JPS58150430A - Roll type treating apparatus - Google Patents

Abstract

PURPOSE:To enhance granulation strength and to attain to strengthen compression strength and to prevent pulverization, by a method wherein a solid substance supplied onto a roll rotated to a definite direction is contacted with an aerating medium while tumbled to promote various aerating treatments and granulation effect simultaneously. CONSTITUTION:Plural rotary rolls 5 are arranged between frames 3 provided to both sides of a box shaped main body A having a supply port 1 provided to the trailing end thereof and a discharge port 2 provided to the front end thereof in parallel at appropriate intervals so as to form a gradient falling toward the front part from the rear part of said frames 3 and a drive mechanism 7 driving each rotary rolls 5 to a direction moving a solid substance to be treated thereon forwardly is provided. In addition, supply ports 14 of an aerating medium are provided to both sides of a hopper 12 while the exhaust port 16 of the aerating medium is provided to a top panel 15 covering the upper part of the main body A to supply the aerating medium into the main body A. As the result, even a solid substance difficult in heat treating manipulation can be easily treated in such a state that inconveniences such as the breakage, the pulverization or the adhesion thereof are eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention involves forming naturally occurring lumps, granules, or granules into granules (hereinafter collectively referred to as solids) by drying, cooling, heating, This relates to a roll-type processing device that performs processes such as roasting, reaction, and thermal solidification.

To explain in more detail, the side length ratio, ie.

A spherical, cylindrical, plate-like, or irregularly shaped solid object with a minimum thickness to maximum length ratio of approximately 1:50, and whose minimum dimension is 2 m.
This is a device that processes particles with an average diameter of 2 to 500 wa using a fluid medium that uses gas, liquid, or a combination of gas and liquid.

Conventional solids processing equipment can be roughly divided into stationary type, stationary bed moving type, packed bed moving type, fluidized type (jet type), oscillating type, and transfer type, each of which is based on the properties and characteristics of the solids to be treated. They are used accordingly.

However, (a) tackiness increases during the processing process. (b) Its strength is reduced and it is easily crushed. (c) Severe surface powdering due to friction between solid objects. Solids with such properties cannot be treated satisfactorily with the conventional equipment described above.

The purpose of the present invention is to solve the problems of conventional processing equipment as described above, and to easily treat solid materials that are difficult to heat, such as those described in (a) to c) above, and to treat inconveniences such as destruction, powdering, and adhesion. The goal is to eliminate and treat them.

That is, the present invention arranges a large number of rotating rolls parallel to each other at appropriate intervals between frames on both sides of a box-shaped main body, and sloping downward from the rear to the front. A drive mechanism is provided to drive the solid material supplied from the supply port and placed on the rotating roll group to flow toward the front discharge port, and further to circulate the liquid medium as necessary within the box-shaped main body. The present invention provides a roll-type processing device having the following structure.

The details of this inventive device will be explained below based on the attached drawings.

In the figure, A is a box-shaped main body with a supply port 1 at the upper rear end.
, has a discharge port 2 at the front end, and slopes downward toward the front as shown in FIG.

Reference numeral 3 denotes left and right frames constituting both side walls of the main body A, and shafts at both ends of a large number of rotary rolls 5 are rotatably supported by a large number of bearings 4 fixed to the frame 3 at regular intervals.

As shown in FIG. 3, a sprocket 6 is fixed to the end of the shaft protruding from one end of the roll 5 at the front end, and the sprocket 6 is connected to the sprocket 8 at the end of the output shaft of a drive mechanism 7 composed of a motor, a speed reducer, etc. The transmission chain is linked by 9 cells.

Further, the end of the shaft at the other end of each roll 5 is interlocked by a sprocket 10 and a transmission chino 11, respectively, to rotate all the rolls 5 in the direction of the arrow in FIG.

Reference numeral 12 denotes a discharge hopper provided at the bottom of the main body A, and a discharge chute 13 is provided at the lower end of the discharge hopper.

Further, on both sides of this hopper 12, supply ports 14 for ventilation medium are provided.
A top plate 15 covering the upper part of the main body A is provided with an outlet 16 for ventilation medium.

The apparatus of the present invention has the above-mentioned configuration, in which solid materials such as columns and blocks are fed into the main body A from the supply port 1, and the drive mechanism 7
It moves on a rotating roll 5 which is driven in the direction of the arrow in Fig. 1, and is discharged.

It is discharged from mouth 2.

The solid material flows over the group of rolls 5 as described above, but in the case of drying treatment or various heat treatments, when hot air heated to a temperature appropriate for the purpose is blown from the supply port 14, this hot air flows between the rolls 5. The solids are dried or heated therethrough and flow to the upper discharge port 16.

