CN101143764A - Cement clinker prepared from dehydrated sludge burdening and preparation method thereof - Google Patents

Cement clinker prepared from dehydrated sludge burdening and preparation method thereof Download PDF

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Publication number
CN101143764A
CN101143764A CNA2007100452992A CN200710045299A CN101143764A CN 101143764 A CN101143764 A CN 101143764A CN A2007100452992 A CNA2007100452992 A CN A2007100452992A CN 200710045299 A CN200710045299 A CN 200710045299A CN 101143764 A CN101143764 A CN 101143764A
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China
Prior art keywords
raw material
cement clinker
cement
sandstone
material powder
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CNA2007100452992A
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Chinese (zh)
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CN100522859C (en
Inventor
黄清海
吕炎
郁伟华
陆俭
周颉
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Shanghai Lianhe Cement Coltd
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Shanghai Lianhe Cement Coltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/34Hydraulic lime cements; Roman cements ; natural cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/36Manufacture of hydraulic cements in general
    • C04B7/43Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/432Preheating without addition of fuel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y02P40/121Energy efficiency measures, e.g. improving or optimising the production methods

Abstract

A cement clinker produced from the dewatered sludge and the manufacturing methods are disclosed, wherein the raw materials are fed into a mixing belt at a ratio of 82.1 percent of limestone, 11.8 percent of sandstone, 1.8 percent of steel slag, 2.0 percent of fly ash and 2.3 percent of dewatered sludge, then delivered to a raw material grinder and further directed to a rotary kiln in which the air at the tail of rotary kiln, around 380 DEG C, is used as the drying source. The raw material powder produced by the raw material grinder is delivered into an air separator for selection of raw material powder with acceptable water content and fineness prior to feeding a large homogenization silo; the raw materials are mixed and homogenized further in the large homogenization silo; then the raw material powder will be send into the a rotary kiln following repeated homogenizing and mixing to make half-finished cement clinker and cement in the end. The advantages are as follows: the sludge sourced from the water treatment plant are used to make the cement clinker and cement products, which is acceptable for environment protection and has good social effect; the SiO<SUB>2</SUB> contained in the sludge is an active element, which can reduce the sandstone consumption and proves to be sandstone efficient; the sludge has good grindability and is favorable for the making the cement clinker as the SiO<SUB>2</SUB> contained therein is an active element.

