JP2014188487A - Solid-liquid vibration liquefaction tank and operational method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably operate a solid-liquid vibration liquefaction tank while maintaining separation performance thereof.SOLUTION: A solid-liquid vibration liquefaction tank 3 in which a mixed layer of a solid medium (sand S1) and a liquid medium (water W2) is vibrated and liquified, a massive mixture M1 is made-up in the mixed layer, and the mixture is floated or settled by a specific gravity difference and selected. The tank 3 comprises extraction means for extracting the solid medium from the liquefaction tank, selection and removal means (sieve or screen) for selecting a solid medium having a particle diameter equal to or less than a predetermined value from the solid medium extracted by the extraction means and removing the solid medium, and makeup means for making-up a new solid medium, which has an amount equivalent to that of the solid medium removed by the selection and removal means, in the liquefaction tank. Stable operation of the liquefaction tank can be continued while preventing the solid medium in the liquefaction tank from change of a particle size thereof and maintaining good separation performance. The new solid medium, which has an amount equivalent to that of the extracted solid medium, may be made-up into the solid-liquid vibration liquefaction tank.

Description

  The present invention relates to a solid-liquid vibration liquefaction tank that performs specific gravity sorting, and a method for continuing its stable operation.

  Ore mined from the mine contains a lot of unnecessary minerals other than useful minerals, so they cannot be used as they are, and it is necessary to improve the quality of useful minerals by beneficiation work. In addition, since ores such as dolomite and quartzite have different uses depending on the content of main components, the utility value of the ore after sorting is increased by appropriate sorting.

  In recent years, industrial waste, household waste, and plastics such as polyethylene (PE), polypropylene (PP), and polystyrene (PS) have been recycled from the viewpoint of environmental conservation and effective use of resources. It is necessary to select metals and plastics for reuse.

  Therefore, Patent Document 1 discloses a cleaning device that cleans and removes the ore that is the input sample with water, and vibration that liquefies the mixed layer of sand that is a solid medium and water that is a liquid medium, and liquefies it. The liquefaction tank, the hydraulic cylinder that applies vibration to the vibration liquefaction tank, and a part of the liquefied mixed layer in the vibration liquefaction tank are extracted, and the foreign substances contained in the extracted mixed layer are removed, and then the vibration liquid There is described a foreign matter removing / moisture adjusting device that returns to the liquefaction tank and supplies sand and water to the vibration liquefaction tank.

  According to this, since the mixed layer of the solid medium and the liquid medium is used, it is possible to perform the sorting stably even when the object to be sorted is wet, and the drying cost required by the dry specific gravity sorting method becomes unnecessary. . In addition, since the mixed layer of the solid medium and liquid medium is liquefied by applying vibration, adjustment of the liquid inflow rate required by the wet specific gravity sorting method is unnecessary, and fluidization required by the wet specific gravity sorting method is unnecessary. Energy and operating costs required for the operation can be reduced.

JP 2011-136316 A

  However, in the method described in Patent Document 1, when the solid medium is worn and the original particle shape is lost as the sample is introduced and separated, a force acts in the direction of eliminating liquefaction and the separation performance is improved. It can be lost.

  Therefore, the present invention has been made in view of the above problems, and an object thereof is to stably operate a solid-liquid vibration liquefaction tank while maintaining good separation performance.

  In order to achieve the above object, the present invention is a solid-liquid vibration liquefaction tank, wherein a mixed layer of a solid medium and a liquid medium is vibrated to be liquefied, and a massive mixture is charged into the mixed layer. A solid-liquid vibration liquefaction tank for selecting the mixture by floating or settling according to the difference in specific gravity of the mixture, the extraction means for extracting a solid medium from the solid-liquid vibration liquefaction tank, and the solid extracted by the extraction means Sorting / removing means for selecting and removing a medium having a predetermined particle size or less among the medium, and charging for introducing a new solid medium in the same amount as the solid medium removed by the sorting / removing means into the solid-liquid vibration liquefaction tank Means.

  According to the present invention, a solid medium having a predetermined particle size or less is selected and removed, and a new solid medium having the same amount as the removed solid medium is charged. A stable operation of the solid-liquid vibration liquefaction tank can be continued while preventing a change in shape and maintaining good separation performance.

  In the solid-liquid vibration liquefaction tank, the sorting and removing means may include a sieve or a screen.

