CN104478328A - High-performance concrete prepared from antimony ore smelting slag and preparation method of high-performance concrete - Google Patents

High-performance concrete prepared from antimony ore smelting slag and preparation method of high-performance concrete Download PDF

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Publication number
CN104478328A
CN104478328A CN201410742304.5A CN201410742304A CN104478328A CN 104478328 A CN104478328 A CN 104478328A CN 201410742304 A CN201410742304 A CN 201410742304A CN 104478328 A CN104478328 A CN 104478328A
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performance concrete
antimony ore
high performance
metallurgical slag
cement
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曾德芳
周赛军
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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Abstract

The invention discloses a high-performance concrete prepared from antimony ore smelting slag and a preparation method of the high-performance concrete. The high-performance concrete is prepared from cement, coal ash, mineral powder, the antimony ore smelting slag, broken stone, a water reducing agent, a cement modifier and water; the mass ratio of such materials as the cement, the coal ash, the mineral powder, the antimony ore smelting slag, the broken stone, the water reducing agent, the cement modifier and the water in the high-performance concrete per cubic meter is 360:(36-42):(72-84):(623-722):(918-1017):4.68:0.05:160. According to the high-performance concrete, the antimony ore smelting slag is used for replacing sand, and the coal ash and the mineral powder are used for replacing partial cement, so that the energy sources and resources can be saved and the antimony ore smelting slag is harmlessly recycled; the high-performance concrete conforms to the industrial policies of national circular economy, and has remarkable economic, social and environmental benefits.

