JP2009178849A - Method for manufacturing mixed type weight fine aggregate, production/shipment system, and supply system - Google Patents

Method for manufacturing mixed type weight fine aggregate, production/shipment system, and supply system Download PDF

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JP2009178849A
JP2009178849A JP2008017253A JP2008017253A JP2009178849A JP 2009178849 A JP2009178849 A JP 2009178849A JP 2008017253 A JP2008017253 A JP 2008017253A JP 2008017253 A JP2008017253 A JP 2008017253A JP 2009178849 A JP2009178849 A JP 2009178849A
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fine aggregate
mixed
raw material
heavy
raw materials
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Takeshi Hamada
武 濱田
Minoru Yoshimoto
稔 吉本
Yasuhide Higo
康秀 肥後
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Taiheiyo Cement Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To stably produce a weight fine aggregate uniform in quality and to maximally utilize the weight fine aggregate supplied from each production district. <P>SOLUTION: In a method for manufacturing the mixed type weight fine aggregate by mixing at least two raw materials, the production of the mixed type weight fine aggregate is carried out in a manufacturing facility equipped with at least one of an indoor storage space, a storage silo, or a storage tank for receiving at least each raw material, a device for metering each raw material, and a concrete kneading mixer for obtaining the mixed type weight fine aggregate by mixing each raw material. The manufacturing facility is preferably equipped further with a moisture measuring device for measuring water adherent to each raw material. As the manufacturing facility, a facility equipped with a plant for manufacturing ready-mixed concrete can be used. At least two raw materials to be mixed can contain materials in a complemental relationship in any physical property of density, a particle shape, particle size distribution, or solidification easiness. The raw material of easy solidification and the raw material of difficult solidification are mixed together so that the occurrence of solidification can be prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、特定の製造施設で2種以上の各原材料を混合して混合型重量細骨材を製造する方法、及び、一元的な管理の下に、顧客のニーズに応じた高品質の重量細骨材を生産出荷することが可能な混合型重量細骨材の生産出荷体制及び供給システムに関する。   The present invention relates to a method for producing a mixed-weight fine aggregate by mixing two or more kinds of raw materials at a specific production facility, and a high-quality weight according to customer needs under a centralized management. The present invention relates to a production / shipment system and a supply system of a mixed heavy fine aggregate capable of producing and shipping fine aggregates.

重量コンクリートは、通常より単位容積重量の大きいコンクリートであり、建機等のカウンターウエイト、消波ブロック、護岸堤用コンクリート、船舶バラスト材、放射線遮断壁等の様々な用途に用いられている。重量コンクリートに用いる重量骨材としては、磁鉄鉱や赤鉄鉱などの鉄鉱石が多く用いられてきたが、近年の旺盛な鉄鋼需要によって鉄鉱石の需給は逼迫しており、重量骨材として良質なものの入手が困難になってきている。一方で、重量骨材の品質・性能に対するニーズも多様化してきている。また、高価な天然資源の使用は、経済性及び環境への配慮の観点からも好ましくないため、鉄鉱石骨材に代わるものとして銅スラグ、電気炉酸化スラグ等の産業副産物の利用が検討されている。   Heavy concrete is a concrete having a larger unit volume weight than usual, and is used in various applications such as counterweights for construction machinery, wave-dissipating blocks, concrete for seawalls, ship ballast materials, radiation shielding walls, and the like. Iron ores such as magnetite and hematite have been used as heavy aggregates for heavy concrete, but the supply and demand for iron ore has been tight due to the recent strong demand for steel. It is getting difficult. On the other hand, the needs for quality and performance of heavy aggregates are also diversifying. In addition, the use of expensive natural resources is not preferable from the viewpoint of economic efficiency and environmental considerations, so the use of industrial by-products such as copper slag and electric furnace oxidation slag is being considered as an alternative to iron ore aggregate. Yes.

例えば、特許文献1には、 鉄鉱石骨材に代わるものとして、製鋼用転炉ダストを篩い分けして得られた、主要成分がFeO、Fe、金属Feからなる混合物を重量骨材として用い、この混合物にセメントを配合し、成型、構造物化した重量コンクリートが提案されている。 For example, in Patent Document 1, as an alternative to iron ore aggregate, a heavy aggregate made of a mixture of FeO, Fe 2 O 3 , and metal Fe, which is obtained by sieving converter dust for steelmaking, is obtained. As a result, heavy concrete has been proposed in which cement is mixed with this mixture and molded and structured.

また、特許文献2には、球換算直径50μm未満の鉄系ダストに対し、セメントを3〜12重量%混合した後、造粒して得た球換算直径200μmのペレットを単独又は球形で、かつ、その直径が20μm以上の粒子数が全粒子数の内の70%以上の鉄系ダストを混合した混合物を重量骨材として用い、この混合物にセメントを配合し、成型、構造物化した重量コンクリートが提案されている。   Patent Document 2 discloses that pellets having a spherical equivalent diameter of 200 μm obtained by granulating after mixing 3 to 12% by weight of cement with iron-based dust having a spherical equivalent diameter of less than 50 μm, and spherical, and A mixture of iron dust with a diameter of 20 μm or more and 70% or more of the total number of particles is used as a heavy aggregate, and cement is mixed into this mixture to form and structure a heavy concrete. Proposed.

さらに、特許文献3には、セメントに添加する骨材の内、細骨材の一部又は全部を高炉水砕スラグから分離した粒状銑鉄とし、基本的に骨材の粒度調整が不要で、材料の分離の問題が生じ難い重量コンクリートを提供する技術が提案されている。   Furthermore, in Patent Document 3, among aggregates to be added to cement, part or all of the fine aggregate is granular pig iron separated from blast furnace granulated slag, and basically no adjustment of the aggregate particle size is required. There has been proposed a technique for providing heavy concrete which is less likely to cause separation problems.

特開平05−319880号公報JP 05-31880 A 特開平06−024813号公報Japanese Patent Laid-Open No. 06-024813 特開2004−210574号公報JP 2004-210574 A

しかし、上記特許文献に記載のような鉄系の重量細骨材原材料(単に「原材料」とも称す)や、これらを用いて製造される重量細骨材は、概して、金属鉄を含むため、出荷や使用までに屋外ストックヤードのような風雨に曝され易い場所で長時間貯蔵されると空気中の酸素と水分による酸化により固結が生じ、均一で高品質(設計通りの品質)の重量細骨材を安定して供給し難いという問題があった。   However, since iron-based heavy fine aggregate raw materials (also simply referred to as “raw materials”) as described in the above-mentioned patent documents and heavy fine aggregates produced using these generally contain metallic iron, And when used for long periods of time in places that are easily exposed to wind and rain, such as outdoor stockyards, cause solidification due to oxidation by oxygen and moisture in the air, resulting in uniform, high quality (as designed quality) There was a problem that it was difficult to stably supply the aggregate.

一方、重量細骨材はニーズがスポット的であるため専門の製造施設は無く、原材料の混合もパワーショベル等を利用して行うか、一般の砂製造事業所での設備を利用して行うのが実状であった。しかし、原材料の混合にあたってパワーショベル等を用いた場合には、得られる混合型重量細骨材が層をなしてしまい均一な製品を得難いという問題があった。また、上記砂製造事業所で、複数のホッパーとベルトコンベアとを備え、各ホッパーからの抽出物をベルトコンベアの先端部に設けた回転羽で混合する装置やトロンメルを用いた場合には、パワーショベル等のみを用いる場合より良好な混合状態となるが、各々の重量細骨材原材料の表面に付着する水分量が異なる場合は水分補正をし難いため、配合設計通りの配合割合で混合することができず、均一かつ高品質の重量細骨材を生産することができないという問題があった。また、これらの製造方法では上記固結の問題にも対応し難かった。   On the other hand, there are no specialized manufacturing facilities for heavy aggregate because the needs are spot-like, and mixing of raw materials is performed using a power shovel, etc., or using equipment at a general sand manufacturing establishment. Was real. However, when a power shovel or the like is used for mixing raw materials, there is a problem that it is difficult to obtain a uniform product because the obtained mixed heavy fine aggregate forms a layer. In addition, when the sand production facility is equipped with a plurality of hoppers and belt conveyors, and uses an apparatus or a trommel that mixes the extract from each hopper with a rotary blade provided at the tip of the belt conveyor, Mixing will be better than when using only excavators, etc., but if the amount of moisture adhering to the surface of each heavy fine aggregate raw material is different, it is difficult to correct the moisture, so mix at the blending ratio according to the blending design. There is a problem in that it is impossible to produce a uniform and high-quality heavy fine aggregate. In addition, these manufacturing methods are difficult to cope with the above-described consolidation problem.

上記に加え、原材料の選択範囲の拡大に伴い、それらの原材料の産地は、日本全国に散在するようになってきているとともに、各産地から供給できる原材料の量や時期にばらつきがある。また、用途の拡大や顧客のニーズの多様化に伴い、種々の品質・性能の重量細骨材を製造する必要が生じてきている。しかし、種々の原材料を長期的に貯蔵できる施設や顧客からの種々のニーズに対応できる重量細骨材専用の製造設備がないため、種々の原材料を十分に活用して様々なニーズに応じられる状況にはない。   In addition to the above, along with the expansion of the selection range of raw materials, the production areas of those raw materials are scattered all over Japan, and the amount and timing of raw materials that can be supplied from each production area vary. In addition, with the expansion of applications and diversification of customer needs, it has become necessary to produce heavy fine aggregates of various quality and performance. However, since there are no facilities that can store various raw materials for a long period of time and there are no manufacturing facilities dedicated to heavy aggregates that can meet various needs from customers, various raw materials can be fully utilized to meet various needs. Not.

