JP2014152069A - Apparatus for preparing starting material - Google Patents

Apparatus for preparing starting material Download PDF

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JP2014152069A
JP2014152069A JP2013022675A JP2013022675A JP2014152069A JP 2014152069 A JP2014152069 A JP 2014152069A JP 2013022675 A JP2013022675 A JP 2013022675A JP 2013022675 A JP2013022675 A JP 2013022675A JP 2014152069 A JP2014152069 A JP 2014152069A
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raw material
material mixture
mixing
supplied
cement
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Hirotaka Matsui
洋高 松井
Hiroaki Sugimoto
博亮 杉本
Fuminori Misumi
史教 三隅
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Ube Corp
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Ube Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for preparing a starting material, in which detection of chemical components of the starting material to be supplied to a cement production facility is completed to improve the adjustment accuracy of clinker quality.SOLUTION: The apparatus for preparing the starting material comprises: mixing means for mixing a plurality of raw materials with one another to obtain a raw material mixture; storage means for temporarily storing the raw material mixture supplied from the mixing means; a cement production facility for firing the raw material mixture supplied from the storage means; and sampling means which is arranged between the mixing means and the storage means and used for sampling the raw material mixture.

Description

本発明は、セメント製造設備における原料調合装置に関する。   The present invention relates to a raw material blending apparatus in a cement manufacturing facility.

従来、特許文献１にあっては、セメントクリンカの品質管理上、石灰質原料および粘土系原料等をサンプリングして化学成分を検出し、検出された化学成分の変動に合わせて各原料の混合比を変更している。また特許文献２にあっては、焼成されたクリンカの化学分析値に基づいて粘土系原料をセメント製造設備の窯尻、仮焼炉、プレヒータ等に投入し、クリンカの品質を調整している。なお、特許文献２において窯尻、仮焼炉、プレヒータに投入される粘土系原料は、予め混合された石灰質原料と粘土系原料の混合原料とは別途供給されるものである。   Conventionally, in Patent Document 1, for the quality control of cement clinker, a calcareous raw material and a clay-based raw material are sampled to detect a chemical component, and the mixing ratio of each raw material is set in accordance with the detected variation of the chemical component. It has changed. Further, in Patent Document 2, the quality of the clinker is adjusted by introducing a clay-based raw material into a kiln bottom, a calcining furnace, a preheater, or the like of a cement manufacturing facility based on a chemical analysis value of the baked clinker. In addition, the clay-type raw material thrown into a kiln bottom, a calcining furnace, and a preheater in patent document 2 is supplied separately from the mixed raw material of the calcareous raw material and clay-type raw material mixed beforehand.

特開平１１−１８０７４２号公報JP-A-11-180742 特許第４８８３８７９号Patent No. 4888879

しかしながら各原料の化学成分の検出には時間を要するため、化学成分を検出する前に原料がセメント製造設備に供給・焼成されてしまうおそれがあるが、特許文献１にはこの問題点および解決手段については記載されておらず、混合比が変更されないまま原料がセメント製造設備に供給されてしまうおそれがあった。また特許文献２にあっては、クリンカの化学分析値に基づいて粘土系原料を投入して品質を調整しているが、クリンカの化学分析にも一定の時間が必要となる。そのため、クリンカの分析値を検出してから粘土系原料を投入するまでにタイムラグが生じ、このタイムラグによりクリンカ品質の調整が遅れてしまう、という問題がある。
本発明はこの問題を解決するためになされたものであり、その目的とするところは、原料がセメント製造設備に供給される前に化学成分の検出を完了させることで、クリンカ品質の調整精度を向上させた原料調合装置を提供することにある。 However, since it takes time to detect the chemical component of each raw material, there is a possibility that the raw material may be supplied and fired to the cement manufacturing facility before detecting the chemical component. Is not described, and the raw material may be supplied to the cement manufacturing facility without changing the mixing ratio. Further, in Patent Document 2, the quality is adjusted by introducing clay-based raw materials based on the clinker chemical analysis value, but a certain amount of time is also required for the clinker chemical analysis. Therefore, there is a problem that a time lag occurs between the detection of the clinker analysis value and the addition of the clay-based raw material, and the adjustment of the clinker quality is delayed by this time lag.
The present invention has been made to solve this problem, and the object of the present invention is to complete the detection of chemical components before the raw material is supplied to the cement manufacturing facility, thereby improving the adjustment accuracy of the clinker quality. The object is to provide an improved raw material blending apparatus.

