JPWO2019163034A1 - Apparatus and method for treating coal ash product - Google Patents

Apparatus and method for treating coal ash product Download PDF

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JPWO2019163034A1
JPWO2019163034A1 JP2018524855A JP2018524855A JPWO2019163034A1 JP WO2019163034 A1 JPWO2019163034 A1 JP WO2019163034A1 JP 2018524855 A JP2018524855 A JP 2018524855A JP 2018524855 A JP2018524855 A JP 2018524855A JP WO2019163034 A1 JPWO2019163034 A1 JP WO2019163034A1
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coal ash
product
reference value
granulated
ash product
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JP6428967B1 (en
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太 今田
太 今田
明文 中下
明文 中下
池田　陵志
陵志 池田
健二 中本
健二 中本
渡辺　勝
渡辺　　勝
直 福本
直 福本
隆仁 及川
隆仁 及川
勝二 佃
勝二 佃
井上　智子
智子 井上
秀彰 野原
秀彰 野原
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Chugoku Electric Power Co Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/02—Controlling the operation of the mixing
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/10—Burned or pyrolised refuse
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

造粒物や造粒物結合体を含む石炭灰生成物の大きさを所定径以下とする石炭灰生成物の処理装置及び処理方法を提供する。本発明の石炭灰生成物の処理装置２００は、石炭灰を含む原料から造粒され、養生設備において養生された造粒物及び前記造粒物が複数結合した造粒物結合体を含む石炭灰生成物を、基準値より大きいものと前記基準値以下のものとで分級する一次分級機８０と、前記基準値より大きい石炭灰生成物を分解し、前記基準位置以下に分解された石炭生成物を前記一次分級機８０に戻す分解機９０と、を備える。前記分解機９０は、前記基準値より大きい前記石炭灰生成物を分解して、前記基準値の幅の隙間を通った石炭灰生成物のみを排出する。Provided are a treatment apparatus and a treatment method for a coal ash product, which makes a size of a coal ash product containing a granulated product or a granulated product combination a predetermined diameter or less. The coal ash product processing apparatus 200 of the present invention is a coal ash that is granulated from a raw material containing coal ash, and that includes a granulated product that has been cured in a curing facility and a granulated product combined body in which a plurality of the granulated products are combined. The product, a primary classifier 80 for classifying the product with a value larger than a reference value and a value less than the reference value, and a coal ash product larger than the reference value is decomposed, and a coal product decomposed below the reference position To the primary classifier 80. The decomposer 90 decomposes the coal ash product that is larger than the reference value, and discharges only the coal ash product that has passed through the gap having the reference value width.

Description

本発明は、石炭灰生成物の処理装置及び処理方法に関する。   The present invention relates to an apparatus and a method for treating a coal ash product.

粉末状の石炭灰は、粉じん対策として、専用のサイロに入れて貯蔵する必要がある。このため、従来、粉末状態から、これらの制約がかからない造粒物に加工する方法がとられている（特許文献１参照）。このような造粒物は、養生設備で所定期間養生された後、分級され、所定の範囲の粒径のものが製品として出荷される。   Powdered coal ash must be stored in a special silo as a measure against dust. For this reason, conventionally, a method of processing from a powder state to a granulated material free from these restrictions has been adopted (see Patent Document 1). Such a granulated product is cured for a predetermined period in a curing facility, then classified, and shipped as a product having a particle size within a predetermined range.

特開２００８−１１０８８８号公報JP 2008-110888 A

しかし、造粒工程においては、製品として出荷する規格より大きい規格外の造粒物が一定割合で造粒される。また、養生設備において、造粒物が結合して造粒物結合体となり、規格外の粒径になる場合もある。
本発明は、これらの造粒物や造粒物結合体を含む石炭灰生成物の大きさを所定径以下とする石炭灰生成物の処理装置及び処理方法を提供することを目的とする。However, in the granulation process, granules having a larger size than the standard to be shipped as a product are granulated at a constant rate. Further, in the curing equipment, the granules are combined to form a granule combined body, and the particle size may be out of the standard.
An object of the present invention is to provide an apparatus and a method for treating a coal ash product in which the size of the coal ash product containing these granules and the aggregate of granules is reduced to a predetermined diameter or less.

