JPH07236896A - Modification of broken stone washing sludge - Google Patents
Modification of broken stone washing sludgeInfo
- Publication number
- JPH07236896A JPH07236896A JP5459894A JP5459894A JPH07236896A JP H07236896 A JPH07236896 A JP H07236896A JP 5459894 A JP5459894 A JP 5459894A JP 5459894 A JP5459894 A JP 5459894A JP H07236896 A JPH07236896 A JP H07236896A
- Authority
- JP
- Japan
- Prior art keywords
- crushed stone
- cement
- sludge
- broken stone
- cleaning sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 47
- 239000004575 stone Substances 0.000 title claims abstract description 46
- 238000005406 washing Methods 0.000 title abstract description 4
- 238000012986 modification Methods 0.000 title description 2
- 230000004048 modification Effects 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 40
- 239000004568 cement Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000000428 dust Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 20
- 238000005469 granulation Methods 0.000 claims description 16
- 230000003179 granulation Effects 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 7
- 238000002407 reforming Methods 0.000 claims description 7
- 230000002950 deficient Effects 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 6
- 239000002657 fibrous material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 238000010169 landfilling Methods 0.000 abstract 1
- 239000011369 resultant mixture Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は山砕石等からコンクリー
ト骨材を生産する場合に発生する砕石洗浄スラッジの改
質方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reforming crushed stone cleaning sludge generated when producing concrete aggregate from crushed stone or the like.
【０００２】[0002]
【従来の技術】山砕石等からコンクリート用骨材を生産
する場合には、一般に砕石等を水にて洗浄して泥分や微
粉を除去して使用する。特に細骨材（砕砂）は、水洗し
て微粒子を極力分級して使用している。こうした洗浄水
に含まれるスラッジは、沈澱させ脱水後に処分するか、
フィルタープレス等により機械的強制脱水してケーキ状
にして処分されている。2. Description of the Related Art When producing aggregate for concrete from crushed stone, etc., generally, crushed stone is washed with water to remove mud and fine powder before use. In particular, fine aggregate (crushed sand) is washed with water and fine particles are classified as much as possible before use. The sludge contained in these wash waters should be allowed to settle and then dehydrated before disposal.
It is mechanically dehydrated by a filter press or the like to be caked for disposal.
【０００３】この種のスラッジは、一般に採石量の８〜
１５％にも達する。そこで処分としては安定した表土と
混入させたり、あるいは表土と互層に埋立廃棄処理した
りしている。しかし、砕石砕砂生産においては大量にス
ラッジが発生し、環境対策を含めて安定的な有効利用が
強く求められている。なお、従来技術としては、例えば
特開平２−１３７７５０号に示されるように、砕石，砕
砂へ一部分混入して使用するものである。This type of sludge generally has a quarry volume of 8 to 10.
It reaches 15%. Therefore, for disposal, it is mixed with stable topsoil, or landfill disposal is performed alternately with topsoil. However, a large amount of sludge is generated in crushed stone crushed sand production, and stable and effective utilization is strongly required including environmental measures. As a conventional technique, for example, as shown in JP-A-2-137750, crushed stone or crushed sand is partially mixed and used.
【０００４】[0004]
【発明が解決しようとする課題】上記従来技術によれ
ば、含水分の多いスラッジにセメント粉末をどのように
して入れるか、あるいは１００ｋｇｆ／ｃｍ2 以上の高
圧にて加圧成型時にどのようにして水分除去をするのか
等の未解決部分を残している。本発明は上記事情に鑑み
てなされたものであり、環境対策を含めて安定的な有効
利用が可能で、かつ連続的に大容量処理の可能な砕石洗
浄スラッジの改質方法を提供することを目的としてい
る。According to the above-mentioned prior art, how to put the cement powder into the sludge containing a lot of water, or how to press-mold at a high pressure of 100 kgf / cm 2 or more. There is an unsolved part such as whether to remove water. The present invention has been made in view of the above circumstances, and it is possible to provide a method of reforming crushed stone sludge that can be stably and effectively utilized including environmental measures, and that can continuously process a large capacity. Has an aim.
