CN107382117A - A kind of composite modified ardealite setting retarder for cement of perlite and low cost cement - Google Patents
A kind of composite modified ardealite setting retarder for cement of perlite and low cost cement Download PDFInfo
- Publication number
- CN107382117A CN107382117A CN201710847746.XA CN201710847746A CN107382117A CN 107382117 A CN107382117 A CN 107382117A CN 201710847746 A CN201710847746 A CN 201710847746A CN 107382117 A CN107382117 A CN 107382117A
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- China
- Prior art keywords
- cement
- perlite
- ardealite
- retarder
- parts
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- 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.)
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Classifications
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- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of composite modified ardealite setting retarder for cement of perlite and low cost cement.First, directly it is mixed evenly by a certain percentage using ardealite, perlite, a small amount of lime and water, ageing is placed 24 hours, then is prepared into cement retarder pellet through balling-up equipment.Secondly, using perlite to substitute flyash as mixing material, with reference to clinker and above-mentioned modified ardealite retarder, novel low-cost cement is made.For the present invention using abundant natural peral rock as composite modifier, preparation process is simple, without high-temperature calcination, can remove in ardealite more than 97% Leaching Properties of Soluble Phosphorus, solvable phosphorus content is reduced to 0.008%, have obvious modified effect；Natural peral rock reaches conventional criteria as mixing material, the setting time of made cement, thus can save the natural gypsum resource of preciousness and expensive flyash dosage, and then the manufacturing cost of cement is greatly lowered.
Description
Technical field
The present invention relates to regenerated resources technical field of comprehensive utilization, more particularly to a kind of ardealite setting retarder for cement and it is low into
The preparation method of this cement.
Background technology
Ardealite is the byproduct of Wet-process phosphoric acid (WPPA) or the industry of phosphate compound fertilizer, and about 5 can be discharged by often producing 1 ton of phosphoric acid
Ton waste residue.Due to the quick growth development of phosphorous chemical industry industry, ardealite waste material yield also rapid growth.China is maximum in the world
Production of phosphate fertilizer state, while be also maximum ardealite by-product state, it is contemplated that in 2015, China's phosphate industry amount was up to 1.3
Hundred million tons, correspondingly, ardealite discharge capacity will also increase severely therewith.Ardealite main component is identical with the natural gypsum, is all CaSO4
·2H2O, but because ardealite contains titanium pigment, fluorine and free acid and other objectionable impurities, arbitrarily discharge can make to environment
Into serious pollution, high risks are caused to ecological environment.The natural gypsum is substituted using industrial phosphogypsum and is used as cement retarder, no
Only save a large amount of valuable gypsum resources, and turn waste into wealth, cost it is cheap, turn into ardealite discarded object synthesis recycle it is main
Approach.
But industrial phosphogypsum is directly used as cement retarder, sieve sends peak etc. to enter using asphalt waste and lime to ardealite
Gone it is composite modified, obtain better effects.But carbide raw material, asphalt waste exist only in indivedual supporting areas of industry, and in water
It is clay equally to have used flyash mixture on the high side in, thus need further to develop cheap, abundance
Material modified and mixing material, make retarder modified technique and cement preparation technology more simple, in order to production application.
The content of the invention
In order to effectively reduce the objectionable impurities content such as Leaching Properties of Soluble Phosphorus in industrial phosphogypsum, make cement setting time normal, this
Invention provides a kind of perlite composite modified ardealite setting retarder for cement.Meanwhile using aboundresources, cheap natural
The expensive flyash of perlite to substitute adds ardealite that perlite is modified as cement retarder as mixing material, and then
Make new low cost cement.
A kind of composite modified ardealite setting retarder for cement of perlite is made up of the raw material of following weight：Perlite 5-50 parts,
Ardealite 30-70 parts, lime 1-10 parts, water 0.1-0.2 parts, it is well mixed, it is natural into change 24 hours, then prepared through balling-up equipment
Into pellet；During Phosphogypsum as Cement Retarder that the perlite is composite modified, solvable phosphorus content can be effectively reduced, from
0.280% is down to less than 0.01%；The presetting period of cement is set to foreshorten to 280min from 350min, final setting time shortens from 400min
To 320min；It is modified through perlite, the cement setting time that ardealite is prepared as retarder can be made to reach conventional criteria；
The ardealite is that waste material caused by phosphoric acid is produced in Phosphate Fertilizer Industry, and main chemical is dihydrate gypsum, two water stones
The content of cream is 80%-98%；
The perlite mainly contains 72.16% silica（SiO2）, 11.98% alundum (Al2O3)（Al2O3）With 1.88%
Di-iron trioxide（Fe2O3）With 0.82% calcium oxide（CaO）.
Low cost cement based on the composite modified ardealite setting retarder for cement of the perlite by following weight raw material group
Into：Clinker 55-75 parts, perlite 25-35 parts, the composite modified ardealite setting retarder for cement 4-6 parts of perlite；It is described it is low into
This cement uses perlite to substitute costliness flyash, and the ardealite for mixing perlite modification makes the first of cement as retarder
The solidifying time foreshortens to 260-270min, and final setting time foreshortens to 295-305min.
