CN100999392A - Preparation method of silicate cement clinker - Google Patents

Preparation method of silicate cement clinker Download PDF

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Publication number
CN100999392A
CN100999392A CNA200610161562XA CN200610161562A CN100999392A CN 100999392 A CN100999392 A CN 100999392A CN A200610161562X A CNA200610161562X A CN A200610161562XA CN 200610161562 A CN200610161562 A CN 200610161562A CN 100999392 A CN100999392 A CN 100999392A
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CN
China
Prior art keywords
raw material
preparation
pellet
phos
gypsum
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.)
Pending
Application number
CNA200610161562XA
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Chinese (zh)
Inventor
姚小牛
贺桂房
朱家旺
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.)
Wuhu Di Gang Jin Xin Cement (grinding) Co Ltd
Original Assignee
Wuhu Di Gang Jin Xin Cement (grinding) Co Ltd
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 Wuhu Di Gang Jin Xin Cement (grinding) Co Ltd filed Critical Wuhu Di Gang Jin Xin Cement (grinding) Co Ltd
Priority to CNA200610161562XA priority Critical patent/CN100999392A/en
Publication of CN100999392A publication Critical patent/CN100999392A/en
Pending legal-status Critical Current

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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
    • 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

Abstract

This invention relates to a silicate cement preparation. A: according to weight, it includes the following raw materials: limestone 70-80 shares, clay 5-6 shares, shale 2.5-3.5, 1.5-2.5 fluorite, phos-gypsum 3.5-4.5, coal 10-15. B: mix and grind the materials described in (A), add water into the ball, and then the ball into the kiln for burning, cooling to gain cement. This invention compares with existing technologies, use industrial waste phos-gypsum as ingredients of compound mineralizer to solve problem of environment pollution caused by a large number of phos-gypsum, change phos-gypsum waste to treasure. Meanwhile, through increase content of compound mineralizer, reduce the energy consumption, has very great significance at today.

Description

A kind of preparation method of Portland clinker
Technical field
The invention belongs to this technical field of Portland clinker preparation method, belong to this technical field of high silicon and low iron Portland clinker especially.
Background technology
China's Portland clinker mostly adopts low silicon high ferro batching to produce, though this proportion scheme grog is goodlooking, because of low silicon rate causes the silicate minerals actual content on the low side, fcao content is higher in addition, cause early strength not high, strength growth rate was also low in 28 days.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of Portland clinker of high silicon and low iron.
The technical scheme of technical solution problem of the present invention is: A: the composition part preparation raw material that comprise following weight ratio:
Wingdale 70-80
Clay 5-6
Shale 2.5-3.5
Fluorite 1.5-2.5
Phosphogypsum 3.5-4.5
Coal 10-15
B: raw material combined grinding to the 0.1 millimeter square hole sieve described in (A) tailed over be no more than 8% raw material powder, the raw material powder is gone in the pan-pelletizer after stirring, the water balling-up that adds 12-13%, wherein the pellet granularity is the 5-12 millimeter, pellet weight 500-600 gram/, then pellet is gone into the kiln calcining, the klining temperature is controlled at 1500-1600 ℃, in the stagnant required residence time of height is 10-15 minute, but gets cement clinker behind the cooling pellet.
Preferred preparation raw material ratio is:
Wingdale 73-75
Clay 5.2-5.8
Shale 2.8-3.2
Fluorite 1.8-2.2
Phosphogypsum 3.8-4.0
Coal 12-15
The present invention utilizes fluorite and industrial residue phosphogypsum to prepare burden as composite mineralizer, strengthen the volume of composite mineralizer, liquid phase is occurred in kiln in advance, can significantly reduce the heat of joining of kiln, also make pellet complete reaction as far as possible in kiln, reduce the content of FCaO in the grog, promote carrying out smoothly of solid state reaction; On the other hand, unnecessary fluorite can also carry out chemical reaction with the phosphorus in the phosphogypsum, eliminates its disadvantageous effect to cement clinker.
In addition, when being heated to 1500-1600 ℃, the high reactivity vitreum that is in the steady state that is situated between can discharge heat of crystallization, causes the effect that excites heat in pellet inside, again because of containing a large amount of CaO, SiO in the phosphogypsum 2Contour active ingredient does not all need heat dissipation can participate in chemical reaction directly again, has effectively reduced energy consumption.
The present invention compared with prior art utilizes the composition of industrial residue phosphogypsum as composite mineralizer, has solved a large amount of phosphogypsums to the pollution that environment caused, and phosphogypsum is turned waste into wealth.Simultaneously,, reduced the energy consumption of product,, had very significant meaning in energy-intensive today by improving the volume of composite mineralizer.
Embodiment:
Embodiment 1: get 7.0 tons in Wingdale, 0.5 ton of clay, 0.25 ton in shale, 0.15 ton in fluorite, 0.35 ton of phosphogypsum, coal and prepare burden for 1 ton, combined grinding to 0.1 millimeter square hole sieve tails over and is no more than 8% raw material powder, the raw material powder is gone in the pan-pelletizer after stirring, the water balling-up that adds 1.2 tons, wherein the pellet granularity is the 5-12 millimeter, pellet weight 500-600 gram/, then pellet is gone into the kiln calcining, the klining temperature is controlled at 1500-1600 ℃, in the stagnant required residence time of height is 15 minutes, but gets cement clinker behind the cooling pellet.
Embodiment 2: outside 1.2 tons in 7.3 tons in the delime stone, 0.52 ton of clay, 0.28 ton in shale, 0.18 ton in fluorite, 0.38 ton of phosphogypsum, coal, all the other are identical with embodiment 1.
Embodiment 3: outside 1.5 tons in 7.5 tons in the delime stone, 0.58 ton of clay, 0.32 ton in shale, 0.22 ton in fluorite, 0.4 ton of phosphogypsum, coal, all the other are identical with embodiment 1.
Embodiment 4: outside 1.5 tons in 8.0 tons in the delime stone, 0.5 ton of clay, 0.35 ton in shale, 0.25 ton in fluorite, 0.4 ton of phosphogypsum, coal, all the other are identical with embodiment 1.
The present invention tests by GB175-1999.
Table 1 is former, the chemistry of fuel analysis
Title IL SiO 2 Al 2O 3 Fe 2O 3 CaO MgO CaF 2 SO 3 Total value
Wingdale 41.01 3.65 1.07 0.77 52.39 0.83 99.72
Clay 5.49 68.34 17.15 6.22 1.07 0.77 99.04
Fluorite 6.49 40.91 10.39 0.51 1.07 0.51 38.18 98.06
Phosphogypsum 12.6 3.65 16.46 0.57 22.36 1.28 40.82 97.74
The rock page or leaf 2.67 81.39 16.48 1.78 37.78 9.49 95.58
Coal 39.07 28.36 11.93 7.85 3.14 5.21 95.56
Proximate analysis of coal: fugitive constituent 7.93%, ash 34.76%, fixed carbon 57.02%, calorific value 4819.52Kal.
Table 2: machine shaft kiln platform produces contrast table
Figure A20061016156200051
Table 2 shows, compares with 32.5 Portland cements during the average platform of the present invention and improved 15-20%, joins heat simultaneously and also reduces to 800-1000 Kal by 1000 Kal.
Table 3: product performance contrast table
Title Fineness Specific surface area Denseness Initial set Final set Stability
Embodiment 1 4 340 23 2∶35 3∶40 Qualified
Embodiment 2 4 340 23 2∶36 3∶30 Qualified
Embodiment 3 4 340 23 2∶35 3∶20 Qualified
Embodiment 4 4 340 23 2∶35 3∶40 Qualified
32.5 Portland cement 4 340 23 2∶40 4∶00 Qualified
Title 3 days anti-foldings 28 days anti-foldings Resistance to compression in 3 days Resistance to compression in 28 days
Embodiment 1 5.1 8.8 30.0 56.5
Embodiment 2 5.2 9.0 30.0 57.0
Embodiment 3 5.3 9.2 31.0 58.0
Embodiment 4 5.2 8.9 29.0 57.5
32.5 Portland cement 4.6 8.1 26 50
Table 3 shows that early strength of the present invention and 28 days strength growth rates all are higher than existing 32.5 Portland cements.