【０００５】[0005]
【課題を解決するための手段】本発明の［請求項１］に
係る砕石洗浄スラッジの改質方法は、砕石生産時におけ
る含水分１５〜３５％の洗浄スラッジに対して、重量比
で３〜６％のセメント又はセメント系固化材と砕石集塵
粉とを予め混合して、これらをロッド式混練機にて混練
し、更にその入口に砕石集塵粉を散布したドラム式造粒
機により造粒し、その後養生するようにした。The method for reforming crushed stone cleaning sludge according to [Claim 1] of the present invention is 3 to 3 by weight ratio with respect to the washed sludge having a moisture content of 15 to 35% during crushed stone production. 6% of cement or cement-based solidifying material and crushed stone dust powder are mixed in advance, and these are kneaded by a rod-type kneader, and further granulated by a drum-type granulator in which crushed stone dust powder is sprinkled at its inlet. Granulated and then allowed to cure.
【０００６】本発明の［請求項２］に係る砕石洗浄スラ
ッジの改質方法は、砕石生産時における含水分１５〜３
５％の洗浄スラッジに対して、重量比で７〜１３％のセ
メント又はセメント系固化材と砕石集塵粉とを予め混合
して、これらをロッド式混練機にて混練し、更にその入
口に砕石集塵粉を散布した回転する一対のローラ間に強
制的に押し込んで造粒し、その後養生するようにした。The method for modifying crushed stone cleaning sludge according to [Claim 2] of the present invention provides a moisture content of 15 to 3 during crushed stone production.
Cement or cement-based solidifying material in a weight ratio of 7 to 13% with respect to 5% of cleaning sludge and crushed stone dust powder are mixed in advance, and these are kneaded by a rod-type kneader, and further at its inlet. The crushed stone dust was forcibly pressed between a pair of rotating rollers, which were sprinkled, to granulate, and then cured.
【０００７】本発明の［請求項３］に係る砕石洗浄スラ
ッジの改質方法は、［請求項２］において、セメント等
の粉体には、重量比で３％以下の繊維物を予め混入して
おくようにした。The method for modifying crushed stone cleaning sludge according to [Claim 3] of the present invention is the same as that in [Claim 2] in which powder such as cement is mixed in advance with 3% or less by weight of fibrous material. I kept it.
【０００８】本発明の［請求項４］に係る砕石洗浄スラ
ッジの改質方法は、［請求項２］の回転する一対のロー
ラの、ローラ形状は円周方向に溝を有し、ローラ間を強
制的に押し込み通過とすることにより帯状に排出され
る。これを排出下部の回転カッタにて切断し成型造粒
し、その後に養生することにした。The method for modifying crushed stone cleaning sludge according to [Claim 4] of the present invention is directed to a pair of rotating rollers according to [Claim 2]. It is ejected in the form of a band by forcibly pushing it through. This was cut with a rotary cutter at the lower part of the discharge, molded and granulated, and then cured.
【０００９】本発明の［請求項５］に係る砕石洗浄スラ
ッジの改質方法は、［請求項２］〜［請求項４］におい
て、造粒品は成型造粒後に篩により粒度調整し、造粒不
良品及び小片を除去し、除去材は造粒工程へ戻して再造
粒するようにした。The method for modifying crushed stone cleaning sludge according to [Claim 5] of the present invention is the same as in [Claim 2] to [Claim 4]. Defective particles and small pieces were removed, and the removed material was returned to the granulation step and re-granulated.
【００１０】[0010]
【作用】本発明の［請求項１］に係る砕石洗浄スラッジ
の改質方法は、スラッジが水にて溶解せず造粒を保ち、
主に埋立材や裏込め材として利用でき、植樹や低層建物
等に支障のない程度に改質できた。The method for modifying crushed stone cleaning sludge according to [Claim 1] of the present invention, the sludge is not dissolved in water and keeps granulation,
It was mainly used as landfill material and backfill material, and could be modified to such an extent that it does not hinder tree planting and low-rise buildings.
