CN1958501A - Slag composite activated grinding aids, and preparation method - Google Patents
Slag composite activated grinding aids, and preparation method Download PDFInfo
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- CN1958501A CN1958501A CN 200610125084 CN200610125084A CN1958501A CN 1958501 A CN1958501 A CN 1958501A CN 200610125084 CN200610125084 CN 200610125084 CN 200610125084 A CN200610125084 A CN 200610125084A CN 1958501 A CN1958501 A CN 1958501A
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- reducer
- trolamine
- calcium hydroxide
- saturated solution
- slag
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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
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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)
- Disintegrating Or Milling (AREA)
Abstract
This invention relates to a method for preparing composite active grinding aid for slag. The composite active grinding aid is composed of: triethanolamine 10-40 wt.%, polycarboxylic acid water reducer 10-40 wt.%, and saturated solution of calcium hydroxide 20-50 wt.%. The method comprises: mixing the raw materials, and activating by magnetization equipment. The composite active grinding aid can improve the fineness and activity of slag, increase grinding efficiency by 10-20%, and increase 3-day strength by 2-3 MPa and 28-day strength by 4-8 MPa. Besides, the composite active grinding aid has such advantages as good grinding effect, low energy consumption and simple production process.
Description
Technical field
The present invention relates to slag composite activated grinding aids that uses in a kind of manufacture of cement and preparation method thereof, belong to the grinding aid additive agent field in the production of cement and gelling material.
Background technology
Slag is the byproduct when smelting the pig iron, has higher lateral reactivity, and the annual slag output of China has more than 100,000,000 ton, if these slags can not get effective utilization, will inevitably cause pollution difficult to the appraisal to environment, also will cause huge energy dissipation.At present, slag is as the blended material of cement with in order to outside the operating mine slag cement, and particularly ground slag has become one of requisite component of preparation high performance concrete as mineral admixture.But slag in use exists grindability poor, and early strength is on the low side, has restricted scoriaceous applying.Can improve mill efficiency though prolong the grinding time, but increased power consumption, increased the grinding cost, in scoriaceous grinding process,, produce the difference of electron density in grinding process simultaneously because material is subjected to the influence of various power to cause the electrovalent bond of granule interior to rupture, form a series of staggered active sites in the section both sides, they attract each other, make surface of fracture trend towards compound and material is reunited, thereby grinding output and quality are descended significantly.For reducing the grinding energy consumption, stop the healing of slag surface of fracture and reducing agglomeration, using grinding aid is the most simple way, use suitable grinding aid can improve mill efficiency about 20%, Research on cement additive and use abroad just begin as far back as the thirties in last century, carried out extensive work, applied for many patents, domesticly just studied and use from the fifties.At present both at home and abroad institute's grinding aid of study and using is most is worth expensively, and the source is short, and not remarkable to the slag grinding-aid effect, to slag properties do not have improvement or the improvement effect little, thereby generally apply and be restricted.
Summary of the invention
The object of the present invention is to provide a kind of grinding-aid effect good, energy-conservation, can improve active slag composite activated grinding aids of slag and preparation method thereof.
To achieve these goals, technical scheme of the present invention is: a kind of slag composite activated grinding aids, it is characterized in that it is mainly made through the magnetizing assembly activation treatment by trolamine, polycarboxylate water-reducer and the mixing of calcium hydroxide saturated solution raw material, the shared mass percent of each raw material is: trolamine 10-40, polycarboxylate water-reducer 10-40, calcium hydroxide saturated solution 20-50.
Above-mentioned trolamine is the technical grade trolamine.
Above-mentioned polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1.
Above-mentioned calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (10 ℃-40 ℃) under the natural temperature.
The preparation method of above-mentioned a kind of slag composite activated grinding aids is characterized in that it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 10-40, polycarboxylate water-reducer 10-40, calcium hydroxide saturated solution 20-50 choose trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby;
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product after through the magnetizing assembly activation.
Above-mentioned through magnetizing assembly activatory condition is: magneticstrength is 750-850mT, and flow rate of liquid is 0.5-1.5m/s, and magnetizing time is 10-30s.