Claims (2)

1, a kind of preparation method of Portland clinker is characterized in that:
A: the composition part preparation raw material that comprise following weight ratio:
Wingdale 70-80
Clay 5-6
Shale 2.5-3.5
Fluorite 1.5-2.5
Phosphogypsum 3.5-4.5
Coal 10-15
B: raw material combined grinding to the 0.1 millimeter square hole sieve described in (A) tailed over be no more than 8% raw material powder, the raw material powder is gone in the pan-pelletizer after stirring, the water balling-up that adds 12-13%, wherein the pellet granularity is the 5-12 millimeter, pellet weight 500-600 gram/, then pellet is gone into the kiln calcining, the klining temperature is controlled at 1500-1600 ℃, in the stagnant required residence time of height is 10-15 minute, but gets cement clinker behind the cooling pellet.
2, the preparation method of a kind of Portland clinker according to claim 1 is characterized in that: preparation raw material weight ratio is:
Wingdale 73-75
Clay 5.2-5.8
Shale 2.8-3.2
Fluorite 1.8-2.2
Phosphogypsum 3.8-4.0
Coal 12-15.
CNA200610161562XA 2006-12-26 2006-12-26 Preparation method of silicate cement clinker Pending CN100999392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA200610161562XA CN100999392A (en) 2006-12-26 2006-12-26 Preparation method of silicate cement clinker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA200610161562XA CN100999392A (en) 2006-12-26 2006-12-26 Preparation method of silicate cement clinker

Publications (1)

Publication Number Publication Date
CN100999392A true CN100999392A (en) 2007-07-18

Family

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Family Applications (1)

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CNA200610161562XA Pending CN100999392A (en) 2006-12-26 2006-12-26 Preparation method of silicate cement clinker

Country Status (1)

Country Link
CN (1) CN100999392A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013058931A1 (en) * 2011-10-17 2013-04-25 Verdecem, Inc. Solid state combustion synthesis of nano to macroscale portland cement and other high value nano particles
CN112159132A (en) * 2020-10-09 2021-01-01 宁波益能机械科技有限公司 Preparation process of composite portland cement
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
CN115368038A (en) * 2022-08-25 2022-11-22 安徽海螺制剂工程技术有限公司 Phosphogypsum-based mineralizer doped with polysilicone polymer and preparation method of cement clinker thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013058931A1 (en) * 2011-10-17 2013-04-25 Verdecem, Inc. Solid state combustion synthesis of nano to macroscale portland cement and other high value nano particles
CN112159132A (en) * 2020-10-09 2021-01-01 宁波益能机械科技有限公司 Preparation process of composite portland cement
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
CN115368038A (en) * 2022-08-25 2022-11-22 安徽海螺制剂工程技术有限公司 Phosphogypsum-based mineralizer doped with polysilicone polymer and preparation method of cement clinker thereof
CN115368038B (en) * 2022-08-25 2023-07-04 安徽海螺制剂工程技术有限公司 Phosphogypsum-based mineralizer doped with polysiliconol polymer and preparation method of cement clinker thereof

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