【００１１】本発明の［請求項２］，［請求項３］に係
る砕石洗浄スラッジの改質方法は、路床盤材や埋戻し材
として適当な程度に改質できた。The method for modifying crushed stone cleaning sludge according to [Claims 2] and [Claim 3] of the present invention was able to modify to a suitable degree as a roadbed material or backfill material.
【００１２】本発明の［請求項４］に係る造粒方式は、
楕円形の半円溝が合さった状態になるので、米状に成型
された製品が得られる。The granulation method according to [claim 4] of the present invention is
Since the elliptical semicircular groove is put together, a rice-shaped product can be obtained.
【００１３】本発明の［請求項５］に係る砕石洗浄スラ
ッジん改質方法は、不良品が除去されて造粒工程へ戻さ
れる。したがって粒度調整された製品が得られる。In the crushed stone cleaning sludge reforming method according to [Claim 5] of the present invention, defective products are removed and returned to the granulating step. Therefore, a product with a controlled particle size is obtained.
【００１４】[0014]
【実施例】以下図面を参照して実施例を説明するが、基
本的な考え方としては、高含水の砕石洗浄スラッジにセ
メント等を均一的に混入して用途に応じて改質し、有効
利用を図るものである。本発明の［請求項１］に係る砕
石洗浄スラッジの改質方法の実施例を説明する。図１は
［請求項１］に係る実施例図であり、この場合は埋立材
あるいは裏込め材として用いる場合を示し、スラッジの
含水分を１５〜３５％として使用するものである。先
ず、スラッジの脱水を行なうが、一般的には中圧（ポン
プ押込圧力１０ｋｇｆ／ｃｍ2 〜３０ｋｇｆ／ｃｍ2 ）
押込みのフィルタープレス機を使用して低含水分とす
る。[Examples] Examples will be described below with reference to the drawings. The basic idea is to uniformly mix cement or the like with crushed stone cleaning sludge with high water content, modify it according to the application, and use it effectively. Is intended. An embodiment of the method for modifying crushed stone cleaning sludge according to [Claim 1] of the present invention will be described. FIG. 1 is an embodiment diagram according to [claim 1], in which case it is used as a landfill material or a backfill material, and the water content of the sludge is set to 15 to 35%. First, the sludge is dewatered, but generally at medium pressure (pumping pressure 10 kgf / cm 2 to 30 kgf / cm 2 ).
Use an indentation filter press to reduce the water content.
【００１５】図１において投入工程（Ａ）によりスラッ
ジケーキはホッパ１へ投入され、解砕後ベルトコンベア
２にて混練工程（Ｃ）のロッド式混練機３に移送され
る。この場合ベルトコンベア２の途中にある計重機４に
て移送量が計量され、その信号によって混合工程（Ｂ）
の固化材及び砕石集塵粉の量を決定して混合機５にて混
合される。そして、これがロッド式混練機３に移送され
て混練される。なお、微小の水分調整はセメント粉と共
に砕石製造時に発生する集塵粉の添加によって行なわれ
る。In FIG. 1, the sludge cake is thrown into the hopper 1 by the throwing step (A) and, after crushing, is transferred to the rod type kneading machine 3 of the kneading step (C) by the belt conveyor 2. In this case, the transfer amount is weighed by the weigher 4 in the middle of the belt conveyor 2, and the mixing process (B) is performed by the signal.
The amounts of the solidifying material and the crushed stone dust collecting powder are determined and mixed by the mixer 5. Then, this is transferred to the rod type kneader 3 and kneaded. The fine water content adjustment is performed by adding dust collecting powder generated during the production of crushed stone together with cement powder.
【００１６】この場合、集塵粉（乾式，砕砂併用時は分
級した微粉）とセメント等の粉末を一定比率で予め混合
して使用し、少量添加するセメント粉の増量化を図り、
均一な分散性を高めるものとする。この場合、セメント
系固化材は重量比で６％以下、好ましくは３〜６％とす
る。次いで混練後の材料は造粒工程（Ｄ）のドラム式造
粒機６によって造粒する。なお、造粒径は２０〜１５ｍ
ｍとするが特定せず、大小混合粒とする。なお、造粒機
は今回はドラム式を用いたが、パン型でも可能である。In this case, dust collecting powder (dry type, fine powder classified when using crushed sand) and powder of cement or the like are mixed in advance at a fixed ratio and used to increase the amount of cement powder added in a small amount.
