CN101444778A - Dry method cull eliminator and application thereof - Google Patents

Abstract

The invention discloses a dry sorting machine and its application, comprising a fluidized bed, the fluidized bed is provided with a gas distributor and a gas supply device, the fluidized bed is also provided with a vibrating device, and a longitudinal end of the fluidized bed is provided with The raw ore enters the entrance, and the other end is provided with a floating substance discharge port; along the lateral side of the fluidized bed, there is an upwardly inclined sinking discharge section, and the tail end of the sinking discharge section includes a middle ore discharge port and a tailings discharge port. The tailings outlet side is higher than the middle ore outlet side. This dry sorting machine is used for sorting materials according to density. When sorting coal, it can select various products such as clean coal, medium coal, gangue, etc., with high efficiency and stable operation.

Description

Dry Separator and Its Application

technical field

The invention relates to a mineral processing technology, in particular to a dry separation machine and its application.

Background technique

Air dense medium fluidized bed coal preparation uses the gas-solid suspension formed by the contact of air and aggravated matter as the separation medium. The density of the suspension is basically equal to the separation density. It is a dry dense medium separation with high separation accuracy. , The advantages of wide adaptability.

As shown in Figure 1, it is a schematic structural diagram of an air heavy medium fluidized bed separator in the prior art, including air chambers, gas distributors, separation chambers and scraper conveyors. The middle part of the separator is fed in, the light-density material floats up, and the heavy-density material sinks, and the floating and sinking materials are discharged by the stepless chain scraper conveyor.

There are at least the following disadvantages in the above-mentioned prior art:

The utilization rate of the effective area in the sorter is too small, the material is fed from the middle of the sorter, and the actual effective sorting area only accounts for half of the entire sorting area, resulting in a low processing capacity per unit area of the sorter; the discharge scraper The gap between the gas distributor and the gas distributor may be filled with flat gangue blocks, and the extruded coal particles are embedded in the pores, causing local blockage of the gas distributor, affecting the uniformity of air distribution and the long-term stable operation of the separator.

Contents of the invention

The object of the present invention is to provide a dry sorting machine with high efficiency and stable operation and its application.

The purpose of the present invention is achieved through the following technical solutions:

The dry separator of the present invention comprises a fluidized bed, the fluidized bed is provided with a gas distributor and a gas supply device, one end of the fluidized bed is provided with an ore inlet; the other end is provided with a float discharge port ; One side of the fluidized bed is provided with a sediment discharge section; the fluidized bed is provided with a vibrating device.

The application of the above-mentioned dry sorting machine of the present invention is characterized in that the dry sorting machine is used for mineral sorting, and the products after sorting include floating objects and sinking objects, and the floating objects are low-density concentrates .

As can be seen from the technical scheme provided by the present invention, the dry separator and its application according to the present invention, since the raw ore inlet and the float outlet are respectively arranged at the two ends of the fluidized bed, and the sink discharge section is arranged It is located on one side of the fluidized bed, and the fluidized bed is equipped with a vibrating device. On the basis of fluidized separation, vibration separation is added, and the material is discharged through vibration, with high efficiency and stable operation.

Description of drawings

Fig. 1 is the structural representation of dry sorting machine in the prior art;

Fig. 2 is the structural representation of the dry sorting machine of the present invention.

Detailed ways

The preferred embodiment of the dry separator of the present invention is shown in FIG. 2 , which includes a fluidized bed 1 provided with a gas distributor and a gas supply device 10 . The fluidized bed 1 is also provided with a vibration device 4 . One end of the fluidized bed 1 is provided with a raw ore inlet 2; the other end is provided with a float outlet 3. On the basis of fluidized separation, vibration separation is added, and the material is discharged through vibration, with high efficiency and stable operation.

A shifting wheel 5 can be arranged above the fluidized bed, and the shifting wheel 5 can be close to the float outlet 3 .

One side of the fluidized bed 1 is provided with a sediment discharge section. Specifically, a sediment discharge port 6 may be provided on one side of the fluidized bed 1 , and the sediment discharge section is connected to the sediment discharge port 6 .

The sediment discharge section may include a discharge bed 7 , and the discharge bed 7 may be connected with the vibrating device 4 . The discharge bed 4 may be provided with a gas distributor and a gas supply device 10 .

The discharge end of the discharge bed 7 may be higher than the feed end. One side of the discharge end of the discharge bed 7 is the medium ore discharge port 9; the other side is the tailings discharge port 8. The 8 side of the tailings outlet of the discharge bed 7 can be higher than the 9 side of the middle ore outlet; according to the nature of the minerals, the 9 side of the middle ore outlet of the discharge bed 7 can be higher than the tailings outlet 8 sides. When only two kinds of products need to be sorted out, the 8 sides of the tailings discharge port and the 9 sides of the middling ore discharge port can be at the same level, and the tailings discharge port 8 and the middling ore discharge port 9 are combined into one one.

