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SINO-FOUNDRY—professional refractory manufacturer
The refractory dry ramming mass manufacturer will show you why it is the first choice for converter lining
2022-10-12
The refractory dry ramming mass manufacturer tells you that the ramming material refers to the unshaped refractory material that is constructed by ramming (manual or mechanical) and hardened under the action of heating above normal temperature.
The refractory dry ramming mass manufacturer tells you that the ramming material refers to the unshaped refractory material that is constructed by ramming (manual or mechanical) and hardened under the action of heating above normal temperature. Commonly used as filler for induction furnaces, heating furnaces, furnace linings and converter linings, manual or mechanical tamping methods are used to construct indeterminate refractories.

The refractory dry ramming mass manufacturer tells you that since they are all composed of granular and powdered materials, they should be constructed by vigorous ramming in order to make it a binder. Because the ramming material is mainly used in direct contact with the melt, grain and powder materials must have high volume stability, compactness and corrosion resistance, and the reducing materials used in induction furnaces must be insulating. The tamping material should be appropriately selected with a binder, some do not use a binder, and some only add a small amount of flux. Acid tamping materials are commonly used binders such as sodium silicate, ethyl silicate, and silica gel. Among them, the dry ramming material is mainly borate. Alkaline ramming materials are commonly used magnesium chloride salts and sulfates, etc., and are also used to form carbon-bonded organics and temporary binders when the carbon content is high at high temperatures. Among them, the dry ramming material contains an appropriate amount of iron flux. Cr type is usually used as Glauber's salt.
The refractory dry ramming mass manufacturer tells you that compared to other amorphous refractories of the same material, the ramming material is dry or semi-dry and loose, and a dense structure is obtained by dynamic compaction. The bond has strength only when heated to the sintering temperature. After tamping, the mixture can be hardened and sintered by different heating methods, depending on its hardening properties. The refractory dry ramming mass manufacturer tells you that if it contains inorganic chemical binders, it can be removed by mold baking to remove up to a certain strength of self-hardening; contains thermoplastic carbon binders, to be cooled after considerable demolding strength, before use It should be rapidly heated to coking; and often does not harden at room temperature after the mold is sintered and rammed. Therefore, ramming material has become the first choice for converter lining.
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