CN1285532C - Efficient calcium thioaluminate type bulking agent and its preparing process - Google Patents

Efficient calcium thioaluminate type bulking agent and its preparing process Download PDF

Info

Publication number
CN1285532C
CN1285532C CN 02116312 CN02116312A CN1285532C CN 1285532 C CN1285532 C CN 1285532C CN 02116312 CN02116312 CN 02116312 CN 02116312 A CN02116312 A CN 02116312A CN 1285532 C CN1285532 C CN 1285532C
Authority
CN
China
Prior art keywords
wingdale
gypsum
calcium sulphoaluminate
swelling agent
calcium
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.)
Expired - Lifetime
Application number
CN 02116312
Other languages
Chinese (zh)
Other versions
CN1369455A (en
Inventor
陈智丰
张振秋
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN 02116312 priority Critical patent/CN1285532C/en
Publication of CN1369455A publication Critical patent/CN1369455A/en
Application granted granted Critical
Publication of CN1285532C publication Critical patent/CN1285532C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • C04B7/32—Aluminous cements
    • C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The present invention relates to an efficient calcium thioaluminate type bulking agent and a preparing process thereof, which is an improvement of the production process of CAS type bulking agents. Gypsum is calcined and mixed by two processes in the improved process. The preparing process comprises the following steps: firstly, limestone, gypsum and bauxite are calcined in a rotary kiln, and calcium sulfate clinkers are prepared; secondly, the clinkers and the gypsum are mixed and ground into powders, and proper limestone is added to generate the CAS type bulking agents. The efficient calcium thioaluminate type bulking agent not only keeps the properties and the advantages of the CAS type bulking agents, but also has the advantage that alkali content and production cost are greatly reduced, and the offers a technological line suitable for national conditions of China to the production of China-made bulking agents with high quality.