Uniform dispersibility should be enhanced. In this case, the cement-based solidifying material is 6% or less by weight, preferably 3 to 6%. Next, the kneaded material is granulated by the drum type granulator 6 in the granulation step (D). The particle size is 20-15m
m, but not specified, and large and small mixed grains. The drum type granulator was used this time, but a pan type is also possible.
【００１７】造粒後はコンベアにて養生工程（Ｅ）とな
るが、造粒後の養生はコンクリートの強度発現を十分に
行なわせると共に、用途に応じ経済性を加味して行な
う。本実施例のように埋立材あるいは裏込め材として使
用する場合は、造粒後１〜３日間屋内にて自然養生させ
る。After the granulation, the curing step (E) is carried out on the conveyor. The curing after the granulation is carried out while sufficiently exerting the strength of the concrete and considering the economy depending on the use. When it is used as a landfill material or a backfill material as in this example, it is naturally cured indoors for 1 to 3 days after granulation.
【００１８】造粒時の粒径調整及び割れ防止対策として
は、本実施例の場合、円筒ドラムの転動による造粒であ
るため、造粒機の入口へ集塵補集粉を少量散布し水分調
整して粒径の大きさ調整をする。なお、含水分が多いと
粒径は大きくなり、少ないと粒径は小さいものとなる。
本実施例によれば埋立材や宅地造成材裏込め材料として
利用でき、植樹や低層建物等、建築に支障のない程度に
スラッジを改質できる。As a particle size adjustment and a crack prevention measure at the time of granulation, in this embodiment, since the granulation is performed by rolling of the cylindrical drum, a small amount of dust collecting and collecting powder is sprinkled at the inlet of the granulator. Adjust the water content to adjust the particle size. If the water content is large, the particle size becomes large, and if the water content is small, the particle size becomes small.
According to this example, it can be used as a backfill material for landfill materials and residential land reclamation materials, and sludge can be modified to such an extent that it does not hinder construction such as tree planting and low-rise buildings.
【００１９】本発明の［請求項２］に係る砕石洗浄スラ
ッジの改質方法の実施例を以下に説明する。図２は［請
求項２］に係る実施例図であり、この場合は主に路床盤
材又は埋戻し材として用いる場合を示し、スラッジの含
水分を１５〜３５％として使用するものである。なお、
スラッジの脱水は図１に示す［請求項１］の場合と同様
である。An embodiment of the method for modifying crushed stone cleaning sludge according to [Claim 2] of the present invention will be described below. FIG. 2 is an embodiment diagram according to [claim 2]. In this case, it is mainly used as a roadbed material or backfill material, and the water content of sludge is used as 15 to 35%. . In addition,
Dewatering of the sludge is the same as in the case of [claim 1] shown in FIG.
【００２０】図２において図１と同一部分については同
一符号を付して説明を省略する。本実施例で図１と異な
る部分は、混合工程（Ｂ）においてセメント系固化材の
重量比を７〜１３％にすると共に、砕石集塵粉を用いる
ようにした点及び造粒工程（一点鎖線で囲まれた部
分）、更に養生条件を変えた点である。In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the difference from FIG. 1 lies in that the weight ratio of the cement-based solidifying material in the mixing step (B) is set to 7 to 13%, and crushed stone dust is used and the granulation step (dashed line). The part surrounded by) is the point that the curing conditions are changed.
