The refractory ramming material is prepared from a high proportion of granular and powdery materials and a very low proportion of binders and other components, even all of which are composed of granules and powders, and are subject to strong ramming. Bulk materials for construction.
Ramming material for blast furnace
The refractory ramming material is prepared from a high proportion of granular and powdery materials and a very low proportion of binders and other components, and even all of them are composed of granules and powders. Bulk materials for construction.
Because the material is mainly used for the direct contact with the molten material, it is required that the granular and powdery materials must have high volume stability, compactness and corrosion resistance, and the induction furnace should also have insulation.
Compared with other unshaped refractories of the same material, the ramming material is dry or semi-dry and loose, and a dense structure is obtained by strong ramming. Only when heated to a sintering degree, the combined body material has strength.
After the ramming material is formed, different heating methods can be adopted to promote its hardening or sintering according to the hardening characteristics of the mixture. If it contains inorganic chemical binder, it will harden on its own.
It can be demolded and baked after having a considerable strength; if it contains a thermoplastic carbon mixture, it will be demolded after cooling to have a considerable strength, and it should be heated quickly before use to make it coking; and it does not contain a binder that hardens at room temperature, often after tamping. Sintered with die row.
|
item |
GT-1 |
GT-2 |
GT-3 |
|
|
Al2O3 |
60 |
58 |
58 |
|
|
Sic+C |
20 |
13 |
12 |
|
|
Bulk density(g/cm3)≥ |
110℃×25h |
2.35 |
2.30 |
2.40 |
|
Line rate of change% |
1450℃×3h |
±0.5 |
±1.0 |
±0.8 |
|
Compressive strength |
110℃×24h |
5 |
10 |
10 |
|
1450℃×3h |
35 |
20 |
1.5 |
|
|
use |
Small blast furnace main trench working layer |
Small blast furnace branch trench working layer |
No-bake ramming material |
|
The use and characteristics of ramming material:
For small blast furnace tapping system with only single tap hole or local emergency repair of large and medium blast furnace tapping system, the ramming materials listed in the above table can be used.
Among them: GT-3 is a non-baking ramming material, which adopts a new type of combination system, which does not generate water vapor during the use process, so that the iron can be directly tapped after ramming construction without any test. Thereby improving the operation of the equipment; the purpose of efficiency.
It can be widely used in the main ditch of the tap ditch of medium and small blast furnaces and all parts of the tap ditch that need to be fast.
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low porosity clay bricks are mainly used in the regenerators of glass kilns. They can also be used in blast furnaces and hot blast furnaces in the steel industry; cement kilns in the building materials industry; chemical kilns in the chemical industry as kiln linings
Refractory ramming mass (refractory taphole mass) is a kind of Refractory used for lining of blast furnace tapping groove. It is mainly used to protect the blast furnace out of the ditch from high-temperature hot metal and slag erosion and erosion, and has excellent high-temperature resistance and wear resistance. The ramming material for the iron discharge ditch is usually composed of corundum, silicon carbide and carbonaceous material, which has the ability of resisting hot metal and molten slag erosion and scouring, reburning line change small, strong resistance to a variety of oxidation characteristics. The construction of the ramming material for the iron ditch is convenient, easy to dismantle and repair, does not produce harmful gas, and is beneficial to environmental protection.
The alkali-resistant brick for cement kiln has the characteristics of strong alkali erosion resistance, good thermal shock resistance and high cost performance.
Coke furnace silicon bricks are mainly used in the heat storage room, oblique road, charcoal room, combustion room, top of the furnace, and bottom of the furnace.
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
High alumina refractory bricks are the backbone of high-temperature industrial processes. By understanding their properties, applications, and supplier selection criteria, businesses can enhance operational efficiency and reduce downtime. For industries seeking durable, cost-effective solutions, partnering with certified refractory materials suppliers in China ensures access to cutting-edge technology and reliable supply chains.
Refractory castable is a kind of refractory material that does not need to be formed and has good fluidity after being fired and stirred with water.