Further, in the case of cooling, it is sufficient to supply cold air to the supply port 14, and in the case of reaction treatment, it is sufficient to supply a gas according to the purpose to the supply port 14.

FIG. 4 explains the state of the solid material placed on the roll 5. In this figure, the solid material at position fa) is moved to (b), (c), (d) by the rotation of roll 5.
It is transferred as follows. At this time, the solids above (a) move in the rotational direction of the roll 5 due to mutual friction between the solids.

(h) shows the thickness of the solid material, and the surface of this layer, that is, the solid material on the upper side, moves slightly later than the material in contact with the roll 5, but as shown in Figure 1, the entire device moves. By tilting it, the moving speed becomes uniform.

In addition, in the solid material layer, the solid material layer is slightly consolidated above the perpendicular line (2) passing through the center line of the rolls 5, that is, on the surface layer side, and is conversely relaxed above the perpendicular line (2) passing between the rolls 5.

For this reason, the moving solid material layer slightly transfers and slides between the solid materials, resulting in a burying force. Therefore, the solid matter in the compaction area slides into the relaxation area and is subjected to repeated action. In this way, since the solid objects slip slightly between each other, the solid objects do not stick to each other, and their movement is small, so that the solid objects do not break.

In addition, by increasing the rotation speed of the front roll 5 from 1.05 times to 1.2 times the rotation speed of the rear roll 5 (to be used depending on the type of solid material), solid material can be transferred and adhered by the sliding function. A further deterrent effect is obtained, and the transfer stirring function and sieving function are further increased.

In FIG. 4, a thick layer of solid matter is formed on the roll 5, but it may be formed as a thin layer so that the solid matter does not overlap on the roll 5, but overlaps.

Further, in the above embodiment, the aeration medium was made to flow below the group of rolls 5, and this medium passed between the rolls 5 and flowed upward. It is also possible to perform heat treatment by supplying a ventilation medium in opposite directions, and as shown in FIGS. 5 and 6, the roll 5 is made hollow and provided with a large number of ventilation holes 17 (not shown). It is also possible to supply the ventilation medium into the roll 5 via the rotary joint and to the solids through each ventilation hole 17, or a combination of these may be implemented, in which case the ventilation holes are eliminated and the inside of the roll 5 is In some cases, a liquid or gaseous high-temperature or low-temperature heat medium is passed through the roll 5, and in some cases, the outer diameter of the roll 5 is alternately formed with circular portions e and triangular portions f on the outside as shown in FIG.

Next, an experimental example in which solid matter was dried using the apparatus of the present invention will be shown.

Purpose of processing: Drying and sieving of phosphate rock granulated powder, processed material
: Phosphate rock pellets, moisture content approx. 14% (WB) after drying:
Surface moisture is removed to reduce the moisture content to approximately 8% (W-B) or less.

Processing view: hoTA Roll shape: Diameter 134m Length 1200m Roll pitch: 138m Gap between rolls = 4 Rotation speed: Tip o - / l / 34 ~ 3.4 r
/””Intermediate roll average 27-2.7rni.

Results: The above-mentioned values after drying were fully satisfied, and very good results were obtained.

In this invention, as described above, the solid material supplied on the rolls rotating in a constant direction contacts the aeration medium while rolling, so that the granulation effect is enhanced at the same time as various aeration treatments, and the granulation strength is increased. , the crushing strength is strengthened, the powdering prevention effect is enhanced, the yield of the product is high, and there is no deformation of the granulated products or caking or adhesion of the granulated products to each other. In addition, it is possible to discharge and remove adhering matter and dust mixed in with solids, as well as unnecessary small particle size products, out of the system. That is, in addition to various heat treatments, products and non-products can be sieved at the same time.

Therefore, there is an effect that the sieving process such as pre-treatment and post-treatment can be omitted.

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional plan view of the device of this invention, Fig. 2 is a partially longitudinal front view of the same as above, Fig. 3 is a partially cross-sectional plan view of the same, and Fig. 4 is a longitudinal side view illustrating the action of the roll. , 5 and 6 are enlarged vertical sectional side views showing other examples of the roll. 1... Supply port, 2... Discharge port, 3... Frame,
5... Rotating roll, 7... Drive mechanism, A... Box-shaped main body. Patent applicant Kurimoto Iron Works Co., Ltd.

Claims (1)

[Scope of Claims] 1. A large number of rotating rolls are arranged in parallel at appropriate intervals between the frames on both sides of a box-shaped main body with a supply port at the rear end and a discharge port at the front end, and descend from the rear to the front. Slope. In addition, a drive mechanism was provided to drive each rotating roll in a direction to move the solid material placed thereon forward, and a ventilation medium was also supplied into the box-shaped main body. Roll type processing equipment. 2. The roll processing apparatus according to claim 1, wherein a fluid medium for the purpose of heat transfer is made to flow through the rolls.