Description

A kind of cement clinker and production method thereof that adopts dewatered sludge ingredient to make
Technical field
The present invention relates to the cement dry method production method, especially refer to the technological innovation of raw material proportion scheme in a kind of cement produced with the dry method production, promptly invented the water supply industry waste has been fully utilized, utilize the dewatered sludge after water factory's sludge from sedimentation tank water concentrates, part substitutes the original clayey raw material that adopts, and adopts the novel method of dewatered sludge ingredient as the cement produced with the dry method of one of component of cement raw mix proportioning.
Background technology
Produce cement and at first will under the condition of high temperature, will contain CaO, Fe 2O 3, SiO 2, Al 2O 3, MgO various raw materials be sintered into cement clinker, grog adds the common grinding of an amount of gypsum and makes cement then.Common batching generally adopts Wingdale (CaCO 3) introduce CaO, siliceous raw materials such as clay or sandstone are introduced SiO 2The SiO of clay 2Content is lower, is generally 45~60%, the SiO of sandstone 2Content is very high, is generally 70~85%.Along with the requirement of conservation of nature ecology is more and more tighter, clay mustn't arbitrarily excavate employing in China; Sandstone then belongs to Mineral resources; it is the main raw material in the material of construction; conservation of mineral resources and target of rationally utilizing and principle be carry out energy-saving and cost-reducing, the substitute of development novel metal, novel metalloid and conventional raw mineral materials, the reduction economic society is to the degree of dependence of conventional raw mineral materials.So press for the substitute of seeking siliceous raw material, also be contribution to conservation of resources even part substitutes.
Summary of the invention
Face the non-renewable of conventional Mineral resources, seek a kind of new equivalent material and new raw meal proportioning ratio, to satisfy the needs of firing high quality cement clinker, reducing cost.Seek good, the active high material of a kind of abrasive property and partly substitute sandstone.
Technical problem to be solved by this invention provides a kind of cement clinker and production method thereof that adopts the waterworks dewatered sludge ingredient to make.
The present invention solves the problems of the technologies described above the technical scheme of being taked: the present invention adopts the composition and the proportioning of the cement clinker that dewatered sludge ingredient makes as follows: Wingdale 82.1%, sandstone 11.8%, slag 1.8%, flyash 2.0%, dewatered sludge 2.3%.And the composition and the prescription of existing cement are: Wingdale 82.5%, sandstone 12.9%, slag 2.1%, flyash 2.5%.
The analytical procedure of dewatered sludge adopts JC/T874-2000 " cement siliceous raw material chemical analysis method ".
The main chemical compositions of dewatered sludge is: (%)
Loss on ignition: 16~20
SiO 2:45~50 Al 2O 3:19~22?Fe 2O 3:6~8CaO:1~3?MgO:2~3?SO 3:0.3~1.0K 2O:1.5~1.9 Na 2O:0.7~0.9
The production method of this cement clinker is: by proportioning raw materials Wingdale 82.1%, sandstone 11.8%, slag 1.8%, flyash 2.0%, dewatered sludge 2.3%, enter the mixing belt after the accurate measurement, enter raw mill again, introduce the about 380 ℃ gas of rotary kiln as the oven dry thermal source, the raw material powder that grinds through raw mill passes through the air powder separating machine, its moisture, the raw material powder that fineness is qualified are sent into large-scale raw material homogenizing storehouse, and meal loopback is again gone into raw mill grinding again; The further homogenizing of raw material powder in the raw material homogenizing storehouse is mixed, and through homogenizing blended raw material powder repeatedly, is conveyed into rotary kiln, burns till and makes work in-process---cement clinker.More than be feature of the present invention place, later production method is undertaken by prior art, and promptly cement clinker adds gypsum, adds blended material (according to a certain ratio) again, enters the finished ball grinding machine jointly and grinds, and finally obtains product---cement.
Advantage of the present invention is:
1, the mud of comprehensive utilization waterworks, grog that batching makes and cement products meet environment and can accept principle, and social benefit is obvious;
2, the SiO that contains in the mud 2Be active SiO 2, can reduce the incorporation of sandstone, the sandstone resource of saves valuable;
3, the mud grindability is good, because its SiO 2Be active SiO 2, help grog and burn till.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Between 45~48%, it can be used as siliceous correction material according to the content of silicon oxide in the chemical analysis of dewatered sludge, in order to replenish the deficiency that cooperates silicon oxide in the raw material.
General sandstone moisture is 4~6%, the moisture of dewatered sludge is 30~40%, the dewatered sludge water content is more much higher than sandstone, according to proportioning raw materials, at Wingdale moisture 3.5%, sandstone moisture 5.0%, slag moisture 6.0%, under the situation of flyash moisture 0.1%, the raw material that do not contain mud go into that moisture is 3.7% before the mill, moisture is 4.4% before the mill and the raw material that contain mud are gone into, so will suitably improve in actual use into the raw mill hot blast temperature, kiln exhaust gas body and cold wind is mixed goes into raw mill oven dry gas temperature and brings up to 270 ℃ from 240 ℃, keep mill ventilation, to guarantee raw material output, mass conservationization.

Claims (2)

1. cement clinker that adopts dewatered sludge ingredient to make, its composition and proportioning are:
Wingdale 82.1%, sandstone 11.8%, slag 1.8%, flyash 2.0%, dewatered sludge 2.3%.
2. one kind is adopted dewatered sludge ingredient Cement Production method, it is characterized in that:
By proportioning raw materials Wingdale 82.1%, sandstone 11.8%, slag 1.8%, flyash 2.0%, dewatered sludge 2.3%, enter the mixing belt after the accurate measurement, enter raw mill again, introduce the about 380 ℃ gas of rotary kiln as the oven dry thermal source, the raw material powder that grinds through raw mill passes through the air powder separating machine, its moisture content, the raw material powder that fineness is qualified are sent into large-scale raw material homogenizing storehouse, the further homogenizing of raw material powder in the raw material homogenizing storehouse is mixed, through homogenizing blended raw material powder repeatedly, be conveyed into rotary kiln, fire half-finished cement clinker; Later production method is undertaken by prior art, finally obtains product cement.
CNB2007100452992A 2007-08-27 2007-08-27 Cement clinker prepared from dehydrated sludge burdening and preparation method thereof Expired - Fee Related CN100522859C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007100452992A CN100522859C (en) 2007-08-27 2007-08-27 Cement clinker prepared from dehydrated sludge burdening and preparation method thereof

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Application Number Priority Date Filing Date Title
CNB2007100452992A CN100522859C (en) 2007-08-27 2007-08-27 Cement clinker prepared from dehydrated sludge burdening and preparation method thereof

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CN101143764A true CN101143764A (en) 2008-03-19
CN100522859C CN100522859C (en) 2009-08-05