Description

A kind of high performance concrete utilizing antimony ore metallurgical slag to prepare and preparation method thereof
Technical field
The present invention relates to building material field, particularly relate to a kind of high performance concrete utilizing antimony ore metallurgical slag to prepare and preparation method thereof.
Background technology
Antimony as a kind of important national strategy material, mainly for the production of pottery, glass, battery, paint, pyrotechnics, munitions, semi-conductor, sterilant and fire retardant etc.About 4.5 ~ 600 ten thousand tons of world's antimony reserves, reserves in China 3.0 ~ 3.5 hundred ten thousand tons, Main Countries antimony consumption is all very large, about 12 ~ 150,000 tons every year, and China is as No.1 antimony big producing country of the world, and the antimony produced for 2013 and antimony product reach 31.16 ten thousand tons.At present, in the antimony smelting process in the whole nation (especially Hunan, Guizhou, Guangxi), a large amount of antimony ore metallurgical slags is created.Antimony ore metallurgical slag was arbitrarily stacked in the past, under physical environment (comprising weathering, rain etc.) effect, a large amount of heavy metals is released in environment from metallurgical slag, when the main method of pre-treatment antimony ore metallurgical slag sets up cemented tailings backfill or tailings dam to carry out mixing with antimony ore tailings etc. and stack, but this processing mode not only will take a large amount of soil, and a large amount of human and material resources will be consumed antimony ore metallurgical slag is shifted, also there is the danger of dam break when cemented tailings backfill is stacked in addition thus bring safely great hidden danger to soil, water surrounding and the people's lives and property.
In order to eliminate these hidden danger that antimony ore metallurgical slag brings, also be simultaneously that society saves valuable land resources and She Ti enterprise reduces antimony ore metallurgical slag process fund, therefore, how carrying out recycling fully to antimony ore metallurgical slag is people's technical barriers urgently to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide a kind of high performance concrete utilizing antimony ore metallurgical slag to prepare and preparation method thereof, this concrete strength reaches C50 level.
The present invention for solving the problems of the technologies described above adopted scheme is:
A kind of high performance concrete utilizing antimony ore metallurgical slag to prepare, described high performance concrete is by cement, flyash, breeze, antimony ore metallurgical slag, rubble, water reducer, cement modification agent and water are prepared from, and in every cubic metre of high performance concrete, the mass ratio of each material is cement: flyash: breeze: antimony ore metallurgical slag: rubble: water reducer: cement modification agent: water is 360:36 ~ 42:72 ~ 84:623 ~ 722:918 ~ 1017:4.68:0.05:160.
In such scheme, quality/(quality of the quality+rubble of antimony ore metallurgical slag) of described antimony ore metallurgical slag is 0.38 ~ 0.44.
In such scheme, main component: SiO in described antimony ore metallurgical slag 2content is 49.22% ~ 52.17%, Fe 2o 3content is 15.56% ~ 17.38%, Al 2o 3content is 12.43% ~ 15.16%, CaO content is 11.42% ~ 14.08%, and content of MgO is 1.24% ~ 2.15%, K 2o content is 0.94% ~ 1.39%.
In such scheme, described flyash is from thermal power plant, and quality grade is I grade, and selected breeze is S95 level, and described breeze is from granulated blast-furnace slag.
In such scheme, described water reducer is naphthalene series high-efficiency water-reducing agent, and described cement modification agent is T-007 high-molecular cement modification agent.
In such scheme, the particle diameter of described rubble coarse aggregate is the continuous grading of 5mm ~ 26.5mm, crush index value < 10%, faller gill shape≤5%.
In such scheme, described antimony ore metallurgical slag fine aggregate is that drying grinds and forms, and particle diameter≤4.75mm, fineness modulus is 2.6 ~ 3.2.
In such scheme, described water reducer is naphthalene water reducer.
In such scheme, described water reducer is MF water reducer, composite NNO water reducer.
The preparation method of the described high performance concrete utilizing antimony ore metallurgical slag to prepare, comprises the steps:
1) drying of antimony ore metallurgical slag is ground, for subsequent use after the round hole sieve of 4.75mm sieves;
2) by the cement weighed in mass ratio, flyash, breeze and step 1) in antimony ore metallurgical slag for subsequent use add in forced concrete mixer, stir 20s ~ 40s;
3) in stirrer, add water, stir 15s ~ 25s, then add rubble;
4) cement modification agent and water reducer are dissolved in the water, then add in stirrer, discharging after continuation stirring 150s.
Compared with prior art, beneficial effect of the present invention is:
(1) utilize method of the present invention, make the resource in antimony ore metallurgical slag obtain Appropriate application.Prepare the Ca (OH) that the cement in high performance concrete raw material discharges at hydration process 2, with the activeconstituents SiO in antimony ore metallurgical slag 2, Al 2o 3and thermal power plant I flyash, activeconstituents generation hydration reaction in S95 level GBFS ash generate the hydrated product such as hydrated calcium silicate, drated calcium aluminate.In addition there is hole in antimony ore metallurgical slag surface, and when grout contacts with such aggregate surface, its adhesivity obtains reinforcement.High performance concrete prepared by antimony ore metallurgical slag makes full use of the activeconstituents in antimony ore metallurgical slag, achieves and turns waste into wealth, and meets the policy of country's " recycling economy, green production ".
(2) the I grade of flyash added in high performance concrete, S95 level GBFS ash reduces the hydration heat in concrete, decreases carrying out of concrete thermal cracking, improves concrete later strength and resistance to chemical corrosion.
(3) the heavy metal antimony in antimony ore tailings, arsenic, mercury, cadmium are well solidificated in high performance concrete, in high performance concrete, leach liquor heavy metal concentration is all lower than leaching characteristic identification standard value, fundamentally can solve the pollution problem of antimony ore metallurgical slag to environment.
In sum; the invention provides a kind of method utilizing antimony ore metallurgical slag to prepare high performance concrete; this technology antimony ore metallurgical slag carrys out alternative concrete fine aggregate, with from thermal power plant I grade of flyash and replace part of cement from the levigate S95 level breeze of granulated blast-furnace slag and prepare high performance concrete.The high performance concrete utilizing antimony ore metallurgical slag to prepare can improve the workability of fresh concrete, reduces concrete initial stage hydration heat, reduces concrete thermal cracking, improve concrete resist chemical performance, improve concrete degree of compactness, ensure its weather resistance.In addition the heavy metal in antimony ore metallurgical slag is cured in closely knit concrete, can reduce the heavy metal contaminations such as antimony, arsenic, mercury, cadmium.Prepare in high performance concrete process at antimony ore metallurgical slag and utilized from solid wastes such as the metallurgical slag of antimony ore and the flyash of thermal power plant, really achieve the object of " recycling economy, green production ".
Embodiment
Below in conjunction with embodiment, the present invention will be described further, but content of the present invention is not only confined to the following examples.The main chemical compositions analysis (see table 1) of the antimony metallurgical slag that following examples use.
Table 1 antimony ore metallurgical slag main chemical compositions (%)
One, prepare the method for high performance concrete with antimony ore metallurgical slag, concrete steps are as follows:
1, high performance concrete raw material choose
Raw material selection: south, Xiangxiang, Hunan PO 42.5 cement; flyash is thermal power plant's I grade of flyash; breeze is S95 level GBFS; naphthalene series high-efficiency water-reducing agent (MF water reducer; composite NNO water reducer); cement modification agent selects T-007 high-molecular cement modification agent; antimony ore metallurgical slag selected by fine aggregate; its fineness modulus is 2.6 ~ 3.2; the continuous grading rubble of 5mm ~ 26.5mm selected by coarse aggregate; crush index value < 10%, faller gill shape≤5%, hydromining tap water.In addition in high performance concrete, selected starting material all meet the associated specifications in " high performance concrete utilisation technology code " (CECS 207:2006).
2, the preparation of high performance concrete
Use the above-mentioned starting material chosen, according to quality meter, every m 3the concrete proportioning of concrete is in table 2.
The proportioning (unit: kg) of the high performance concrete that table 2 utilizes antimony ore metallurgical slag to prepare
Test number Cement Flyash Breeze Antimony ore metallurgical slag Rubble Water reducer Cement modification agent Water
Embodiment 1 360 36 72 672 968 4.68 0.05 160
Embodiment 2 360 42 84 672 968 4.68 0.05 160
Embodiment 3 360 42 84 623 1017 4.68 0.05 160
Embodiment 4 360 42 84 722 918 4.68 0.05 160
According to the proportioning that table 2 provides, antimony ore metallurgical slag is utilized to prepare the concrete steps of high performance concrete as follows:
(1) the antimony ore metallurgical slag weighed in proportion, cement, I grade of flyash, S95 level breeze are added in forced concrete mixer, stir 20s ~ 40s;
(2) in stirrer, add load weighted water, stir 15s ~ 25s, then add rubble;
(3) cement modification agent and water reducer (MF water reducer, composite NNO water reducer) are dissolved in the water, then add in stirrer, discharging after continuation stirring 150s.
Two, antimony metallurgical slag high performance concrete Performance Detection
Detect the high performance concrete prepared by table 2 proportioning, concrete NDT the results are shown in Table 3.
The high performance concrete Performance Detection table that table 3 utilizes antimony ore metallurgical slag to prepare
Note :-expression does not detect
From detected result, construction of high-performance concrete prepared by antimony ore metallurgical slag is functional, the concrete 28d ultimate compression strength >50Mpa of embodiment 1 ~ embodiment 4; In addition test the method that concrete test block specifies according to " Hazardous wastes judging standard leaching characteristic identification " (GB5085.3-2007), the concentration of leach liquor heavy metal antimony, arsenic, mercury, cadmium is all lower than leaching characteristic identification standard value (antimony toxicity judging standard value vacancy).
Be understandable that, the illustrative embodiments that above embodiment is only used to method principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, when not departing from spirit and the essence of present method, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.