The experimental conditions of the present invention are as follows：
Perlite, ardealite, flyash and lime used in experiment are derived from Shui Dongtaishi retarder Products Co., Ltd of Xuancheng City, day
Right gypsum is derived from Chinese medicines group.It is prepared by raw material：Clinker uses QM-3SP2 planetary ball mills, in turning for 400r/min
Under speed, ball milling 30 to 40 minutes；Perlite is ground using agate mortar, and is sieved（100 mesh）, or use aforesaid way ball milling；
Lime sieves（100 mesh）；Ardealite sieves（100 mesh）；The natural gypsum sieves（100 mesh）；Flyash sieves（100 mesh）.Table 1 is
The chemical composition of involved various experimental raws in the present invention.
Table 1 is the chemical composition and percentage composition of experimental raw（%）
The presence of Leaching Properties of Soluble Phosphorus in ardealite can cause cement setting time abnormal, and bad shadow is caused to cement performance and environment
Ring.The present invention is composite modified to ardealite progress from aboundresources, perlite cheap and easy to get and a small amount of lime, and uses pearl
The higher flyash of rock fictitious hosts, low cost cement is prepared as mixing material.Table 1 is matched somebody with somebody for the modification process of ardealite
Side and its influence to solvable phosphorus content.As shown in Table 1, perlite mainly contains SiO2、Al2O3And Fe2O3Deng, and lime is mainly
CaO, these costs are all the main hydrated minerals tricalcium silicate C of generation cement3S, dicalcium silicate C2S, tricalcium aluminate C3A, iron aluminic acid
Four calcium C4AF active ingredient.The addition of perlite and lime, can dilute reduces solvable phosphorus content, makes HP04 2¯、H2P04¯、
H3PO4Etc. being transformed into phosphate inert mineral, and then cement setting time is set to reach conventional criteria.Meanwhile contrast perlite and powder
Coal ash, it is seen that its SiO2Content is higher, is advantageous to the generation of cement silicate mineral, is highly profitable to improving strength of cement, and
The production cost of cement manufacture can be greatly lowered, thus be expected to be widely popularized as a kind of new technology.
According to GBT23456-2009 ardealite standards, quinoline molybdenum lemon ketone Precipitation Determination ardealite is used in present invention experiment
In solvable phosphorus content.The present invention compared for affecting laws of the different disposal technique to the solvable phosphorus content of ardealite first, be shown in Table
2.Sample number into spectrum：No. 1 with No. 2 samples using the different ardealite sample in new and old two kinds of laboratory；No. 3, No. 4 and No. 5 are adopted
It is No. 1 ardealite.
After 2 different modifications of table in ardealite solvable phosphorus content measurement result
From Table 2, it can be seen that washing process, carbonate-free lime neutralize, perlite lime it is composite modified can be greatly lowered it is solvable
Phosphorus content, and the composite modifying method of the present invention can remove in ardealite more than 97% Leaching Properties of Soluble Phosphorus, be reduced to solvable phosphorus content
0.008%, there is obvious modified effect.
According to GB/T1346-2001 cement normal consistency water consumptions, setting time national standard, the present invention measures difference
Influence of the handling process to cement setting time.Table 3 is affecting laws of the different disposal technique to cement setting time.Control sample
5 is composite modified（Flyash mixture）With the cement setting time of the ardealite of 2 unmodified processing of sample, the presetting period is by 350
Min foreshortens to 280min, and final setting time foreshortens to 320min, composite modified positive effect by 400 min, or even is washed than sample 3
Technique and sample 4 it is lime modified effect it is more preferable.And use perlite as mixing material and substitute flyash, control sample 5 and sample 6, just
15min and 20min is further respectively shortened in solidifying time and final setting time, is more nearly the level of natural gypsum sample 1.
Affecting laws of the different disposal technique of table 3 to cement setting time
The present invention is using abundant natural peral rock as composite modifier and mixing material, and preparation process is simple, without height
Temperature calcining, can effectively reduce solvable phosphorus content, and the setting time of made cement reaches conventional criteria, thus can save preciousness
Natural gypsum resource and expensive flyash dosage, and then the manufacturing cost of cement is greatly lowered.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1
Perlite modified ardealite setting retarder for cement is prepared according to the following weight ratio：Perlite 35kg, the kg of ardealite 60, lime 5
The kg and kg of water 0.18, it is well mixed, it is natural to be prepared into pellet into change 24 hours, then through balling-up equipment；The perlite is composite modified
The solvable phosphorus content of ardealite setting retarder for cement is reduced to 0.008%.
Ardealite is that waste material caused by phosphoric acid is produced in Phosphate Fertilizer Industry, and main chemical is dihydrate gypsum, two water stones
The content of cream is 80%；
Perlite mainly contains 72.16% silica（SiO2）, 11.98% alundum (Al2O3)（Al2O3）With 1.88%
Di-iron trioxide（Fe2O3）With 0.82% calcium oxide（CaO）.