そこで、本発明は、上記従来の技術における問題点に鑑みてなされたものであって、2種以上の原材料を用いて略均一かつ品質の良い混合型重量細骨材を安定して製造する方法を提供するとともに、種々の原材料を用いて顧客からの様々なニーズに対応できる混合型重量細骨材の生産出荷体制及び効率的な供給システムを提供することを目的とする。   Therefore, the present invention has been made in view of the above-described problems in the prior art, and is a method for stably producing a mixed heavy fine aggregate of substantially uniform quality and high quality using two or more kinds of raw materials. It is an object of the present invention to provide a production and shipment system and an efficient supply system of mixed heavy fine aggregates that can meet various needs from customers using various raw materials.

上記目的を達成するため、本発明の一つは、2種以上の原材料を混合して混合型重量細骨材を製造する方法であって、少なくとも前記各原材料を受け入れるための屋内貯蔵場又は貯蔵サイロ又は貯蔵タンクの1種以上と、前記各原材料の計量装置と、前記各原材料を混合して混合型重量細骨材を得るためのコンクリート練りミキサーとを備えた製造施設で行うことを特徴とする。(請求項1)   In order to achieve the above object, one of the present invention is a method for producing a mixed heavy fine aggregate by mixing two or more kinds of raw materials, and is an indoor storage place or storage for receiving at least each of the raw materials. It is carried out in a manufacturing facility equipped with one or more types of silos or storage tanks, a weighing device for each raw material, and a concrete kneading mixer for mixing the raw materials to obtain a mixed heavy fine aggregate. To do. (Claim 1)

そして、この発明によれば、各原材料を屋内貯蔵場等の風雨に曝されることのない空間で保管するため、原材料の固結を防止することができる。また、コンクリート練りミキサーは、前記既存の細骨材混合方法に比べれば混合力が高く、仮に固結が混入したとしても容易に除去でき、軽度の固結であれば解砕することもできる。従って、略均一かつ品質の良い製品が得られる。   And according to this invention, since each raw material is stored in the space which is not exposed to wind and rain, such as an indoor storage place, solidification of a raw material can be prevented. Further, the concrete kneading mixer has a higher mixing force than the existing fine aggregate mixing method, and can be easily removed even if solidification is mixed, and can be crushed if lightly consolidated. Accordingly, a substantially uniform and high quality product can be obtained.

前記混合型重量細骨材の製造方法において、前記製造施設に、さらに、前記各原材料の付着水を測定するための水分測定装置を備えることは好ましい。(請求項2)これにより、各原材料に付着した水分を考慮して各原材料を配合・計量することができるため、配合設計により正確に従った混合型重量細骨材を製造することができる。   In the manufacturing method of the mixed heavy fine aggregate, it is preferable that the manufacturing facility further includes a moisture measuring device for measuring the attached water of the raw materials. (Claim 2) Thereby, each raw material can be blended and measured in consideration of moisture adhering to each raw material, so that a mixed heavy fine aggregate can be manufactured accurately according to blending design.

前記混合型重量細骨材の製造方法において、前記製造施設を、生コンクリート製造用プラントを備えた施設とすることは好ましい。(請求項3)生コンクリート製造用プラントを備えた施設は、日本全国に多数存在するが遊休の施設が増えてきている。この施設には貯蔵サイロ、計量装置、コンクリート練りミキサー、水分測定装置等が備わっているので、遊休の施設を混合型重量細骨材専用の製造施設とすることで、再利用が図れるとともに混合型重量細骨材を製造するための新たな施設を建設する必要もなくなるので一挙両得である。   In the method for producing the mixed heavy fine aggregate, it is preferable that the production facility is a facility including a plant for producing fresh concrete. (Claim 3) There are many facilities equipped with ready-mixed concrete production plants all over Japan, but the number of idle facilities is increasing. This facility is equipped with a storage silo, weighing device, concrete mixing mixer, moisture measuring device, etc., so that the idle facility can be reused and mixed by making it a manufacturing facility dedicated to mixed heavy aggregates. This is a great advantage because it eliminates the need to build a new facility to produce heavy fine aggregates.

上記施設における混合型重量細骨材の製造方法において、混合する2種以上の各原材料を、比重、粒形、粒度分布、固結のし易さのいずれかの物性において補完関係にあるものを含むものとすることは好ましい。(請求項4)これにより、製造する混合型重量細骨材の品質を向上させることができるとともに原材料の選択範囲が広げられ単独では使用できなかった原材料も使用できるようになる。   In the manufacturing method of mixed-type heavy fine aggregates at the above facilities, two or more kinds of raw materials to be mixed are complementary to each other in physical properties of specific gravity, particle shape, particle size distribution, and ease of consolidation. It is preferable to include. (Claim 4) As a result, the quality of the mixed heavy fine aggregate to be manufactured can be improved, and the selection range of the raw materials can be expanded, so that raw materials that cannot be used alone can be used.

前記混合型重量細骨材の製造方法において、前記物性を固結のし易さとし、前記補完関係にあるものを、固結し易い原材料と固結し難い原材料とすることは好ましい。(請求項5)特に固結し易い鉄系の原材料を用いる場合は考慮する必要がある。これにより、固結に対するリスクを低減でき、品質の良い混合型重量細骨材を安定して製造できる。   In the method for producing the mixed heavy fine aggregate, it is preferable that the physical properties are easy to consolidate, and the complementary relationship is a raw material that is difficult to consolidate with a raw material that is easily consolidated. (Claim 5) It is necessary to consider when using iron-based raw materials which are particularly easily consolidated. Thereby, the risk with respect to caking can be reduced and a quality mixed-type heavy fine aggregate can be manufactured stably.

また、本発明の他の一つは、混合型重量細骨材の生産出荷体制であって、一元的な管理の下で異なる複数の産地からの種々の原材料を受け入れて保管するためのストックヤードを備える重量骨材供給センターと、前記重量骨材供給センターとネットワークで繋がった上記製造施設とを一箇所あるいは複数箇所に設けてなることを特徴とする。(請求項6)   Another aspect of the present invention is a production and shipment system for mixed heavy fine aggregates, which is a stock yard for receiving and storing various raw materials from a plurality of different production areas under a centralized management. A heavy aggregate supply center including the above-described manufacturing facility connected to the heavy aggregate supply center through a network is provided at one or a plurality of locations. (Claim 6)

この発明によれば、種々の原材料を受け入れるストックヤードを備える重量骨材供給センターを設けることで種類、発生量、発生時期等にばらつきのある原材料に対しフレキシブルに対応でき、種々の原材料利用を品質劣化させることなく大量かつ長期的に保管し需要に応じて適宜供給できるといった商社やデパート的機能が得られる。また、この重量骨材供給センターと製造施設とをネットワークで繋げることにより、各製造施設は品質の確かな種々の原材料を必要なだけいつでも購入することができ物流・製造の効率化が図れるとともに、多様なニーズにも対応できる。   According to the present invention, by providing a heavy aggregate supply center equipped with a stock yard for receiving various raw materials, it is possible to flexibly cope with raw materials having variations in type, generation amount, generation time, etc. A trading company or department store function that can be stored in a large amount for a long time without deterioration and can be appropriately supplied according to demand is obtained. In addition, by connecting the heavy-weight aggregate supply center and the manufacturing facility through a network, each manufacturing facility can purchase various raw materials with reliable quality at any time as needed, thereby improving the efficiency of logistics and manufacturing. It can respond to various needs.

さらに、本発明の他の一つは、上記生産出荷体制を用いた混合型重量細骨材の供給システムであって、顧客からの製品仕様あるいは顧客の注文に応じて作成した製品仕様と、前記重量骨材供給センターに保管されている各原材料の物性データと貯蔵量とにより製品の配合設計を行い、前記配合設計に基づく製品製造を前記製造施設に指示し、前記製品製造に必要な各原材料を前記重量骨材供給センターから前記製造施設に供給し、前記製造施設で混合型重量骨材の製品製造をして前記顧客に供給することを特徴とする。(請求項7)   Furthermore, another one of the present invention is a mixed heavy fine aggregate supply system using the production and shipment system described above, wherein the product specification created according to the customer's product specification or the customer's order, The product composition design is performed based on the physical property data and storage amount of each raw material stored in the heavy aggregate supply center, the product production based on the composition design is instructed to the manufacturing facility, and each raw material necessary for the product manufacture is provided. Is supplied from the heavy aggregate supply center to the manufacturing facility, and a mixed heavy aggregate product is manufactured at the manufacturing facility and supplied to the customer. (Claim 7)

この発明によれば、製品仕様の作成、それと重量骨材供給センターでの原材料の保管状況に応じた配合設計、製造施設での配合設計に基づく製品製造が一元的な管理の下で行われるので、ニーズにあった品質の確かな混合型重量細骨材製品を顧客に迅速かつ効率的に供給できる。   According to the present invention, the creation of product specifications, the blending design according to the storage status of the raw materials at the heavy aggregate supply center, and the product manufacturing based on the blending design at the manufacturing facility are performed under unified management. , We can quickly and efficiently supply customers with reliable mixed-weight heavy aggregate products with quality that meets their needs.