A kind of application of slag composite activated grinding aids: incorporation is the 0.01%-0.05% of slag quality, and its addition manner is for spraying in the grinding machine by high-efficiency atomizer by setting volume.
The invention has the beneficial effects as follows:
1, a kind of slag composite activated grinding aids of the present invention adopts trolamine, polycarboxylate water-reducer and compound with the calcium hydroxide saturated solution, and activation forms through magnetizing assembly then; This composite activated grinding aids is adsorbed on particle surface shielding particulate surface residual electric charge, prevents the coalescent of powder, stops section to overlap, and has reduced agglomeration, thereby has helped improving the fineness of slag powders; Simultaneously, the activity of this composite activated grinding aids energy exciting slag cement, the hydration rate of raising slag cement promotes further densification of hardened cement paste.Therefore, this product can grinding aid again can the activated slag activity, can improve slag fineness and activity, grinding-aid effect is good; Can improve slag milling shopwork environment after using a kind of slag composite activated grinding aids of the present invention, have and to reduce power consumption, improve output, reduce dust from flying and effectively improve the active characteristics of slag; Can improve mill efficiency 10-20%, improve three days intensity 2-3MPa, 28 days intensity 4-8MPa.
2, this products material source is sufficient, and production technique is simple, can obtain good economic benefit and social benefit, thereby is easy to promote the use of in Cement industry, has good popularizing application prospect.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
A kind of preparation method of slag composite activated grinding aids, it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 40, polycarboxylate water-reducer 20, calcium hydroxide saturated solution 40 are chosen trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby; Described trolamine is the technical grade trolamine, and described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1, and described calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (20 ℃) under the natural temperature.
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product (a kind of slag composite activated grinding aids) after through the magnetizing assembly activation.Activation condition is that magneticstrength is 800mT, and flow rate of liquid is 1m/s, and magnetizing time is 20s.
Embodiment 2:
A kind of preparation method of slag composite activated grinding aids, it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 30, polycarboxylate water-reducer 35, calcium hydroxide saturated solution 35 are chosen trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby; Described trolamine is the technical grade trolamine, and described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1, and described calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (20 ℃) under the natural temperature.
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product (a kind of slag composite activated grinding aids) after through the magnetizing assembly activation.Activation condition is that magneticstrength is 800mT, and flow rate of liquid is 1m/s, and magnetizing time is 20s.
Embodiment 3:
A kind of preparation method of slag composite activated grinding aids, it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 15, polycarboxylate water-reducer 40, calcium hydroxide saturated solution 45 are chosen trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby; Described trolamine is the technical grade trolamine, and described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1, and described calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (20 ℃) under the natural temperature.
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product (a kind of slag composite activated grinding aids) after through the magnetizing assembly activation.Activation condition is that magneticstrength is 800mT, and flow rate of liquid is 1m/s, and magnetizing time is 20s.
Use the 5kg test mill, with the 5kg slag, this slag composite activated grinding aids of 1.5g mixes in the slag, grinding 45 minutes.Except that fineness and Blain specific surface were test pure slag sample, consumptive use of water normal consistence, time of coagulation, strength test all were mixtures of test slag and silicate cement, and the compositely proportional of slag and cement is 1: 1.
Gained slag cement physical and mechanical property sees Table 1.
Table 1
| 80um tails over/% | Blain specific surface/m 2kg -1 | Consumptive use of water normal consistence/% | Time of coagulation/min | Folding strength/MPa | Ultimate compression strength/MPa | ||||
| Initial set | Final set | 3d | 28d | 3d | 28d | ||||
| Blank sample | 4.5 | 439 | 30.0 | 190 | 280 | 4.0 | 9.5 | 18.7 | 52.0 |
| Embodiment 1 | 1.8 | 502 | 29.8 | 180 | 265 | 4.9 | 10.5 | 21.6 | 59.6 |
| Embodiment 2 | 1.7 | 519 | 29.8 | 185 | 275 | 4.6 | 10.3 | 20.9 | 58.8 |
| Embodiment 3 | 1.4 | 528 | 29.8 | 185 | 270 | 4.4 | 10.2 | 20.7 | 56.2 |
As can be known from the above table, this slag composite activated grinding aid can improve scoriaceous grinding fineness, increases scoriaceous specific surface area, and the intensity in slag cement each length of time is improved, and early strength can improve 2-3MPa, and intensity can improve 4-8MPa in 28 days.Simultaneously, add this slag composite activated grinding aid after, the consumptive use of water normal consistence of cement and the variation of time of coagulation are very little, meet national standard.
