High alumina anchor brick is a kind of aluminum silicate refractory product with an Al2O3 content higher than 45% and made of mineral materials such as corundum, high alumina or sillimanite. High aluminum anchoring brick has the advantages of high fire resistance, strong acid and alkali slag resistance, and high mechanical strength at high temperature. It is widely used in the furnace roof and furnace wall. If you are interested in high alumina anchor bricks, please feel free contact us for free price list.
High Alumina Anchor Brick Definition
Anchor brick is generally made of high alumina material having an Al2O3 content of no less than 55% , whose bulk density is about 2.34 g/cm3, compressive strength is more than 50MPa, and refiring linear expansion is about 0.05% under the temperature of 1500℃. High alumina refractory material has high refractoriness, strong acid and alkali slag corrosion resistance and high mechanical strength at high temperature, so it is often used in masonry blast furnaces, hot blast stoves and various heating furnaces to improve the service life of the furnace body. That’s why we often call anchor brick as high alumina anchor brick.
High alumina anchor brick, also called suspended brick and non-metallic anchoring parts, is new type of refractory brick for industrial furnace top construction. High quality high-alumina bauxite clinker is used as the aggregate, particle gradation is reasonable, soft clay and the waste pulp paper liquid are used as the binder to make mud material, the mud material is weighed by the electronic scale, so high alumina anchor brick are formed by high pressure molding, dried and fired at high temperature.
High Alumina Anchor Bricks Specification
|Cold crushing strength （Mpa）||≥55||≥55||≥53.9||≥49||≥44.1||≥39.2|
|Refractoriness under load in 0.2MPa||≥1550℃||≥1530℃||≥1520℃||≥1500℃||≥1470℃||≥1420℃|
|Permanent linear change||1500℃×2h||-0.4~0.1||-0.4~0.1||-0.4~+0.1||-0.4~0.1||-0.4~0.1||–|
High Alumina Anchor Bricks Applications
Due to the field of use, the shape of high alumina anchor bricks is more complicated. In the process of use, high alumina anchor bricks must withstand the effects of high temperature, high pressure, load, hot air flow, atmosphere, periodic hot and cold, so the environmental conditions of them are harsh. High alumina anchor brick is new type of refractory brick for industrial furnace top construction, comprising a column composed of a hanging end and an anchor, and groove distribution on the surface of the anchor. Ribs are offered along the length direction on at least one surface of the anchor body. After the ribs are set, the tensile strength of the anchor is significantly improved due to the reinforcement and tensile effects of the ribs. The stress generated at the groove is blocked at the rib and cannot be transmitted continuously. Therefore, anchor bricks of this structure are less prone to breakage.
High Alumina Anchor Brick Properties
High alumina anchor brick is an industrial furnace top and furnace wall brick, which is embedded in the refractory castable wall and can be used after being baked at a certain high temperature to enhance the overall performance of the refractory castable.
High alumina anchor brick for sale in RS company has the following features:
- High Mechanical Strength
- High Refractoriness
- Strong Resistance to Acid and Alkali Slag
- Good Anti-strip Performance
- Excellent Thermal Shock Resistance
High Alumina Anchor Bricks Classification
High alumina anchor brick can be divided into two types: semi-dry press molding and casting vibration molding based on the molding process.
In China, the anchor bricks produced by most manufacturers are machine-formed and fired at high temperature, with high strength, good thermal shock resistance and strong peeling resistance. Due to the field of use, the shape of the high alumina anchor bricks is more complicated.
High Alumina Anchor Brick Masonry Precautions
- Carefully apply mud from both sides to prevent gas from leaking from the top of the furnace.
- High alumina anchor brickshould be built to ensure the size of the joints and correctly determine the hanging metal parts.
- The hanging part of high alumina anchor brickshouldn’t have any loss.
- Air hardening mud is generally used to prevent gas leakage in the furnace due to mud removal.
- An expansion joint should be appropriately placed between the furnace body and the hanging brick.
High Alumina Anchor Bricks Company
As a professional refractory material factory, RS company devotes to our customer’s pre-sales and after-sales work all the time, so that our company’s users feel that they can trust us and always want to cooperate with us. Everyone who is willing to buy high quality and cheap anchor bricks, please fell free contact us for free quotation.