以上のように、本発明にかかる混合型重量細骨材の製造方法によれば、略均一で品質の良い混合型重量細骨材を安定して製造することができる。また、本発明にかかる混合型重量細骨材の生産出荷体制によれば、種々の原材料を使いこなせるようになり選択範囲が広げられるとともに顧客からの様々なニーズにも対応できる。さらに、本発明にかかる混合型重量細骨材の供給システムによれば、製品仕様の作成から製品出荷までが一元管理の下で行え、物流、原材料の保管、製品製造といったあらゆる面で効率化が図れるとともに、ニーズにあった品質の確かな製品を顧客に迅速かつ効率的に供給できる。   As described above, according to the method for producing a mixed heavy fine aggregate according to the present invention, a substantially uniform and high quality mixed heavy fine aggregate can be stably produced. In addition, according to the production and shipment system of the mixed heavy fine aggregate according to the present invention, various raw materials can be used and the selection range can be expanded, and various needs from customers can be met. Furthermore, according to the mixed heavy fine aggregate supply system according to the present invention, from the creation of product specifications to the shipment of products can be performed under a centralized management, and efficiency can be improved in all aspects of logistics, raw material storage, and product manufacturing. In addition to being able to plan, it is possible to quickly and efficiently supply customers with reliable products that meet their needs.

図1は、本発明にかかる混合型重量細骨材の供給システム(以下、適宜「供給システム」と略称する)の一実施の形態を示し、この供給システム1は、大別して、顧客に対する重量細骨材製品の営業及び受注、原材料の購入、原材料や製品に関する試験等を行い供給システム1全体を一元管理する管理会社(あるいは、一会社における管理事業部)2と、購入した各原材料を保管し製造施設4からの注文あるいは管理会社2からの配合設計を含む出荷指示に応じて製造施設4に原材料を供給する重量骨材供給センター(以下、適宜「供給センター」と略称する)3と、管理会社2からの製造指示を受け、供給センター3から供給された原材料を用いて混合型重量細骨材製品を製造する製造施設4とからなる。   FIG. 1 shows an embodiment of a mixed heavy fine aggregate supply system according to the present invention (hereinafter, abbreviated as “supply system” where appropriate). This supply system 1 is roughly divided into weight reduction for customers. Stores and receives orders for aggregate products, purchases of raw materials, tests on raw materials and products, etc., and a management company (or management division in one company) 2 that centrally manages the entire supply system 1 and stores each purchased raw material A heavy aggregate supply center (hereinafter referred to as “supply center” as appropriate) 3 for supplying raw materials to the manufacturing facility 4 in accordance with an order from the manufacturing facility 4 or a shipping instruction including a blending design from the management company 2, a management The manufacturing facility 4 receives a manufacturing instruction from the company 2 and manufactures a mixed heavy fine aggregate product using the raw materials supplied from the supply center 3.

管理会社
管理会社2は、この供給システム1の中枢として機能するものであって、大別して、営業部門2aと技術部門2bとからなる。
The management company management company 2 functions as the center of the supply system 1, and is roughly divided into a sales department 2a and a technical department 2b.

営業部門2aは、顧客への営業と受注を行いつつ、顧客からの注文に応じて製品仕様を作成し、それによる原材料の配合設計を技術部門2bに依頼する。営業部門2aは、技術部門2bが顧客の注文と供給センター3の原材料のストック情報に基づいて作成した配合指示と、注文量とに基づく製品の製造指示を事前に決めた製造施設4に行うとともに、この製造に必要な原材料を供給センター3から購入させるべく供給センター3にこの製造施設4への出荷指示を行う。また、各産地での原材料の発生情報を入手する都度、購入の是非を検討し適宜産地に注文したり、供給センター3の原材料のストック情報に基づいて各産地に必要な原材料を注文する。尚、産地とは、原材料となる岩石が産出する鉱山、原材料となる産業副産物が発生する工場などを言い、例えば、ミルスケールを産出する製鋼所A、ホットスカーフを産出する製鋼所B、重晶石を産出する鉱山、転炉スラグを産出する製鋼所、粒鉄を産出するセメント工場、銅スラグを産出する精錬所等である。ミルスケールとは、製鋼の圧延工程で発生する酸化鉄の層であり、ホットスカーフは、鋼スラブ表面の溶削処理工程で発生するリサイクル材料である。重晶石は、硫酸バリウムが結晶した鉱物であり、転炉スラグは、転炉で炭素を除去する際に生じた、酸化物と精錬材等が溶融して生成したもの、粒鉄は、セメント工場で、高炉スラグを微粉砕する前に磁選除去され発生した粒状の鉄、銅スラグは、銅の精錬の際に発生したスラグをいう。   The sales department 2a creates a product specification in accordance with an order from the customer while performing sales and orders to the customer, and requests the technical department 2b to mix and design the raw materials. The sales department 2a gives the manufacturing facility 4 that has decided in advance the product instructions based on the order information and the blending instructions created by the technical department 2b based on the customer order and the raw material stock information of the supply center 3. In order to purchase the raw materials necessary for the production from the supply center 3, the supply center 3 is instructed to ship to the production facility 4. In addition, every time the information on the generation of raw materials in each production area is obtained, the pros and cons of purchase are examined and an appropriate order is made to the production area, or the necessary raw materials for each production area are ordered based on the raw material stock information of the supply center 3. The production area refers to a mine that produces rock as a raw material, a factory that produces industrial by-products as a raw material, such as a steel mill A that produces a mill scale, a steel mill B that produces a hot scarf, and a heavy crystal. These include mines that produce stone, steelworks that produce converter slag, cement plants that produce granular iron, and refineries that produce copper slag. The mill scale is a layer of iron oxide generated in the steelmaking rolling process, and the hot scarf is a recycled material generated in the thermal cutting process of the steel slab surface. Barite is a mineral in which barium sulfate is crystallized, converter slag is produced by melting oxide and refining material, etc., generated when carbon is removed by the converter, and granular iron is cement Granular iron and copper slag generated by magnetic separation before pulverizing blast furnace slag at a factory means slag generated during copper refining.

技術部門2bは、営業部門2aと供給センター3と製造施設4を技術的にサポートするとともに各顧客に対するアフターサービス等を行う役割を担う。例えば、営業部門2aから原材料の配合設計の依頼を受け、顧客からの製品仕様あるいは顧客の注文に応じて営業部門2aが作成した製品仕様と、供給センター3に保管されている各原材料の物性データと貯蔵量とにより製品の配合設計を行い、営業部門2aに配合を指示する。また、技術部門2bは、必要に応じて供給センター3及び製造施設4からの試験依頼を受けて原材料や試作品等についての各種試験を行う。例えば、化学組成分析、粒度測定、水分測定、強度試験等である。さらに、技術部門2bは、混合型重量細骨材を納品した後、顧客に対してアフターケア、アフターサービスを行う。混合型重量細骨材は単一型重量細骨材に比べ、その保管や使用の仕方に配慮が必要だからである。   The technical department 2b plays a role of providing technical support for the sales department 2a, the supply center 3, and the manufacturing facility 4, and providing after-sales service to each customer. For example, upon receiving a request for composition design of raw materials from the sales department 2a, product specifications created by the sales department 2a according to the customer's product specifications or customer orders, and physical property data of each raw material stored in the supply center 3 The product is designed according to the storage amount and the storage amount is instructed to the sales department 2a. In addition, the technical department 2b performs various tests on raw materials, prototypes, etc. in response to test requests from the supply center 3 and the manufacturing facility 4 as necessary. For example, chemical composition analysis, particle size measurement, moisture measurement, strength test and the like. Furthermore, after delivering the mixed heavy fine aggregate, the technical department 2b provides aftercare and afterservice to the customer. This is because mixed heavy aggregates need to be more carefully stored and used than single heavy aggregates.

供給センター
供給センター3は、管理会社2と連携を図りつつ、種々の産地から原材料を調達し、保管し、製造施設4に必要量を出荷する資材部としての機能を担う。日本全国に一箇所乃至数箇所配置され、大別して、管理会社2が産地から購入した種々の原材料を受け入れる受入ヤード3aと、多品種の原材料を大量にかつ一定の品質で長期間貯蔵することのできるストックヤード3bと、受け入れた原材料や出荷する原材料、製造施設4で製造された混合型重量細骨材の製品や試作品の品質等を試験する試験室3cと、ストックヤード3bに貯蔵した原材料を製造施設4に出荷するための出荷ヤード3eと、上記保管している原材料に関するデータをデータベース化等によりコンピュータ管理して供給センター3全体を管理制御する管理・制御室3dからなる。
The supply center supply center 3 functions as a material unit that procures and stores raw materials from various production areas and ships the required amount to the manufacturing facility 4 while cooperating with the management company 2. One or several locations throughout Japan, and roughly divided, the receiving yard 3a that accepts various raw materials purchased by the management company 2 from the production area, and the storage of large quantities of raw materials in large quantities and with a constant quality for a long period of time Stock yard 3b, received raw materials, raw materials to be shipped, test room 3c for testing the quality of mixed heavy fine aggregate products and prototypes manufactured at manufacturing facility 4, and raw materials stored in stock yard 3b And a management / control room 3d for managing and controlling the entire supply center 3 by computer management of the data on the stored raw materials by creating a database or the like.

