EP1646592A2 - Procede et dispositif de fabrication de ciment - Google Patents

Procede et dispositif de fabrication de ciment

Info

Publication number
EP1646592A2
EP1646592A2 EP04739842A EP04739842A EP1646592A2 EP 1646592 A2 EP1646592 A2 EP 1646592A2 EP 04739842 A EP04739842 A EP 04739842A EP 04739842 A EP04739842 A EP 04739842A EP 1646592 A2 EP1646592 A2 EP 1646592A2
Authority
EP
European Patent Office
Prior art keywords
roller mill
feature
mill
sulfate
cement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04739842A
Other languages
German (de)
English (en)
Inventor
Otto Jung
York Reichardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebr Pfeiffer AG
Original Assignee
Gebr Pfeiffer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebr Pfeiffer AG filed Critical Gebr Pfeiffer AG
Publication of EP1646592A2 publication Critical patent/EP1646592A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
    • C04B22/142—Sulfates
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/48—Clinker treatment
    • C04B7/52—Grinding ; After-treatment of ground cement
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the invention relates to methods for producing cement according to the preamble of claim 1. It also relates to devices for carrying out the method.
  • DD-PS 201 137 From DD-PS 201 137 a method of belite-rich cement with the addition of sulfatic rock materials is known.
  • the task was pursued to achieve effective cooling of the Belit clinker and to improve its inhibibility. This was achieved by adding sulphate-containing rocks with a grain diameter ⁇ 10 mm and in an amount of up to 20% in the clinker cooling zone at a medium cooling gradient of the clinker between the firing temperature and 800 ° C.
  • Another method for producing cement is known from DE 692 03 096 T.
  • it is proposed to add at least a part of the gypsum required for cement production to the clinker in the last section of the clinker cooler, which is the coldest section of the cooler.
  • the amount of gypsum added to the clinker cooler should be less than or equal to the smallest amount of gypsum required in the finished cement.
  • All three publications have in common that the sulphate-containing material, which is responsible for the targeted change of the cement properties, is added to the still hot cement clinker in order to cool the cement kinker faster without additional energy costs and at the same time to drain and / or partially caffeine the suifate-containing material to reach.
  • the water solubility of the sulfate carrier is influenced by drainage. This increases from anhydrite via dihydrate to hemihydrate.
  • the degree of drainage of the sulfate carrier has a direct influence on the initial and final strength as well as on the setting speed of the concrete made with such a cement.
  • the cement mill is only heated to the temperatures mentioned for the purpose of drying and / or calcining the sulfate carrier, which is present in an amount of less than 10%. is far too complex and expensive. For this reason, many cement manufacturers have begun to buy the sulfate carrier in partially watered form, for example from the production of gypsum fiber boards, and to grind it together with the cement clinker in the cement mill without additional heating. However, the procurement and storage of the partially dewatered gypsum is time, cost and energy consuming. It is also not available everywhere and not always in sufficient quantities.
  • the present invention is therefore based on the object of specifying a method for producing cement, in the implementation of which the sulfate carrier can be metered exactly with regard to the degree of drainage and / or calcination and with regard to the grain size and quantity.
  • the present invention is based on a combined operation of a conventional, unheated roller mill for cement production with a separate system in which only the sulfate carrier is brought to the desired degree of dewatering.
  • This separate system is considerably smaller and can therefore be heated with little energy expenditure, for which purpose the exhaust gases from the cement clinker cooler can preferably be used. Thanks to the combined operation, all facilities for dedusting and intermediate storage of the sulfate carrier are also eliminated.
  • the sulfate-containing material is conveyed pneumatically from the separate system into the roller mill or into a classifier of the roller mill circuit. All you need is a pipe.
  • the sulfate carrier can also be pre-shredded in the separate plant.
  • the desired degree of calcination is advantageously set via the temperature of the hot gas in the separate system or during the pneumatic transport from the separate system to the mill and / or via the residence time of the sulfate carrier in the separate system.
  • the method according to the invention is particularly suitable for producing Portland cement.
  • the present invention also relates to devices for carrying out the composite process. This object is achieved by a device with the features of claim 8.
  • the separate plant for drying and calcining consists of a drum.
  • a riser reactor a fluidized bed reactor or a heated chute can be used, depending on the available resources.
  • sulfate carrier is also to be ground, hammer mills, roller bowl mills, ball ring mills or the like are suitable as a separate system.
  • the cement can be cooled by supplying cooling air or ambient air.
  • the amount of cooling air can be chosen to be much larger than the amount of gas required for drying or dewatering the sulfate rock in the separate system.
  • a further energy saving can be achieved in that, according to an embodiment of the invention, the roller mill has an external conveyor circuit for the semolina.
  • the blower for the process gas of the roller mill is a suction blower.
  • the separate system is connected to the roller mill via a pneumatic conveyor line.
  • the figure shows purely schematically a plant for the production of cement using a roller mill 5, the cement clinker 1 is metered in via a metering belt 3 and via a rotary valve 4.
  • the cement mill 5 is equipped with an external conveyor 6 for the semolina.
  • Dry additives 2 also enter mill 5 via metering belt 3 and rotary valve 4.
  • the cement flour ground in the cement mill 5 is filtered out of the mill gas in a filter or cyclone 7 and can be drawn off via a rotary valve 9.
  • the mill gas is generated in a suction fan 8.
  • the sulfate carrier which can be in a wide variety of forms, for example in the form of FGD gypsum, in the form of sulfate-containing rock or in any other form, is stored in a silo 11, from where it arrives in a separate plant 10.
  • the sulfate carrier 11 is dewatered and calcined to the desired degree.
  • the system 10 is supplied with hot gas from a hot gas generator 13.
  • the cement clinker cooler for example, can be considered as a hot gas generator.
  • Moist aggregates 12 can be dried in the separate system 10 before they reach the cement mill 5.
  • sulfate carriers 11 and additives 12 can also be crushed if necessary.
  • the dewatered and optionally comminuted material passes via a pneumatic conveying line 14 into the roller mill 5, where cement clinker, additives 2, 12 and sulfate carriers are ground together to a fine flour.
  • the suction fan 8 can provide the process gases for the mill 5 and the separate system 10 as well as the transport gas in the pipeline 14, which results in particularly economical operation.
  • the size of the separate installation 10 is correspondingly small.
  • the amount of hot gas required for dewatering and / or calcining the sulfate carrier 11 is also small. Therefore, when adding Cooling air, e.g. B. ambient air, the cement in the cement mill can also be specifically cooled. Due to the direct conveyance of the dewatered and possibly crushed sulfate carrier, the otherwise usual filters and silos are no longer required. At the same time, the sulfate carrier is obtained in a precisely controllable particle size and, above all, in an exactly meterable amount, so that the cement flour ground in the cement mill 5 has a constant and precisely defined quality.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

