Washing separation device containing powder block material and separation method thereof

A block material and separation device technology, applied in the fields of material separation, mining, and metallurgy, can solve the problems of high operating costs, increased cost of blast furnace ironmaking, long washing time, etc., to reduce system occupation and investment, and benefit Sedimentation and concentration, to ensure the effect of effective sedimentation and concentration

Inactive Publication Date: 2011-01-05
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This vibrating sieving method has high screening efficiency in non-rainy seasons or when the original water content of lump ore is low (<4%), and is easy to operate and low in cost. It is a mature, economical and effective way to reduce the powder content of lump ore. However, in the rainy season or when the water content of the lump ore is high, the powder ore in the lump ore is muddy and sticks to the lump ore. At this time, it is difficult to effectively remove the powder ore of the lump ore by using a vibrating screen, which eventually leads to the lump ore entering the furnace. The high powder content of the ore affects the stability of the blast furnace
Therefore, in order to reduce

Method used

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  • Washing separation device containing powder block material and separation method thereof
  • Washing separation device containing powder block material and separation method thereof
  • Washing separation device containing powder block material and separation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Depend on figure 1 It can be seen that the lump ore with a net powder content of 35% and a water content of 6.5% is soaked in the elutriation blue (2) under the water surface of the water tank (19) by the vibrating feeder (1); then the rotating device (4) is connected to the The rod (3) drives the elutriation basket (2) to rotate, first rotates to the left 10 times, then turns to the right 10 times, then stops the rotation, then the rotating device lifts the elutriation basket out of the water surface through the connecting rod, and then removes the powder contained in the elutriation basket The lump ore is introduced into the elutriation basket of the next elutriation device, and this is repeated to realize elutriation. After several times of elutriation for powder-containing lump ore, the elutriation basket (2) is lifted out of the water surface by the rotating device (4) through the connecting rod (3), and then transferred to the finished ore conveyor belt (9) by th...

Embodiment 2

[0039] Depend on figure 1 It can be seen that the lump ore with a net powder content of 25% and a water content of 5.5% is introduced into the elutriation blue (2) under the water surface of the water tank (19) from the vibrating feeder (1) for immersion; then the rotating device (4) is connected by connecting The rod (3) drives the elutriation blue (2) to rotate, first rotate 10 times to the left, then 10 times to the right, and then stop the rotation, then the rotating device lifts the elutriation blue out of the water surface through the connecting rod, and then the elutriation blue contains powder. The lump ore is introduced into the elutriation blue of the next elutriation device, and so on, to achieve elutriation. In order to improve the separation effect, after the powder-containing lump ore is washed for many times, when the water surface is raised for the last time, the lump ore is washed with the supplementary new water (5) and circulating water (7) through the flus...

Embodiment 3

[0042] The other parts of the washing and separating device containing powder block materials are the same as in Example 1. In order to facilitate the treatment of the bottom flow of the water tank, a bottom flow conveying device is set at the bottom of the water tank, and a solid-liquid separation device is connected after the bottom flow conveying device. The liquid separation device is composed of a high-frequency screen, a mud conditioning tank, a transfer pump, and a dehydrator in sequence. Depend on figure 1 It can be seen that the underflow material conveying device is a screw conveyor (18), and the underflow material in the water tank (19) is conveyed by the screw conveyor (18) to the high-frequency screen (17), and the material on the screen enters the coarse powder yard (16), and the underflow material is sieved. The material flows into the slurry conditioning tank (15) and stirs evenly, and is transported to the dehydrator (12) by the slurry pump (14) for processin...

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Abstract

The invention discloses a washing separation device containing a powder block material, which is characterized in that more than one elutriation device is arranged near a water channel, the elutriation device comprises an elutriation basket, a connecting rod and a rotary device, the rotary device drives the elutriation basket to horizontally rotate through the connecting rod, and the elutriation basket enters downside of the water surface of the water channel in the elutriation process. The washing separation method of the device comprises the following steps of: firstly, guiding a powder-containing lump ore into the elutriation basket below the water surface of the water channel for soaking; then driving the elutriation basket for rotary motion by the rotary device through the connecting rod, rotating to the left for 10 times, and then rotating to the right for 10 times, repeating the steps to realize elutriation, elutriating the powder-containing lump ore for many times, raising the elutriation basket out of the water surface by the rotary device through the connecting rod, then transferring to a conveying belt of a finished ore product by a material-receiving hopper and then transporting to a finished product ore storage yard. After the block material is separated by the device, a net powder-containing rate can be reduced to about 3.0% and the sieving efficiency reaches 92% under the circumstance that the net powder-containing rate is 35% and 25% and the water-containing rate is 6.5% and 5.5%.

Description

technical field [0001] The invention belongs to the field of material separation, and in particular relates to a water washing separation device and a separation method for powder-containing bulk materials in the fields of mines and metallurgy. Background technique [0002] Lumpy materials and powdery materials are usually sieved by a vibrating sieve, but when the humidity is high or the moisture content of the material is high, the powdery material and the bulky material are bonded to each other. At this time, it is difficult to separate the bulky material from the powdery Material separation. In the field of mining and metallurgy, it is often necessary to separate the fine ore from the lump ore. With the changes in the iron ore resource market, the demand for lump ore by iron and steel enterprises continues to increase, and the powder content of the lump ore that is directly fed into the furnace is required to be lower and lower. However, the actual imported lump ore is r...

Claims

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Application Information

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IPC IPC(8): B03B5/48
Inventor 金俊苏允隆黄发元宋灿阳李小静刘自民张晓萍刘英才秦学武
Owner MAANSHAN IRON & STEEL CO LTD
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