また、供給センター3は、管理会社2の営業部門2a、技術部門2b及び製造施設4とネットワークで繋がっており、原材料のストック情報等の必要情報が共有できるようになっている。特に、供給センター3と製造施設4とがネットワークで繋がることにより、原材料の供給と製品製造での現場における種々の問題に連携して対応でき、混合型重量細骨材の効率的な生産出荷体制が得られる。   The supply center 3 is connected to the sales department 2a, the technical department 2b, and the manufacturing facility 4 of the management company 2 through a network so that necessary information such as raw material stock information can be shared. In particular, the supply center 3 and the manufacturing facility 4 are connected by a network, so that it is possible to cope with various problems in the field of raw material supply and product manufacturing, and an efficient production and shipment system for mixed heavy fine aggregates. Is obtained.

受入ヤード3aは、複数の産地から種々の原材料を適宜受け入れられるようにして設けられ、ホッパー、ベルトコンベア等の輸送機、計量機といった通常骨材を受け入れる際に必要な装置や機器を備える。   The receiving yard 3a is provided so that various raw materials can be appropriately received from a plurality of production areas, and includes devices and equipment necessary for receiving normal aggregates such as transporters such as hoppers and belt conveyors and weighing machines.

ストックヤード3bは、受入ヤード3aに受け入れた多品種の原材料を大量にかつ一定の品質で長期間貯蔵することのできる規模と設備を備え、受け入れた原材料について、産地、品質、性能、目的、用途等に応じて区分けして貯蔵できる屋内貯蔵場である。尚、一時的に保管したり量の少ないものについては、異なる種類の原材料毎に貯蔵サイロ又は貯蔵タンクを用いることもできる。しかし、概して、ストックヤード3bでのスペースは広くなければならない。そのため、供給センター3は、地下施設あるいは海上施設あるいはビルデイング施設などにすることが好ましいが、交通の不便な所に設置することは好ましくない。   The stock yard 3b has a scale and equipment that can store a large amount of raw materials received in the receiving yard 3a in large quantities and with a certain quality for a long period of time. The received raw materials are produced, quality, performance, purpose, and use. It is an indoor storage that can be stored separately according to the situation. In addition, a storage silo or a storage tank can be used for each of different types of raw materials for temporary storage or a small amount. However, in general, the space in the stockyard 3b must be large. For this reason, the supply center 3 is preferably an underground facility, an offshore facility, a building facility, or the like, but it is not preferable to install the supply center 3 at an inconvenient location.

試験室3cは、受け入れた原材料や出荷する原材料、製造施設4で製造された混合型重量細骨材の製品や試作品の品質等を試験するために必要に応じて備えられる。試験室3cが供給センター3内にあることによって、受け入れた原材料のきめ細かな管理や品質調整を行うことができる。また、出荷時には出荷するロットの試験成績表を添付することも可能となる。試験室3cには、水分測定装置、X線回折装置、化学分析設備、顕微鏡観察装置、粒度測定装置等が備えられる。尚、この試験室3cを供給センター3内に設置せずに、管理会社2の技術部門2bなど外部の試験機関を利用することもできるが、現場との連携が図りにくいので好ましくない。   The test chamber 3c is provided as necessary to test the received raw materials, the raw materials to be shipped, the quality of the mixed heavy fine aggregate products manufactured at the manufacturing facility 4, the quality of the prototypes, and the like. By having the test chamber 3c in the supply center 3, it is possible to perform fine management and quality adjustment of the received raw materials. It is also possible to attach a test report of the lot to be shipped at the time of shipment. The test chamber 3c includes a moisture measuring device, an X-ray diffractometer, a chemical analysis facility, a microscope observation device, a particle size measuring device, and the like. It should be noted that an external test organization such as the technical department 2b of the management company 2 can be used without installing the test room 3c in the supply center 3, but this is not preferable because it is difficult to cooperate with the site.

出荷ヤード3eは、管理会社2からの出荷指示又は製造施設4からの注文に応じて、ストックヤード3bに貯蔵されている出荷可能な原材料を製造施設4に出荷するため、一時的備蓄タンク、輸送する船やトラック等への積込み手段、その他、通常出荷に必要な装置や機器を有する出荷設備を備える。   The shipping yard 3e ships temporary raw materials stored in the stock yard 3b to the manufacturing facility 4 according to a shipping instruction from the management company 2 or an order from the manufacturing facility 4. Shipment equipment having equipment and equipment necessary for normal shipment is also provided.

管理・制御室3dは、上述のように、供給センター3全体を管理制御するとともに、ネットワークによる管理会社2との情報・連絡・指示等の授受に加え、製造施設4ともネットワークで繋がれ、製造施設4と緊密かつ迅速な連携が可能なように構成される。また、供給センター3が全国に複数箇所ある場合は、供給センター3同士の連携が可能となるようにも構成される。以上の他、付着水の多い原材料を乾燥するための乾燥装置、粒度を細かくするための粉砕機等を必要に応じて供給センター3内に設置しても良い。   As described above, the management / control room 3d manages and controls the entire supply center 3, and in addition to sending / receiving information / contacts / instructions to / from the management company 2 via the network, the management / control room 3d is also connected to the manufacturing facility 4 via the network. It is configured to allow close and quick cooperation with the facility 4. Further, when there are a plurality of supply centers 3 in the whole country, the supply centers 3 are also configured to be able to cooperate with each other. In addition to the above, a drying device for drying raw materials with much adhering water, a pulverizer for reducing the particle size, and the like may be installed in the supply center 3 as necessary.

製造施設
製造施設4は、管理会社2からの製造指示に従い、原則、供給センター3から購入した原材料を用いて混合型重量細骨材を製造し顧客に供給する機能を担う。製造施設4は、本発明の混合型重量細骨材を製造するのに必要な、2種以上の原材料を受け入れるための屋内貯蔵場又は貯蔵サイロ又は貯蔵タンクの1種以上と、各原材料の計量装置と、各原材料を混合して混合型重量細骨材を得るためのコンクリート練りミキサーとを少なくとも備えた施設であれば特に限定されない。尚、正確な配合・計量を効率良く行う上で、この施設に各原材料の付着水を測定するための水分測定装置を備わっていることは好ましい。以上の条件を満たす既存の施設の一つとして日本全国に点在する生コンクリート製造用プラントを備えた施設(以下、「生コンプラント」と略称する)がある。生コンプラントは遊休プラントが増えてきているので好適に利用できる。図1の例では、製造施設4は各地に点在する生コンプラント5(5A〜5C)で構成される。ここでは、供給センター3と生コンプラント5を分けて記載してあるが、両者が同一敷地内にあっても良い。例えば、供給センター3の敷地内に生コンプラント5Aがあり、生コンプラント5Bと生コンプラント5Cは別の箇所に各々単独で存在するなどである。各生コンプラント5は、管理会社2及び供給センター3とネットワークで接続され、管理会社2の営業部門2aからの製造指示を受け、供給センター3に必要な原材料を注文し、供給センター3から原材料の供給を受け、混合型重量細骨材を製造する。生コンプラント5Aと生コンプラント5Bと生コンプラント5Cの間もネットワークで繋がっており必要情報を共有している。製造する過程で、必要に応じて、原材料、試作品、製品について品質・性能試験を行う。試験設備を備えていない生コンプラント5は、供給センター3又は管理会社2の技術部門2bに試験依頼をする。生コンプラント5で製造された混合型重量細骨材は、各顧客に向けて出荷される。尚、生コンプラント5で製造された混合型重量細骨材を供給センター3に戻し、供給センター3で品質検査を行った上で各顧客に向けて出荷することもできる。
Manufacturing Facility The manufacturing facility 4 has a function of manufacturing mixed heavy fine aggregates using raw materials purchased from the supply center 3 and supplying them to customers in accordance with manufacturing instructions from the management company 2. The manufacturing facility 4 includes one or more indoor storage yard or storage silo or storage tank for receiving the two or more kinds of raw materials necessary for producing the mixed heavy fine aggregate of the present invention, and the weighing of each raw material. There is no particular limitation as long as the facility includes at least a device and a concrete kneading mixer for mixing each raw material to obtain a mixed heavy fine aggregate. In order to efficiently perform accurate blending and weighing, it is preferable that this facility is equipped with a moisture measuring device for measuring the water adhering to each raw material. One existing facility that satisfies the above conditions is a facility (hereinafter abbreviated as “raw concrete plant”) equipped with ready-mixed concrete manufacturing plants scattered throughout Japan. Since the number of idle plants is increasing, raw concrete plants can be used suitably. In the example of FIG. 1, the manufacturing facility 4 is composed of raw plants 5 (5A to 5C) scattered in various places. Here, the supply center 3 and the raw plant 5 are described separately, but both may be in the same site. For example, there is a raw plant 5A in the premises of the supply center 3, and the raw plant 5B and the raw plant 5C are individually present in different locations. Each raw plant 5 is connected to the management company 2 and the supply center 3 through a network, receives a manufacturing instruction from the sales department 2a of the management company 2, orders the necessary raw materials from the supply center 3, and supplies the raw materials from the supply center 3. Receives supply and produces mixed heavy aggregates. The living plant 5A, the living plant 5B, and the living plant 5C are also connected by a network and share necessary information. During the manufacturing process, quality and performance tests are performed on raw materials, prototypes, and products as necessary. The raw plant 5 that does not include the test facility makes a test request to the technical center 2b of the supply center 3 or the management company 2. The mixed heavy fine aggregate manufactured in the raw plant 5 is shipped to each customer. It is also possible to return the mixed heavy fine aggregate produced in the raw plant 5 to the supply center 3, perform quality inspection at the supply center 3, and ship to each customer.

