CN1061949A - Adopt flyash to produce the method for white cement - Google Patents
Adopt flyash to produce the method for white cement Download PDFInfo
- Publication number
- CN1061949A CN1061949A CN91108623A CN91108623A CN1061949A CN 1061949 A CN1061949 A CN 1061949A CN 91108623 A CN91108623 A CN 91108623A CN 91108623 A CN91108623 A CN 91108623A CN 1061949 A CN1061949 A CN 1061949A
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- China
- Prior art keywords
- flyash
- lime
- white cement
- milk
- raw material
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- 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
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- Processing Of Solid Wastes (AREA)
Abstract
Adopt flyash to produce the method for white cement, be flyash to be carried out desiliconization handle, to common lime digest, purifying treatment, water glass and milk of lime precipitation is made be adjusted to lime or milk of lime again behind the Calucium Silicate powder and is closed material raw material feeding High Temperature Furnaces Heating Apparatus mature calcined material.This invention had both solved the pollution problem of flyash to environment, had opened up new way for flyash rises in value to utilize in a large number again.This white cement whiteness is higher than 90 °, and label reaches 625
#More than, the quality of producing cement than traditional technology has increased significantly.Its level reaches the late nineteen eighties international most advanced level.Have obvious social and economic benefit.
Description
The present invention relates to a kind of method of producing white cement, particularly a kind of is the method for raw material production high quality white cement with flyash.
White cement is more and more big because of its ornamental strong usage quantity in construction industry.The producer that produces white cement at present both at home and abroad is the label that guarantees cement quality and improve white cement, all will hang down clunch and the fat lime masonry main raw material for the production white cement.And low clunch and fat lime masonry are natural resources, the one, and price is higher, and the 2nd, the resource region is limited.Thereby the production that makes white cement is subjected to certain restriction.
The object of the present invention is to provide a kind of employing flyash and common building lime is the low and high-quality white cement of a kind of firing temperature of main material production.
The objective of the invention is to finish with following method:
Flyash is carried out desiliconization handle, obtain siliceous raw material-water glass.To common lime digest, purifying treatment makes it become milk of lime.Make the reaction of milk of lime and water glass, make and mix lime or milk of lime behind the Calucium Silicate powder again and be mixed with and close material raw material feeding High Temperature Furnaces Heating Apparatus mature calcined material.
Earlier pouring flyash into concentration is 40-150gNa
2Carry out desiliconization in the caustic soda soln of O/l and handle, the liquid-solid ratio of its NaOH alkali lye and siliceous waste residue is 1.5-10, and temperature of reaction is: 90-150 ℃, the reaction times is: 15-360 minute.
Above-mentioned precipitated calcium silicate processing condition are: calcium silicon is than 0.5-3.2(molecular ratio), temperature of reaction 25-100 ℃, reaction times 15-480 minute.
Above-mentioned raw material feeding high temperature kiln incinerating temperature is 1350-1500 ℃.
Pour into flyash in the certain density white liquor and make its Hybrid Heating to 90-150 ℃, react after 15-360 minute, filtration washing, the filter residue after the filtration is for production aluminum oxide or cement hardener usefulness, and filtrate is water glass.Sodium silicate solution and milk of lime are heated to 25-100 ℃, reacted 15-480 minute, calcium oxide in the milk of lime and the silicon-dioxide in the water glass are fully reacted, generate Calucium Silicate powder.With filtration of precipitated silicate calcium and solution separating, clean, make the white cement raw material.The alkali lye that diafiltration liquid reclaims uses for desiliconization.Calucium Silicate powder is adjusted with lime or milk of lime again, is mixed with qualified raw material by the requirement of white cement production, after the moulding oven dry, sends into calcining in the High Temperature Furnaces Heating Apparatus, and calcining temperature is 1350-1500 ℃, and firing time is 7-8 hour, and constant temperature time is 30-60 minute.Grog after the burning takes out bleaching at once, adds the levigate white cement that is of proper amount of gypsum then.