本発明では、複数の原料を混合して原料混合体とする混合手段と、前記混合手段から供給された前記原料混合体を一時貯蔵する貯蔵手段）と、前記貯蔵手段から供給された前記原料混合体を焼成するセメント製造設備と、前記混合手段と前記貯蔵手段との間に設けられ、前記原料混合体のサンプリングを行うサンプリング手段とを備えることを特徴とする。
を特徴とする。 In the present invention, a mixing means for mixing a plurality of raw materials to form a raw material mixture, a storage means for temporarily storing the raw material mixture supplied from the mixing means), and the raw material mixing supplied from the storage means A cement production facility for firing the body, and a sampling means provided between the mixing means and the storage means for sampling the raw material mixture are provided.
It is characterized by.

よって、セメント製造設備に供給される前に原料の化学成分検出を完了させることで、クリンカ品質の調整精度を向上させた原料調合装置を提供できる。   Therefore, by completing the chemical component detection of the raw material before it is supplied to the cement manufacturing facility, it is possible to provide a raw material blending apparatus with improved clinker quality adjustment accuracy.

本願の原料調合装置を示す図である。It is a figure which shows the raw material preparation apparatus of this application.

［全体構成］
図１は本願の原料調合装置を示す図であり、セメント製造設備１、原料ミル２、ブレンディングサイロ３（混合手段）、ストレージサイロ４（貯蔵手段）、サンプリング手段５を有する。原料ミル２で粉砕された原料はブレンディングサイロ２において所定の割合に混合され、原料混合体としてストレージサイロ４に一時貯蔵される。ストレージサイロ４において所定時間貯蔵された後、原料混合体はセメント製造設備１に供給される。 [overall structure]
FIG. 1 is a view showing a raw material blending apparatus of the present application, which includes a cement production facility 1, a raw material mill 2, a blending silo 3 (mixing means), a storage silo 4 (storage means), and a sampling means 5. The raw material pulverized by the raw material mill 2 is mixed at a predetermined ratio in the blending silo 2 and temporarily stored in the storage silo 4 as a raw material mixture. After being stored in the storage silo 4 for a predetermined time, the raw material mixture is supplied to the cement manufacturing facility 1.

セメント製造設備１は、セメント原料を予熱・仮焼するサスペンションプレヒータ１１と、クリンカを焼成するロータリーキルン１２とを備える。サスペンションプレヒータ１１は複数のサイクロンＣと仮焼炉２１とを有し、ロータリーキルン１２からの排ガスの熱と仮焼炉２１からの熱とを利用してセメント原料の予熱・仮焼を行う。サイクロンＣの上側には原料供給部１３が設けられており、ここから原料混合体が投入される。   The cement manufacturing facility 1 includes a suspension preheater 11 that preheats and calcines cement raw material, and a rotary kiln 12 that fires clinker. The suspension preheater 11 has a plurality of cyclones C and a calcining furnace 21, and preheats and calcines the cement raw material using the heat of the exhaust gas from the rotary kiln 12 and the heat from the calcining furnace 21. A raw material supply unit 13 is provided on the upper side of the cyclone C, and a raw material mixture is supplied from here.

［原料混合体のサンプリング］
セメント原料となる原料混合体の調合制御は、原料ミル２出口で原料混合体の一部を抽出して化学成分を分析し、調合制御を行っている。これにより、原料混合体における化学成分（セメント原料諸率）を調整している。
更に、実際に焼成されるセメント原料諸率（ＨＭ・ＳＭ・ＩＭ）の確認を行うため、ブレンディングサイロ３とストレージサイロ４との間にはサンプリング手段５が設けられている。このサンプリング手段５はブレンディングサイロ３にて調合された原料混合体の一部を抽出して化学成分を分析するものである。 [Sampling of raw material mixture]
The mixing control of the raw material mixture used as a cement raw material is performed by extracting a part of the raw material mixture at the outlet of the raw material mill 2 and analyzing the chemical components. Thereby, the chemical component (the various ratios of cement raw materials) in the raw material mixture is adjusted.
Furthermore, a sampling means 5 is provided between the blending silo 3 and the storage silo 4 in order to confirm the various ratios of cement raw material (HM, SM, IM) that are actually fired. This sampling means 5 extracts a part of the raw material mixture prepared by the blending silo 3 and analyzes chemical components.

一般的に原料の化学分析には相当の時間を要するため、サンプリング手段５をストレージサイロ４とセメント製造設備１との間に設けた場合、化学成分の分析が終了しないうちに原料混合体がセメント製造設備１に供給されてしまうおそれがある。その場合、原料混合体の調合制御値と実際の化学成分との誤差が把握されないままセメントクリンカが焼成され、品質管理に問題をきたすおそれがある。   In general, since chemical analysis of raw materials takes a considerable amount of time, when the sampling means 5 is provided between the storage silo 4 and the cement manufacturing facility 1, the raw material mixture is mixed with cement before the analysis of chemical components is completed. There is a risk of being supplied to the manufacturing facility 1. In that case, the cement clinker may be fired without knowing an error between the mixing control value of the raw material mixture and the actual chemical component, which may cause a problem in quality control.