上記例では、製造施設4として生コンプラントの例を示したが、上記設備の条件を満たしていれば、コンクリート二次製品工場、軽量骨材製造工場、製鉄所、製鋼所等のプラントを利用しても良い。   In the above example, an example of a raw plant is shown as the manufacturing facility 4, but if the conditions of the above equipment are satisfied, a plant such as a concrete secondary product factory, a lightweight aggregate manufacturing factory, an iron mill, a steel mill, etc. is used. May be.

図2は、上記生コンプラント5における本発明の混合型重量細骨材を製造するのに必要な設備の構成例を示す。この生コンプラント5は、生コンクリート製造施設として、元々粗骨材、細骨材、セメント、混和材等を受け入れるホッパー21と、受け入れたこれら粗骨材等を貯蔵サイロ23(23A〜23D)に搬送するための受入ベルトコンベア22、24と、貯蔵サイロ23から各材料を抽出するための抽出ベルトコンベア25、26と、混練水を貯留するヘッドタンク27と、抽出ベルトコンベア25、26で抽出された粗骨材、細骨材、セメント、混和材及び水を所定の配合割合となるように計量する計量器28と、計量された各原材料を混練するコンクリート練りミキサー(混合機)29を備える。   FIG. 2 shows an example of the configuration of equipment necessary for manufacturing the mixed heavy fine aggregate of the present invention in the raw concrete plant 5. This raw concrete plant 5 is a raw concrete manufacturing facility, originally a hopper 21 that receives coarse aggregate, fine aggregate, cement, admixture, etc., and these received coarse aggregates etc. are transported to storage silos 23 (23A-23D). Receiving belt conveyors 22 and 24, extraction belt conveyors 25 and 26 for extracting each material from the storage silo 23, a head tank 27 for storing kneaded water, and extraction belt conveyors 25 and 26. A measuring device 28 for measuring coarse aggregate, fine aggregate, cement, admixture and water so as to have a predetermined blending ratio and a concrete kneading mixer (mixer) 29 for kneading each measured raw material are provided.

上記設備に加え、生コンプラント5には、上記設備を制御するための制御盤等が配置された制御室を兼ねた事務所32と、水分測定装置、容量変更装置、粒度補正装置、砂分割比装置、容積保証自動設定装置、印字記録装置等を備えた試験室33が配置される。   In addition to the above equipment, the raw plant 5 includes an office 32 that also serves as a control room in which a control panel for controlling the equipment is arranged, a moisture measuring device, a capacity changing device, a particle size correcting device, a sand division ratio. A test chamber 33 equipped with a device, a volume assurance automatic setting device, a print recording device and the like is arranged.

生コンプラント5は遊休プラントであり、混合型重量細骨材の専用工場として再利用される。供給センター3から購入した各原材料は、ホッパー21と受入ベルトコンベア22、24を介して貯蔵サイロ23(23A〜23D)に搬入される。搬入された各原材料は、必要に応じて、試験室33で付着水分の水分測定等が行われる。その後、管理会社2の営業部門2aからの配合指示と試験室33での試験結果に基づき最終配合と各原材料の混合量が決められる。製造に必要な各原材料は抽出ベルトコンベア25、26を介して貯蔵サイロ23から抽出され計量器28に送られ計量される。計量された各原材料はコンクリート練りミキサー29に投入され混合される。上記過程で、抽出した各原材料中に固結物や異物が発見された場合は、適宜除去される。   The raw concrete plant 5 is an idle plant and is reused as a dedicated factory for mixed heavy fine aggregates. Each raw material purchased from the supply center 3 is carried into the storage silo 23 (23A to 23D) via the hopper 21 and the receiving belt conveyors 22 and 24. Each raw material carried in is subjected to a moisture measurement or the like of adhering moisture in the test chamber 33 as necessary. Thereafter, the final blending amount and the mixing amount of each raw material are determined based on the blending instruction from the sales department 2a of the management company 2 and the test result in the test room 33. Each raw material necessary for production is extracted from the storage silo 23 via the extraction belt conveyors 25 and 26, sent to the measuring device 28, and weighed. Each measured raw material is put into a concrete kneading mixer 29 and mixed. In the above process, if a solid or foreign matter is found in each extracted raw material, it is removed as appropriate.

生コンプラント5は、上記生コンクリート製造設備の他に、コンクリート練りミキサー29の後段に混合した混合型重量細骨材を出荷するためのホッパー30等の出荷設備を備え、ここから船やトラックで出荷される。   In addition to the above-mentioned ready-mixed concrete production facility, the ready-mixed plant 5 includes a shipping facility such as a hopper 30 for shipping the mixed heavy fine aggregate mixed in the subsequent stage of the concrete kneading mixer 29, and is shipped from here by ship or truck. Is done.

次に、上記構成を有する混合型重量細骨材の供給システム1の運用例について、図1及び図2を参照しながら詳細に説明する。   Next, an operation example of the mixed heavy fine aggregate supply system 1 having the above-described configuration will be described in detail with reference to FIGS. 1 and 2.

図1に示すように、管理会社2の営業部門2aは様々な顧客に対して営業活動をし、例えば、顧客Yから消波ブロック用重量細骨材の注文を受けると製品仕様を定め、技術部門2bに対して顧客Yからの注文に応じた配合設計を依頼する。技術部門2bは、顧客Yからの製品仕様あるいは顧客Yの注文に応じて作成した製品仕様と、供給センター3に保管されている各原材料の種類・物性データと貯蔵量(在庫)等を勘案して製品の配合設計を行う。尚、配合設計を行うに際し、必要に応じて、各原材料や試作品についての品質・性能試験を行う。また、在庫については供給センター3と連携をとり、在庫不足の場合は、適宜、産地から購入する。   As shown in FIG. 1, the sales department 2a of the management company 2 conducts sales activities with respect to various customers. The department 2b is requested to design the composition according to the order from the customer Y. The technical department 2b takes into consideration the product specifications from the customer Y or the product specifications prepared according to the customer Y's order, the type / property data of each raw material stored in the supply center 3, the storage amount (inventory), etc. To design products. In addition, when carrying out the compounding design, quality and performance tests are performed on each raw material and prototype as necessary. In addition, the inventory is coordinated with the supply center 3, and if the inventory is insufficient, it is purchased from the production area as appropriate.

技術部門2bでの配合設計は、上述のように、顧客Yからの製品仕様等に基づいて、供給センター3に保管されている各原材料の物性データ等及び各種試験結果を勘案して行うが、具体的には以下の要領で行う。   The compounding design in the technical department 2b is performed in consideration of the physical property data of each raw material stored in the supply center 3 and various test results based on the product specifications from the customer Y as described above. Specifically, the following procedure is performed.

表1は、銅スラグ、電気炉酸化スラグ、ミルスケール、転炉ダスト、ホットスカーフ、粒鉄等の各種原材料について、供給量、密度、粒形、粒度分布及び固結し易いか否かについて予めまとめたものである。例えば、原材料Cについては、供給量は多く、密度は5.0と高く、粒形は扁平であり重量細骨材として好ましくなく(悪く)、粒度分布は中程度乃至粗く、固結し難いという性状を有する。尚、同表において、網掛けをして強調した性状が重量細骨材として好ましいことを示している。このように、鉄鉱石の代替となる原材料は産業副産物を含めると種々あるが、いずれも供給量や物性の面で一長一短があり単独では品質の良い重量細骨材として使用し難い。   Table 1 shows in advance whether the supply amount, density, particle shape, particle size distribution, and whether or not it is easy to consolidate for various raw materials such as copper slag, electric furnace oxidation slag, mill scale, converter dust, hot scarf, and granular iron. It is a summary. For example, regarding the raw material C, the supply amount is large, the density is as high as 5.0, the particle shape is flat and unfavorable as a heavy aggregate (poor), the particle size distribution is moderate to coarse, and hard to consolidate. Has properties. In the same table, it is shown that the properties highlighted by shading are preferable as heavy aggregate. As described above, there are various raw materials that can replace iron ore, including industrial by-products. However, all of them have advantages and disadvantages in terms of supply amount and physical properties, and are difficult to use alone as high-quality heavy aggregates.