Claims (10)

1. the high performance concrete utilizing antimony ore metallurgical slag to prepare, it is characterized in that, described high performance concrete is by cement, flyash, breeze, antimony ore metallurgical slag, rubble, water reducer, cement modification agent and water are prepared from, and in every cubic metre of high performance concrete, the mass ratio of each material is cement: flyash: breeze: antimony ore metallurgical slag: rubble: water reducer: cement modification agent: water is 360:36 ~ 42:72 ~ 84:623 ~ 722:918 ~ 1017:4.68:0.05:160.
2. high performance concrete according to claim 1, is characterized in that, quality/(quality of the quality+rubble of antimony ore metallurgical slag) of described antimony ore metallurgical slag is 0.38 ~ 0.44.
3. high performance concrete according to claim 1, is characterized in that, main component: SiO in described antimony ore metallurgical slag 2content is 49.22% ~ 52.17%, Fe 2o 3content is 15.56% ~ 17.38%, Al 2o 3content is 12.43% ~ 15.16%, CaO content is 11.42% ~ 14.08%, and content of MgO is 1.24% ~ 2.15%, K 2o content is 0.94% ~ 1.39%.
4. high performance concrete according to claim 1, is characterized in that, described flyash is from thermal power plant, and quality grade is I grade, and selected breeze is S95 level, and described breeze is from granulated blast-furnace slag.
5. high performance concrete according to claim 1, is characterized in that, described water reducer is naphthalene series high-efficiency water-reducing agent, and described cement modification agent is T-007 high-molecular cement modification agent.
6. high performance concrete according to claim 1, is characterized in that, the particle diameter of described rubble coarse aggregate is the continuous grading of 5mm ~ 26.5mm, crush index value < 10%, faller gill shape≤5%.
7. high performance concrete according to claim 1, is characterized in that, described antimony ore metallurgical slag fine aggregate is that drying grinds and forms, and particle diameter≤4.75mm, fineness modulus is 2.6 ~ 3.2.
8. high performance concrete according to claim 1, is characterized in that, described water reducer is naphthalene water reducer.
9. high performance concrete according to claim 8, is characterized in that, described water reducer is MF water reducer, composite NNO water reducer.
10. the preparation method of the high performance concrete utilizing antimony ore metallurgical slag to prepare according to any one of claim 1-9, is characterized in that comprising the steps:
1) drying of antimony ore metallurgical slag is ground, for subsequent use after the round hole sieve of 4.75mm sieves;
2) by the cement weighed in mass ratio, flyash, breeze and step 1) in antimony ore metallurgical slag for subsequent use add in forced concrete mixer, stir 20s ~ 40s;
3) in stirrer, add water, stir 15s ~ 25s, then add rubble;
4) cement modification agent and water reducer are dissolved in the water, then add in stirrer, discharging after continuation stirring 150s.
CN201410742304.5A 2014-12-08 2014-12-08 High-performance concrete prepared from antimony ore smelting slag and preparation method of high-performance concrete Pending CN104478328A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106007529A (en) * 2016-05-25 2016-10-12 句容联众科技开发有限公司 High-performance concrete and preparation method thereof
CN109909254A (en) * 2019-04-10 2019-06-21 北京净界新宇环保科技有限公司 A kind of antimony pollution processing method
CN112456903A (en) * 2020-11-27 2021-03-09 湖南科技大学 High-performance concrete based on antimony tailing waste stone and preparation method thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106007529A (en) * 2016-05-25 2016-10-12 句容联众科技开发有限公司 High-performance concrete and preparation method thereof
CN109909254A (en) * 2019-04-10 2019-06-21 北京净界新宇环保科技有限公司 A kind of antimony pollution processing method
CN112456903A (en) * 2020-11-27 2021-03-09 湖南科技大学 High-performance concrete based on antimony tailing waste stone and preparation method thereof

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