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Iron ore three cylinder rotary kiln project

Key words: iron ore three cylinder rotary kiln project
Case overview: In Changzhou Yixin drying equipment Co., Ltd., the drying system of three cylinder rotary kiln for iron ore is that the materials are pre heated to 100-300 degrees before entering the rotary kiln for roasting and reduction process. The waste heat energy of the rotary kiln is used in this process, which not only improves the output of the rotary kiln, but also saves about 30% of coal.
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Iron ore includes hematite, limonite and siderite
1、 Brief introduction of three cylinder rotary process flow of Limonite:
I. The raw ore is directly fed into the kiln tail of the rotary kiln through the electronic belt measuring scale, belt conveyor, stable silo and air lock valve from the storage, and only the stable silo is set at the kiln tail to reduce the investment.



  2、 When the ore enters the rotary kiln, it is heated first. The raw ore moves reversely with the hot gas flow in the kiln. In the heating area, the raw ore is heated to the reduction temperature and then enters the reduction area,
3. The flame center temperature in the reduction zone is controlled at about 1000 ℃, and the thermal atmosphere temperature in the reduction zone is controlled at about 700 ℃. It reacts with reduction gas to reduce magnetite.
4. After that, it enters the cooling belt and meets the incoming gas. The gas is preheated. The ore is cooled and discharged out of the kiln. After being cooled by the continuous bucket conveyor, it is put into the storage for selection.
2、 Three cylinder rotary characteristics of Limonite:
     limonite rotary kiln mainly adopts block and powder mixed firing to reduce operation cost.



3、 Brief introduction of siderite three cylinder rotation:
The preheater is of high quality and stable operation. The kiln head cover of siderite rotary kiln adopts large volume mode, and the kiln door structure is opened to make the air flow more stable. The sealing form of siderite rotary kiln head and kiln tail is simple in structure, convenient in maintenance and new in drying The production of siderite rotary kiln adopts the excellent sealing form in China.


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