for various applications.