上記課題を解決するために、本発明は以下のものを提供する。
石炭灰を含む原料から造粒され、養生設備において養生された造粒物及び前記造粒物が複数結合した造粒物結合体を含む石炭灰生成物を、基準値より大きいものと前記基準値以下のものとで分級する一次分級機と、前記基準値より大きい石炭灰生成物を分解し、前記基準値以下に分解された石炭生成物を前記一次分級機に戻す分解機と、を備える、石炭灰生成物の処理装置。In order to solve the above problems, the present invention provides the following.
A coal ash product containing a granulated product obtained by granulating from a raw material containing coal ash and agglomerated in a curing facility and a granulated product combined with a plurality of the granulated products, and the reference value, A primary classifier for classifying with the following, and a decomposer for decomposing a coal ash product larger than the reference value and returning the coal product decomposed below the reference value to the primary classifier, Equipment for processing coal ash products.

前記分解機は、前記基準値より大きい前記石炭灰生成物を分解して、前記基準値の幅の隙間を通った石炭灰生成物のみを排出してもよい。   The decomposer may decompose the coal ash product larger than the reference value and discharge only the coal ash product that has passed through a gap having the width of the reference value.

前記分解機は、前記造粒物結合体を、個々の造粒物に分解してもよい。   The decomposer may decompose the aggregate of granules into individual granules.

前記分解機は、互いに平行に延びる２本の軸部と、それぞれの軸部から径方向外側に延びる複数の撹拌ブレード、とを備える分解部材を備えてもよい。   The decomposer may include a decomposing member including two shaft portions extending parallel to each other and a plurality of stirring blades extending radially outward from the respective shaft portions.

前記基準値以下の前記石炭灰生成物を分級する多段式二次分級機を備えてもよい。   A multi-stage secondary classifier for classifying the coal ash product having the reference value or less may be provided.

前記多段式二次分級機の最小径のふるいを通過した石炭灰生成物を、前記養生設備において養生される前の前記石炭灰生成物に付着させる付着装置を備えてもよい。   The coal ash product which passed through the minimum diameter sieve of the multistage type secondary classifier may be provided with an adhesion device which adheres to the coal ash product before being cured in the curing equipment.

また、本発明は、石炭灰を含む原料から造粒され、養生設備において養生された造粒物及び前記造粒物が複数結合した造粒物結合体を含む石炭灰生成物を、基準値より大きいものと前記基準値以下のものとで分級する一次分級ステップと、前記基準値より大きい石炭灰生成物を前記基準値以下に分解し、分解された石炭生成物を、再度、一次分級ステップに戻す分解ステップと、を含む石炭灰生成物の処理方法を提供する。   Further, the present invention is a granulated from a raw material containing coal ash, a granulated material cured in a curing facility and a coal ash product containing a granulated material combined with a plurality of the granulated material, from a reference value A primary classification step of classifying the larger and smaller than the reference value, a coal ash product larger than the reference value is decomposed below the reference value, and the decomposed coal product is again subjected to the primary classification step. A cracking step of returning the coal ash product.

本発明によれば、造粒物や造粒物結合体を含む石炭灰生成物の大きさを所定径以下とする石炭灰生成物の処理装置及び処理方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the processing apparatus and processing method of the coal ash product which makes the magnitude | size of the coal ash product containing a granulated material and a granulated material combination into a predetermined diameter or less can be provided.

本発明の実施形態の分級装置を含む造粒物製造設備を示す図である。It is a figure showing the granulated material manufacturing equipment containing the classification device of the embodiment of the present invention.

