CN1072159A - A kind of process for low-temperature calcining cement clinker aggregate - Google Patents
A kind of process for low-temperature calcining cement clinker aggregate Download PDFInfo
- Publication number
- CN1072159A CN1072159A CN92111987A CN92111987A CN1072159A CN 1072159 A CN1072159 A CN 1072159A CN 92111987 A CN92111987 A CN 92111987A CN 92111987 A CN92111987 A CN 92111987A CN 1072159 A CN1072159 A CN 1072159A
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- Prior art keywords
- low
- slag
- calcining
- temperature
- cement clinker
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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
-
- 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
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
A kind of process for low-temperature calcining cement clinker aggregate comprises 20-60% Wingdale, 30-71% flyash, coal gangue, slag, and 4-7% chromium slag and 1-3% phosphogypsum or 3-10% yellow phosphorus slag, and an amount of coal mixes levigate; In cement burning plants such as fluidizing furnace, in 940-1100 ℃ of temperature lower calcinations 20-40 minutes.The present invention is a main raw material with the industrial residue, makes unmanageable chromium slag obtain utilizing and toxicity reduces greatly, and energy consumption is low and can be with heat integration, and production cost is low, has remarkable social benefit and economic benefit.
Description
The present invention relates to a kind of manufacturing of cement, particularly a kind of is the process for low-temperature calcining cement clinker aggregate of main raw material with the industrial residue.
Existing burning silicate cement clinker generally is to be main raw material with clay, Wingdale, is composite mineralizer with gypsum and fluorite, and calcining temperature is 1350-1450 ℃, and calciner adopts rotary kiln or shaft kiln; Typical cement clinker chemical constitution is shown in subordinate list 1, and essential mineral is C
3S, C
2S, C
3A, C
4AF etc.Because the calcining temperature height, it is many to consume heat energy, the product cost height.
The purpose of this invention is to provide a kind of is the process for low-temperature calcining cement clinker aggregate of main raw material, with low cost, good product quality with the industrial residue.
Content of the present invention is: a kind of process for low-temperature calcining cement clinker aggregate is characterized in that comprising:
A, with (weight %) 20-60% Wingdale,
The mixture of one or more in 30-71% flyash, coal gangue, slag, the low grade coal,
The composite mineralizer that 4-7% chromium slag and 1-3% phosphogypsum or 3-10% yellow phosphorus slag are formed,
And an amount of coal mixes levigate;
B, in fluidizing furnace, fluidized-bed or other cement burning plants, be 940-1100 ℃ of down calcining 20-40 minute in temperature;
C, cooling.
Preferably 980-1100 ℃ of calcining temperature described in the content of the present invention.
The preferable of composite mineralizer described in the content of the present invention consists of: 5% chromium slag and 1.5% phosphogypsum or 7% yellow phosphorus slag.
Compared with prior art, the present invention has following characteristics:
(1) without clay, use reluctant industrial residue-flyash, coal gangue, slag etc. is a main raw material(s), and the industrial residue consumption is big, helps protecting environment, and economic results in society are remarkable;
(2) adopt chromium slag and phosphogypsum or yellow phosphorus slag as composite mineralizer, chromium slag incorporation can reach 7%, and chromium is reduced (Cr in the calcination process
+ 6→ Cr
+ 3), toxicity reduces greatly, removes poison thoroughly, has opened up wide road for the utilization of unmanageable chromium slag, has very significant environment social benefit and economic benefit;
(3) calcining temperature is low, is 940-1100 ℃ only, and energy consumption significantly reduces, and production cost is low;
(4) use fluidizing furnace as calciner, can generate electricity simultaneously or heat supply, heat energy is fully used;
(5) cement clinker of the present invention's production, essential mineral is active β-C
2S, C
4AF, C
12A
7, CA etc., its 28 days intensity can surpass 325# cement mark; This cement can be widely used in construction work, cement products, the rural water conservancy construction.
The invention will be further described below by embodiment:
Embodiment 1: a kind of process for low-temperature calcining cement clinker aggregate, weight is consisted of the each component of 37.6% flyash, 57% Wingdale, 4% chromium slag, 1.4% phosphogypsum, add an amount of coal, mix levigate tailing over and be not more than 10% to mistake 0.08mm, be blown into the fluidizing furnace internal combustion, hot fluidizing velocity is 3.1 a meters/paper money, 1050 ℃ of fluidized-bed temperature controls, raw material calcination time in stove is not less than 20 minutes, the grog that calcining is good cools off rapidly, levigate to tailing over less than 6% by 0.08mm, and calcining sample is carried out physical and mechanical property mensuration by standard method.Performances such as the ripe heat material of the low heat cement that calcining is good stability is qualified, and is against corrosion are good, and ultimate compression strength reached 37.8MPa in 28 days.