Description

High-efficient calcium sulfoaluminate type expander and craft
Technical field
The invention belongs to concrete expansion compound and improve design and supporting production technique, particularly to the improvement of calcium sulphoaluminate type swelling agent manufacture craft.
Background technology
In sclerosis initial stage acquisition expansion to a certain degree, be a kind of important means of improving concrete performance.For this reason, countries in the world are developed various types of expansive cements and swelling agent unexpectedly mutually.Although there are many chemical substances can cause concrete expansion by corresponding chemical reaction, the swelling agent of the application that enters so far mainly contains three kinds of reactions: the CaO aquation is Ca (OH) 2, the MgO aquation is Mg (OH) 2, generate the aquation calcium sulphoaluminate.Because the unstable of CaO and MgO itself and expansion process chemical reaction process, at present seldom application promptly no longer use CaO and MgO and do major ingredient in the swelling agent.Consistently think that the aquation calcium sulphoaluminate will be at present and the expansion sources that mainly can utilize in the future.
Nineteen sixty-five, before day swelling agent of the present invention, expansive cement and self-stressing cement have been invented in the expansion that the process that Russia and the U.S. two countries all form in mudstone by ettringite produces, and are mainly used to produce cement penstock and expansive concrete.The swelling agent that Japan develops and produce calcium sulphoaluminate type (ColciumSulpho-Aluminat is abbreviated as CSA) and lime type swelling agent to be become in the world the earliest uses state, is still monopolizing the world market at present.Employing electric furnace fusion calcining in Japan's technology, a kind of ratio proportioning that is the raw material preparation in the formation ettringite directly grinds into swelling agent on the selected batching after burning till, and another kind is to be mixed in proportion when grinding after grog and part gypsum are calcined combustion respectively.
Domestic studies have shown that begins the seventies, CAS swelling agent superior performance, but Costco Wholesale is too high, and the furnace melting technique calcining can't be used at home, adopts to be difficult on the low-cost rotary kiln technology realize.The mid-1970s, it is the swelling agent of main component that China has occurred with alunite and anhydrite, though cost is lower, its unstable properties, expansion period is long, the alkali content height, the volume height still has big gap relatively on its performance of CAS swelling agent.
Summary of the invention
The objective of the invention is to provide a kind of technology way that goes out the CAS swelling agent with the rotary kiln for the main technique device fabrication, and to produce with the calcium sulphoaluminate with this processing method be the cement expansive material of expansion sources.
The present invention improves Japanese CAS swelling agent manufacturing technology.Its basic starting point is not reduce raw-material specification of quality, thereby and the route and the mode of change processes significantly reduce production costs.The gypsum a large amount of more than needed that will add in the time of should joining raw material in this process control procedure adds when changing into the finished product grinding.Can accurately be transported to into amount of gypsum on the one hand energy consumption and improve production cost when having removed a large amount of gypsum calcination on the other hand again from according to the actual constituent of grog.The present invention conceives and has improved usage ratio of equipment, and actual this method of proof is effective, and the product of being produced is equally matched with the traditional CAS quality product of Japan, but cost obviously reduces.The new processing method that is formed by above key improvements is as follows:
A, what at first carry out is the preparation section of calcium sulphoaluminate grog, and this operation is finished bauxitic clay exactly in rotary kiln or shaft kiln, the calcination process of Wingdale and gypsum mixing raw material.The heavy per-cent of the material component in the calcination process is:
Wingdale 70-85%,
Bauxitic clay 5-30%,
Gypsum 2-20%.
The rotary kiln of putting into 1200 ℃-1400 ℃ after the above raw material pulverizing homogenizing is burnt till the calcium sulphoaluminate grog.
B, again with the calcium sulphoaluminate grog that burns till and plaster stone material and Wingdale again after the proportioning grinding become the swelling agent finished product.With calcium sulphoaluminate grog and plaster stone after the calcining and Wingdale again after the proportioning weight percentages of proportioning again in the operation of grinding generation swelling agent be:
Calcium sulphoaluminate grog 20-90%,
Plaster stone 10-60%,
Wingdale 0-20%.
Become powder by above mixed and grinding, send into pneumatic blending machine uniform mixing again and obtain the swelling agent product.
Further specify below in conjunction with process flow sheet and the objective of the invention is how to realize.
Description of drawings
Fig. 1 is process flow sheet of the present invention
Wherein 1 represent Wingdale, 2 represent gypsum, and on behalf of bauxitic clay, A, 3 represent proportioning, pulverizing, homogenization process, and B represents calcining in the rotary kiln, and 4 represent plaster stone, and C represents proportioning, pulverizing, homogenization process, and 5 represent stockyard.
Embodiment
For realizing purpose of the present invention, this production technique of improving CAS type swelling agent is designed to two main proportioning processes, at first be the raw material that Wingdale, gypsum and bauxitic clay proportioning become to be put into rotary kiln calcine, the embodiment of its proportioning is as follows: (weight percent)
Embodiment Wingdale Gypsum Bauxitic clay
1 2 3 4 85 83 70 50 10 2 15 20 5 15 15 30
Prepare after by above embodiment three kinds of raw material pulverizing, homogenizing puts into particle grog that the 1200-1400 calcined by rotary kiln becomes to contain calcium sulphoaluminate, with the reasonable again assembly of actual content and plaster stone material of grog calcium sulphoaluminate, also can suitably add Wingdale, to adjust characteristic, specific embodiment is as follows:
Embodiment The calcium sulphoaluminate grog Plaster stone Wingdale
5 6 7 8 20 45 60 90 60 40 30 10 20 15 10 0
Homogenizing becomes finished product in the pneumatic blending machine by sending into after the above Example formulations proportioning mixing pulverizing.
Above raw material send the content that should guarantee its effective ingredient when getting in order to ensure the quality of products, reduce the content of oxious component, this is the primary condition that raw material are selected, Wingdale can be chosen lime, calcium oxide or it is calcareous content of starting materials for the industrial residue of major ingredient on the basis of ensuring the quality of products, can use natural alumina, aluminum oxide or be that industrial residue, the mine tailing of major ingredient comes the substitution of Al alumina to do aluminum raw material with the aluminum oxide, and can substitute gypsum with natural anhydrite, aqueous gypsum or phosphogypsum, fluorgypsum.Yet should guarantee that CaO content should be greater than 53% in the calcareous raw material in the used raw material of preparation calcium sulphoaluminate grog by chemical examination, and SiO 2Content should be less than 1.5%.Al in the aluminum raw material 2O 3Content should be greater than 70%, and SiO 2Content should be less than 7%, SO in the gypsum material 3Content is greater than 48%, SiO 2Content should be less than 2%.
The granularity of raw material pulverizing is between the 80-100 order when preparation calcium sulphoaluminate grog, and the CAS swelling agent granularity that is processed into should surplus be not more than 10% under 120 mesh sieves, and can guarantee that specific surface area is at 250m 2/ Kg.
Utilize the made CAS swelling agent of above novel process, come down in the rotary kiln incinerating calcium sulphoaluminate grog and the gypsum raw material mixture of assembly again.Wherein the calcium sulphoaluminate grog is the unslaked lime by 70%-85%, and the gypsum of 2-20% and 5-30% bauxitic clay mix back calcining institute resultant.Get that its 20-90% adds the plaster stone of 10-60% in right amount again and the Wingdale combination matching of 0%-20% is made CAS type swelling agent product.
The made CAS swelling agent basic raw material of processing method of the present invention is natural alumina, gypsum and Wingdale, in the alumina in the special place of production, contain the small amount of potassium sodium, gypsum and Wingdale do not contain potassium sodium substantially, so alkali content can effectively be controlled at below 0.3% in the swelling agent, content of magnesia also is not more than 3%, and its addition content of evidence is few, the phase of expansion is short, particularly it adopts calcined by rotary kiln, and cost obviously reduces, and performance can be than U.S. with the electric furnace smelting process.It is a significant improvement to existing technology.