During use, preferably the addition manner of the slag composite activated grinding aid that directly the present invention is provided is for spraying in the grinding machine by high-efficiency atomizer by optimizing volume, as far as possible near the grinding machine spout.
Embodiment 4:
A kind of preparation method of slag composite activated grinding aids, it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 10, polycarboxylate water-reducer 40, calcium hydroxide saturated solution 50 are chosen trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby; Described trolamine is the technical grade trolamine, and described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1, and described calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (10 ℃) under the natural temperature.
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product after through the magnetizing assembly activation; Described process magnetizing assembly activatory condition is: magneticstrength is 750mT, and flow rate of liquid is 0.5m/s, and magnetizing time is 10s.
The application of above-mentioned a kind of slag composite activated grinding aids: incorporation is 0.01% of a slag quality, and its addition manner is for spraying in the grinding machine by high-efficiency atomizer by setting volume.
Embodiment 5:
A kind of preparation method of slag composite activated grinding aids, it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 40, polycarboxylate water-reducer 10, calcium hydroxide saturated solution 50 are chosen trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby; Described trolamine is the technical grade trolamine, and described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1, and described calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (30 ℃) under the natural temperature.
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product after through the magnetizing assembly activation; Described process magnetizing assembly activatory condition is: magneticstrength is 800mT, and flow rate of liquid is 1m/s, and magnetizing time is 20s.
The application of above-mentioned a kind of slag composite activated grinding aids: incorporation is 0.05% of a slag quality, and its addition manner is for spraying in the grinding machine by high-efficiency atomizer by setting volume.
Embodiment 6:
A kind of preparation method of slag composite activated grinding aids, it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 40, polycarboxylate water-reducer 40, calcium hydroxide saturated solution 20 are chosen trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby; Described trolamine is the technical grade trolamine, and described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1, and described calcium hydroxide saturated solution is the calcium hydroxide saturated solution of (40 ℃) under the natural temperature.
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product after through the magnetizing assembly activation; Described process magnetizing assembly activatory condition is: magneticstrength is 850mT, and flow rate of liquid is 1.5m/s, and magnetizing time is 30s.
The application of above-mentioned a kind of slag composite activated grinding aids: incorporation is 0.02% of a slag quality, and its addition manner is for spraying in the grinding machine by high-efficiency atomizer by setting volume.
Claims (7)
1. slag composite activated grinding aids, it is characterized in that it is mainly made through the magnetizing assembly activation treatment by trolamine, polycarboxylate water-reducer and the mixing of calcium hydroxide saturated solution raw material, the shared mass percent of each raw material is: trolamine 10-40, polycarboxylate water-reducer 10-40, calcium hydroxide saturated solution 20-50.
2. a kind of slag composite activated grinding aids according to claim 1 is characterized in that: described trolamine is the technical grade trolamine.
3. a kind of slag composite activated grinding aids according to claim 1 is characterized in that: described polycarboxylate water-reducer is commodity polycarboxylate water-reducer PC-1.
4. a kind of slag composite activated grinding aids according to claim 1 is characterized in that: described calcium hydroxide saturated solution is the calcium hydroxide saturated solution under the natural temperature.
5. the preparation method of a kind of slag composite activated grinding aids as claimed in claim 1 is characterized in that it comprises the steps:
1) choosing of raw material: be by the shared mass percent of each raw material: trolamine 10-40, polycarboxylate water-reducer 10-40, calcium hydroxide saturated solution 20-50 choose trolamine, polycarboxylate water-reducer and calcium hydroxide saturated solution raw material, and be standby;
2) earlier trolamine is joined in the calcium hydroxide saturated solution, after stirring, add polycarboxylate water-reducer, leave standstill after mixing, leach filtrate behind the throw out and be product after through the magnetizing assembly activation.