With flyash and common lime is that the raw material production white cement has not only fundamentally solved the white cement of high quality raw material restriction for want of production development problem, but utilization of waste material has promptly solved the problem of environmental pollution of industrial residue, has opened up new way for a large amount of utilizations and the increment of flyash again.With flyash and common lime is that the technology of raw material production white cement not only has the low characteristics of firing temperature, and its white cement whiteness reaches more than 90, and label reaches 625
#More than, the quality of producing white cement than traditional technology has had very significantly raising, and its level reaches the late nineteen eighties international most advanced level.Raw material of the present invention is easy to get, and is convenient to generally promote, and has obvious social and economic benefit.
Enumerate embodiments of the invention below:
Production method is as follows:
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Earlier pouring flyash into concentration is 100gNa
2In the caustic soda soln of O/l, the liquid-solid ratio of NaOH caustic soda soln and flyash is 3, and reaction is 30 minutes under the atmospheric boiling state, filters, and filtrate is separated with filter residue, obtains sodium silicate aqueous solution.Filter residue is used for producing aluminum oxide or cement hardener.Mix with sodium silicate aqueous solution and through the milk of lime that digestion and magnetic separation are handled that (digesting temperature is 50 ℃, digestion time is 30 minutes), making the molecular ratio of silicon-dioxide in calcium oxide in the milk of lime and the water glass is 2, and reaction is 60 minutes under atmospheric boiling, promptly obtains calcium silicon than the Calucium Silicate powder that is 2.Filter then, washing makes the Na in the Calucium Silicate powder
2O＜0.5%, diafiltration liquid reclaim alkali for recycling.
Desiliconization ash and Calucium Silicate powder chemical ingredients see Table two
| The name of an article | Interventions Requested % | ||||||||
| Igloss | Fe 2O 3 | Al 2O 3 | SiO 2 | CaO | MgO | K 2O | Na 2O | SO 3 | |
| Desiliconization flyash | 16-19 | 4-6 | 34-38 | 27-31 | 2-3 | 1-1.5 | 0.3 -0.4 | 0.5 -8 | |
| Calucium Silicate powder | 18-26 | ＜0.15 | 1-3 | 18.40 | 33-55 | 0.8-2 | 0.04 | ＜0.5 | |
Precipitated silicate calcium milk of lime adjustment with cleaning is made into calcium silicon than the qualified raw material that are 3, with former raw material is shaped to φ 10cm, the material cake of thick 2cm, calcining in the High Temperature Furnaces Heating Apparatus is gone in oven dry, temperature was raised to 1450 ℃ in 8 hours in the High Temperature Furnaces Heating Apparatus, the constant temperature bleaching of coming out of the stove at once in 45 minutes.The grog of bleaching is added 2% onychite together go into mill, the levigate white cement that is.
The white cement performance test results sees Table three.
Claims (4)
1, a kind of method that adopts flyash to produce white cement is characterized in that:
A. flyash is carried out desiliconization and handle, obtain siliceous raw material-water glass;
B. to common lime digest, purifying treatment makes it become milk of lime;
C. make the reaction of milk of lime and water glass, make and mix lime behind the Calucium Silicate powder again or milk of lime is mixed with qualified raw material feeding High Temperature Furnaces Heating Apparatus mature calcined material.
2, employing flyash as claimed in claim 1 is produced the method for white cement, it is characterized in that pouring flyash into concentration is 40-150gNa
2In the caustic soda soln of O/l, carry out desiliconization and handle, the liquid-solid ratio of its NaOH alkali lye and siliceous waste residue is 1.5-10, and temperature of reaction is: 90-150 ℃, the reaction times is 15-360 minute.
3, employing flyash as claimed in claim 1 is produced the method for white cement, and it is characterized in that the precipitated calcium silicate processing condition are: calcium silicon is than 0.5-3.2(molecular ratio), temperature of reaction 25-100 ℃, reaction times 15-480 minute.
