Hot Blast Stove Refractory Material

Hot Blast Stove Refractory material Introduction
 
1. The blast furnace hot blast stove is one of the main equipments for the blast furnace of the ironmaking plant and is a heat exchange equipment. Blastfurnace is mainly used to provide high temperature hot air for the blast furnace for the reaction in the furnace. The function of the hot blast stove is to continuously provide high temperature hot air of 1000℃ or more for the blast furnace, and 25% of the heat required for blast furnace iron making comes from the hot blast stove.
 
2. Hot blast stoves of refractory materials require large heat capacity, good creep resistance, high load softening temperature, high temperature strength and good thermal shock resistance.
 
3.Refractory materials for hot blast stoves include silicon bricks, clay bricks, high alumina bricks, low creep high alumina bricks and clay bricks, lightweight heat insulation bricks, insulating refractories, spray coatings and refractory mud.
 
Different Refractories Material are Used in Parts for Blast Stove
 
1.Hot Air Stove Vault Area.
 
The vault is divided into a working layer, a filling layer and a heat insulating layer.
 
Maintaining the structural stability of the vault at high temperatures during work, evenly distribute high-temperature flue gas into the regenerator during combustion, the hot blast furnace vault area is very high, exceeding 1400 ° C. The products used in the working layer are mostly silica brick, mullite brick, andalusite brick, low creep high alumina brick. The outside of the working layer ues the insulated clay bricks.
 
2.Hot Air Stove Wall.
 
Working layer brick, filling layer and insulation layer. The working layer is made of different refractory bricks according to different temperatures, and the thickness is between 300mm and 500mm. Due to the high temperature of the upper part, the use of silica brick, mullite brick, high aluminum bricks, sillimanite bricks and clay bricks are used in the lower part of the middle part.
 
3.Hot Air Stove Regenerator.
 
The regenerator is a space filled with checker bricks, which uses internal checkered bricks to exchange heat with high-temperature flue gas and combustion-supporting air.
 
Checker bricks, which are heat storage and heat transfer media, need to have a large heating area, high thermal conductivity and quality to facilitate heat exchange and heat storage. Therefore, the upper part of the regenerator is made of siliceous checkered brick, and the middle of the regenerator is made of low creep high alumina brick, mullite brick, sillimanite brick and andalusite brick. Clay fire bricks in the lower part of the regenerator.
 
Different Hot Air Temperatures Use Different Bricks
 
1.When the hot blast stove classification temperature is less than 900℃, choose fire clay brick
 
2.When the hot blast stove classification temperature is less than 900~1100℃, the high temperature part lining and checker rerfractory brick should be made of high alumina fire brick, mullite refractory brick and sillimanite refractoy brick.
 
3.When the hot blast classification temperature is 1100~1200, the high temperature part lining and checker brick should be made of high alumina refractory brick, mullite brick and sillimanite brick or silica fire brick.
 
4.When the temperature of the hot blast stove is above 1200 ℃, the high temperature part lining and checker brick should be made of high quality silica brick and mullite brick and sillimanite brick.
 
5.Rongsheng refractory factory summarizes refractory materials for blast furnace hot blast stove
 
 

 
 Hot Blast Stove Used for Unshaped Refractory
 
1 Hot Blast Stove Used for Refractory Mud
 
A lot of silica bricks are used in the high temperature part of the hot blast stove, silicon refractory mud is needed for the brick building.
 
2 Hot Blast Stove Used for Refractory Castable
 
A clay castable is used at the bottom of the hot blast stove, and a beryl castable is used between the outer wall of the ceramic incinerator and the incineration chamber wall.
 
3 Hot Blast Stove Used for Spray Paint
 
The refractory spray coating is widely used in the hot blast stove. Different types of refractory spray coatings can be selected for the combustion chamber, regenerator, mixing chamber and various hot air duct walls of the hot blast stove. The function of the refractory spray coating is to insulate and improve the furnace body. Air tightness, maintenance of furnace shell steel, etc.
 
4 Hot Blast Stove Used for Thermal Insulation Materials
 
The insulating refractory material refers to a refractory material having a high porosity, a low bulk density, and a low thermal conductivity. More thermal insulation materials used in hot blast stoves are insulation refractory bricks and refractory ceramic fiber blanket flet,ect.
 
Hot Blast Stove Used for Refrctory Material Supplier for RS Refactory Manufacturer.
 
Rongsheng refractory castable have rich refractory raw materials and 20 years experienced in the refractory bricks manufacturing. Rongsheng refractory castable can provide specification and category as well as competitive price & high-grade quality refractory castable products.
 
Rongsheng refractory material factory provides high quality refractory bricks for the hot blast stove all year round. Rongsheng refractory factory can provide cost effective and quality guaranteed. If customer need high quality refractory bricks, refractory castble, please contact us to prove how Rongheng refractory group can meet customer any requirements that can be come ture, and can provide production capacity. Proof certificate, export certificate, quality certificate to confirm that RS group refractory products and services are satisfactory to each purchaser.