JP3624031B2 - Composite disintegration processing method and disintegration processing apparatus - Google Patents

Description

【００１７】
尚、比較として解砕処理装置における環状の凸部５の幅ｔを２０ｍｍ、高さｈを２０ｍｍの直角な矩形に形成する以外は、前記実施例と同一寸法、及び回転数で同じ石膏ボードを処理したところ、石膏ボードは前記凸部の幅で切断され、石膏は剥離せずボードの中心より２分して両側のパルプに付着した。
【００１８】
【発明の効果】
以上説明したように、この発明は、極めて簡単且つ容易に石膏ボードのような複合体を各材料ごとに分離し、回収物をリサイクル資源として有効に活用することができ、環境保全上からも大いに貢献するものである。
【図面の簡単な説明】
【図１】この発明の複合体の解砕処理装置を示す概略図である。
【図２】この発明の別の実施例を示す部分断面図である。
【符号の説明】
１ 解砕処理装置
２ ロール
３ ロール
４ 環状の凹部
４ａ外面
５ 環状の凸部
５ａ内底面
Ｓ 間隙
Ｔ 凹部の幅
ｔ 凸部の幅
Ｐ ピッチ
ｈ 凸部の高さ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composite crushing processing method and a crushing processing apparatus applied when a composite formed by integrally laminating a plurality of materials such as gypsum board is separated for each material.
[0002]
[Prior art]
In recent years, effective use of recycled resources has been promoted from the standpoint of environmental conservation, and there is a movement to reuse waste materials in gypsum boards. However, gypsum board is made of gypsum as a core, coated on both sides and sides with base paper for board, and formed into a plate shape. Gypsum or base paper for board is taken out from such a composite, and this is recycled. In order to use it, it is necessary to separate the gypsum and the base paper for board.
[0003]
Conventionally, in order to separate the gypsum and the base paper for board, the gypsum board waste material is crushed by a roll crusher, a screw crusher, a hammer crusher, etc., and then separated into each member by sieving.
[0004]
[Problems to be solved by the invention]
However, gypsum and board base paper differ in friability, and in the above-described method in which the same level of impact and the same type of force are applied to each member, many different materials are mixed into each crushed and separated member. That is, in the gypsum board, a large amount of pulp (board base paper) is mixed in the gypsum to be collected, and the separated pulp has a large gypsum adhesion. Accordingly, it is difficult to use a large amount of the recovered gypsum as a recycling resource. At present, the gypsum recovered by this method is only mixed and used in the virgin raw material at the time of gypsum board production. Moreover, the separated pulp has a large amount of gypsum attached and is difficult to reuse as a pulp raw material.
[0005]
Therefore, the present invention eliminates the above-mentioned drawbacks , separates and crushes gypsum board into board base paper and gypsum with an extremely simple configuration, and crushing treatment of gypsum board that can effectively use the recovered material as a recycling resource An object is to provide a method and a crushing treatment apparatus.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, according to the method for crushing a gypsum board of the present invention, a plurality of annular rolls in the circumferential direction of each roll surface of a pair of rolls that rotate reversely around a parallel axis. The concave and convex portions are alternately formed in the length direction, the outer surface of the convex portion is formed in a circular arc cross section, and the inner bottom surface of the concave portion is formed in a flat cross section, and the concave and convex portions of the rolls face each other. A gypsum board with gypsum as a core material and coated with board base paper is supplied between the rolled rolls, and the gypsum board is subjected to compression, tension, and shear stress to separate and crush into gypsum and board base paper. .
[0007]
Moreover, according to the crushing apparatus for gypsum board of the present invention, a plurality of annular recesses and projections in the circumferential direction of the surface of each roll of a pair of rolls rotating in opposite directions around a parallel axis are lengthened. alternately in the direction, and the outer surface of the convex portion arc-shaped cross section, is further formed an inner bottom surface of the recess in cross section flat, Ri Na are opposed to the concave-convex portion of each of said rolls is conflict with each other, the roll In the meantime, the gypsum board covered with board base paper with gypsum as a core is separated and crushed into gypsum and board base paper . Hereinafter, it demonstrates in detail based on drawing.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, a complex crushing treatment apparatus 1 according to the present invention includes a pair of parallel rolls 2 and 3 that rotate in opposite directions around an axis, and a plurality of rolls 2 and 3 that are coaxial with the rolls 2 and 3 on the circumferential surface. The annular concave portions 4 and convex portions 5 are mainly formed by alternately forming in the axial length direction. Although not shown, the driving device and the like are the same as those of the conventional double roll crusher, and the gap S between the concave portions 4 and the convex portions 5 between the rolls 2 and 3 can be adjusted as appropriate. Furthermore, either one of the rolls 2 and 3 is urged toward the other roll by a spring means, a hydraulic means or the like.
[0009]
In such a complex crushing treatment apparatus 1, the annular convex outer surface 5a is formed in a circular arc shape in cross section, and the inner bottom surface 4a of the concave portion 4 is formed in a flat cross sectional shape. The two concave portions 4 and the convex portions 5 are opposed to each other. The outer surface 5a of the convex portion 5 formed in a circular arc shape is circular in cross section, preferably in a semicircular shape in cross section, and more preferably in a semicircular shape in cross section formed with a radius approximately half the width t of the convex portion 5. Thus, compression, tension, and shear stress can be effectively applied to the composite to be crushed.
[0010]
In addition, the width t of the convex portion 5 is the same as or slightly smaller than the width T of the concave portion 4, that is, by forming the width t of the concave portion 4 to be about 1 to 1/2, Can be easily. Furthermore, the composite is a gypsum board to be described later, and when applied to the crushing treatment of the gypsum board, the width t of the convex portion 5 and the width T of the concave portion 4 are 10 to 40 mm, and the pitch P is 20 to 20 mm. It is preferable to set the height to 80 mm, and further, by setting the height h of the convex portion 5 to about 1 to 1/4 with respect to the width t, the gypsum board has the effect of the sectional shape of the convex portion 5 described above. Can be effectively separated into gypsum and pulp.
[0011]
Such concave portions 4 and convex portions 5 are formed by machining the surfaces of the cylindrical rolls 2 and 3, and semi-circular or circular rod-shaped members are wound around the cylindrical rolls 2 and 3 at a predetermined pitch. Thus, it can form by appropriate means, such as welding. In addition, the concave portion 4 formed in a flat cross section shown in FIG. 1 has the same shape as the outer surface 5a of the convex portion 5, that is, the concave portion 4 and the convex portion 5 are engaged with each other, as shown in FIG. It can also be formed in a cross-sectional arc shape.
[0012]
In the disintegration processing apparatus 1 for a composite according to the present invention described above, a composite, for example, a waste gypsum board cut or broken to an appropriate size, is rotated between two rolls 2 and 3 that are rotated in reverse by means such as a hopper (not shown). The waste gypsum board is subjected to compression, tension, and shear stress by the action of the outer surface 5a of the convex portion 5 and the inner bottom surface 4a of the concave portion 4 that are formed in an arcuate cross section that mesh with each other. Can be separated and disintegrated.
[0013]
In other words, gypsum board is a brittle material where gypsum, which is the inner core, is weak in compression, tension, and shear stress, whereas the pulp in the surface layer (base paper for board) is a composite that is relatively strong against these stresses. is there. Therefore, it is possible to effectively pulverize each member of these composites by applying the various stresses instead of applying a violent force such as an impact force.
[0014]
Next, the pulverized composite is subjected to a sieving treatment by a sieving means such as a vibration sieve (not shown), so that the separated members are very rarely mixed with different members, and a high purity single member can be recovered. . In addition, although the gypsum board was mainly demonstrated as a composite_body | complex, it can be effectively applied to various composites with different crushability, such as a plastic and a foaming base material.
[0015]
【Example】
On the surfaces of rolls 2 and 3 having a diameter of 400 mm and a length of 250 mm shown in FIG. 1, the width t of the annular projection 5 is 20 mm, the height h is 20 mm, and the outer surface 5a is formed in a semicircular shape with a radius of 10 mm. Moreover, the width T of the annular recess 4 was set to 30 mm to obtain the composite crushing treatment apparatus 1 of the present invention. Using this crushing treatment apparatus 1, while the rolls 2 and 3 are rotated in reverse at a speed of 90 rpm, gypsum boards having thicknesses of 12, 12, and 9 mm that have been divided into appropriate sizes are crushed and then vibrated. Pulp and gypsum were separated with a sieve, and the pulp content in gypsum and the gypsum adhesion amount of the separated pulp were determined. The results are shown in Table 1. The pulp content in the recovered gypsum was as extremely low as 0.1 to 0.4% by weight, and the recovery rate of gypsum was as high as 88 to 95% by weight. On the other hand, the separated pulp has little gypsum adhesion, can be reused as a pulp raw material, may be subjected to combustion treatment, and the combustion residue is small.
[0016]
[Table 1]