Claims (6)

1, efficient calcium sulphoaluminate type method for preparing expansion agent, it is that raw materials melt is sintered into the calcium sulphoaluminate grog that this method comprises with aluminium vanadine, Wingdale, gypsum, and will calcine the calcium sulphoaluminate grog of producing generates calcium sulphoaluminate type swelling agent finished product again with plaster stone and Wingdale proportioning grinding the course of processing, it is characterized in that:
The weight percent of the material component in a, the calcination process is:
Wingdale 70-85%,
Bauxitic clay 5-30%,
Gypsum 2-20%,
Rotary kiln or the shaft kiln of putting into 1200 ℃-1400 ℃ after the above raw material pulverizing homogenizing are sintered into the calcium sulphoaluminate grog,
B, the calcium sulphoaluminate grog after will calcining and plaster stone and the Wingdale proportioning weight percentages that grinding generates in the operation of swelling agent after the proportioning again is:
Calcium sulphoaluminate grog 20-90%,
Plaster stone 10-60%,
Wingdale 0-20%,
Become powder by above mixed and grinding, send into pneumatic blending machine uniform mixing again and obtain the swelling agent product.
2, according to the said method for preparing expansion agent of claim 1, it is characterized in that Wingdale is selected lime, calcium oxide for use or be that the waste residue of major ingredient substitutes with it, waste residue or mine tailing that the aluminium vanadine adopts aluminum oxide or is rich in aluminum oxide substitute, and gypsum substitutes with natural anhydrite, phosphogypsum or fluorgypsum.
3,, it is characterized in that in the raw material of preparation calcium sulphoaluminate grog, containing CaO greater than 53%, SiO in the Wingdale according to the preparation method of claim 1 or 2 said swelling agents 2Less than 1.5%, Al in the bauxitic clay 2O 3Should be greater than 70%, SiO 2Less than 7%, contain SO in the gypsum 3Should be greater than 48%, SiO 2Content is less than 2%.
4,, it is characterized in that preparing in the proportioning raw materials of sulfur-bearing calcium aluminate clinker each raw material grinding particle size at the 80-100 order according to the said method for preparing expansion agent of claim 1.
5, a kind of calcium sulphoaluminate type swelling agent, comprise sulfur-bearing calcium aluminate clinker, Wingdale and gypsum in its composition as expansion sources, it is characterized in that described sulfur-bearing calcium aluminate clinker is the Wingdale by 70-85%, what calcining made in 1200 ℃ of-1400 ℃ of rotary kilns or shaft kiln behind the aluminium vanadine of 5-30% and pulverizing of 2-20% gypsum and the uniform mixing, the composition of swelling agent (weight percent) is:
Calcium sulphoaluminate grog 20-90%,
Plaster stone 10-60%,
Wingdale 0-20%.
6, according to the said swelling agent of claim 5, the granularity of raw material pulverizing is between the 80-100 order when it is characterized in that preparing the calcium sulphoaluminate grog, and the CAS swelling agent granularity that is processed into should surplus be not more than 10% under 120 mesh sieves, and can guarantee that specific surface area is at 250m 2/ Kg.
CN 02116312 2002-03-22 2002-03-22 Efficient calcium thioaluminate type bulking agent and its preparing process Expired - Lifetime CN1285532C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02116312 CN1285532C (en) 2002-03-22 2002-03-22 Efficient calcium thioaluminate type bulking agent and its preparing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02116312 CN1285532C (en) 2002-03-22 2002-03-22 Efficient calcium thioaluminate type bulking agent and its preparing process