以下、本発明の実施形態について説明する。
図１は本発明の実施形態の処理装置２００を含む造粒物製造設備１を示す図である。
造粒物製造設備１は、石炭灰から砂程度の粒径（〜４０ｍｍ）の造粒物を製造するため、石炭灰、固化材（セメント）、水、リターン材を含む添加材を混合機１０で混合し、混合物を造粒機４０へ移送し最大４０ｍｍ程度に造粒する設備である。Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a diagram showing a granulated material manufacturing facility 1 including a processing apparatus 200 according to an embodiment of the present invention.
The granulated material production equipment 1 mixes an additive including coal ash, a solidifying material (cement), water, and a return material with a mixer 10 in order to produce a granulated material having a particle size of sand (砂 40 mm) from coal ash. This is a facility for transferring the mixture to a granulator 40 and granulating the mixture to a maximum of about 40 mm.

石炭灰造粒物の原料は、石炭灰（フライアッシュ、クリンカアッシュを含む）を主原料とし、固化剤として少量のセメント、水、及びリターン材を含む添加材を加えたものである。フライアッシュとは、燃焼ガスとともに吹き上げられるレベルの球状の微粒子で、電気集塵機などで回収される。成分はＳｉＯ２，Ａｌ２Ｏ３，Ｆｅ２Ｏ３，ＣａＯを含む。粒度は０．１ｍｍ以下が９０％である。The raw material of the coal ash granulated product is obtained by using coal ash (including fly ash and clinker ash) as a main raw material, and adding a small amount of cement, water, and an additive containing a return material as a solidifying agent. Fly ash is spherical fine particles that are blown up together with the combustion gas, and are collected by an electric dust collector or the like. Component comprises SiO 2, Al2O 3, Fe 2 O 3, CaO. The particle size is 90% for 0.1 mm or less.

石炭灰造粒物の造粒物製造設備１は、原料を混合する混合機１０と、混合機１０により混合された原料を一時的に貯蔵して一定量を流出する第１ホッパー２０と、第１ホッパー２０から流出される原料を一定の流量で連続運搬する定量供給機３０と、定量供給機３０から一定の流量で連続運搬される原料を造粒する造粒機４０と、造粒機４０により造粒された造粒物を運搬するコンベアシステム５０とを備える。   The coal ash granulated product manufacturing equipment 1 includes a mixer 10 for mixing raw materials, a first hopper 20 for temporarily storing the raw materials mixed by the mixer 10 and flowing out a predetermined amount, A quantitative feeder 30 for continuously transporting the raw material flowing out from one hopper 20 at a constant flow rate, a granulator 40 for granulating the raw material continuously transported from the quantitative feeder 30 at a constant flow rate, and a granulator 40 And a conveyor system 50 that conveys the granulated material.

造粒物製造設備１は、さらに、上下左右するコンベアシステム５０により運搬された造粒物を貯蔵する初期養生設備６０と、初期養生設備６０から運搬された造粒物を分級する処理装置２００とを備える。   The granule production equipment 1 further includes an initial curing device 60 that stores the granules transported by the conveyor system 50 that moves up and down and left and right, and a processing device 200 that classifies the granules transported from the initial curing device 60. Is provided.

混合機１０は、所定量に計量された各原料が流入される容器１１と、容器１１内部に配置され、回転軸を中心として回転する撹拌羽根１２と、を備える。
容器１１の上部より、原料として石炭灰、固化材、水、及び添加材が流入される。原料は、回転する撹拌羽根１２によって混合される。混合された材料は、容器１１の下部に設けられた流出口より、下部に配置された第１ホッパー２０内に流出される。
このように造粒前に混合機１０を用いて原料を混合するため、造粒工程において石炭灰、固化剤、水、および転化材を含む原料を、確実に混合することができる。The mixer 10 includes a container 11 into which each raw material measured in a predetermined amount flows, and a stirring blade 12 disposed inside the container 11 and rotating around a rotation axis.
From the upper part of the container 11, coal ash, solidified material, water, and additives are flowed as raw materials. The raw materials are mixed by the rotating stirring blades 12. The mixed material flows out of the outlet provided in the lower part of the container 11 into the first hopper 20 arranged in the lower part.
As described above, since the raw materials are mixed using the mixer 10 before the granulation, the raw materials including the coal ash, the solidifying agent, the water, and the converter can be surely mixed in the granulation step.

