Method for producing iron ore concentrate by quickly burning siderite through microwave
A technology of siderite and iron concentrate, which is applied in the field of microwave rapid calcination of siderite to produce iron concentrate, can solve the problems of large amount of flue gas, high cost, and easy sintering, and achieve high iron ore grade, improved grade, The effect of little pollution
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[0017] Example 1
[0018] Put 10Kg of siderite powder with 40% iron content and 0.2% moisture content in a microwave reactor, and pass oxygen according to the mass ratio of oxygen to siderite of 1:18, with a frequency of 2450MHz and an input power of After 3000W is heated to 660℃, keep it for another 10 minutes, stir the siderite powder during the microwave heating and heat preservation process, that is, the high-grade, main component is Fe 3 O 4 The iron ore concentrate (iron grade is 56%).
Example Embodiment
[0019] Example 2
[0020] Put 15Kg of siderite powder with 40% iron content and 0.2% moisture content in a microwave reactor, and inject oxygen at a mass ratio of oxygen to siderite of 1:22, with a frequency of 2450MHz and an input power of After 4000W is raised to 500°C, the temperature is kept for another 30 minutes, and the siderite powder is stirred during the microwave heating and heat preservation process to obtain a higher grade and the main component is Fe 3 O 4 Iron ore concentrate (iron grade is 58%).
Example Embodiment
[0021] Example 3
[0022] Put 100Kg of siderite powder with 41% iron content and 0.2% moisture content in a microwave reactor, add 7Kg of limonite, and add oxygen according to the mass ratio of oxygen to siderite of 1:20. It is 2450MHz and the input power is 14KW. After heating up to 600℃, keep it for another 60 minutes, and stir the siderite powder during the microwave heating and heat preservation process to obtain a higher grade and the main component is Fe 3 O 4 Iron ore concentrate (iron grade is 58%).
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