Perlite low cost cement is prepared according to the following weight ratio：The kg of clinker 65, the kg of flyash 30, perlite are modified phosphorus stone
The kg of cream cement retarder 5.The presetting period of the low cost cement is 280min, final setting time 320min.
Embodiment 2
Low cost cement is made using the perlite modified ardealite setting retarder for cement of embodiment 1
Low cost cement is prepared according to the following weight ratio：The kg of clinker 65, the kg of perlite 30, perlite modified ardealite cement retardative
The kg of agent 5.The presetting period of the low cost cement is 265min, final setting time 300min.
Embodiment 3
Perlite modified ardealite setting retarder for cement is prepared according to the following weight ratio：Perlite 5kg, the kg of ardealite 30, the kg of lime 3
With water 0.1kg, it is well mixed, it is natural to be prepared into pellet into change 24 hours, then through balling-up equipment；The composite modified phosphorus stone of the perlite
The solvable phosphorus content of cream cement retarder is reduced to 0.01%.
Low cost cement is made using the perlite modified ardealite setting retarder for cement of embodiment 3, is matched somebody with somebody by following weight ratio
Low cost cement processed：The kg of clinker 55, the kg of perlite 25, the kg of perlite modified ardealite setting retarder for cement 6.The inexpensive water
The presetting period of mud is 310min, final setting time 355min.
Embodiment 4
Perlite modified ardealite setting retarder for cement is prepared according to the following weight ratio：Perlite 50kg, the kg of ardealite 70, lime 3
Kg and water 0.2kg, it is well mixed, it is natural to be prepared into pellet into change 24 hours, then through balling-up equipment；The composite modified phosphorus of the perlite
The solvable phosphorus content of gypsum cement retarder is reduced to 0.009%.
Low cost cement is made using the perlite modified ardealite setting retarder for cement of embodiment 4, is matched somebody with somebody by following weight ratio
Low cost cement processed：The kg of clinker 75, the kg of perlite 35, the kg of perlite modified ardealite setting retarder for cement 6.The inexpensive water
The presetting period of mud is 270min, final setting time 310min.
Claims (3)
1. a kind of composite modified ardealite setting retarder for cement of perlite, it is characterised in that be made up of the raw material of following weight：Pearl
Rock 5-50 parts, ardealite 30-70 parts, lime 1-10 parts, water 0.1-0.2 parts, be well mixed, it is natural into changing 24 hours, then through into
Ball equipment is prepared into pellet；During Phosphogypsum as Cement Retarder that the perlite is composite modified, Leaching Properties of Soluble Phosphorus can be effectively reduced
Content, less than 0.01% is down to from 0.280%；Presetting period of cement is foreshortened to 280min from 350min, final setting time from
400min foreshortens to 320min；It is modified through perlite, the cement setting time that ardealite can be made to be prepared as retarder reaches normal
Rule standard；
The ardealite is that waste material caused by phosphoric acid is produced in Phosphate Fertilizer Industry, and main chemical is dihydrate gypsum, two water stones
The content of cream is 80%-98%；
The perlite mainly contains 72.16% silica, 11.98% alundum (Al2O3) and 1.88% di-iron trioxide
With 0.82% calcium oxide.
2. the composite modified ardealite setting retarder for cement of a kind of perlite according to claim 1, it is characterised in that by following
The raw material composition of weight：35 parts of perlite, 60 parts of ardealite, 5 parts of lime, 0.18 part of water, stir, then be made through nodulizer
The composite modified ardealite setting retarder for cement of spherical perlite, it is natural into change 24 hours.
3. the low cost cement based on the composite modified ardealite setting retarder for cement of perlite described in claim 1, it is characterised in that
It is made up of the raw material of following weight：Clinker 55-75 parts, perlite 25-35 parts, the composite modified ardealite cement of perlite delay
Solidifying agent 4-6 parts；The low cost cement uses perlite to substitute costliness flyash, and mixes the ardealite conduct of perlite modification
Retarder, the presetting period of cement is set to foreshorten to 260-270min, final setting time foreshortens to 295-305min.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100066727 | 2017-01-05 | ||
| CN201710006672 | 2017-01-05 |
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| Publication Number | Publication Date |
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| CN107382117A true CN107382117A (en) | 2017-11-24 |
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| CN201710847746.XA Pending CN107382117A (en) | 2017-01-05 | 2017-09-19 | A kind of composite modified ardealite setting retarder for cement of perlite and low cost cement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981275A (en) * | 2019-12-16 | 2020-04-10 | 宁国市锦泰环保科技有限公司 | Phosphogypsum cement retarder and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176963A (en) * | 2014-08-06 | 2014-12-03 | 宣城市水东泰狮缓凝剂制品有限公司 | Phosphorus gypsum cement retarder |
-
2017
- 2017-09-19 CN CN201710847746.XA patent/CN107382117A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176963A (en) * | 2014-08-06 | 2014-12-03 | 宣城市水东泰狮缓凝剂制品有限公司 | Phosphorus gypsum cement retarder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981275A (en) * | 2019-12-16 | 2020-04-10 | 宁国市锦泰环保科技有限公司 | Phosphogypsum cement retarder and preparation method thereof |
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Application publication date: 20171124 |
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