CN102515828A - Porous heat-insulation material prepared utilizing iron ore surrounding rock and iron tailings and preparation method thereof - Google Patents
Porous heat-insulation material prepared utilizing iron ore surrounding rock and iron tailings and preparation method thereof Download PDFInfo
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- CN102515828A CN102515828A CN2011104166619A CN201110416661A CN102515828A CN 102515828 A CN102515828 A CN 102515828A CN 2011104166619 A CN2011104166619 A CN 2011104166619A CN 201110416661 A CN201110416661 A CN 201110416661A CN 102515828 A CN102515828 A CN 102515828A
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a porous heat-insulation material prepared utilizing iron ore surrounding rock and iron tailings and a preparation method of the porous heat-insulation material. The porous heat-insulation material prepared utilizing the iron ore surrounding rock and iron tailings is characterized by being prepared from the following components in percentage by weight: 30-60% of iron tailing powder, 20-50% of iron ore surrounding rock powder, 0.5-10% of foaming agent, 0-1% of cosolvent and 0.1-9% of foam stabilizer by uniformly mixing, then adding water, mixing and pulping, carrying out microwave calcining and cooling. The preparation method of the porous heat-insulation material prepared utilizing the iron ore surrounding rock and iron tailings has high utilization rates of iron ore surrounding rock and iron tailings; and the prepared porous heat-insulation material has low density and excellent heat-insulation performance.
Description
Technical field
The invention belongs to the material of construction class, relate to porous thermal insulating material that utilizes iron ore country rock and iron tailings preparation and preparation method thereof.
Background technology
Along with developing rapidly of Iron And Steel Industry, iron ore is peeled off solid waste total amounts such as country rock and the mine tailing of generation and is reached 2,000,000,000 t.This has taken a large amount of soils; And, therefore be stored in it in tailing dam or when entering river course, mountain valley, lowland, regular meeting's seepage flow overflows nearby because how mill tailings be milled to below 0. 15 even 0. 07mm; The airborne dust of blowing; Form sandstorm and severe contamination water source, soil and air, worsen the life and the working condition of surrounding area, brought severe contamination and harm to human habitat.Remove this, objectionable constituent in the mine tailing and residual beneficiation reagent also can cause serious harm to ecotope.This has caused the extensive concern of the whole society therefrom.
At the same time, along with the mass development utilization of Mineral resources, the poorness day by day of ore, mine tailing also receives the attention of countries in the world gradually as secondary resource.And the comprehensive utilization ratio of China's mine tailing is merely 7% at present; And how because of the chemical ingredients of iron tailings near the building ceramic material; Desirable ingredients such as glass, brick and tile; Although and the starting material that are used for material of construction also have some reports that iron tailings is used to prepare the sintered heat insulating material at present; One Chinese patent application like Xi'an materials for wall research institute patent publication No. CN101638918A discloses a kind of to be main raw material with iron tailings and natural matter shale, to add toughner that solubility promoter and whipping agent utilization tradition kiln sintering process prepare the method for lagging material; Wuhan University of Technology's publication number is that the one Chinese patent application of CN102167618A discloses a kind of flyash-hole, iron tailings Quito lagging material and preparation method thereof, and it is mixed by powdery solid waste, sticker, flux toughner and composite foamable agent.Heat transfer is inhomogeneous, foaming pore size distributional difference is big but it all exists, and density is high, and the problem of heat-insulating property difference is difficult to realize suitability for industrialized production; The shared ratio of iron tailings usage quantity is low, only reaches 10-40%, still needs and uses other natural matters such as shale etc., and the iron tailings utilization ratio is low, is unfavorable for a large amount of, the mass-producing utilization of iron tailings.