Figure 2009178849
Figure 2009178849

そこで、この点を解決すべく種々検討した結果、重量細骨材を混合型重量細骨材とし、混合する2種以上の各原材料として、比重(密度)、粒形、粒度分布、固結のし易さのいずれかの物性において補完関係にあるものを含むように原材料を選択すれば良いことを見出した。例えば、粒形については、丸くて粒形の良い原材料Dと角ばって粒形の悪い原材料Cを組み合わせたり、固結については、固結のし易い原材料Eと固結のし難い原材料Aを組み合わせるなどである。これらにより、製造する重量細骨材の品質を向上させることができる。また、混合型重量細骨材にすることによって品質・性能面でバリエーションの拡大が図り易くなるので、顧客の様々なニーズに対応し易くなる。   Therefore, as a result of various studies to solve this point, the heavy fine aggregate is a mixed heavy fine aggregate, and each of two or more raw materials to be mixed includes specific gravity (density), particle shape, particle size distribution, and consolidation. It has been found that the raw materials may be selected so as to include those having a complementary relationship in any physical property of ease. For example, the raw material D, which is round and has good particle shape, is combined with the raw material C, which is round and has poor particle shape. For consolidation, the raw material E which is easy to consolidate and the raw material A which is difficult to consolidate are used. And so on. By these, the quality of the heavy fine aggregate to manufacture can be improved. In addition, by using a mixed heavy fine aggregate, it becomes easy to expand variations in terms of quality and performance, so that it is easy to meet various needs of customers.

技術部門2bから配合設計結果に基づく配合指示を受けた営業部門2aは、好適な製造施設4(生コンプラント5)を選択し、供給センター3と製造施設4に配合指示(設計配合)を連絡する。また、供給センター3には出荷指示を、製造施設4には製造指示を行う。製造施設4はこれを受け、製造に必要な原材料を供給センター3に注文する。   The sales department 2a that has received a blending instruction based on the blending design result from the technical department 2b selects a suitable manufacturing facility 4 (raw plant 5) and notifies the supply center 3 and the manufacturing facility 4 of the blending instruction (design blending). . Further, a shipping instruction is given to the supply center 3 and a manufacturing instruction is given to the manufacturing facility 4. In response to this, the manufacturing facility 4 orders the raw materials necessary for manufacturing from the supply center 3.

供給センター3は、製造施設4から原材料の注文を受けると、各原材料は、ストックヤード3bから出荷ヤード3eへと移送され、製造施設4に対して出荷される。尚、各原材料は、原則、供給センター3から製造施設4に供給されるが、状況によっては産地から直接製造施設4に供給される場合もある。ここで、供給センター3と製造施設4とは、ネットワークを介して連絡しあうことで、原材料の物流効率を向上させることができるなど、混合型重量細骨材の生産から出荷までを一元的な管理の下で迅速かつ効率的に行う生産出荷体制をとることができる。   When the supply center 3 receives an order for raw materials from the manufacturing facility 4, each raw material is transferred from the stock yard 3 b to the shipping yard 3 e and shipped to the manufacturing facility 4. In principle, each raw material is supplied from the supply center 3 to the manufacturing facility 4. However, depending on the situation, the raw material may be supplied directly to the manufacturing facility 4. Here, the supply center 3 and the manufacturing facility 4 can communicate with each other via a network to improve the distribution efficiency of raw materials, and so on, from the production of mixed heavy fine aggregate to the shipment. It is possible to have a production and shipment system that is quickly and efficiently managed.

製造施設4は、営業部門2aからの製造指示を受けて配合指示に従って混合型重量骨材を製造する。尚、管理会社2(営業部門2a、技術部門2b)及び製造施設4(生コンプラント5A、5B、5C)同士もネットワークで繋がっており、当初の製造施設4でトラブルが生じた場合の対応やノウハウ提供等による製造支援も行えるようになっている。製造施設4(生コンプラント5)での混合型重量細骨材の製造は、具体的には以下の要領で行う。   The manufacturing facility 4 receives the manufacturing instruction from the sales department 2a and manufactures the mixed heavy aggregate according to the blending instruction. The management company 2 (sales department 2a, engineering department 2b) and the manufacturing facility 4 (raw plants 5A, 5B, 5C) are also connected to each other via a network. Manufacture support by provision etc. can also be performed. The production of the mixed heavy fine aggregate at the production facility 4 (raw plant 5) is specifically performed as follows.

生コンプラント5は、事務所(制御室)32において制御盤を操作することで、供給センター3から供給された各原材料をホッパー21より受け入れ、受け入れた原材料を受入ベルトコンベア22、24を介して貯蔵サイロ23(23A〜23D)に搬送して貯蔵する。貯蔵サイロ23で貯蔵することで、各原材料を湿気、雨水等の水分及び外気が遮断された空間で保管することができ、固結し易い原材料の固結を低減することができる。   The raw plant 5 operates the control panel in the office (control room) 32 to receive each raw material supplied from the supply center 3 from the hopper 21 and store the received raw material via the receiving belt conveyors 22 and 24. It conveys to the silo 23 (23A-23D) and stores it. By storing in the storage silo 23, each raw material can be stored in a space where moisture such as moisture and rainwater and outside air are blocked, and the consolidation of the raw materials that are easily consolidated can be reduced.

次に、納入した各原材料の付着水分測定や実績率測定を試験室33で行い性状を確認し、配合・混合量等に微調整が必要な場合は営業部門2aからの配合指示について補正を行い、各原材料の最終配合と混合量を決定する。製造準備が整ったところで、抽出ベルトコンベア25、26によって、貯蔵サイロ23から各原材料を抽出し、抽出した各原材料を最終配合と混合量に基づいて所定の割合となるように計量器28で計量する。この過程で、固結物や異物が発見されれば、適宜除去する。固結物や異物の発見は、スクリーンを通すことによって行っても良いし、人が目で監視して行っても良い。   Next, measure the moisture content and the actual rate of each raw material delivered in the test room 33 and check the properties. If fine adjustment is necessary for the blending / mixing amount, etc., correct the blending instructions from the sales department 2a. Determine the final mix and amount of each raw material. When the preparation for production is complete, the raw materials are extracted from the storage silo 23 by the extraction belt conveyors 25 and 26, and the extracted raw materials are weighed by the measuring device 28 so as to have a predetermined ratio based on the final blend and the mixing amount. To do. In this process, if a solid or foreign matter is found, it is removed as appropriate. The discovery of a solidified substance or a foreign object may be performed by passing through a screen, or may be performed by a person monitoring with eyes.

次に、計量された各原材料をコンクリート練りミキサー(混合機)29を用いて混合して混合型重量細骨材を製造する。コンクリート練りミキサー29は、通常の細骨材(砂)より比重の高い重量細骨材に対して既存の細骨材(砂)製造事業所にあるトロンメル等の設備より混合力が高く、各原材料が均一に混合された製品を製造することができるとともに、仮にミキサーに投入された原材料の中に固結物が含まれる場合でも軽度の固結であればこれを解砕することもできる。製造した混合型重量細骨材は、生コンプラント5より船あるいはトラックにより顧客に向けて出荷する。   Next, each measured raw material is mixed using a concrete kneading mixer (mixer) 29 to produce a mixed heavy fine aggregate. The concrete kneading mixer 29 has higher mixing power than heavy fine aggregate, which has a higher specific gravity than ordinary fine aggregate (sand), compared with existing equipment such as trommel in the fine aggregate (sand) manufacturing office. Can be produced, and even if the solid material is contained in the raw material put into the mixer, it can be crushed if it is lightly consolidated. The manufactured mixed heavy fine aggregate is shipped from the raw plant 5 to the customer by ship or truck.

尚、上記実施の形態においては、管理会社2、供給センター3及び製造施設4を各々別々の事業所とした場合について説明したが、一事業所においては管理会社2と供給センター3が一体化された事業所、供給センター3と製造施設4とが一体化された事業所、これら全てが一体化された事業所であっても良い。また、上記では、これら事業所間の連携を図るためのネットワークについて説明したが、原材料の購入から製品の出荷までの各事業所間の連携を図るために、この他の従来手段も適宜用いることは言うまでもない。また、本発明では、混合機をコンクリート練りミキサーに限定しているが、リボンミキサーなどの窯業製品の製造や建築・土木工事で使用される種々のミキサーでも良い。   In the above embodiment, the management company 2, the supply center 3, and the manufacturing facility 4 have been described as separate establishments. However, the management company 2 and the supply center 3 are integrated in one establishment. May be an establishment where the supply center 3 and the manufacturing facility 4 are integrated, or an establishment where all of these are integrated. In the above, the network for cooperation between these establishments has been described. However, other conventional means are also used as appropriate in order to achieve cooperation between each establishment from the purchase of raw materials to the shipment of products. Needless to say. Further, in the present invention, the mixer is limited to the concrete kneading mixer, but various mixers used in the manufacture of ceramic products such as a ribbon mixer and construction / civil engineering work may be used.

次に、本発明の混合型重量細骨材の製造方法について、請求項に沿って示す。   Next, the manufacturing method of the mixed heavy fine aggregate of the present invention will be described along the claims.