  The present invention is also a method for operating a solid-liquid vibration liquefaction tank, wherein a mixed layer of a solid medium and a liquid medium is vibrated to be liquefied, and a massive mixture is charged into the mixed layer. Part or all of the solid medium is withdrawn regularly or irregularly from a solid-liquid vibration liquefaction tank that selects by floating or settling the mixture according to the specific gravity difference, and a new solid medium having the same amount as the extracted solid medium is extracted. The solid-liquid vibration liquefaction tank is charged.

  Furthermore, the present invention is a method for operating a solid-liquid vibration liquefaction tank, wherein a mixed layer of a solid medium and a liquid medium is vibrated to be liquefied, and a massive mixture is charged into the mixed layer. Part or all of the solid medium is withdrawn regularly or irregularly from a solid-liquid vibration liquefaction tank that floats or settles the mixture according to the difference in specific gravity, and has a predetermined particle size or less. And a new solid medium of the same amount as the removed solid medium is put into the solid-liquid vibration liquefaction tank.

  According to the above inventions, it is possible to continue the stable operation of the solid-liquid vibration liquefaction tank while preventing the change in the particle shape of the solid medium in the solid-liquid vibration liquefaction tank and maintaining good separation performance. .

  As described above, according to the present invention, the solid-liquid vibration liquefaction tank can be stably operated while maintaining good separation performance.

It is the schematic which shows one Embodiment of the specific gravity sorting apparatus using the solid-liquid vibration liquefaction tank which concerns on this invention.

  Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the following description, the case where ores such as dolomite and silica stone are selected based on specific gravity according to the present invention will be described as an example.

  FIG. 1 shows a specific gravity sorting device using a vibrating liquefaction tank according to the present invention. This specific gravity sorting device 1 includes a washing device 2 for washing away powder P and the like from ore M1 such as dolomite, and after washing with water. A solid-liquid vibration liquefaction tank (hereinafter referred to as a “liquefaction tank”) 3 for selecting the ore M2, and a hydraulic cylinder 4 for vibrating the liquefaction tank 3 to liquefy the mixed layer in the liquefaction tank 3. 5 and an adjusting device 6 that adjusts the shape of the solid medium in the liquefaction tank 3.

  The cleaning apparatus 2 is provided for cleaning and removing the powder P adhering to the surface of the ore M1 as a sample with the water W1, and includes a rotating cylindrical mesh body, and the ore M1 passing therethrough is located above the ore M1. The surface of the ore M1 is washed by spraying water from

  The liquefaction tank 3 is formed in a box shape that opens upward, and is filled with sand S1 as a solid medium and water W2 as a liquid medium. The liquefaction tank 3 is made of a resin such as vinyl chloride or acrylic, or a material such as metal, and the size thereof is appropriately determined depending on the size and amount of the ore M1 to be introduced. In addition to the sand S1, glass beads, stainless steel, alumina, or the like can be used as the solid medium. In addition to water W2, ethanol, hydrocarbon, or the like can be used as the liquid medium.

  The hydraulic cylinders 4 and 5 are fixed to the side surface of the liquefaction tank 3, and are provided to apply vibration to the liquefaction tank 3 and liquefy the mixed layer of sand S 1 and water W 2 in the liquefaction tank 3. . By adjusting the virtual density of the mixed layer in the liquefaction tank based on the density of the sand S1, the ratio of the sand S1 and the water W2 (solid-liquid ratio), ore M2 in the mixed layer by the specific gravity of the input ore M1 The position of is changed in the vertical direction, so that the ore M2 can be selected with a specific target specific gravity. Note that vibration applying means other than the hydraulic cylinders 4 and 5 can be used, and in the small-scale specific gravity sorting apparatus 1, a motor or the like can be used.

  The medium shape adjusting device 6 extracts the sand S2 from the liquefaction tank 3, selects and removes the sand S2 having a predetermined particle size or less, and liquefies new sand S3 having the same amount as the removed sand. It is provided for charging into the chemical conversion tank 3, and a sieve having a predetermined particle size or less is selected using a sieve or a screen.

  Next, the operation of the specific gravity sorting apparatus 1 having the above configuration will be described with reference to FIG.

  First, the ore M1 is put into the cleaning device 2, and the powder P adhering to the surface of the ore M1 is removed by washing.