Summary of the invention
Technical problem to be solved by this invention is that the lagging material that is to overcome existing iron tailings preparation exists that the iron tailings utilization ratio is not high, density is high, the shortcoming of heat-insulating property difference; A kind of porous thermal insulating material that utilizes iron ore country rock and iron tailings preparation and preparation method thereof is provided; This preparing method's iron ore country rock and iron tailings utilization ratio are high; The porous thermal insulating density of material that makes is low, and heat-insulating property is excellent.
In order to solve the problems of the technologies described above the technical scheme that the present invention adopts:
Utilize the porous thermal insulating material of iron ore country rock and iron tailings preparation; It is characterized in that: it is by weight percentage with iron tailings powder 30-60%; Iron ore country rock powder 20-50%; Whipping agent 0.5-10%, solubility promoter 0-1% adds the water mix grinding and becomes slip microwave calcination, cooling and get after suds-stabilizing agent 0.1-9% mixes.
Press such scheme, described iron tailings powder gets fineness＜100 μ m by the iron tailings screening.
Press such scheme, described iron ore country rock powder is peeled off country rock oven dry that the back produces, grinding to fineness＜100 μ m by iron ore and is got.
Press such scheme, described whipping agent is one or more the mixing in silit, lime carbonate, the caoxalate.Described whipping agent is through inflammable or decompose to produce gas such as CO
2And play the effect of whipping agent.
Press such scheme, described solubility promoter is one or more the mixing in yellow soda ash, Sodium Silicofluoride 98min, quadrol, the manganese oxide.
Press such scheme, described suds-stabilizing agent is one or more the mixing in Sodium hexametaphosphate 99, boric acid, sodium phosphate, Antimony Trioxide: 99.5Min, borax, the trisodium phosphate.
Utilize iron ore country rock and iron tailings to prepare the method for porous thermal insulating material, it is characterized in that: it is that iron tailings powder, iron ore country rock powder, whipping agent, solubility promoter, suds-stabilizing agent are iron tailings powder 30-60%, iron ore country rock powder 20-50%, whipping agent 0.5-10% by weight percentage; Solubility promoter 0-1%, suds-stabilizing agent 0.1-9% chooses material, mixes; Add the water mix grinding then and become slip, ageing, drying; 700-1000 ℃ of microwave calcination, cooling, the demoulding and getting.
Press such scheme, said microwave exposure power is 2.45GHz ± 25MHz.
Press such scheme, the described microwave calcination time is 0.5-5h.
Beneficial effect of the present invention:
1, the present invention's country rock and mine tailing of adopting iron ore to peel off generation made main raw material, and iron ore country rock and mine tailing utilization ratio are up to 90%, and it is obvious to reduce discharging benefit, the energy-conserving and environment-protective of preparation process;
Adopt microwave calcination technology to carry out sintering; Sintering is even; And because iron tailings remaining existing with the equally distributed natural wave absorbing agent red stone of chemical state; Can effectively improve the receptivity of microwave, make the Heating temperature homogenizing, for the porous thermal insulating material that obtains steady quality, good heat insulating provides reliable process means; The system problem of non-uniform of also having avoided the required extra interpolation wave absorbing agent of Yin Putong microwave sintering process simultaneously and having brought;
The whipping agent that adds in the preparation process can pass through inflammable in calcination process or decompose to produce gas such as CO
2And play the effect of foaming; The solubility promoter and the suds-stabilizing agent of the appropriate amount that adds can reduce calcining temperature, increase the blowing temperature scope simultaneously, reduce the generation probability of communicating aperture in the preparation process, improve the physical strength of the porous thermal insulating material that makes thus, improve yield rate;
2, utilize low (the about 50-150 kg/m of porous thermal insulating density of material of iron ore country rock and iron tailings microwave sintering preparation among the present invention
3), heat-insulating property excellent (the about 0.05-0.07W/mK of thermal conductivity), can be widely used in industry, covil construction.
Embodiment:
Further specify summary of the invention of the present invention below in conjunction with embodiment.