混合機１０によって混合された原料は、第１ホッパー２０内に流入される。第１ホッパー２０は、容器断面が円錐状または角錐状に形成され、流出口に向かって減少している容器である。
第１ホッパー２０は、混合された原料を一旦貯蔵し、流出口より定量供給機３０に対して定量的に供給する。The raw materials mixed by the mixer 10 flow into the first hopper 20. The first hopper 20 is a container having a conical or pyramid-shaped container cross section and decreasing toward the outlet.
The first hopper 20 temporarily stores the mixed raw material and supplies it quantitatively to the quantitative feeder 30 from the outlet.

定量供給機３０は、モータで回転駆動される、らせん状のスクリューフィーダ３１を備える。混合された原料は一定の流量で、次工程の造粒機４０に連続して運搬される。定量供給機３０の供給量はスクリューフィーダ３１の回転数とリニアに比例し、供給量の調整が容易に可能である。   The metering device 30 includes a spiral screw feeder 31 that is driven to rotate by a motor. The mixed raw material is continuously conveyed at a constant flow rate to the granulator 40 in the next step. The supply amount of the fixed-quantity supply device 30 is linearly proportional to the rotation speed of the screw feeder 31, and the supply amount can be easily adjusted.

造粒機４０は、所定角度で傾斜されて回転可能に設けられている円形トレイ状のパン４１と、パン４１を回転させる駆動源（図示せず）と、を備える。
このパン４１に混合材料を投入し、水を加えて加湿させながら回転し、核を成長させて、造粒を行う。The granulator 40 includes a circular tray-shaped pan 41 that is rotatably provided at a predetermined angle and a drive source (not shown) that rotates the pan 41.
The mixed material is put into the pan 41, and the mixture is rotated while being humidified by adding water to grow nuclei and perform granulation.

パン４１は、傾斜角度の調整が可能であり、パン４１の傾斜角度や回転速度を変更することにより、造粒される粒子の大きさを調整することができる。
所定の径に造粒された粒子は、遠心力によってパン４１の半径方向の外側に移動する。パン４１の前面は開口している。パン４１の回転中心付近に原料を流入すると、粒径が大きくなるにしたがって造粒物は、遠心力によって外周方向に移動する。そして所定の径になると開口部から外部に放出される。
すなわち、原料を定量供給機３０よって造粒機４０に連続的に流入すると、造粒機４０の外周部から所定径に成長した造粒物が連続的に押し出されていく。
本実施形態で造粒される粒径は最大４０ｍｍ程度であり、天然の砂程度の粒径である。
このように、造粒機４０を連続的に回転することにより、所定径の造粒物が連続的に製造される。The tilt angle of the pan 41 can be adjusted, and the size of the granulated particles can be adjusted by changing the tilt angle and the rotation speed of the pan 41.
The particles granulated to a predetermined diameter move to the outside of the pan 41 in the radial direction by centrifugal force. The front surface of the pan 41 is open. When the raw material flows near the rotation center of the pan 41, the granulated material moves in the outer peripheral direction by centrifugal force as the particle size increases. Then, when the diameter reaches a predetermined value, it is released from the opening to the outside.
That is, when the raw material is continuously flowed into the granulator 40 by the quantitative feeder 30, the granulated material having a predetermined diameter is continuously extruded from the outer peripheral portion of the granulator 40.
In this embodiment, the maximum particle diameter is about 40 mm, which is about the same as that of natural sand.
In this way, by continuously rotating the granulator 40, granules having a predetermined diameter are continuously produced.

造粒機４０において所定径（実施形態では４０ｍｍ）に成長して外部に飛び出した造粒物は、コンベアシステム５０によって運搬される。
コンベアシステム５０は、連続的に稼働しており、造粒物は、連続可動するコンベアシステム５０で初期養生設備６０へ移送される。The granulated material that has grown to a predetermined diameter (40 mm in the embodiment) in the granulator 40 and jumped out is transported by the conveyor system 50.
The conveyor system 50 operates continuously, and the granulated material is transferred to the initial curing equipment 60 by the continuously movable conveyor system 50.

