A device and method for lightly burning magnesite and dolomite by microwave
A magnesite and dolomite technology, applied in lime production and other directions, can solve the problems of poor product quality, waste of energy, serious pollution, etc., and achieve the effects of fast heating speed, environmental protection and high degree of automation
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Embodiment 1
[0038] Embodiment 1: A kind of device of microwave heating light burnt magnesite, dolomite, see Figure 1-3 , including microwave heating furnace, control circuit and PLC, microwave heating furnace 1 includes furnace body 1-1, inner cavity 1-2, furnace cover 1-6, discharge pipe 2 and microwave source 1-10; several microwave sources 1 -10 are evenly distributed on the outer side of the furnace body 1-1 in a circular shape; the inner cavity 1-2 of the microwave heating furnace is a cylindrical cavity, and a thermocouple 1-9 is arranged in the cavity, and insulation materials 1-3 are wrapped around the cavity , the bottom of the inner cavity 1-2 is connected with the discharge pipe 2, and the discharge pipe 2 is provided with a discharge valve 2-1; the furnace cover 1-6 is provided with an exhaust pipe 1-4, and the bottom of the furnace body 1-1 A drainage pipe 1-5 is provided; the product of microwave heat treatment is discharged from the discharge port 3 through the discharge p...
Embodiment 2
[0042] Embodiment two: a kind of method utilizing the microwave device of example one to lightly burn magnesite, comprises the following steps (see Figure 1-Figure 6 ):
[0043] (1) In this example, four microwave heating furnaces are adopted, namely the No. 1 furnace, the No. 2 furnace, the No. 3 furnace and the No. 4 furnace, which are connected in parallel through the PLC control circuit, and after the magnesite is crushed to particles less than 20mm, respectively Measure 300 kg into 4 microwave heating furnaces, cover the furnace lids, and seal them well;
[0044] (2) Turn on the microwave heating furnace to heat the material. The power of the microwave heating furnace is 30-40KW. Adjust the output power of the microwave oven to raise the temperature of the material at a rate of 5°C per minute, and detect the temperatures in the No. 1 furnace, No. 2 furnace, No. 3 furnace and No. 4 furnace respectively to make it After reaching 840°C, keep warm at this temperature for 2...
Embodiment 3
[0048] Embodiment three: the method for lightly burning dolomite utilizing the microwave device of example one is basically the same as example two, and the difference is that: (1) six microwave heating furnaces are adopted in this example, and six microwave heating furnaces pass through the PLC control circuit Parallel connection, after the dolomite is crushed to particles smaller than 20mm, measure 300 kg respectively and put them into 6 microwave heating furnaces, cover the furnace lids, and seal them well;
[0049] (2) Turn on the microwave heating furnace to heat the material. Adjust the output power of the microwave oven to raise the temperature of the material at a rate of 10°C per minute, respectively detect the temperature in the six heating furnaces, make it reach 860°C, and then keep it at this temperature for 30 minutes; (3) Close after heating Microwave oven, open the discharge valve, the material is discharged from the discharge port through the discharge pipe, a...
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Abstract
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