L'invention concerne un procédé de fabrication de ciment (9) consistant à broyer du clinker (1), un matériau sulfaté (11), et éventuellement d'autres constituants (2, 12) ensemble dans un broyeur à rouleaux (4) de manière à obtenir une finesse équivalente à celle de la farine. Le matériau sulfaté (11) est chauffé, déshydraté et calciné à un degré voulu dans un dispositif séparé (10), puis directement acheminé vers le broyeur à rouleaux (5) et broyé dans celui-ci avec les autres constituants.
EP04739842A 2003-07-23 2004-06-11 Procede et dispositif de fabrication de ciment Withdrawn EP1646592A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333361A DE10333361A1 (de) 2003-07-23 2003-07-23 Verfahren und Vorrichtung zum Herstellen von Zement
PCT/EP2004/006356 WO2005019129A2 (fr) 2003-07-23 2004-06-11 Procede et dispositif de fabrication de ciment

Publications (1)

Publication Number Publication Date
EP1646592A2 true EP1646592A2 (fr) 2006-04-19

Family

ID=34042025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739842A Withdrawn EP1646592A2 (fr) 2003-07-23 2004-06-11 Procede et dispositif de fabrication de ciment

Country Status (8)

Country Link
US (1) US20070278333A1 (fr)
EP (1) EP1646592A2 (fr)
JP (1) JP2006528123A (fr)
CN (1) CN100429171C (fr)
DE (1) DE10333361A1 (fr)
EA (1) EA007418B1 (fr)
MX (1) MXPA06000872A (fr)
WO (1) WO2005019129A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195268A (zh) * 2015-09-18 2015-12-30 江苏融达新材料股份有限公司 一种立磨机粉磨锂渣、矿渣复合粉的生产方法
CN105396673A (zh) * 2015-09-18 2016-03-16 江苏融达新材料股份有限公司 一种立磨机粉磨镍铁渣、钢渣复合粉生产方法

Families Citing this family (16)

