JPH09196558A - Water removal method and water removal device for rocks - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To efficiently remove water from rocks to which slime adheres. A rock 12 is supplied onto a screen 13 of a water washing section 2 by a feeder 12. Screen 13
Then, the rocks 10 are vibrated and the washing water 17 is sprayed from the sprinkling shower 14 toward the rocks 10. As a result, slime (mud) containing a large amount of water attached to the rocks 10 is reliably removed. Then, the rocks 10 are sent to the centrifugal dehydrator 15 to remove water. According to this water removing device 1, since slime containing a large amount of water is removed in advance and then dehydrated, centrifugal dehydration can be sufficiently performed without using fire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water removing method and water removing apparatus for rocks suitable for dehydration of dry grinding raw materials such as stones and minerals, and more particularly to a water removing apparatus having a diameter of several tens. The present invention relates to a water removing method and a water removing apparatus suitable for applying to rocks such as stone materials and minerals having a size of about mm or less.

[0002]

2. Description of the Related Art Conventionally, when rocks such as stones and minerals are dry-crushed, the quarried raw material is crushed to, for example, about several tens of millimeters, and then the water content of the rocks is kept above a certain level. Removed by 0.5% to 1.0%
Need to be That is, if the amount of water adhering to rocks is large, there are problems such as water adhering to various parts of a dry crushing device such as a roller mill, causing rusting, or lowering crushing efficiency.

On the other hand, in the case of rocks to which slime (mud) has adhered, it is not possible to sufficiently remove slime containing a large amount of water with a centrifugal dehydrator or the like, so that the water content is 1.0 to 1.5. It can be removed only up to about%. Therefore, conventionally, it has been usual to dry rocks with a dryer or a hot-air drying furnace that uses heavy oil or waste heat.

[0004]

However, when a dryer or a hot-air drying furnace is used, there is a problem that the equipment becomes large in size and a large amount of fuel is required, resulting in an increase in cost. In addition, there is a problem that an observer must be provided because fire is used, and an exhaust treatment facility is required when using heavy oil.

Therefore, an object of the present invention is to solve the above problems, and to provide a water removing method and a water removing apparatus for rocks capable of efficiently removing the water of rocks to which slime adheres. Is.

[0006]

Means for Solving the Problems The above object of the present invention is to remove water from rocks to which slime has adhered. In the method of removing water, the rocks to which slime has adhered are washed with water and then adhered to the rocks. It can be achieved by a method for removing water from rocks, which is characterized by removing water contained therein.

In this method of removing water, since the slime containing a large amount of water is removed by washing with water and the rocks are dehydrated, the water in the rocks can be efficiently dehydrated. The above object of the present invention is to wash the rocks with water,
This can be achieved by a method for removing water from rocks, which comprises centrifugal dehydration to remove water adhering to the rocks.

In this method of removing water from rocks, since the slime containing a large amount of water is removed by washing with water and then dehydrated, the water can be sufficiently removed even by a centrifugal dehydrator.

The above-mentioned object of the present invention is to remove water from a water-washed portion, which is supplied with rocks by a feeder and is supplied with water to wash the rocks, and water which has been washed from the water-washed portion. It can be achieved by a water removing device for rocks, which has a water removing portion.

In this water removing device for rocks, slime containing a large amount of water adhering to rocks is removed in the water washing section, and then the water adhering to rocks is removed in the water removing section. It is possible to efficiently remove water of a kind.

Further, the above-mentioned object of the present invention is characterized in that the water removing section is adapted to place the rocks on the screen to vibrate the screen and sprinkle water from above the screen. It can be achieved by a water removal device for rocks. In this water removing device for rocks, the slime adhering to the rocks on the screen is sufficiently removed by the vibration of the screen and water spraying, so that subsequent dehydration becomes easy.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a method and apparatus for removing water from rocks according to the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of a water removing device 1 for rocks according to the present invention. As shown in the figure, in this rock water removing device 1, rocks 10 from which water is to be removed are stored in a raw material pocket 11, and rocks 10 discharged from the raw material pocket 11 are washed with a water washing section 2 Is supplied to. The water washing unit 2 includes a feeder 12, a screen 13, and a sprinkling shower 14.

Rocks 1 supplied from the raw material pocket 11
0 is the screen 1 by the feeder 12 of the washing section 2.
3 is transported. Vibration is appropriately applied to the screen 13. A sprinkler shower 14 is arranged above the screen 13, and the wash water 17 ejected from the sprinkler shower 14 is sprayed toward rocks on the screen 13.

As described above, in the water washing section 2, the rocks 10 adhered with slime (mud) containing a large amount of water are vibrated and the washing water 17 is sprinkled, so that the rocks 10 are evenly watered. You can call
In addition, it becomes possible to effectively remove the slime by rubbing the rocks 10 together, and the slime adhering to the rocks 10 is surely removed.