このように、本実施形態において、定量供給機３０、造粒機４０、及びコンベアシステム５０が、連続的に稼働している。すなわち、定量供給機３０に原料が連続して流入されると、定量供給機３０、造粒機４０及びコンベアシステム５０は連続的に稼働しているため、造粒物は連続的に製造されて放出される。   As described above, in the present embodiment, the fixed-quantity feeder 30, the granulator 40, and the conveyor system 50 operate continuously. That is, when the raw material continuously flows into the fixed quantity feeder 30, the fixed quantity feeder 30, the granulator 40, and the conveyor system 50 are continuously operated, so that the granulated material is continuously manufactured. Released.

コンベアシステム５０は連続的に造粒される造粒物を、初期養生設備６０に運搬する。
初期養生設備６０で所定の日数（数週間〜１カ月程度）を置いた造粒物は、複数結合して造粒物結合体となるものもある。The conveyor system 50 conveys the continuously granulated material to the initial curing equipment 60.
Some of the granules left for a predetermined number of days (several weeks to about one month) in the initial curing equipment 60 are combined to form a granulated product aggregate.

これらの造粒物と造粒物結合体とを含む石炭灰生成物は、処理装置２００に運搬される。処理装置２００は、第２ホッパー７０と、一次分級機８０と、分解機９０と、コンベア１００と、多段式二次分級機１１０とを備える。
処理装置２００において、石炭灰生成物は、第２ホッパー７０を経て、一次分級機８０に運搬される。
一次分級機８０は、水平または傾斜したトラフに、機械的に上下運動の加わった振動を与え、石炭灰生成物を斜め前方に投出すようにして移動、供給し、石炭灰生成物を、本実施形態の基準値としての４０ｍｍ以下と４０ｍｍより大きいものとに仕分する。The coal ash product including these granules and the granule combination is transported to the treatment device 200. The processing apparatus 200 includes a second hopper 70, a primary classifier 80, a decomposer 90, a conveyor 100, and a multi-stage secondary classifier 110.
In the treatment device 200, the coal ash product is transported to the primary classifier 80 via the second hopper 70.
The primary classifier 80 mechanically imparts vibration with vertical movement to a horizontal or inclined trough, and moves and supplies the coal ash product so as to project the coal ash product diagonally forward. It is classified into a reference value of 40 mm or less and a reference value of more than 40 mm in the embodiment.

４０ｍｍより大きいものは分解機９０に運搬される。分解機９０は、互いに平行に延びる２本の軸部を備える。それぞれの軸部は、径方向外側に延びる複数の撹拌ブレードを備える。一方の軸部に設けられた撹拌ブレードと、他方の軸部に設けられた撹拌ブレードとは、それぞれの軸部が回転すると、互いの隙間を４０ｍｍに保って交差する。したがって、４０ｍｍより大きい石炭生成物のうち、撹拌ブレードに撹拌されて分解されて４０ｍｍ以下になったもののみが、撹拌ブレードの間を通過する。
分解された石炭灰生成物、すなわち、４０ｍｍより大きかったが、４０ｍｍ以下に分解された造粒物、及び複数の造粒物が結合して４０ｍｍ以上の造粒物結合体であったが、４０ｍｍ以下に分解された造粒物は、再度、第２ホッパー７０に流入され、一次分級機８０によって分離される。Those larger than 40 mm are transported to the decomposer 90. The disassembler 90 includes two shafts extending parallel to each other. Each shaft portion includes a plurality of stirring blades extending radially outward. The stirring blade provided on one shaft and the stirring blade provided on the other shaft intersect with each other when the respective shafts rotate, keeping a gap of 40 mm between them. Therefore, of the coal products larger than 40 mm, only those coal products that have been stirred and decomposed to 40 mm or less by the stirring blade pass between the stirring blades.
Decomposed coal ash product, that is, granules larger than 40 mm but decomposed to 40 mm or less, and a plurality of granules were combined to form a granule aggregate of 40 mm or more. The granules decomposed below are again flown into the second hopper 70 and separated by the primary classifier 80.