これに対し本願では、サンプリング手段５をブレンディングサイロ３とストレージサイロ４の間に設けたことで、化学成分を分析中の原料混合体をストレージサイロ４で一時貯留することが可能となり、原料混合体の化学成分を把握した後でセメント製造設備１に供給することができる。よって、化学成分の判明しない原料混合体がセメント製造設備１に供給されることが回避され、焼成されたセメントクリンカの品質管理が容易となる。   In contrast, in the present application, by providing the sampling means 5 between the blending silo 3 and the storage silo 4, the raw material mixture whose chemical components are being analyzed can be temporarily stored in the storage silo 4, and the raw material mixture It is possible to supply the cement manufacturing facility 1 after grasping the chemical components. Therefore, it is avoided that the raw material mixture whose chemical component is unknown is supplied to the cement manufacturing facility 1, and the quality control of the fired cement clinker becomes easy.

また、仮焼炉２１にはセメント原料諸率を制御する調整材を供給する調整材供給設備２２が設けられている。サンプリング手段５により検出された原料混合体の化学成分に基づき、この調整材供給設備２２から仮焼炉２１に調整材を供給する。その際、調整材の供給量を制御することで、ロータリーキルン１２に導入される原料の化学成分を制御し、焼成されたクリンカの品質を制御可能とするものである。調整材としては石炭灰が好ましい。   Further, the calcining furnace 21 is provided with an adjusting material supply facility 22 for supplying an adjusting material for controlling various ratios of cement raw materials. Based on the chemical composition of the raw material mixture detected by the sampling means 5, the adjusting material is supplied from the adjusting material supply facility 22 to the calcining furnace 21. At that time, by controlling the supply amount of the adjusting material, the chemical components of the raw material introduced into the rotary kiln 12 are controlled, and the quality of the baked clinker can be controlled. Coal ash is preferable as the adjusting material.

１ セメント製造設備
２ 原料ミル
３ ブレンディングサイロ（混合手段）
４ ストレージサイロ（貯蔵手段）
５ サンプリング手段 1 Cement production facility 2 Raw material mill 3 Blending silo (mixing means)
4 Storage silos (storage means)
5 Sampling means

Claims (2)

複数の原料を混合して原料混合体とする混合手段と、
前記混合手段から供給された前記原料混合体を一時貯蔵する貯蔵手段と、
前記貯蔵手段から供給された前記原料混合体を焼成するセメント製造設備と、
前記混合手段と前記貯蔵手段との間に設けられ、前記原料混合体のサンプリングを行うサンプリング手段と
を備えることを特徴とする原料調合装置。 A mixing means for mixing a plurality of raw materials to form a raw material mixture;
Storage means for temporarily storing the raw material mixture supplied from the mixing means;
Cement manufacturing equipment for firing the raw material mixture supplied from the storage means;
A raw material blending apparatus comprising: a sampling means that is provided between the mixing means and the storage means and performs sampling of the raw material mixture. 請求項１に記載の原料調合装置において、
前記セメント製造設備に、前記原料混合体の化学成分を制御するための調整材を供給する調整材供給手段を設けたこと
を特徴とする原料調合装置。 In the raw material preparation apparatus according to claim 1,
The raw material blending apparatus, wherein the cement manufacturing facility is provided with an adjustment material supply means for supplying an adjustment material for controlling a chemical component of the raw material mixture.
JP2013022675A 2013-02-07 2013-02-07 Apparatus for preparing starting material Pending JP2014152069A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220069594A (en) 2020-11-20 2022-05-27 주식회사 삼표시멘트 System of manufacturing clinker using dry type coal-ash

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51133319A (en) * 1975-05-16 1976-11-19 Hitachi Ltd Apparatus for preparation of raw materials for cement
JP2004331473A (en) * 2003-05-12 2004-11-25 Taiheiyo Cement Corp Method of producing cement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51133319A (en) * 1975-05-16 1976-11-19 Hitachi Ltd Apparatus for preparation of raw materials for cement
JP2004331473A (en) * 2003-05-12 2004-11-25 Taiheiyo Cement Corp Method of producing cement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220069594A (en) 2020-11-20 2022-05-27 주식회사 삼표시멘트 System of manufacturing clinker using dry type coal-ash

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