Embodiment 2: a kind of process for low-temperature calcining cement clinker aggregate.Weight is consisted of 41.8% coal gangue, the each component weighing of 52.5% Wingdale, 4.7% chromium slag, 1.0% phosphogypsum, add an amount of coal, mix levigate extremely tailing over and be not more than 10%, be blown into the fluidizing furnace internal combustion by 0.08mm, hot fluidizing velocity is 2.9 a meters/paper money, 1020 ℃ of fluidized-bed temperature controls, raw material calcination time in stove is not less than 20 minutes, and the grog that calcining is good cools off rapidly, levigate to tailing over less than 6% by 0.08mm, and carry out physical and mechanical property mensuration by standard method.Performances such as the low heat cement grog stability that calcining is good is qualified, and is against corrosion are good, and ultimate compression strength can reach 36.8MPa in 28 days.
Embodiment 3: a kind of process for low-temperature calcining cement clinker aggregate.Weight is consisted of the each component weighing of 50% slag, 20.5% coal gangue, 23% Wingdale, 5% chromium slag, 1.5% phosphogypsum, add an amount of coal, mix levigate extremely tailing over and be not more than 10% by 0.08mm, be blown into the fluidizing furnace internal combustion, hot fluidizing velocity is 3.2 a meters/paper money, 980 ℃ of fluidized-bed temperature controls, raw material are calcined in stove and are not less than 20 minutes, the grog that calcining is good cools off rapidly, and is levigate to tailing over less than 6% by 0.08mm, and carries out physical and mechanical property mensuration by standard method.Performances such as the low heat cement grog stability that calcining is good is qualified, and is against corrosion are good, and ultimate compression strength can reach 36.4MPa in 28 days.
Embodiment 4: a kind of process for low-temperature calcining cement clinker aggregate.Get the each component that weight consists of 39.5% coal gangue, 49.5 Wingdales, 5% chromium slag, 6% yellow phosphorus slag, add an amount of coal, mix levigate extremely tailing over and be not more than 10% by 0.08mm, be blown into the fluidizing furnace internal combustion, hot fluidizing velocity is 3.1 a meters/paper money, and fluidized-bed temperature is controlled at 960 ℃, raw material are calcined in stove and are no less than 20 minutes, the grog that calcining is good cools off rapidly, and is levigate to tailing over less than 6% by 0.08mm, and carries out physical and mechanical property mensuration by standard method.Performances such as the low heat cement grog stability that calcining is good is qualified, and is against corrosion are good, and ultimate compression strength can reach 35.4MPa in 28 days.
Subordinate list 1: typical Portland clinker chemical composition
| Sample | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | MgO | SO 3 | Loss on ignition |
| C | 19.90 | 63.38 | 6.36 | 4.37 | 1.93 | 2.20 | 1.31 |
| D | 21.29 | 63.63 | 5.92 | 3.82 | 1.29 | 1.75 | 1.32 |
Subordinate list 2: low heat cement grog chemical composition of the present invention
| Sample | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | MgO | SO 3 | Loss on ignition |
| A | 28.1 | 50.9 | 8.5 | 3.4 | 3.3 | 3.1 | 1.41 |
| B | 29.7 | 49.8 | 9.1 | 3.2 | 3.9 | 2.3 | 1.52 |
Claims (3)
1, a kind of process for low-temperature calcining cement clinker aggregate is characterized in that comprising:
A, with (weight %) 20-60% Wingdale,
The mixture of one or more in 30-71% flyash, coal gangue, slag, the low grade coal.
The composite mineralizer that 4-7% chromium slag and 1-3% phosphogypsum or 3-10% yellow phosphorus slag are formed.
And an amount of coal mixes levigate;
B, in fluidizing furnace, fluidized-bed or other cement burning plants, be 940-1100 ℃ of down calcining 20-40 minute in temperature;
C, cooling.
2, by the described process for low-temperature calcining cement clinker aggregate of claim 1, it is characterized in that preferable calcining temperature is 980-1100 ℃.