４０ｍｍ以下の石炭灰生成物は、コンベア１００によって運ばれて、多段式の多段式二次分級機１１０に流入される。
多段式二次分級機１１０で石炭灰生成物は、４０ｍｍ、２３ｍｍ、２８ｍｍ、１０ｍｍ、３ｍｍ及び３ｍｍ未満の径の細粒粉に分級される。
そして、用途に応じて適切な粒径を有する石炭灰生成物（造粒物）が出荷される。The coal ash product of 40 mm or less is conveyed by the conveyor 100 and flows into the multi-stage secondary classifier 110.
In the multistage secondary classifier 110, the coal ash product is classified into fine powder having a diameter of less than 40 mm, 23 mm, 28 mm, 10 mm, 3 mm and 3 mm.
Then, a coal ash product (granulated material) having an appropriate particle size according to the application is shipped.

多段式二次分級機１１０の全ての篩を通過した製品として必要な粒径に満たない３ｍｍ未満の細粒粉は、回収されて粉末付着機１２０に貯蔵され、コーティング材として、造粒機４０から排出された湿潤状態の造粒物に散布される。
このように造粒物の表面に細粒粉を付着することにより、堆積された造粒物同士の接着及び固着の割合を減少させることができる。また、製品として必要な粒径に満たない細粒粉を廃棄せずコーティング材として繰り返し利用するため、廃棄物の量が減少する。Fine powder having a particle size of less than 3 mm less than the particle size required as a product passing through all the sieves of the multi-stage secondary classifier 110 is collected and stored in the powder applicator 120, and is used as a coating material in the granulator 40. Is sprayed on the wet granules discharged from.
By adhering the fine powder to the surface of the granules in this way, the rate of adhesion and fixation between the deposited granules can be reduced. In addition, since the fine powder having a particle size less than that required as a product is repeatedly used as a coating material without discarding, the amount of waste is reduced.

以上、本実施形態によると、石炭灰を含む原料から造粒され、養生設備において養生された造粒物及び前記造粒物が複数結合した造粒物結合体を含む石炭灰生成物を、基準値(実施形態では４０ｍｍ）より大きいものと基準値以下のものとで分級する一次分級機８０と、基準値より大きい石炭灰生成物を分解して、基準値の幅の隙間を通った石炭灰生成物のみを排出して一次分級機８０に戻す分解機９０と、を備える、石炭灰生成物の処理装置２００を備える。
これによると、分解機９０は、基準値以下に分解された石炭生成物を一次分級機８０に戻すので、二回目に一次分級機８０を通る場合に、再度、分解機９０に戻されることなく、全て多段式二次分級機１１０に運ばれる。したがって、石炭生成物を、何度も分解機９０を通すことなく効率的に多及び段式二次分級機１１０に運ぶことができ、処理速度が向上する。As described above, according to the present embodiment, a coal ash product including a granulated material that has been granulated from a raw material including coal ash and cured in a curing facility and a granulated material combined with a plurality of the granulated materials is defined as a standard. A primary classifier 80 that classifies the ash product larger than the reference value (40 mm in the embodiment) and the ash product smaller than the criterion value; A decomposer 90 that discharges only the product and returns it to the primary classifier 80.
According to this, since the decomposer 90 returns the coal product decomposed below the reference value to the primary classifier 80, when passing through the primary classifier 80 for the second time, it is not returned to the decomposer 90 again. Are all transferred to the multistage secondary classifier 110. Therefore, the coal product can be efficiently transported to the multi-stage and stage-type secondary classifier 110 without passing through the cracker 90 many times, and the processing speed is improved.

