Nonferrous Industry
Reverberatory furnace, also known as flame reverberatory furnace, is a metallurgical furnace that directly heats materials through flame to smelt metal. It consists of three main parts: combustion chamber, smelting chamber and exhaust flue (chimney). The entire furnace is a rectangular smelting chamber lined with refractory material. The reverberatory furnace is an important smelting equipment for non-ferrous metals such as copper, nickel and tin.
Reverberatory furnaces include melting reverberatory furnaces and refining reverberatory furnaces. Their structures are basically the same but the refining reverberatory furnaces are smaller in size.
The operating temperature of the reverberatory furnace head is generally 1400~1500℃, and the flue gas temperature of the furnace is generally 1150~1200℃. From bottom to top, the furnace bottom is composed of asbestos board, insulation brick layer, clay brick layer, magnesia-alumina brick or magnesia brick layer. Furnace walls are mostly made of magnesia-alumina bricks or magnesia bricks. Some important parts are built with magnesia-chrome bricks in order to extend their service life. Clay bricks are generally used for exterior walls. The furnace top adopts a hanging furnace roof, and the small reverberatory furnace roof adopts a brick arch, and the arch roof material is magnesia-alumina brick.
Furnace bottom and furnace wall: sintered magnesia chrome bricks, magnesia bricks, magnesia alumina spinel bricks.
Hearth: Clay bricks, high alumina bricks, asbestos layer.
Furnace top: Sintered magnesia-chrome bricks, directly combined with magnesia-chrome bricks and magnesia-alumina bricks.
Flue duct: Sintered magnesia chrome bricks, direct bonded magnesia chrome bricks, special direct bonded magnesia chrome bricks, fused magnesia chrome bricks.
Product/Part Name
| PRODUCT NAME CHARACTERISTICS |
MAXIMUM TEMPERATURE |
Bulk Density | Chemical Composition |
| Magnesia-alumina spinel bricks dense tissue structure flexibility corrosion |
=1700℃ | =2.97 | Mg0=86 Fez03≤0.7 Alz0310-12 |
| Magnesia brick low density good corrosion resistance |
1700℃ | 3-3.2 | Mg0=97 Si02≤1.2 |
| High alumina bricks Dense structure Refractoriness under load high |
=1510℃ | 2.5 | Al203=70 Fez032.0 |
| Magnesia chrome bricks Refractoriness under load high High temperature streng th |
1650℃ | 3.1 | Cr203=18 |
| Direct bonded magnesia-chrome bricks Refractoriness under load high Excellent chemical corrosion resistance |
1650℃ | 3.1 | Mg0=56 Si02≤2.5 Cr203=18 |
| Fused rebounded magnesia-chrome bricks Low porosity Low impurity content |
1750℃ | =3.3 | Mg0=53 Si02≤1 Cr203=26 |
| Refractory clay bricks |
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