JP2008178808A - Dry washing method for iron component with incineration ash - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dry washing method for an iron component with incineration ash enabling the dry washing due to the striking of a rotary chain using a chain striking type crushing and drying machine for washing the iron component recovered by a magnetic separator. <P>SOLUTION: In the chain striking type crushing and drying machine having a multistage type vertical cylindrical crushing chamber revolved at a high speed to crush a crushing target by the striking of a chain and a lower supply port equipped with a means capable of supplying hot air or air to the lower part of the crushing chamber as a revolving stream, the hard iron component to which incineration ash is adhered is charged while sucking the air from the lower supply port and struck by the rotary chain to discharge the incineration ash along the air while wiping off the incineration ash being an adherend and the iron component or the like high in specific gravity is discharged from below a crusher to recover the clean iron component. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dry cleaning method for iron with incinerated ash, which uses a chain hammering crusher to dry the iron with incinerated ash attached in a dry manner by striking the chain.

  The iron content in the incineration ash discharged from the conventional incineration plant is collected by a magnetic separator, and the ash containing harmful substances such as dioxin adhering to the iron content is washed with water, and only the iron content is discharged as scrap. It was disposed of. However, there is a problem that a water treatment facility is required for wet cleaning with water.

  In order to solve the above-mentioned problem, the present invention uses a chain blow type crushing dryer to wash the iron collected by a magnetic separator, and enables dry washing by blow of rotating chains. It was an issue to provide.

  In order to achieve the above object, the present invention has a vertical cylindrical crushing chamber for crushing an object to be crushed by hitting a multistage chain that is swung at a high speed, and at the bottom of the crushing chamber. In a chain blow type crushing and drying machine having a lower supply port equipped with means that can supply hot air or air as a swirl flow, while inhaling air from the lower intake port, the hard iron content with incinerated ash is introduced and rotated. The incineration ash is removed from the upper part of the incineration ash together with the air and the heavy iron is discharged from under the crushing machine while the incineration ash is blown off by the chain to be removed. A dry cleaning method for iron with incinerated ash was constructed.

  Here, as the main chain hitting type crusher, the crusher of Japanese Patent No. 3144728 is used, which is an object of crushing material to be crushed on the upper part of a crushing container having a vertical cylindrical steel plate peripheral wall. The inlet is provided with an outlet to take out the crushed objects at the lower and upper parts, and a rotating shaft that rotates at high speed around the axis is installed at the center of the crushing container. This is a crusher in which a plurality of striking chains that can be crushed and separated by hitting an object are divided into several equal parts in the horizontal direction and arranged in a radial state, and are attached in a multistage manner.

  According to the configuration of the present invention, air is sucked from the lower part of the crusher, and iron to which ash containing harmful substances such as dioxin as a treatment object is applied is hit, and the ash removed by the blow is aired. At the same time, a heavy iron content is discharged from the bottom by discharging it from the bottom, so that a clean iron content is recovered and can be processed as scrap without being washed with water.

  As described above, according to the configuration of the present invention, the ash adhering to the conventional iron content can be dry-cleaned without being wet-cleaned by water-washing, so that the water treatment facility for the wash water is not necessary.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show a chain striking crusher / dryer used in the present separation and recovery method. A drive unit main body 2 is mounted on a base 1 and a crushing container 3 is fixed thereon. A main shaft 4 is vertically arranged in the crushing container 3, and a chain mounting holder 5 is mounted on the main shaft, and the chain 6 can be easily mounted with a shackle or the like.

  The chain 6 spreads radially when the main shaft is rotated at a high speed, and strikes the iron adhering to the incinerated ash charged from the supply port 7 to remove the deposits. Also, when hitting iron, the chain will absorb the impact and there will be no damage to the machine. The iron from which deposits have been removed is discharged from the lower discharge port 8 because of its high specific gravity, and incineration ash with a low specific gravity is discharged from the upper discharge port 9 together with the air sucked from the air intake port 8 provided in the lower part of the container. Is done.

  The air supply port 8 is provided in the body tangent direction so that the air becomes a swirling flow, and the air and the object to be processed are mixed and contacted in the container to prevent blow-off from the central portion where the object to be processed is relatively small. Efficiently equipped. Thereby, the to-be-processed object is fully crushed and separated, and can be discharged.

  The supply port 7 for the object to be processed is provided at the upper part of the container in order to increase the number of chain hits in the crushing container, and the upper part of the supply port 7 is sucked by short-circuiting air from the supply port 7. In order to prevent this, the double damper 10 shuts off. By these, the to-be-processed object is wash | cleaned by a dry type, and isolation | separation with ash content is fully performed and it can collect | recover.

  On the other hand, as shown in FIG. 3, the ash discharged from the upper part of the chain blow type crusher / dryer 11 together with the air sucked from the air inlet 8 is repaired by the bag filter 12 and exhausted from the exhaust fan 13 as clean air. Is done.

  By the above, washing | cleaning of the iron content to which the incineration ash containing a harmful | toxic substance has adhered can be wash | cleaned by a dry type using a chain | strand-strike-type crushing dryer.

1 is a partially sectional elevational view illustrating one embodiment of the present invention. The partial cross section top view explaining the Example. BRIEF DESCRIPTION OF THE DRAWINGS The figure explaining the Example Example of this whole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Drive part main body 3 Crushing container main body 4 Spindle 5 Rotating chain attachment holder 6 Crush chain 7 Processed object supply port 8 Processed object lower discharge port, Air intake port 9 Processed object upper discharge port 10 Double damper 11 Chain impact Type crusher 12 Bag filter 13 Exhaust fan

Claims (1)

It has a vertical cylindrical crushing chamber that crushes the object to be crushed by hitting a multistage chain that is swirled at high speed, and a means that can supply hot air or air as a swirling flow to the lower part of the crushing chamber In a chain blow type crushing and drying machine with a lower supply port, while sucking air from the lower intake port, throw in hard iron with incineration ash and hit with a rotating chain to remove the incineration ash from the deposit. A method for dry cleaning of iron with incinerated ash, in which the incinerated ash is collected together with air from above and the iron with heavy specific gravity is discharged from under the crusher to recover clean iron.

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