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101381212B (en) * 2008-10-24 2011-05-18 重庆大学 Sludge building material and preparation method thereof
CN102219342A (en) * 2011-05-03 2011-10-19 大连东泰产业废弃物处理有限公司 Hydrocarbons-containing organic sludge and cement kiln joint disposal pretreatment method
CN103253877A (en) * 2013-05-15 2013-08-21 南京化工职业技术学院 Composite cement and preparation method thereof
CN103396019A (en) * 2013-07-25 2013-11-20 尹无忌 Method for resource utilization of water-containing sludge
CN103449746A (en) * 2013-08-28 2013-12-18 句容联众科技开发有限公司 Low heavy metal-leached ecological cement
CN103833247A (en) * 2014-01-21 2014-06-04 北京科技大学 Method of firing to produce cement by utilization of lime dried sludge
CN104230190A (en) * 2014-09-18 2014-12-24 环境保护部华南环境科学研究所 Method for treating arsenical sludge by utilizing rotary cement kiln
CN104310817A (en) * 2014-10-10 2015-01-28 北京建筑材料科学研究总院有限公司 Method for preparing cement clinker by using industrial sludge as reaction activator
CN105293959A (en) * 2015-09-21 2016-02-03 山东联合王晁水泥有限公司 Desulfurization process in process of producing cement clinkers by using industrial calcium carbide waste residues
CN106746790A (en) * 2016-12-23 2017-05-31 盐城工学院 Binder Materials, its preparation method and application and the cement prepared therefrom prepared using municipal sludge
CN107459270A (en) * 2017-08-08 2017-12-12 大同冀东水泥有限责任公司 A kind of cement formula
CN110526603A (en) * 2018-05-25 2019-12-03 淮安市水泥厂有限公司 Utilize the Novel steel ground-slag and its processing method of the production of industrial residue sludge
CN113020210A (en) * 2021-03-06 2021-06-25 昆明冶金高等专科学校 Ferro-manganese ore radial mineral separation and resource comprehensive utilization process
CN114262169A (en) * 2022-01-03 2022-04-01 何九荣 High-strength cement preparation system and preparation method
CN116715504A (en) * 2023-08-09 2023-09-08 天津杰臻环保技术有限公司 Method for producing building material by utilizing land natural gas exploitation water treatment sludge

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101381212B (en) * 2008-10-24 2011-05-18 重庆大学 Sludge building material and preparation method thereof
CN102219342A (en) * 2011-05-03 2011-10-19 大连东泰产业废弃物处理有限公司 Hydrocarbons-containing organic sludge and cement kiln joint disposal pretreatment method
CN103253877A (en) * 2013-05-15 2013-08-21 南京化工职业技术学院 Composite cement and preparation method thereof
CN103253877B (en) * 2013-05-15 2015-06-03 南京化工职业技术学院 Composite cement and preparation method thereof
CN103396019A (en) * 2013-07-25 2013-11-20 尹无忌 Method for resource utilization of water-containing sludge
CN103449746A (en) * 2013-08-28 2013-12-18 句容联众科技开发有限公司 Low heavy metal-leached ecological cement
CN103449746B (en) * 2013-08-28 2016-01-06 周建平 A kind of low heavy metal leaches eco-cement
CN103833247B (en) * 2014-01-21 2016-06-15 北京科技大学 A kind of method utilizing Calx dewatered sludge cement baking
CN103833247A (en) * 2014-01-21 2014-06-04 北京科技大学 Method of firing to produce cement by utilization of lime dried sludge
CN104230190A (en) * 2014-09-18 2014-12-24 环境保护部华南环境科学研究所 Method for treating arsenical sludge by utilizing rotary cement kiln
CN104310817A (en) * 2014-10-10 2015-01-28 北京建筑材料科学研究总院有限公司 Method for preparing cement clinker by using industrial sludge as reaction activator
CN105293959A (en) * 2015-09-21 2016-02-03 山东联合王晁水泥有限公司 Desulfurization process in process of producing cement clinkers by using industrial calcium carbide waste residues
CN106746790A (en) * 2016-12-23 2017-05-31 盐城工学院 Binder Materials, its preparation method and application and the cement prepared therefrom prepared using municipal sludge
CN107459270A (en) * 2017-08-08 2017-12-12 大同冀东水泥有限责任公司 A kind of cement formula
CN110526603A (en) * 2018-05-25 2019-12-03 淮安市水泥厂有限公司 Utilize the Novel steel ground-slag and its processing method of the production of industrial residue sludge
CN110526603B (en) * 2018-05-25 2022-04-29 盱眙狼山水泥有限公司 Steel slag powder produced by using industrial waste slag and sludge and treatment method thereof
CN113020210A (en) * 2021-03-06 2021-06-25 昆明冶金高等专科学校 Ferro-manganese ore radial mineral separation and resource comprehensive utilization process
CN113020210B (en) * 2021-03-06 2023-09-26 昆明冶金高等专科学校 Mineral processing and resource comprehensive utilization process for ferromanganese ore rays
CN114262169A (en) * 2022-01-03 2022-04-01 何九荣 High-strength cement preparation system and preparation method
CN116715504A (en) * 2023-08-09 2023-09-08 天津杰臻环保技术有限公司 Method for producing building material by utilizing land natural gas exploitation water treatment sludge
CN116715504B (en) * 2023-08-09 2023-09-29 天津杰臻环保技术有限公司 Method for producing building material by utilizing land natural gas exploitation water treatment sludge

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