本発明の重量細骨材は、2種以上の原材料を混合してなる混合型重量細骨材である。混合する原材料の種類の数は特に限定されないが、通常、2〜3種類である。混合型重量細骨材とする理由は前述の通りであり、比重、粒形、粒度分布、固結のし易さのいずれかの物性において補完関係にあるものを含むものであることが好ましい。これら原材料としては、ミルスケール、電炉酸化スラグ、ホットスカーフ、重晶石、転炉スラグ、粒鉄、銅スラグ等が挙げられる。   The heavy fine aggregate of the present invention is a mixed heavy fine aggregate obtained by mixing two or more kinds of raw materials. The number of types of raw materials to be mixed is not particularly limited, but is usually 2 to 3 types. The reason why the mixed-weight fine aggregate is used is as described above, and preferably includes those having a complementary relationship in any of physical properties such as specific gravity, particle shape, particle size distribution, and ease of consolidation. Examples of these raw materials include mill scale, electric furnace oxidation slag, hot scarf, barite, converter slag, granular iron, copper slag and the like.

これらにおいて、銅スラグや電炉酸化スラグは比重が3.5程度であり低いのに対しミルスケールやホットスカーフや粒鉄は5.0以上であり高い。また、銅スラグやミルスケールは粒形が悪いのに対し、転炉スラグやホットスカーフや粒鉄は良い。また、銅スラグやミルスケールや粒鉄は比較的粗い径のものが多い粒度分布であるのに対し電炉酸化スラグや転炉スラグやホットスカーフは細かい径のものも含む粒度分布である。また、銅スラグや電炉酸化スラグやミルスケールや重晶石は固結し難いのに対し転炉スラグやホットスカーフや粒鉄は固結し易い。また、銅スラグ、重晶石、電炉酸化スラグ、ミルスケールは供給量が多いのに対しホットスカーフや粒鉄は少ない。従って、本発明の混合型重量細骨材を製造するに際し、これらの物性等を考慮し、補完関係にあるものを用いて製造するのが好ましい。   Among these, copper slag and electric furnace oxidation slag have a specific gravity of about 3.5 and are low, whereas mill scale, hot scarf, and granular iron are 5.0 or more and high. Also, copper slag and mill scale are poor in grain shape, whereas converter slag, hot scarf and grain iron are good. Copper slag, mill scale, and granular iron have a relatively large particle size distribution, whereas electric furnace oxidation slag, converter slag, and hot scarf have a particle size distribution that includes fine diameters. In addition, copper slag, electric furnace oxidation slag, mill scale, and barite are difficult to consolidate, whereas converter slag, hot scarf, and granular iron are easy to consolidate. In addition, copper slag, barite, electric furnace oxidation slag, and mill scale are supplied in large quantities, while hot scarves and granular iron are few. Therefore, when the mixed heavy fine aggregate of the present invention is manufactured, it is preferable to use a material having a complementary relationship in consideration of these physical properties.

例えば、ミルスケールとホットスカーフとを組み合わせれば、粒形が補完され品質向上が図れるとともに供給量も増加できる。また、ミルスケールと電炉酸化スラグを組み合わせて用いれば、粒形や粒度分布が補完されるとともに供給量も増加できる。同様に、ミルスケールと転炉スラグと粒鉄を組み合わせて用いれば、粒形、粒度分布が補完され品質向上が図れるとともに供給量も増加できる。   For example, when a mill scale and a hot scarf are combined, the particle shape is complemented, quality can be improved, and the supply amount can be increased. Moreover, if a mill scale and electric furnace oxidation slag are used in combination, the particle shape and particle size distribution can be complemented and the supply amount can be increased. Similarly, if a mill scale, converter slag, and granular iron are used in combination, the particle shape and particle size distribution can be complemented to improve quality and increase the supply amount.

特に、鉄系の原材料を用いるときは固結の問題を考慮する必要がある。転炉スラグやホットスカーフや粒鉄などの固結し易い原材料は、銅スラグ、電炉酸化スラグ、ミルスケール、重晶石などの固結し難い原材料と組み合わせて用いることが好ましい。これらの配合割合は特に限定されないが、例えば、ミルスケールとホットスカーフを組み合わせて用いる場合は、ホットスカーフ:ミルスケール=40:60〜30:70程度である。この範囲を外れると十分に固結防止ができなかったり、固結は防止できても粒形が悪くなって所望の流動性のある重量コンクリートが得られ難くなったりする。   In particular, when using iron-based raw materials, it is necessary to consider the problem of consolidation. Raw materials that are easily consolidated such as converter slag, hot scarf, and granular iron are preferably used in combination with raw materials that are difficult to consolidate such as copper slag, electric furnace oxidation slag, mill scale, and barite. These blending ratios are not particularly limited. For example, when a mill scale and a hot scarf are used in combination, the hot scarf: mill scale is about 40:60 to 30:70. If it is out of this range, the solidification cannot be sufficiently prevented, or even if the solidification can be prevented, the particle shape is deteriorated and it becomes difficult to obtain a heavy concrete having a desired fluidity.

本発明の混合型重量細骨材の製造は、特定の設備のある専用製造施設で行う。当該施設は、各原材料を受け入れるための屋内貯蔵場又は貯蔵サイロ又は貯蔵タンクの1種以上を備えている。このように貯蔵設備を限定するのは、各原材料が外気や風雨に曝されることによる劣化を防ぐためである。特に、固結し易い原材料に対しては、このような設備を用いることにより固結を防止できる。これらの設備においてさらに各原材料が高湿度の空気に触れないようにするために、空調管理をしたり、原材料の堆積物表面にシートを掛けたり蓋をしたりすることは好ましい。貯蔵サイロや貯蔵タンクの形状は特に限定されないが、原材料の堆積物表面と内部空間部との界面の面積を少なくするべく縦長形状のものが好ましい。尚、界面に固結層が形成されたとしても、これが蓋となって内部の原材料を保護するので、上記貯蔵設備において若干固結が形成されても固結部分を使用しなければ良いので問題にはならない。また、前述の通り、軽度の固結であれば、コンクリート練りミキサーで混合する際、解砕できる。   The mixed heavy fine aggregate of the present invention is manufactured in a dedicated manufacturing facility with specific equipment. The facility comprises one or more indoor storage or storage silos or storage tanks for receiving each raw material. The reason for limiting the storage facilities in this way is to prevent deterioration due to exposure of each raw material to outside air and wind and rain. In particular, for raw materials that are easily consolidated, consolidation can be prevented by using such equipment. In order to prevent the raw materials from coming into contact with high-humidity air in these facilities, it is preferable to perform air-conditioning management, cover sheets of raw materials with a sheet, or cover them. The shape of the storage silo or storage tank is not particularly limited, but a vertically long shape is preferable in order to reduce the area of the interface between the raw material deposit surface and the internal space. Even if a consolidated layer is formed at the interface, this serves as a lid to protect the internal raw materials, so even if a slight amount of consolidated is formed in the storage facility, it is not necessary to use the consolidated portion. It will not be. Further, as described above, if it is lightly consolidated, it can be crushed when mixed with a concrete kneading mixer.

また、当該施設は、各原材料を計量するための計量装置を備えている。計量装置は、従来から細骨材(砂)を計量するために用いられている装置や生コンプラントに備えられている計量装置であれば良い。   Moreover, the said facility is equipped with the measuring device for measuring each raw material. The measuring device may be a device conventionally used for measuring fine aggregate (sand) or a measuring device provided in a raw plant.

また、当該施設は、各原材料を混合して本発明の混合型重量細骨材を得るためのコンクリート練りミキサーを備えている。コンクリート練りミキサーは、本来、セメント、粗骨材、細骨材、混和材等に水を添加して混練しコンクリートを製造するためのものであるが、各重量細骨材原材料を混合し混合型重量細骨材を得るのに好適であることを見出した。   Moreover, the said facility is equipped with the concrete kneading mixer for mixing each raw material and obtaining the mixed type | mold heavy aggregate of this invention. Concrete mixer is originally intended to produce concrete by adding water to cement, coarse aggregate, fine aggregate, admixture, etc. and kneading them. It has been found that it is suitable for obtaining heavy fine aggregates.

本発明の混合型重量細骨材を得るためには、粒鉄等の比重が高く非常に硬い粉粒体が均一に混ざり耐磨耗性等の耐久性のある混合機が必要であるが、一般の粉粒体混合機にはこのような性能を満たすものはない。また、一般の砂混合機でも十分ではない。新たに製作するとなると高価なものとなりコストアップに繋がる。遊休のコンクリート練りミキサーは上記性能を満たすとともに再利用であるのでコストアップにはならない。以上の他、軽度の固結物が混入していたとしても解砕できるし、解砕されないものについては容易に除去できる。コンクリート練りミキサーには、パン型、傾動式、二軸式などがあるが、二軸式が好ましい。容量は特に限定されない。通常、生コンプラントに備えられている程度の容量であれば良い。   In order to obtain the mixed-type heavy fine aggregate of the present invention, it is necessary to have a mixer having a high specific gravity such as granular iron and a very hard powder and the like, and a durable mixer such as wear resistance. There is no general powder mixer that satisfies such a performance. A general sand mixer is not sufficient. New production will be expensive and will lead to increased costs. The idle concrete mixer does not increase the cost because it satisfies the above-mentioned performance and is reused. In addition to the above, even if a light solidified substance is mixed, it can be crushed and those that are not crushed can be easily removed. Concrete kneading mixers include a pan type, a tilting type, and a biaxial type, and a biaxial type is preferable. The capacity is not particularly limited. In general, the capacity may be as long as it is provided in the raw plant.