3, by claim 1 or 2 described process for low-temperature calcining cement clinker aggregate, it is characterized in that the preferable of composite mineralizer consists of: 5% chromium slag and 1.5% phosphogypsum or 7% yellow phosphorus slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111987A CN1041195C (en) | 1992-11-15 | 1992-11-15 | Process for low-temperature calcining cement clinker aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111987A CN1041195C (en) | 1992-11-15 | 1992-11-15 | Process for low-temperature calcining cement clinker aggregate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072159A true CN1072159A (en) | 1993-05-19 |
| CN1041195C CN1041195C (en) | 1998-12-16 |
Family
ID=4945680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92111987A Expired - Fee Related CN1041195C (en) | 1992-11-15 | 1992-11-15 | Process for low-temperature calcining cement clinker aggregate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1041195C (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043338C (en) * | 1993-07-17 | 1999-05-12 | 易贤 | Quick setting high strength low heat-generating gypsum slag cement |
| CN100369850C (en) * | 2006-10-20 | 2008-02-20 | 昆明理工大学 | Comprehensive utilization method for coal gangue and phosphogypsum |
| CN102329089A (en) * | 2011-08-11 | 2012-01-25 | 邓州中联水泥有限公司 | Cement clinker prepared from vanadium slag |
| WO2013078839A1 (en) | 2011-11-28 | 2013-06-06 | 泸州兰良水泥有限公司 | Method for calcining blending material with high activity by feeding outside kiln head and equipment thereof |
| WO2016134552A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| WO2016134551A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| CN106277865A (en) * | 2015-06-15 | 2017-01-04 | 中国葛洲坝集团水泥有限公司 | A kind of preparation method of Portland clinker |
| CN106630697A (en) * | 2016-12-14 | 2017-05-10 | 华润水泥技术研发有限公司 | Cement clinker and production method thereof |
| CN106698982A (en) * | 2016-12-13 | 2017-05-24 | 刘勇英 | Cement clinker and preparation method and application thereof |
| CN108863117A (en) * | 2018-08-10 | 2018-11-23 | 杭州中齐新材料科技有限公司 | A kind of low temperature sintered high-strength degree cement and preparation method thereof |
| CN109896770A (en) * | 2019-04-19 | 2019-06-18 | 武汉源锦建材科技有限公司 | A kind of concrete intensifier |
| CN112429985A (en) * | 2020-12-03 | 2021-03-02 | 四川嘉华锦屏特种水泥有限责任公司 | Moderate heat portland cement prepared by utilizing industrial waste residues and preparation method thereof |
| CN114853374A (en) * | 2022-05-23 | 2022-08-05 | 安徽海螺集团有限责任公司 | Application of phosphogypsum as mineralizing agent and chromium reducing agent in preparation of portland cement clinker |
| CN115448620A (en) * | 2022-10-28 | 2022-12-09 | 辽宁银盛水泥集团有限公司 | High-performance cement using waste residues and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1029470C (en) * | 1990-10-06 | 1995-08-09 | 武汉工业大学 | Technology for electric generation with coal gangue while production of early strength cement |
| CN1028984C (en) * | 1991-01-16 | 1995-06-21 | 中国建筑材料科学研究院水泥科学研究所 | Producing bonding cement by fluidized bed boiler calcined marlite |
-
1992
- 1992-11-15 CN CN92111987A patent/CN1041195C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043338C (en) * | 1993-07-17 | 1999-05-12 | 易贤 | Quick setting high strength low heat-generating gypsum slag cement |
| CN100369850C (en) * | 2006-10-20 | 2008-02-20 | 昆明理工大学 | Comprehensive utilization method for coal gangue and phosphogypsum |
| CN102329089A (en) * | 2011-08-11 | 2012-01-25 | 邓州中联水泥有限公司 | Cement clinker prepared from vanadium slag |
| WO2013078839A1 (en) | 2011-11-28 | 2013-06-06 | 泸州兰良水泥有限公司 | Method for calcining blending material with high activity by feeding outside kiln head and equipment thereof |
| WO2016134552A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| WO2016134551A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| CN106277865A (en) * | 2015-06-15 | 2017-01-04 | 中国葛洲坝集团水泥有限公司 | A kind of preparation method of Portland clinker |
| CN106277865B (en) * | 2015-06-15 | 2018-04-10 | 中国葛洲坝集团水泥有限公司 | A kind of preparation method of Portland clinker |
| CN106698982A (en) * | 2016-12-13 | 2017-05-24 | 刘勇英 | Cement clinker and preparation method and application thereof |
| CN106630697A (en) * | 2016-12-14 | 2017-05-10 | 华润水泥技术研发有限公司 | Cement clinker and production method thereof |
| CN106630697B (en) * | 2016-12-14 | 2019-04-19 | 华润水泥技术研发有限公司 | A kind of clinker and its production method |
| CN108863117A (en) * | 2018-08-10 | 2018-11-23 | 杭州中齐新材料科技有限公司 | A kind of low temperature sintered high-strength degree cement and preparation method thereof |
| CN108863117B (en) * | 2018-08-10 | 2021-06-22 | 宁夏青铜峡水泥股份有限公司 | Low-temperature sintered high-strength cement and preparation method thereof |
| CN109896770A (en) * | 2019-04-19 | 2019-06-18 | 武汉源锦建材科技有限公司 | A kind of concrete intensifier |
| CN109896770B (en) * | 2019-04-19 | 2021-08-20 | 武汉源锦建材科技有限公司 | Concrete reinforcing agent |
| CN112429985A (en) * | 2020-12-03 | 2021-03-02 | 四川嘉华锦屏特种水泥有限责任公司 | Moderate heat portland cement prepared by utilizing industrial waste residues and preparation method thereof |
| CN114853374A (en) * | 2022-05-23 | 2022-08-05 | 安徽海螺集团有限责任公司 | Application of phosphogypsum as mineralizing agent and chromium reducing agent in preparation of portland cement clinker |
| CN114853374B (en) * | 2022-05-23 | 2023-03-17 | 安徽海螺集团有限责任公司 | Application of phosphogypsum as mineralizing agent and chromium reducing agent in preparation of portland cement clinker |
| CN115448620A (en) * | 2022-10-28 | 2022-12-09 | 辽宁银盛水泥集团有限公司 | High-performance cement using waste residues and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041195C (en) | 1998-12-16 |
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