【００２１】したがって作用において、ロッド式混練機
３で混練後は押込みスクリュー７にて強制的に溝付き加
圧ローラ９を経由させ帯状に成型しカッティングして造
粒する。なお、加圧ローラは円周方向に数条の溝を有
し、この溝は楕円形の半円溝となっている。又、造粒後
は振動篩機８にて粒度調整し、不良品は不良品戻しコン
ベアにて再度溝付き加圧ローラ９へ戻す。その他の良い
製品はコンベアにて養生工程（Ｅ）に入る。この部分が
［請求項４］である。この場合、造粒後屋内で１晩（１
２時間）製品上へ防水シートにより覆い、内部へは低圧
蒸気を送って養生させ、更に養生後は更に５日間自然養
生させる（但し、寒冷時は３日間屋内養生）。Therefore, in operation, after kneading by the rod-type kneading machine 3, the squeezing screw 7 forcibly passes through the grooved pressure roller 9 to form a band shape and cutting to granulate. The pressure roller has several grooves in the circumferential direction, and the grooves are elliptical semicircular grooves. After granulation, the grain size is adjusted by the vibrating screener 8, and the defective product is returned to the grooved pressure roller 9 again by the defective product return conveyor. Other good products enter the curing process (E) on the conveyor. This part is [claim 4]. In this case, one night (1
(2 hours) Cover the product with a waterproof sheet, send low pressure steam to the interior for curing, and after curing, allow it to be naturally cured for another 5 days (however, when it is cold, it is cured for 3 days indoors).
【００２２】造粒時の粒径調整及び割れ防止対策 本実施例の場合、使用目的が路床盤材や埋戻し材である
ため、締め固めを要する上に所定の粒度分布を必要とす
る。そのため造粒に際しては溝付きローラの溝サイズを
大小組合せて行なうが、一対のローラが回転する時のロ
ーラへの付着力により中心部分より分割される現象が生
ずる。これは造粒物の付着力よりローラ表面への付着力
が大きいためである。Grain size adjustment during granulation and measures to prevent cracking In the case of this embodiment, since the purpose of use is a roadbed material or backfill material, compaction is required and a predetermined particle size distribution is required. Therefore, when granulating, the groove sizes of the grooved rollers are combined in a large and small manner, but when a pair of rollers rotate, a phenomenon occurs in which the rollers are divided from the central portion due to the adhesion to the rollers. This is because the adhesive force on the roller surface is greater than the adhesive force of the granules.
【００２３】そこで造粒物中へ短い繊維物を混入し、内
部付着力を増大させると共に、造粒物の強度アップを図
ることにより、成型物の割れは解消する。これが［請求
項３］である。なお、短繊維材の混入方法は、セメント
等の粉体物と予め混合しておいてスラッジと混練するも
のとする。又、成型造粒物の割れ又は端材片は、製品の
強度に悪影響を及ぼすものであり除去する必要がある。
造粒直後の養生コンベア出口に振動篩機を設置し、微振
動の網により小片は取り除き、造粒機入口へ戻し再造粒
化させることにより、不良材の発生を抑える方式とす
る。本実施例によれば路床盤材あるいは埋戻し材として
使用するのに十分な強度のスラッジ改質材料が得られ
る。Therefore, by mixing a short fiber material into the granulated material to increase the internal adhesive force and to increase the strength of the granulated material, cracking of the molded product is eliminated. This is [claim 3]. The short fiber material is mixed in advance with a powder material such as cement and then kneaded with the sludge. Moreover, cracks or scraps of the molded granules adversely affect the strength of the product and must be removed.
A vibrating screener is installed at the exit of the curing conveyor immediately after granulation, small pieces are removed by a net of slight vibration, and returned to the inlet of the granulator and re-granulated to suppress the generation of defective materials. According to this example, a sludge modifying material having sufficient strength to be used as a roadbed material or a backfill material can be obtained.
【００２４】上記各実施例にみられるように、スラッジ
の改質には少量のセメント又はセメント系固化材を均一
的に混合混練することが安定した品質を確保するために
必要であり、フィルターケーキの如く粉体との混合性の
悪いものには、鋼製のロッドを円筒内に充填し回転させ
るロッドによる混練機を使用する。こうすることによ
り、セメント材は使用量が少なくてもスラッジケーキに
均一的に混練され改質効果があがる。砕石洗浄による発
生スラッジは採石山の開発当初を除き、有機性の不純物
は少量（１０％以下）で大部分は砕石粉末であり、スラ
ッジの改質は発生状態のままで使えばよく（加熱又は焼
成，殺菌等は行なわない）、低コストな製造方法であ
る。各種混合機による性能比較によりロッド式混練機を
用いることにした。As seen in each of the above-mentioned examples, it is necessary to uniformly mix and knead a small amount of cement or cement-based solidifying material in order to improve the sludge in order to ensure stable quality. For the one having poor mixing property with the powder as described above, a kneader with a rod made of a steel rod filled in a cylinder and rotated is used. By doing so, the cement material can be uniformly kneaded into the sludge cake even if the amount used is small, and the effect of reforming can be improved. The sludge generated by crushed stone cleaning has a small amount of organic impurities (10% or less) and most of it is crushed stone powder except when the quarry mountain was first developed. It is a low-cost manufacturing method without firing or sterilization). We decided to use a rod-type kneader by comparing the performance of various mixers.