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SE527086C2 (sv) * 2004-05-13 2005-12-20 Procedo Entpr Etablissement Processsystem för framställning av en komposit av cementitmaterial med reducerade koldioxidemissioner
US7591440B2 (en) * 2004-08-13 2009-09-22 Invensys Systems, Inc. Methods and systems for cement finishing mill control
CN102575901A (zh) * 2009-10-07 2012-07-11 Fl史密斯公司 用于制造水泥的方法和设施
DE102012020160B4 (de) 2012-10-13 2016-05-12 Khd Humboldt Wedag Gmbh Verfahren zur Herstellung von Zement
EA035573B1 (ru) 2013-02-18 2020-07-09 Мустафа Озсют Обработанные при низких температурах сульфаты кальция для быстротвердеющих цементов и общего применения
DE102013019840A1 (de) * 2013-11-26 2015-05-28 Khd Humboldt Wedag Gmbh Verfahren zur Herstellung von Zement
CN104437808A (zh) * 2014-12-12 2015-03-25 徐州中矿大贝克福尔科技股份有限公司 一种超湿煤矸石和黄土复合预处理设施和工艺
EP3322534B2 (fr) 2015-07-16 2023-10-18 Loesche GmbH Procédé et agencement pour traitement et activation d'une matière première
CN108787045B (zh) * 2018-08-01 2023-12-12 河南黎明重工科技股份有限公司 一种流化功能的立磨进料溜槽装置
DE102018220390A1 (de) * 2018-11-28 2020-05-28 Thyssenkrupp Ag Verfahren zur gezielten Trocknung von Sulfaten mittels einer Vertikalmühle
CN109876886B (zh) * 2019-03-27 2020-09-01 太原金圆水泥有限公司 一种水泥熟料生产用粉磨设备
EP3909682B1 (fr) 2020-05-14 2022-04-06 Gebr. Pfeiffer SE Procédé et broyeur à rouleaux permettant l'activation thermomécanique d'un mélange d'argiles
CN113522739B (zh) * 2021-07-20 2022-12-27 安徽长丰海螺水泥有限公司 一种水泥高效选粉工艺方法及选粉系统
CN113976254B (zh) * 2021-10-20 2023-01-06 常州市永祥化工有限公司 一种硫铁矿制酸生产用焙烧炉及节能方法
DE102021129323A1 (de) * 2021-11-11 2023-05-11 Khd Humboldt Wedag Gmbh Fördervorrichtung für eine Anlage zur Herstellung von Zement
CN114289163B (zh) * 2021-12-31 2023-08-29 河南黎明重工科技股份有限公司 基于立式辊磨机的钠基膨润土加工方法和系统

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DE3915432C2 (de) * 1989-05-11 1996-05-09 Kloeckner Humboldt Deutz Ag Verfahren zur Herstellung von normgerechtem Zement
DK169177B1 (da) * 1991-11-27 1994-09-05 Smidth & Co As F L Fremgangsmåde til fremstilling af cement
CN1031499C (zh) * 1993-06-05 1996-04-10 山东省鲁北化工总厂 石膏窑外分解工艺与装置
DK129594A (da) * 1994-11-11 1996-05-12 Smidth & Co As F L Fremgangsmåde til fremstilling af klinker i stationær brændingsreaktor
JP2001163644A (ja) * 1999-12-08 2001-06-19 Taiheiyo Cement Corp セメントの製造方法
IT1317851B1 (it) * 2000-02-24 2003-07-15 Curzio Alessandro Quadrio Procedimento di preparazione di miscele cementizie.
DE10152991A1 (de) * 2001-10-26 2003-05-08 Wolff Walsrode Ag Verfahren und Vorrichtung zur Mahltrocknung

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195268A (zh) * 2015-09-18 2015-12-30 江苏融达新材料股份有限公司 一种立磨机粉磨锂渣、矿渣复合粉的生产方法
CN105396673A (zh) * 2015-09-18 2016-03-16 江苏融达新材料股份有限公司 一种立磨机粉磨镍铁渣、钢渣复合粉生产方法

Also Published As

Publication number Publication date
CN1826297A (zh) 2006-08-30
WO2005019129A2 (fr) 2005-03-03
WO2005019129A3 (fr) 2005-04-28
MXPA06000872A (es) 2006-03-30
DE10333361A1 (de) 2005-02-10
EA007418B1 (ru) 2006-10-27
EA200600309A1 (ru) 2006-06-30
JP2006528123A (ja) 2006-12-14
CN100429171C (zh) 2008-10-29
US20070278333A1 (en) 2007-12-06

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