A kind of iron ore powder particle size wind classification system and method

A technology for air classification and iron ore, applied in the field of iron ore powder air classification and iron ore powder particle size air classification system, can solve the problem of inability to handle accurate classification, reduce the chance of entering the kiln, improve production efficiency, and solve the problem easily. The effect of the loop

Active Publication Date: 2016-08-24
JIUQUAN IRON & STEEL GRP
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the above air separators all have a specific particle size processing range, and they cannot handle the accurate classification of the wide particle size range of 0-5mm when used alone. Comprehensive wind classification system for precise classification of iron ore powder

Method used

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  • A kind of iron ore powder particle size wind classification system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a wind power classification system for iron ore powder particle size includes a blower 8, a primary horizontal wind separator 1, a secondary horizontal wind separator 2, a vertical wind separator 3, a cyclone wind separator 4, a bag collector 5, The first silo 11, the second silo 12, the third silo 13 and the air outlet 7; the first-level air separator 1 includes a feed port 101 and the discharge port 102; the second-level air separator 2 includes an inlet Feed port 201, discharge port 202, vertical air separator 3 includes feed port 301, discharge port 302; cyclone wind separator 4 includes feed port 401, discharge port 402; cloth bag collector 5 includes feed port 501 and air outlet 502;

[0028] The feed inlet 101 of the primary horizontal air separator 1 is connected to the hopper 9, and the discharge port 102 is connected to the feed inlet 201 of the secondary horizontal air separator 2. One side of the feed inlet 101 of the primary hori...

Embodiment 2

[0037] The iron ore powder particle size wind classification system of this embodiment is the same as that of Embodiment 1.

[0038] The method of using the above-mentioned grading system in this embodiment to carry out 0-5mm particle size iron ore powder particle size wind classification is to use the iron ore powder with a particle size of 0-5mm and a water content of less than 6% from the hopper and the first-level horizontal wind separator 1 The feed port 101 of the feeder is evenly fed into the primary horizontal air separator 1, and air is used as the air separation medium. Under the action of the blower 8, the iron ore powder passes through the primary horizontal air separator 1 and the secondary horizontal air separator in sequence. 2. The vertical air separator 3, the cyclone air separator 4 and the bag collector 5 carry out particle size classification; during the classification process, the wind pressure of the air outlet 801 of the blower 8 is controlled to 18Kpa, a...

Embodiment 3

[0041] The iron ore powder particle size wind classification system of this embodiment is the same as that of Embodiment 1.

[0042] The method of using the above-mentioned grading system in this embodiment to classify iron ore powder with a particle size of 0-5mm and a water content of less than 6% by wind power classification is to use the hopper and the first-level horizontal air separator The feed port 101 of 1 is evenly fed into the first-level horizontal air separator 1, and the rotary kiln flue gas is used as the air-selection medium. Under the action of the blower 8, the iron ore powder passes through the first-level horizontal air separator 1 and the second-level air separator in turn. The horizontal wind separator 2, the vertical wind separator 3, the cyclone wind separator 4 and the bag collector 5 carry out particle size classification; during the classification process, the air pressure of the air outlet 801 of the blower 8 is controlled to be 20Kpa, and the solid-...

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Abstract

The invention provides a wind power classification system for iron ore powder particle size and a wind power classification method for iron ore powder using the system. The wind power classification system of the present invention comprises blower, horizontal winnowing device, vertical winnowing device, cyclone winnowing device, cloth bag collector and air outlet connected successively, and the air outlet of described blower is connected with horizontal winnowing device and vertical winnowing respectively. The bottoms of the horizontal air separator and the vertical air separator are connected to the first storage bin, the bottom of the cyclone air separator is connected to the second storage bin, and the bottom of the bag collector is connected to the third storage bin. The utilization of the present invention has realized the precise classification of the particle size of the 0-5mm grain size iron ore powder; by effectively sorting out the 1-5mm grain size iron ore powder, the chance of the 0-1mm grain size iron ore powder entering the kiln is greatly reduced, thereby It effectively solves the problem that the rotary kiln is easy to form rings.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a wind power classification system for iron ore powder particle size and a method for wind power classification of iron ore powder using the system. Background technique [0002] The properties of refractory iron ore in my country are complex, and the mineral composition is mainly weak magnetic minerals such as specularite, hematite, limonite and siderite. Since the refractory weak magnetic minerals are magnetized and roasted, the iron minerals in the ore will be mainly strong magnetic minerals. Therefore, it is the most effective method to treat refractory iron ore by magnetization roasting-magnetic separation process. At present, the refractory iron ore magnetization roasting equipment used in China mainly includes shaft furnace and rotary kiln. The shaft furnace is mainly used to process lump ore with a particle size of 15-100mm; the rotary kiln is mainly used to pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B9/02
Inventor 王明华权芳民展仁礼陈永祺宋治屏秦积峰尹维权李慧春白鹏飞姜华
Owner JIUQUAN IRON & STEEL GRP
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