【００２５】次に、土質選定基準を第１表に示し、本発
明によるものを第２表に示す。なお、表に示す第１種土
質材料とは河川堤防用を除いた全てに適用できるもので
あり、第２種土質材料とは埋戻し以外の全て、更に第３
種土質材料とは埋戻し及び路床以外の全てに採用できる
ものである。なお、第３表は各土質材料の適用性の目安
を示す。Next, soil selection criteria are shown in Table 1, and those according to the present invention are shown in Table 2. In addition, the 1st type soil material shown in the table is applicable to all except for river levees, and the 2nd type soil material is all except for backfilling, and the 3rd type.
Seed soil material can be used for all except backfill and subgrade. Table 3 shows the applicability of each soil material.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【表２】 [Table 2]
【００２８】[0028]
【表３】 [Table 3]
【００２９】[0029]
【発明の効果】以上説明したように、本発明によれば高
含水の砕石洗浄スラッジにセメント等を所定量添加して
均一に混入し、混練して改質するようにしたので、用途
に応じた適用範囲に拡大でき、無駄なく経済性の高い資
源の回収が可能である。As described above, according to the present invention, a predetermined amount of cement or the like is added to the crushed stone washing sludge having a high water content so that the sludge is uniformly mixed and kneaded for modification. It is possible to expand the scope of application and to recover highly economical resources without waste.
【図１】本発明の［請求項１］に係る砕石洗浄スラッジ
の改質方法を示す実施例図。FIG. 1 is an embodiment diagram showing a method for modifying crushed stone cleaning sludge according to [Claim 1] of the present invention.
【図２】本発明の［請求項２］，［請求項３］，［請求
項４］，［請求項５］に係る砕石洗浄スラッジの改質方
法を示す実施例図。FIG. 2 is an embodiment diagram showing a method for modifying crushed stone cleaning sludge according to [Claim 2], [Claim 3], [Claim 4] and [Claim 5] of the present invention.
Ａ 投入工程 Ｂ 混合工程 Ｃ，Ｃ−１ 混練工程 Ｄ，Ｄ−１ 造粒工程 １ ホッパ ２ ベルトコンベア ３ ロッド式混練機 ４ 計重機 ５ 混合機 ６ ドラム式造粒機 ７ 押込みスクリュー ８ 振動篩機 ９ 溝付き加圧ローラ A charging step B mixing step C, C-1 kneading step D, D-1 granulating step 1 hopper 2 belt conveyor 3 rod type kneader 4 weigher 5 mixer 6 drum type granulator 7 indenting screw 8 vibrating screener 9 Groove pressure roller
フロントページの続き (72)発明者 高野 武三 埼玉県熊谷市月見町２−１−１ 秩父セメ ント株式会社中央研究所内 (72)発明者 新井 充明 埼玉県大里郡川本町大字田中328番地 有 恒鉱業株式会社内Front page continued (72) Inventor Takezo Takano 2-1-1 Tsukimi-cho, Kumagaya-shi, Saitama Central Research Institute, Chichibu Sentence Co., Ltd. (72) Inventor Mitsuaki Arai 328, Tanaka, Kawamoto-cho, Osato-gun, Saitama Heng Kong Mining Co., Ltd.