当該施設は、各原材料の付着水を測定するための水分測定装置を備えていることが好ましい。付着水が多いと混合し難く固結発生の原因になるので乾燥するなどしてできるだけ除去する必要がある。若干の付着水であれば問題にならないが、配合指示通りに混合するためには、水分測定を行い付着水分量を補正して計量する必要がある。水分測定装置としては、チャップマンフラスコなどが挙げられる。測定は、JIS A 1111「細骨材の表面水分率試験方法」に従って行われる。   It is preferable that the facility is equipped with a moisture measuring device for measuring the attached water of each raw material. If there is a lot of adhering water, it will be difficult to mix and cause caking, so it must be removed by drying as much as possible. A slight amount of adhering water is not a problem, but in order to mix according to the blending instructions, it is necessary to measure the water content and correct the adhering water amount for measurement. An example of the moisture measuring device is a Chapman flask. The measurement is performed according to JIS A 1111 “Method for testing surface moisture content of fine aggregate”.

当該施設は新たに建設されたものであっても良いが、前述の通り、全国に散在する生コンプラント(生コンクリート製造工場)には上記設備を満たすものが多いので、これの遊休プラントを重量細骨材の専用工場として再利用することは技術面でも経済面でも好適である。生コンプラントは通常の固定プラントの他、小規模の可動式プラントや現場設置プラントも、適宜、前記供給システムにおける中継基地として利用できる。   The facility may be newly constructed, but as mentioned above, there are many raw concrete plants (fresh concrete manufacturing factories) scattered throughout the country that satisfy the above facilities. Reusing as a dedicated aggregate factory is suitable for both technical and economic reasons. In addition to a normal fixed plant, a small-scale movable plant and an on-site plant can be used as a relay base in the supply system as appropriate.

本発明にかかる混合型重量細骨材の供給システムの一実施の形態の全体構成を示すフローチャートである。It is a flowchart which shows the whole structure of one Embodiment of the supply system of the mixed heavy fine aggregate concerning this invention. 図1の混合型重量細骨材の供給システムの生コンプラントの全体構成を示すフローチャートである。It is a flowchart which shows the whole structure of the raw plant of the supply system of the mixed heavy fine aggregate of FIG.

符号の説明Explanation of symbols

1 混合型重量細骨材の供給システム
2 管理会社
2a 営業部門
2b 技術部門
3 重量骨材供給センター
3a 受入ヤード
3b ストックヤード
3c 試験室
3d 管理・制御室
3e 出荷ヤード
4 製造施設
5 生コンプラント(5A〜5C)
21 ホッパー
22 受入ベルトコンベア
23(23A〜23D) 貯蔵サイロ
24 受入ベルトコンベア
25 抽出ベルトコンベア
26 抽出ベルトコンベア
27 ヘッドタンク
28 計量器
29 コンクリート練りミキサー
30 ホッパー
31 重量骨材製造プラント
32 事務所(制御室)
33 試験室
1 Supply system for mixed heavy fine aggregate 2 Management company 2a Sales department 2b Technical department 3 Heavy aggregate supply center 3a Receiving yard 3b Stock yard 3c Test room 3d Management / control room 3e Shipping yard 4 Manufacturing facility 5 Raw plant (5A ~ 5C)
21 Hopper 22 Receiving belt conveyor 23 (23A to 23D) Storage silo 24 Receiving belt conveyor 25 Extracting belt conveyor 26 Extracting belt conveyor 27 Head tank 28 Meter 29 Concrete mixer 30 Hopper 31 Heavy aggregate manufacturing plant 32 Office (control room) )
33 Test room

Claims (7)

2種以上の原材料を混合して混合型重量細骨材を製造する方法であって、
前記混合型重量細骨材の製造を、少なくとも前記各原材料を受け入れるための屋内貯蔵場又は貯蔵サイロ又は貯蔵タンクの1種以上と、前記各原材料の計量装置と、前記各原材料を混合して混合型重量細骨材を得るためのコンクリート練りミキサーとを備えた製造施設で行うことを特徴とする混合型重量細骨材の製造方法。
A method of producing a mixed heavy fine aggregate by mixing two or more raw materials,
Production of the mixed heavy fine aggregate is performed by mixing at least one kind of indoor storage or storage silo or storage tank for receiving the raw materials, the raw material measuring device, and the raw materials. A method for producing a mixed-type heavy fine aggregate, characterized in that it is carried out in a production facility equipped with a concrete kneading mixer for obtaining a heavy-weight fine aggregate.
前記製造施設は、さらに、前記各原材料の付着水を測定するための水分測定装置を備えた施設であることを特徴とする請求項1に記載の混合型重量細骨材の製造方法。   The method for producing a mixed heavy fine aggregate according to claim 1, wherein the manufacturing facility is a facility further comprising a moisture measuring device for measuring water adhering to the raw materials. 前記製造施設が生コンクリート製造用プラントを備えた施設であることを特徴とする請求項1又は請求項2に記載の混合型重量細骨材の製造方法。   The method for producing a mixed heavy fine aggregate according to claim 1 or 2, wherein the production facility is a facility provided with a plant for producing ready-mixed concrete. 請求項1乃至3のいずれかに記載の混合型重量細骨材の製造方法において、
混合する2種以上の各原材料は、比重、粒形、粒度分布、固結のし易さのいずれかの物性において補完関係にあるものを含むものであることを特徴とする混合型重量細骨材の製造方法。
In the manufacturing method of the mixed heavy fine aggregate according to any one of claims 1 to 3,
Each of the two or more kinds of raw materials to be mixed includes those having a complementary relationship in any of physical properties of specific gravity, particle shape, particle size distribution, and ease of consolidation. Production method.
前記物性が固結のし易さであり、前記補完関係にあるものが、固結し易い原材料と固結し難い原材料であることを特徴とする請求項4に記載の混合型重量細骨材の製造方法。   5. The mixed heavy fine aggregate according to claim 4, wherein the physical property is easy to consolidate, and the complementary relationship is a raw material that is easy to consolidate and a raw material that is difficult to consolidate. Manufacturing method. 混合型重量細骨材の生産出荷体制であって、
一元的な管理の下で異なる複数の産地からの種々の原材料を受け入れて保管するためのストックヤードを備える重量骨材供給センターと、
前記重量骨材供給センターとネットワークで繋がった請求項1乃至3のいずれかに記載の製造施設とを一箇所あるいは複数箇所に設けてなる混合型重量細骨材の生産出荷体制。
Production and shipment system for mixed heavy fine aggregates,
A heavy aggregate supply center with a stockyard for receiving and storing various raw materials from different sources under centralized management;
A production / shipment system for a mixed heavy fine aggregate comprising the manufacturing facility according to any one of claims 1 to 3 connected to the heavy aggregate supply center through a network.
請求項6に記載の生産出荷体制を用いた混合型重量細骨材の供給システムであって、
顧客からの製品仕様あるいは顧客の注文に応じて作成した製品仕様と、前記重量骨材供給センターに保管されている各原材料の物性データと貯蔵量とにより製品の配合設計を行い、前記配合設計に基づく製品製造を前記製造施設に指示し、前記製品製造に必要な各原材料を前記重量骨材供給センターから前記製造施設に供給し、前記製造施設で混合型重量骨材の製品製造をして前記顧客に供給することを特徴とする混合型重量細骨材の供給システム。
A mixed heavy fine aggregate supply system using the production and shipping system according to claim 6,
Product formulation is designed based on product specifications from customers or product specifications created according to customer orders, physical property data of each raw material stored in the heavy aggregate supply center, and storage amount. Instructing the manufacturing facility to manufacture the product, supplying each raw material necessary for the product manufacturing from the heavy-weight aggregate supply center to the manufacturing facility, and manufacturing the mixed heavy-weight aggregate product at the manufacturing facility A mixed heavy fine aggregate supply system characterized by being supplied to customers.
JP2008017253A 2008-01-29 2008-01-29 Method for manufacturing mixed type weight fine aggregate, production/shipment system, and supply system Withdrawn JP2009178849A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493980A (en) * 2014-12-03 2015-04-08 山东连银山环保建材有限公司 Aggregate and concrete production equipment and aggregate and concrete production process
JP2019524505A (en) * 2016-08-17 2019-09-05 サロジ ヴァニジャ プライベート リミテッド System and process for producing dry mix construction materials with improved engineering properties
WO2020121397A1 (en) * 2018-12-11 2020-06-18 太平洋セメント株式会社 Method for distributing pellet-form wood biomass fuel, distribution base for pellet-form wood biomass fuel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493980A (en) * 2014-12-03 2015-04-08 山东连银山环保建材有限公司 Aggregate and concrete production equipment and aggregate and concrete production process
JP2019524505A (en) * 2016-08-17 2019-09-05 サロジ ヴァニジャ プライベート リミテッド System and process for producing dry mix construction materials with improved engineering properties
WO2020121397A1 (en) * 2018-12-11 2020-06-18 太平洋セメント株式会社 Method for distributing pellet-form wood biomass fuel, distribution base for pellet-form wood biomass fuel

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