[0017]
As a comparison, the same gypsum board with the same dimensions and the same rotational speed as in the above example except that the width t of the annular projection 5 in the crushing treatment apparatus is 20 mm and the height h is 20 mm. As a result of the treatment, the gypsum board was cut with the width of the convex portion, and the gypsum did not peel off and adhered to the pulp on both sides in half from the center of the board.
[0018]
【The invention's effect】
As described above, the present invention can separate a composite such as gypsum board for each material very easily and easily, and can effectively use the recovered material as a recycling resource. It contributes.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a complex crushing treatment apparatus of the present invention.
FIG. 2 is a partial sectional view showing another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crushing processing apparatus 2 Roll 3 Roll 4 Ring-shaped recessed part 4a outer surface 5 Ring-shaped convex part 5a inner bottom face S Gap T Recessed width t Convex width P Pitch h Convex height

Claims (5)

In a pair of rolls rotating in reverse directions around a parallel axis, a plurality of annular concave portions and convex portions are alternately arranged in the length direction in the circumferential direction of each roll surface , and the outer surface of the convex portion is formed in a circular arc shape in cross section. further an inner bottom surface of the recess is formed in cross section flat, supplying gypsum board gypsum coated with a core board liner between rolls are opposed to the concave-convex portion of each of said rolls is conflict with each other, said plasterboard A method for pulverizing gypsum board , comprising compressing, pulling, and applying shearing stress to gypsum and board base paper separately . 2. The method for pulverizing gypsum board according to claim 1, wherein sieving is performed after pulverizing the gypsum board . A pair of rolls that rotate in opposite directions around a parallel axis, a plurality of annular recesses and projections in the circumferential direction of each roll surface alternately in the length direction, and the outer surface of the projections in an arc shape in cross section Further, the inner bottom surface of the concave portion is formed in a flat cross section, and the concave and convex portions of the rolls are opposed to face each other, and the gypsum board covered with the base paper with gypsum as a core material between the rolls A gypsum board crushing treatment apparatus characterized by separating and crushing into base paper. The width of the said convex part and a recessed part is 10-40 mm, and a pitch is 20-80 mm, The crushing processing apparatus of the gypsum board of Claim 3 characterized by the above-mentioned. 5. The gypsum board crushing treatment apparatus according to claim 3, wherein the width of the convex portion is 1 to 1/2 of the width of the concave portion.

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