Publications (2)

Publication Number Publication Date
CN1369455A CN1369455A (en) 2002-09-18
CN1285532C true CN1285532C (en) 2006-11-22

Family

ID=4744070

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02116312 Expired - Lifetime CN1285532C (en) 2002-03-22 2002-03-22 Efficient calcium thioaluminate type bulking agent and its preparing process

Country Status (1)

Country Link
CN (1) CN1285532C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103496867A (en) * 2013-10-08 2014-01-08 中国建筑材料科学研究总院 Calcium sulphoaluminate or calcium sulphoaluminate-calcium oxide concrete expanding agents as well as preparation method and application thereof

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100360451C (en) * 2006-04-20 2008-01-09 中国地质大学（北京） Method for preparing sulphate aluminium cement by red mud
CN101062849B (en) * 2007-05-08 2010-04-14 陈智丰 Low-alkalinity composite cracking-against waterproof agent
CN101607801A (en) * 2009-07-31 2009-12-23 贵州省建筑材料科学研究设计院 A kind of concrete high-efficiency expanding agent and preparation method thereof
CN102161575A (en) * 2010-02-23 2011-08-24 东莞易施宝建筑材料有限公司 Waterproof daub for doors and windows
CN101905957B (en) * 2010-08-16 2012-06-27 上海武冠新材料有限公司 Concrete volume stable anti-cracking agent
CN102380125B (en) * 2011-09-06 2013-12-04 中国人民解放军第四军医大学 Pedicle screw medical anchoring agent
CN103796968B (en) * 2011-09-14 2016-04-13 电化株式会社 Lime white and employ its manufacture method of grog
CN102503210A (en) * 2011-11-21 2012-06-20 天津豹鸣建筑工程材料有限责任公司 High performance concrete expanding agent
CN103130437B (en) * 2013-03-15 2014-10-29 中国建筑材料科学研究总院 Gypsum and calcium oxide melt inclusion expansion clinker, concrete expansion agent, and preparation method and application thereof
CN104446049B (en) * 2014-12-19 2016-04-06 青岛理工大学 A kind of with desulfurizing petrol coke slag aluminosulfate cement that is raw material and preparation method thereof
CN104788034B (en) * 2015-04-17 2017-06-13 武汉工程大学 A kind of preparation method of the long-acting swelling agent of ardealite base high energy
CN106630717A (en) * 2017-01-04 2017-05-10 济南大学 Long-acting swelling agent for cement concrete and preparation method of long-acting swelling agent
CN106986569B (en) * 2017-03-23 2019-09-20 福建工程学院 Utilize the preparation method of waste aluminum slag synthesis anhydrous calcium sulphoaluminate swelling agent
CN112645623A (en) * 2020-12-18 2021-04-13 新疆荣高鸿俊新材料技术有限公司 White calcium sulphoaluminate type expanding agent and preparation method and application thereof
CN113307517A (en) * 2021-06-18 2021-08-27 登电集团水泥有限公司 Quick-setting curing material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103496867A (en) * 2013-10-08 2014-01-08 中国建筑材料科学研究总院 Calcium sulphoaluminate or calcium sulphoaluminate-calcium oxide concrete expanding agents as well as preparation method and application thereof
CN103496867B (en) * 2013-10-08 2016-02-17 中国建筑材料科学研究总院 A kind of calcium sulphoaluminate or calcium sulphoaluminate-calcium oxide cement expansive material and preparation method thereof and application

