Belt furnace

Cast-link belt furnaces Cast molding Castner cell Castner process... 

Cast lead-calcium-tin alloys, 14 775 Cast-link belt furnaces, 12 289 Cast-mature process, in bar soap manufacture, 22 749 Cast multicrystalline silicon material, 23 40... 

Merry-go-round systems, 14 408 Mes, buffer for ion-exchange chromatography, 3 830t Mescaline, 2 84, 85 Mesh-belt furnace, 12 289 Mesh wick, 13 232... 

The IT Corporation thermal destruction unit is a mobile unit that uses infrared incineration technology. The main objective of this process is to transform the feedstock into another form (an ash acceptable for delisting) while assuring safe discharge of exhaust gas products to the environment. The unit is capable of on-site remediation of wastes and soils contaminated with polychlorinated biphenyls (PCBs) and other organics. This technology is based on a conveyor belt furnace process. 

Cast-link belt furnaces - pURNACES,ELECTRIC - RESISTANCE FURNACES] (Vol 12)... 

Reactivation of Granular Carbon in an Infrared Traveling Belt Furnace U.S. Environmental Protection Agency, 1987, EPA/600/S2-87/048. 

The furnace is a belt furnace with a well defined temperature profile as shown in Figure 27.16. The time at peak temperature is between 6 and 10 minutes during which time the inorganic components sinter together and bond to the substrate. 

TGA is used to qualify adhesives for use at process temperatures such as those experienced during belt-furnace sealing. The standard test procedure for this method is ASTM D3 850, Rapid Thermal Degradation of Solid Electrical Insulating Materials by Thermogravimetric Method. Accord-... 

Belt furnaces having independently controlled heated zones through which a belt travels at a constant speed are commonly used for firing thick films. By adjusting the zone temperature and the belt speed, a variety of time vs. temperature profiles can be achieved. The furnace must also have provisions for atmosphere control during the firing process to prevent reduction (or, in the case of copper, oxidation) of the constituents. 

In high volumes, the substrates are fired on a continuous belt furnace. This furnace must be very long and takes up a great deal of space. Alternatively, the substrates may be fired in the batch mode in a programmable kiln as... 

Processing equipment — belt furnace. (Photograph courtesy of DuPont and Co.)... 

The dry-powder processes generally employ wire screen precut to the so-called master plaque dimension. The screens are placed in molds with loose powder on each side. They are then typically sintered in a belt furnace in a reducing atmosphere at 800 to lOOO C. 

Two entirely different approaches to the growth of fibers were required for [Ca(P03)2]Ai and [NaCa(P03)3] fibers. Calcium polyphosphate fibers were grown as dendritic spherulites, while sodium calcium polyphosphates were grown as single crystals that were not fibrous in any respect until milled. Both crystals could be grown in a belt furnace discussed below, but only the [NaCa(P03)3] crystals could be grown in a calciner in which feed crystals were sprayed with feed liquor. With additional work it is possible that even the [Ca(P03)2]n could have been grown in this approach, but the decision had been made to commercialize [NaCa(P03)3] crystals rather than calcium polyphosphate crystals. Both approaches will be discussed in detail. 

Figure 7.4. The belt furnace used to prepare larger samples of [NaCa(P03)3] fibers. Reprinted by courtesy of the Harper Electric Furnace Corp.

Figure 7.5. Graphite dish used to grow crystals in the belt furnace.

Belt furnaces provide ease of process automation. Some automated production lines utilize a dryer and firing furnace with a common belt. Airflow rates inside the dryer, drying temperature, and time influence the drying process. 

Figure 70 Continuous microwave belt furnace. Reproduced with permission from Linn High Therm, http //www.linn.de, 19 December 2010. ...

Belt furnace A fiornace where the part is moved through the hot zone on a moving belt. 

The microwave-assisted vulcanization of mbber compounds is the most important application of microwave heating to polymeric materials in terms of number of installed plants (Krieger, 1992). The processing capacity is about 500 kg/h. Control of the process and especially the extent of installed microwave output heat is typically 1 kW per 30 kg (approximately) of the product per hour. Continuous microwave belt furnaces are also available, where microwave generators are arranged in a spiral around the longitudinal axis of the cylindrical chamber to achieve a more uniform energy distribution. 

TABLE 27 Peak Temperatures for a Range of Component Volumes When Attached to Various Assemblies using a Convection Belt Furnace... 

Alternatively, soldered-cored wire (where the solder alloy is of the required karatage) is used to make the chain, which is also postsoldered in a belt furnace. On more modem machines, instead of postsoldering, the solid wire links are automatically welded by laser or microplasma welding torch in situ on the machine [35]. 

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