Kiln is the equipment that enables products to complete certain temperature curve, atmosphere curve and pressure curve coupling processing.The kilns we discussed are limited to electric heating kilns, mainly resistance furnaces.
Main use of kiln
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one
Complete temperature curve requirements
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Complete the requirements of the atmosphere curve
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As required by the pressure curve, the above three points can also be called the three elements of the kiln.
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Basically, all kinds of kilns are designed to complete the combination of the above three elements.
classification
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1. According to the type of calcined materials, it can be divided into: ceramic kiln, cement kiln, glass kiln, enamel kiln, lime kiln, etc;
2. The former can be divided into continuous kiln (tunnel kiln), semi continuous kiln and intermittent kiln according to the operation method;
3. According to pyrogen, it can be divided into flame kiln and electric kiln;
4. According to the heat source facing the green body, it can be divided into open flame kiln, flameproof kiln and semi flameproof kiln;
5. It can be divided into kiln car kiln, pusher kiln, roller hearth kiln (roller hearth kiln), conveyor belt kiln, walking beam kiln and air cushion kiln according to the green body carrier;
6. According to the number of channels, it can be divided into single channel kiln, double channel kiln and multi-channel kiln.
common sense
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1. Generally, the fuels of large kilns are mostly heavy oil, light diesel oil or gas and natural gas.
2. The kiln is usually composed of four parts: kiln chamber, combustion equipment, ventilation equipment and conveying equipment.
3. Most electric kilns use electric furnace wire, silicon carbide rod orMolybdenum disilicideAs a heating element, its structure is relatively simple and easy to operate, and there are many kinds of atmosphere kilns.
4. In specific industries, there are more subdivided types of kilns, such asCement rotary kilnGlass tank kilns, steel blast furnaces and converters, and some equipment in the chemical industry can also be classified as kilns.However, industrial kilns in the general sense mainly refer to metal andInorganic materialsCalcination equipment.
5. The kilns are roughly divided into box type, well type, shuttle type, mesh belt type, rotary type, kiln car type, pusher plate tunnel resistance furnace, vacuum furnace, gas protection furnace, ultra-high temperature tube pusher furnace (carbon tube furnace), tungsten molybdenum powder baking furnace, reduction furnace and other high, medium and low temperature industrial kilns, with operating temperature of 200~2500 ℃.It can be used for ZnO varistors, arrester valve pieces, structural ceramics, textile ceramicsPTC&NTC thermistors, electronic ceramic filters, chip capacitors, ceramic dielectric capacitors, thick film circuits, chip resistors, magnetic materials, powder metallurgy, electronic powders, rare earth chemicals, focusing potentiometers, ceramic substrates, high alumina ceramics and their metallization, contact materials, hard alloy materials, tungsten molybdenum materials, etc.