The material of the gas distributor of the fluidized bed 1 and the discharge bed 4 may include a porous plate, and the upper layer may be made of a porous rubber plate with a high friction coefficient.

The application of above-mentioned dry sorting machine of the present invention, its preferred embodiment is, this dry sorting machine is used for mineral sorting, and the product after sorting can comprise concentrate, middle ore, tailings, Concentrate is the floating substance.

The dry separator can be used for coal separation, the concentrate is clean coal, the middle mine is medium coal, and the tailings are gangue.

The dry sorting device can also sort out two kinds of products or sort out more than three kinds of products.

The working principle of the specific embodiment of the present invention is described in detail below:

The dry sorting machine is composed of two parts: a fluidized bed sorting section and a sinking discharge section. After entering the separator, raw coal is first sorted in the fluidized bed sorting section. The bed surface is composed of a porous, high friction coefficient rubber bottom plate. The heavy product is conveyed by vibration instead of scraper, and the low-density material on the upper part of the bed is suspended in the upper part of the fluidized bed by the fluidized heavy medium, so the high friction effect given by the bottom plate cannot be obtained, while the material on the dial wheel The high-density material at the bottom of the bed is discharged through the discharge port of the baffle (that is, the sink discharge port 6) under the action of the inertial force generated by the friction force of the bottom plate and vibration. )discharge.

The high-density material separated by the fluidized bed enters the sediment discharge section. On the one hand, the setting of the sediment discharge section is to prevent a large amount of aggravated matter from leaking out, because the heavy product is continuously discharged from the bottom of the bed; on the other hand, it is also Re-selection can be carried out with the help of the separation principle of the wind shaker, so that one sorting machine can produce more than two kinds of coal products at the same time, while the dry sorting machine of the prior art can only produce two kinds of products.

The technical reliability of the dry separator of the present invention is high, and the vibration conveying of the high-density material at the bottom of the bed avoids the problem of partial blockage of the gas distributor caused by the original scraper conveying and extruding coal particles embedded in the pores;

The processing capacity per unit area is high. The feed of the sorter is fed from one end of the sorter, and the clean coal moves longitudinally along the sorter to the tail end. The longitudinal length of the sorter is equal to the length of the sorting area, thereby effectively improving Improve the utilization rate of the sorting area in the machine;

The large-scale sorting machine can be realized, and the processing capacity of the sorting machine can be expanded by widening the width of the sorting machine;

The transportation mode of light and heavy products is coordinated with the uniform and stable fluidization of the bed; the vibration transportation also makes it possible to separate the shallow groove fluidization, and the smaller the bed depth, the better the fluidization effect, while the fluidized bed of the prior art Because the sorter adopts the scraper discharge method, it must use a deep bed; in addition, the vibration energy is introduced into the ordinary fluidized bed, which strengthens the contact between gas and solid, and helps to improve the fluidization and sorting characteristics.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention.

Claims (10)

1, a kind of dry method cull eliminator comprises fluid bed, and described fluid bed is provided with gas distributor and feeder, it is characterized in that, an end of described fluid bed is provided with the raw ore inlet port; The other end is provided with floating thing outlet; One side of described fluid bed is provided with hypostasis and discharges section; Described fluid bed is provided with vibrating device.

2, dry method cull eliminator according to claim 1 is characterized in that, the top of described fluid bed is provided with the material toggling wheel.

3, dry method cull eliminator according to claim 2 is characterized in that, described material toggling wheel is near described floating thing outlet.

4, dry method cull eliminator according to claim 1 is characterized in that, described hypostasis is discharged section and comprised the discharge bed, and described discharge bed is provided with gas distributor and feeder, and described discharge bed is provided with vibrating device.

5, dry method cull eliminator according to claim 4 is characterized in that, the discharge end of described discharge bed is higher than feed end.

6, dry method cull eliminator according to claim 5 is characterized in that, a side of described discharge bed is provided with the chats discharging opening; Opposite side is provided with the mine tailing discharging opening.

7, dry method cull eliminator according to claim 6 is characterized in that, the mine tailing discharging oral-lateral of described discharge bed is higher than chats discharging oral-lateral or is in same level height.

8, according to claim 1 or 4 described dry method cull eliminators, it is characterized in that described gas distributor comprises porous plate, the top of described porous plate is provided with the expanded rubber plate.

9, a kind of application of each described dry method cull eliminator of claim 1 to 8 is characterized in that, this dry method cull eliminator is used for sorting mineral, and the product after the sorting comprises floating thing and hypostasis, and described floating thing is low-density concentrate.

10, the application of dry method cull eliminator according to claim 9 is characterized in that, this dry method cull eliminator is used for coal separation, and described concentrate is a cleaned coal; Described hypostasis is further elected as middle coal, spoil by branch.

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