The rocks 10 having passed through the water washing section 2 are sent to a centrifugal dehydrator 15 which is a water removing section and dehydrated. At this time, the water adhering to the rocks 10 and the slime containing a large amount of water are also removed.
Water adhering to the can be sufficiently removed by centrifugal dehydration. The rocks 10 dehydrated by the centrifugal dehydrator 15 are sent to a crushing raw material pocket (not shown) by the screw conveyor 16. Water discharged from the screen 13,
The water removed from the rocks 10 by the centrifugal dehydrator 15 is sent to the drainage tank 17, from which the pump 18 is further added.
Sent to a wastewater treatment facility (not shown).

This water removing device 1 for rocks comprises a rock 1
The water-rich slime adhering to 0 is removed beforehand by the vibration of the screen 13 and the sprinkling shower 14.
It is then dehydrated. In other words, the water of the rocks 10 to be dehydrated can be efficiently removed by adopting a method of preliminarily washing the rocks 10 with water, which seems to have an opposite effect. It is possible to eliminate a lot of fuel and a lot of working time for drying by using fire in a drying furnace, and the water contained in the rocks 10 can be sufficiently removed only by the centrifugal dehydrator 15.

In the above embodiment, the centrifugal dehydrator 1
Although the case of dehydrating the rocks 10 in 5 has been described, the rocks 10 may be dehydrated by a dryer or a hot-air drying oven after removing the slime by washing with water. In this case, since it is possible to dry and dehydrate in a shorter time than in the conventional case, it becomes possible to reduce the fuel cost and the effect is remarkable.

[0018]

[Examples] Further, as shown in Table 1, the water content is 4.4%.
Measure the amount of water remaining when the limestone is washed with a centrifugal dehydrator without washing with water, and the amount of water remaining when the limestone under the same conditions is washed with the above water removing device 1 for rocks and then dehydrated did. The measurement results are shown in Table 2.

The first time of the practical sample of the present invention is
It is the residual water content when the particle size less than 3 mm is not collected,
The second time of the practical sample is the residual water content when the particles having a particle size of less than 3 mm are collected. The comparative sample obtained by centrifugal dehydration without washing with water is the residual water content when the particle size of less than 3 mm is not collected.

[0020]

[Table 1]

[0021]

[Table 2]

As can be seen from Table 2, when the product was centrifugally dehydrated without washing with water, the residual water content was 1.71%, and although it could not be sent to the dry pulverizer as it was, it was washed with water and then centrifugally dehydrated. In this case, the first time is 0.
69%, 0.76% for the second time (particle size less than 3 mm is also recovered)
And the water content required by the dry pulverizer is 0.5 to 1.
I was able to keep it within 0%.

[0023]

As described above, according to the method for removing water from rocks of the present invention, the water attached to the rocks is removed after the rocks to which the slime containing a large amount of water is attached are removed by washing with water. Since water is removed, the water content of rocks can be efficiently dehydrated. Further, according to the method for removing water from rocks of the present invention, after the rocks are washed with water, centrifugal dehydration is performed to remove the water adhering to the rocks, so that water can be sufficiently removed even by centrifugal dehydration. Therefore, it is not necessary to use fire, and equipment costs and fuel costs can be reduced.

Further, according to the water removing device for rocks of the present invention, the rocks are supplied by the feeder of the washing section,
In addition, water is supplied to wash the rocks, and after removing slime containing a large amount of water, the water of the rocks that have been washed in water is removed in the water removal unit, so the water of the rocks should be removed efficiently. You can Further, in the water removing device for rocks according to the present invention, the slime adhering to the rocks on the screen is effectively and surely removed by vibration and water sprinkling, so that subsequent dehydration becomes extremely easy.

[Brief description of drawings]

FIG. 1 is a schematic view of a water removing device for rocks according to the present invention.

[Explanation of symbols]

 1 Water removal device for rocks 2 Water washing section 10 Rocks 12 Feeder 13 Screen 14 Sprinkling shower 15 Centrifugal dehydrator

Claims (4)

[Claims] 1. A water removal method for removing water from rocks to which slime adheres, characterized in that water adhered to the rocks is removed after washing the rocks to which slime adheres. Method for removing water from various kinds of materials. 2. The method for removing water from rocks according to claim 1, wherein after the rocks are washed with water, centrifugal water is removed when removing water adhering to the rocks. 3. A water washing unit for supplying rocks by a feeder and for supplying water to wash the rocks, and a water removing unit for removing water from the water washed rocks supplied from the water washing unit. An apparatus for removing water from rocks, which comprises: 4. The water removing section places the rocks on a screen to vibrate the screen,
The water removing device for rocks according to claim 3, wherein water is sprinkled from above the screen toward the rocks.