Claims (5)
の洗浄スラッジに対して、重量比で３〜６％のセメント
又はセメント系固化材と砕石集塵粉とを予め混合して、
これらをロッド式混練機にて混練し、更にその入口に砕
石集塵粉を散布したドラム式造粒機により造粒し、その
後養生するようにしたことを特徴とする砕石洗浄スラッ
ジの改質方法。1. Moisture content in crushed stone production 15-35%
3 to 6% by weight of cement or cement-based solidifying material and crushed stone dust powder are mixed in advance with the cleaning sludge of
A method for reforming crushed stone cleaning sludge characterized by kneading these with a rod type kneader, further granulating with a drum type granulator in which dust collected by crushed stones is sprayed at the entrance, and then curing. .
の洗浄スラッジに対して、重量比で７〜１３％のセメン
ト又はセメント系固化材と砕石集塵粉とを予め混合し
て、これらをロッド式混練機にて混練し、更にその入口
に砕石集塵粉を散布した回転する一対のローラ間に強制
的に押し込んで造粒し、その後養生するようにしたこと
を特徴とする砕石洗浄スラッジの改質方法。2. A water content of 15 to 35% during crushed stone production.
7 to 13% by weight of the cement or cement-based solidifying material and the crushed stone dust collecting powder are mixed in advance with the cleaning sludge of No. 1, and these are kneaded by a rod-type kneader, and further the crushed stone is collected at the inlet thereof. A method of reforming crushed stone cleaning sludge, characterized in that it is forcibly pressed between a pair of rotating rollers in which dust is sprinkled to granulate and then cure.
下の繊維物を予め混入しておくことを特徴とする請求項
２記載の砕石洗浄スラッジの改質方法。3. The method for modifying crushed stone cleaning sludge according to claim 2, wherein the powder of cement or the like is preliminarily mixed with a fiber material in an amount of 3% by weight or less.
条の溝を有し、溝は楕円形の半円溝として帯状に成型し
排出口にて短寸法に切断することを特徴とする請求項２
記載の砕石洗浄スラッジの改質方法。4. The pair of rotating rollers has several grooves in the circumferential direction, and the grooves are formed into a band shape as an elliptical semicircular groove and cut into a short dimension at an outlet. Claim 2
A method for modifying crushed stone cleaning sludge as described.
し、造粒不良品及び小片を除去し、除去材は造粒工程へ
戻して再造粒することを特徴とする請求項２又は請求項
３記載の砕石洗浄スラッジの改質方法。5. The granulated product is characterized in that after granulation, the particle size is adjusted with a sieve to remove defective granulation products and small pieces, and the removal material is returned to the granulation process and re-granulated. Alternatively, the method for modifying crushed stone cleaning sludge according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5459894A JP3654925B2 (en) | 1994-02-28 | 1994-02-28 | Method for modifying crushed stone sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5459894A JP3654925B2 (en) | 1994-02-28 | 1994-02-28 | Method for modifying crushed stone sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07236896A true JPH07236896A (en) | 1995-09-12 |
| JP3654925B2 JP3654925B2 (en) | 2005-06-02 |
Family
ID=12975178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5459894A Expired - Fee Related JP3654925B2 (en) | 1994-02-28 | 1994-02-28 | Method for modifying crushed stone sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3654925B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001122647A (en) * | 1999-08-19 | 2001-05-08 | Kobe Steel Ltd | Method for utilizing stone-crushing byproduct |
| KR100511523B1 (en) * | 2002-10-01 | 2005-08-31 | 한국건설기술연구원 | Manufacturing apparatus for backfilling material using stone dust in cake-state |
| JP2006021188A (en) * | 2004-06-11 | 2006-01-26 | Jdc Corp | Cohesive soil supply device and viscous soil reformer using the same |
-
1994
- 1994-02-28 JP JP5459894A patent/JP3654925B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001122647A (en) * | 1999-08-19 | 2001-05-08 | Kobe Steel Ltd | Method for utilizing stone-crushing byproduct |
| KR100511523B1 (en) * | 2002-10-01 | 2005-08-31 | 한국건설기술연구원 | Manufacturing apparatus for backfilling material using stone dust in cake-state |
| JP2006021188A (en) * | 2004-06-11 | 2006-01-26 | Jdc Corp | Cohesive soil supply device and viscous soil reformer using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3654925B2 (en) | 2005-06-02 |
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