Also Published As

Publication number Publication date
CN1369455A (en) 2002-09-18

Similar Documents

Publication Publication Date Title
KR101917017B1 (en) Rapid-setting and hardening, high-belite sulfoaluminate cement clinker as well as application and production process thereof
CN1285532C (en) Efficient calcium thioaluminate type bulking agent and its preparing process
US7850776B2 (en) High belite-containing sulfoaluminous clinker, method for the production and the use thereof for preparing hydraulic binders
FI115298B (en) The cementitious composition
CN103496867B (en) A kind of calcium sulphoaluminate or calcium sulphoaluminate-calcium oxide cement expansive material and preparation method thereof and application
CN101367629B (en) Manufacture of sulphur aluminate cements with electrolytic manganesium residue and method of manufacturing the same
MX2014001184A (en) Method for producing ternesite.
CN102584045A (en) Active belite-sulphate aluminum cement clinker and preparation method for active belite-sulphate aluminum cement clinker
CN103922619A (en) Desulfurized gypsum-based hydraulic cementing material
CN108675657A (en) A method of preparing silicate-aluminium sulfate compound system clinker using waste residue
CN1085195A (en) Powdered coal ash-slag cement and manufacture method thereof
EP1847515B1 (en) Cement clinker and process for producing the same
CN1850693A (en) Method for producing cement using high-carbon fly ash
CN104402265A (en) Cement clinker calcined from carbide slag as raw material
CN1040741C (en) High-efficiency concrete expansion admixture and preparing process thereof
CN100457661C (en) Calcium aluminate-calcium sulfaluminate cement clinker and the prepn of its swelling agent
KR100216432B1 (en) Quick-hardening clinker composition and preparing method the same
CN109354425B (en) Composite mineralizer suitable for calcining white sulphoaluminate cement clinker and preparation method thereof
CN114956642B (en) Composite expanding agent based on regenerated micro powder and preparation method thereof
CN1631832A (en) Multifunctional low-alkali low-content expanding agent
CN1792955A (en) High active concrete admixture
US3257219A (en) High-alumina cement
CN101423341A (en) Portland cement
CN1432544A (en) Sulphoaluminate cement clinker producing process with industrial waste
JP4453097B2 (en) Method for producing low heat generation cement with high phosphorus content

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Beijing Municipal Road & Bridge Building Material Group Co.,Ltd.

Assignor: Chen Zhifeng

Contract fulfillment period: 2006.12.20 to 2011.12.19

Contract record no.: 2009110000191

Denomination of invention: Efficient calcium thioaluminate type bulking agent and its preparing process

Granted publication date: 20061122

License type: Exclusive license

Record date: 20090908

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.12.20 TO 2011.12.19; CHANGE OF CONTRACT

Name of requester: BEIJING MUNICIPAL ROAD AND BRIDGE BUILDING MATERIA

Effective date: 20090908

CX01 Expiry of patent term

Granted publication date: 20061122

CX01 Expiry of patent term