6. the preparation method of a kind of slag composite activated grinding aids according to claim 5 is characterized in that: describedly through magnetizing assembly activatory condition be: magneticstrength is 750-850mT, and flow rate of liquid is 0.5-1.5m/s, and magnetizing time is 10-30s.
7. the application of a kind of slag composite activated grinding aids as claimed in claim 1 is characterized in that: incorporation is the 0.01%-0.05% of slag quality, and its addition manner is for spraying in the grinding machine by high-efficiency atomizer by setting volume.
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| CN101948268A (en) * | 2010-10-12 | 2011-01-19 | 衡阳市银利实业有限公司 | Composite concrete grinding-assistant reinforcing agent |
| CN102351460A (en) * | 2011-07-19 | 2012-02-15 | 孙贤文 | Steel slag grinding aid and preparation method thereof |
| CN101434458B (en) * | 2008-12-16 | 2012-04-25 | 上海海笠工贸有限公司 | Preparation of modified superfine graining blast-furnace cinder micro-powder and use thereof |
| CN102643629A (en) * | 2012-04-06 | 2012-08-22 | 湖北富邦科技股份有限公司 | Grinding aid for phosphate rock |
| CN102745917A (en) * | 2012-06-29 | 2012-10-24 | 酒钢(集团)宏达建材有限责任公司 | Slag vertical mill grinding assisting activating agent and its compounding method |
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| CN101434458B (en) * | 2008-12-16 | 2012-04-25 | 上海海笠工贸有限公司 | Preparation of modified superfine graining blast-furnace cinder micro-powder and use thereof |
| CN101948268B (en) * | 2010-10-12 | 2012-11-28 | 衡阳市银利实业有限公司 | Composite concrete grinding-assistant reinforcing agent |
| CN101948268A (en) * | 2010-10-12 | 2011-01-19 | 衡阳市银利实业有限公司 | Composite concrete grinding-assistant reinforcing agent |
| CN102351460A (en) * | 2011-07-19 | 2012-02-15 | 孙贤文 | Steel slag grinding aid and preparation method thereof |
| CN102643629A (en) * | 2012-04-06 | 2012-08-22 | 湖北富邦科技股份有限公司 | Grinding aid for phosphate rock |
| CN102745917B (en) * | 2012-06-29 | 2013-10-30 | 酒钢(集团)宏达建材有限责任公司 | Slag vertical mill grinding assisting activating agent and its compounding method |
| CN102745917A (en) * | 2012-06-29 | 2012-10-24 | 酒钢(集团)宏达建材有限责任公司 | Slag vertical mill grinding assisting activating agent and its compounding method |
| CN103232265A (en) * | 2013-05-07 | 2013-08-07 | 郑州大学 | Preparation and application methods of water reducer under magnetic effect |
| CN104478276A (en) * | 2014-11-19 | 2015-04-01 | 沈阳建筑大学 | Granulated blast furnace slag liquid composite grinding aid |
| CN107638959A (en) * | 2017-08-08 | 2018-01-30 | 中国地质科学院郑州矿产综合利用研究所 | Flotation method for inhibiting silicate gangue minerals in fluorite ores |
| CN107638959B (en) * | 2017-08-08 | 2020-08-07 | 中国地质科学院郑州矿产综合利用研究所 | Flotation method for inhibiting silicate gangue minerals in fluorite ores |
| CN108405082A (en) * | 2018-03-07 | 2018-08-17 | 鞍钢集团矿业有限公司 | It adds grinding aid calcium oxide and carries out magnetic iron ore primary grinding technique |
| CN110171939A (en) * | 2019-04-11 | 2019-08-27 | 武汉理工大学 | A kind of sial phase chaotropic agent and its preparation method and application |
| CN110171939B (en) * | 2019-04-11 | 2021-09-21 | 武汉理工大学 | Silicon-aluminum phase promoter and preparation method and application thereof |
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