  The hydraulic cylinders 4 and 5 liquefy the mixed layer of sand S1 and water W2 in the liquefaction tank 3, and adjust the virtual density of the mixed layer in the liquefaction tank 3 based on the ratio of the sand S1 and water W2. Then, the washed ore M2 is charged into the liquefaction tank 3 via a charging device (not shown). Then, in the ore M2, the low specific gravity product L floats on or near the surface of the liquefaction tank 3, and the high specific gravity product H settles below the liquefaction tank 3, so these are separately separated into the liquefaction tank 3 Both can be sorted by discharging from

  If the liquefaction tank 3 is mixed with powder P or the like, particles having a diameter that is difficult to separate by specific gravity, or if the ore M2 is cracked, contamination occurs. Remove out of the system to remove contamination. Thereby, the change in the virtual density of the mixed layer caused by contamination can be suppressed to a small level, and the selection accuracy can be maintained high.

  Also, the quality of the selected low specific gravity product L or high specific gravity product H is determined. For example, when the content ratio of the main components of both does not fall within a desired range, and the desired quality is not achieved, Based on the deviation from the target value, the frequency or excitation strength of the vibration by the hydraulic cylinders 4 and 5 or the mixing ratio of the sand S1 and the water W2 is adjusted to maintain a desired quality.

  Further, the sand S2 is extracted from the liquefaction tank 3 by the medium shape adjusting device 6 regularly or irregularly, and the sand S2 having a predetermined particle size or less is removed by screening or screen sorting. The liquefaction tank 3 is replenished with the same amount of new sand S3 as the sand. Thereby, the stable operation of the liquefaction tank 3 can be continued while preventing the change in the particle shape of the solid medium in the liquefaction tank 3 and maintaining good separation performance. At this time, all the sand S1 may be taken out, or a part of the sand S1 may be taken out.

  Alternatively, part or all of the sand may be extracted from the liquefaction tank 3 regularly or irregularly, and new sand having the same amount as the extracted sand may be input to the liquefaction tank 3.

  In the above embodiment, ores such as dolomite and silica are selected based on specific gravity, but metals such as industrial waste and household waste, plastics, and the like can also be selected.

DESCRIPTION OF SYMBOLS 1 Specific gravity sorter 2 Cleaning apparatus 3 Liquefaction tank 4, 5 Hydraulic cylinder 6 Medium shape adjustment apparatus H High specific gravity product L Low specific gravity product M1, M2 Ore P Flour content S1-S3 Sand W1, W2 Water

Claims (4)

A solid-liquid vibration liquefaction tank in which a mixed layer of a solid medium and a liquid medium is liquefied by applying vibration, a massive mixture is charged into the mixed layer, and the mixture is floated or settled depending on a difference in specific gravity of the mixture. Because
Extraction means for extracting a solid medium from the solid-liquid vibration liquefaction tank;
Sorting and removing means for sorting and removing solid media having a predetermined particle size or less out of the solid medium extracted by the extracting means;
A solid-liquid vibration liquefaction tank comprising: a charging means for charging a new solid medium in the same amount as the solid medium removed by the sorting and removing means into the solid-liquid vibration liquefaction tank.   The solid-liquid vibration liquefaction tank according to claim 1, wherein the sorting and removing unit includes a sieve or a screen. A solid-liquid vibration liquefaction tank in which a mixed layer of a solid medium and a liquid medium is liquefied by applying vibration, a massive mixture is charged into the mixed layer, and the mixture is floated or settled depending on a difference in specific gravity of the mixture. A part or all of the solid medium is extracted regularly or irregularly from
A solid-liquid vibration liquefaction tank operating method, wherein a new solid medium in the same amount as the extracted solid medium is charged into the solid-liquid vibration liquefaction tank. A solid-liquid vibration liquefaction tank in which a mixed layer of a solid medium and a liquid medium is liquefied by applying vibration, a massive mixture is charged into the mixed layer, and the mixture is floated or settled depending on a difference in specific gravity of the mixture. A part or all of the solid medium is extracted regularly or irregularly from
Removing the extracted solid medium having a predetermined particle size or less;
A solid-liquid vibration liquefaction tank operating method, wherein a new solid medium in the same amount as the removed solid medium is charged into the solid-liquid vibration liquefaction tank.

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