Reverberatory Furnaces

Silcarb manufactures Reverberatory Furnaces as per customer’s requirements and up to capacities of 10000 kgs. Reverberatory Furnaces for scrap melting are manufactured by Silcarb. Silcarb also does ‘on-site’ installation and rework of Reverberatory Furnaces.

A reverberatory furnace is a metallurgical or process furnace that isolates the material being processed from contact with the fuel, but not from contact with combustion gases. A furnace or kiln in which the material under treatment is heated indirectly by means of a flame deflected downward from the roof. Reverberatory furnaces are used in a copper, tin, and nickel production, in the production of certain concretes and cements, and in aluminum. Reverberatory furnace heat the metal to melting temperatures with direct-fired wall-mounted burners. The primary mode of heat transfer is through radiation from the refractory brick walls to the metal, but convective heat transfer also provides additional heating from the burner to the metal. The basic advantage of a reveb/skelnar furnace is the ease of operation and relatively low maintenance cost. It also has a low capital investment cost. The disadvantages would be high oxidation losses due to the large surface area exposed to a direct flame and also higher fuel consumption compared to a shaft furnace.

Reverberatory furnaces heat the aluminum to melting temperatures with direct-fired wall-mounted burners. The primary mode of heat transfer is through radiation from the refractory brick walls to the aluminum, but convective heat transfer also provides additional heating from the burner to the aluminum. Reverberatory furnaces are available with capacities ranging from up to 150 tons of molten aluminum. Typical aluminum reverberatory furnaces have melting efficiencies of 15%-39%. Recuperation can also enhance reverberatory furnace efficiencies by 10%-15%, but also adds to maintenance costs. The advantages provided by reverberatory aluminum melters is the high-volume processing rate, and low operating and maintenance costs. The disadvantages of the reverberatory aluminum melters is the high metal oxidation rates, low efficiencies, and large floor space requirements.

Advantages and Disadvantages

Some of the prominent advantages of a reverberatory furnace are high volume processing rate and low operating as well as maintenance costs. Whereas, the disadvantages include low efficiencies, high metal oxidation rates and usually a large space is required.

These furnaces are primarily used when a large volume of aluminum needs to be melted and alloyed (typically when a combination of scrap/virgin metal is used).

Silcarb makes dry hearth as well as wet hearth reverberatory/skelnar furnaces. We manufacture reverberatory furnace/skelnar furnaces for clean scrap (UBC cans, extrusion scrap, bailed chips, etc) melting as well as engine scrap where typically there would be ferrous metal inserts.

We design the hearth of the furnace in a manner where the ferrous metal inserts stay back in the dry hearth thereby reducing the ferrous uptake in the holding area.

Silcarb also make large reverberatory furnaces with magnetic agitators for uniform mixing of aluminum with various alloy elements

The bed of the furnace is made with high-quality stainless steel for the effective operation of the magnetic stirrer.

Special vortex melters, especially for chip melting, are also manufactured by Silcarb.

Do get in touch for detailed technical and commercial offers on these special types of high efficacy melters…

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