１ 造粒物製造設備
１０ 混合機
１１ 容器
１２ 撹拌羽根
２０ ホッパー
３０ 定量供給機
３１ スクリューフィーダ
４０ 造粒機
４１ パン
５０ コンベアシステム
５５ 制御部
５６ 壁部
６０ 初期養生設備
７０ 第２ホッパー
８０ 一次分級機
９０ 分解機
１００ コンベア
１１０ 多段式二次分級機
２００ 処理装置DESCRIPTION OF SYMBOLS 1 Granulated-material manufacturing equipment 10 Mixer 11 Container 12 Stirring blade 20 Hopper 30 Quantitative feeder 31 Screw feeder 40 Granulator 41 Pan 50 Conveyor system 55 Control part 56 Wall part 60 Initial curing equipment 70 Second hopper 80 Primary classifier 90 Decomposer 100 Conveyor 110 Multi-stage secondary classifier 200 Processing equipment

Claims (7)

石炭灰を含む原料から造粒され、養生設備において養生された造粒物及び前記造粒物が複数結合した造粒物結合体を含む石炭灰生成物を、基準値より大きいものと前記基準値以下のものとで分級する一次分級機と、
前記基準値より大きい石炭灰生成物を分解し、前記基準値以下に分解された石炭生成物を前記一次分級機に戻す分解機と、
を備える、石炭灰生成物の処理装置。A coal ash product containing a granulated product obtained by granulating from a raw material containing coal ash and agglomerated in a curing facility and a granulated product combined with a plurality of the granulated products, and the reference value, A primary classifier that classifies with:
A decomposer that decomposes the coal ash product larger than the reference value and returns the coal product decomposed below the reference value to the primary classifier,
An apparatus for treating a coal ash product, comprising: 前記分解機は、前記基準値より大きい前記石炭灰生成物を分解して、前記基準値の幅の隙間を通った石炭灰生成物のみを排出する、
請求項1に記載の石炭灰生成物の処理装置。The decomposer decomposes the coal ash product larger than the reference value, and discharges only the coal ash product that has passed through a gap having the width of the reference value.
The coal ash product treatment device according to claim 1. 前記分解機は、前記造粒物結合体を、個々の造粒物に分解する、
請求項1または２に記載の石炭灰生成物の処理装置。The decomposer decomposes the aggregate of granules into individual granules,
An apparatus for treating a coal ash product according to claim 1 or 2. 前記分解機は、
互いに平行に延びる２本の軸部と、
それぞれの軸部から径方向外側に延びる複数の撹拌ブレード、とを備える分解部材を備える、
請求項1から３のいずれか1項に記載の石炭灰生成物の処理装置。The decomposer comprises:
Two shaft portions extending parallel to each other;
A plurality of stirring blades extending radially outward from each shaft portion, and
An apparatus for treating a coal ash product according to any one of claims 1 to 3. 前記基準値以下の前記石炭灰生成物を分級する多段式二次分級機を備える、
請求項1から４のいずれか1項に記載の石炭灰生成物の処理装置。With a multi-stage secondary classifier for classifying the coal ash product below the reference value,
An apparatus for treating a coal ash product according to any one of claims 1 to 4. 前記多段式二次分級機の最小径のふるいを通過した石炭灰生成物を、
前記養生設備において養生される前の前記石炭灰生成物に付着させる付着装置を備える請求項５に記載の石炭灰生成物の処理装置。Coal ash product passed through the smallest diameter sieve of the multi-stage secondary classifier,
The apparatus for treating a coal ash product according to claim 5, further comprising an attachment device for attaching the coal ash product before being cured in the curing equipment. 石炭灰を含む原料から造粒され、養生設備において養生された造粒物及び前記造粒物が複数結合した造粒物結合体を含む石炭灰生成物を、基準値より大きいものと前記基準値以下のものとで分級する一次分級ステップと、
前記基準値より大きい石炭灰生成物を前記基準値以下に分解し、分解された石炭生成物を、再度、一次分級ステップに戻す分解ステップと、
を含む石炭灰生成物の処理方法。A coal ash product containing a granulated product obtained by granulating from a raw material containing coal ash and agglomerated in a curing facility and a granulated product combined with a plurality of the granulated products, and the reference value, A primary classification step of classifying with:
A decomposition step of decomposing a coal ash product larger than the reference value to the reference value or less, and returning the decomposed coal product to the primary classification step again,
A method for treating a coal ash product comprising:
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