4, employing flyash as claimed in claim 1 is produced the method for white cement, it is characterized in that qualified raw material feeding High Temperature Furnaces Heating Apparatus incinerating temperature is 1350-1500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108623A CN1061949A (en) | 1991-08-30 | 1991-08-30 | Adopt flyash to produce the method for white cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108623A CN1061949A (en) | 1991-08-30 | 1991-08-30 | Adopt flyash to produce the method for white cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1061949A true CN1061949A (en) | 1992-06-17 |
Family
ID=4909384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91108623A Pending CN1061949A (en) | 1991-08-30 | 1991-08-30 | Adopt flyash to produce the method for white cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061949A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037506C (en) * | 1993-07-13 | 1998-02-25 | 武汉工业大学 | High-active flyash mixture |
| CN1042924C (en) * | 1995-07-04 | 1999-04-14 | 安徽省凤台县硅酸盐砖厂 | Producing method for modified powdered coal ash and cement mixing material |
| CN1046257C (en) * | 1994-10-21 | 1999-11-10 | 北京科技大学 | Wet process for producing flyash cement |
| CN102249253A (en) * | 2011-01-06 | 2011-11-23 | 内蒙古大唐国际再生资源开发有限公司 | Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash |
| CN104591563A (en) * | 2015-01-13 | 2015-05-06 | 河海大学 | Cementing material prepared from fly ash and preparation method thereof |
| CN105772212A (en) * | 2016-04-25 | 2016-07-20 | 中国矿业大学 | Method of producing special type coal for white cement by using medium caking coal |
| CN105985038A (en) * | 2015-02-26 | 2016-10-05 | 华智节能(香港)有限公司 | Inorganic cementing material and preparation method thereof |
| CN108821300A (en) * | 2018-08-06 | 2018-11-16 | 东北大学 | One kind preparing CaSiO by discarded silicon slag3Method |
| CN113880472A (en) * | 2021-11-08 | 2022-01-04 | 白吉元 | Preparation method of high-performance novel white cement |
-
1991
- 1991-08-30 CN CN91108623A patent/CN1061949A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037506C (en) * | 1993-07-13 | 1998-02-25 | 武汉工业大学 | High-active flyash mixture |
| CN1046257C (en) * | 1994-10-21 | 1999-11-10 | 北京科技大学 | Wet process for producing flyash cement |
| CN1042924C (en) * | 1995-07-04 | 1999-04-14 | 安徽省凤台县硅酸盐砖厂 | Producing method for modified powdered coal ash and cement mixing material |
| CN102249253A (en) * | 2011-01-06 | 2011-11-23 | 内蒙古大唐国际再生资源开发有限公司 | Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash |
| CN102249253B (en) * | 2011-01-06 | 2013-05-01 | 内蒙古大唐国际再生资源开发有限公司 | Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash |
| US9139445B2 (en) | 2011-05-11 | 2015-09-22 | Inner Mongolia Datang International Recycling Resource Development Co., Ltd. | Method for co-producing alumina and activated calcium silicate from high-alumina fly ash |
| CN104591563A (en) * | 2015-01-13 | 2015-05-06 | 河海大学 | Cementing material prepared from fly ash and preparation method thereof |
| CN104591563B (en) * | 2015-01-13 | 2016-08-24 | 河海大学 | A kind of Binder Materials with flyash as raw material and preparation method thereof |
| CN105985038A (en) * | 2015-02-26 | 2016-10-05 | 华智节能(香港)有限公司 | Inorganic cementing material and preparation method thereof |
| CN105985038B (en) * | 2015-02-26 | 2019-03-01 | 华智节能(香港)有限公司 | A kind of water-fast and sulfate attack inorganic coagulation material and preparation method thereof |
| CN105772212A (en) * | 2016-04-25 | 2016-07-20 | 中国矿业大学 | Method of producing special type coal for white cement by using medium caking coal |
| CN105772212B (en) * | 2016-04-25 | 2018-01-19 | 中国矿业大学 | A kind of moderate cohesive coal produces extraordinary white cement coal method |
| CN108821300A (en) * | 2018-08-06 | 2018-11-16 | 东北大学 | One kind preparing CaSiO by discarded silicon slag3Method |
| CN108821300B (en) * | 2018-08-06 | 2021-02-09 | 东北大学 | Preparation of CaSiO from waste silicon slag3Method (2) |
| CN113880472A (en) * | 2021-11-08 | 2022-01-04 | 白吉元 | Preparation method of high-performance novel white cement |
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