Embodiment 1:
Country rock oven dry, ball mill grinding to iron ore country rock powder, whipping agent, solubility promoter, the suds-stabilizing agent of＜100 μ m that iron tailings powder, the iron ore of fineness＜100 μ m that the iron tailings screening is got peeled off the back generation are iron tailings powder 60% by weight percentage, iron ore country rock powder 20%, technical grade silit 10%, technical grade Sodium Silicofluoride 98min 1%; Technical grade boric acid 9% is chosen material, mixes; Add the water mix grinding then and become slip, and put into the mould ageing, roll; Drying, placing microwave frequency is microwave field heat temperature raising to 900 ± 50 ℃ of 2.45GHz ± 25MHz, microwave calcination 0.5h; Slowly cooling then, the demoulding, it is 50kg/m that cutting promptly obtains density
3, thermal conductivity is the porous thermal insulating material of 0.05-0.06W/mK.
Embodiment 2:
Country rock oven dry, ball mill grinding to iron ore country rock powder, whipping agent, solubility promoter, the suds-stabilizing agent of＜100 μ m that iron tailings powder, the iron ore of fineness＜100 μ m that the iron tailings screening is got peeled off the back generation are iron tailings powder 30% by weight percentage, iron ore country rock powder 50%, technical grade caoxalate 10%, technical grade manganese oxide 1%; Technical grade Sodium hexametaphosphate 99 9% is chosen material, mixes; Add the water mix grinding then and become slip, and put into the mould ageing, roll; Drying, placing microwave frequency is microwave field heat temperature raising to 750 ± 50 ℃ of 2.45GHz ± 25MHz, microwave calcination 5h; Slowly cooling, the demoulding, it is 60kg/m that cutting promptly obtains density
3, thermal conductivity is the porous thermal insulating material of 0.05-0.06W/mK.
Embodiment 3:
Country rock oven dry, ball mill grinding to iron ore country rock powder, whipping agent, solubility promoter, the suds-stabilizing agent of＜100 μ m that iron tailings powder, the iron ore of fineness＜100 μ m that the iron tailings screening is got peeled off the back generation are iron tailings powder 40% by weight percentage, iron ore country rock powder 50%, technical grade silit 0.5%; Technical grade yellow soda ash 1%, PHOSPHORIC ACID TECH.GRADE sodium 8.5% is chosen material; Mix, add the water mix grinding then and become slip, and put into the mould ageing; Roll, drying, placing microwave frequency is microwave field heat temperature raising to 800 ± 50 ℃ of 2.45GHz ± 25MHz; Microwave calcination 2.5h, cooling, it is 150kg/m that the demoulding promptly obtains density
3, thermal conductivity is the porous thermal insulating material of 0.07-0.08W/mK.
Embodiment 4:
Country rock oven dry, ball mill grinding to iron ore country rock powder, whipping agent, the suds-stabilizing agent of＜100 μ m that iron tailings powder, the iron ore of fineness＜100 μ m that the iron tailings screening is got peeled off the back generation are iron tailings powder 50% by weight percentage, iron ore country rock powder 40%, technical grade caoxalate 7%; Technical grade Antimony Trioxide: 99.5Min 3% is chosen material, mixes; Add the water mix grinding then and become slip, and put into the mould ageing, roll; Drying, placing microwave frequency is microwave field heat temperature raising to 950 ± 50 ℃ of 2.45GHz ± 25MHz, microwave calcination 5h; Slowly cooling, the demoulding, it is 100kg/m that cutting promptly obtains density
3, thermal conductivity is the porous thermal insulating material of 0.06-0.07W/mK.
Embodiment 5:
Country rock oven dry, ball mill grinding to iron ore country rock powder, whipping agent, solubility promoter, the suds-stabilizing agent of＜100 μ m that iron tailings powder, the iron ore of fineness＜100 μ m that the iron tailings screening is got peeled off the back generation are iron tailings powder 60% by weight percentage, iron ore country rock powder 30%, technical grade silit 9%, technical grade quadrol 0.5%; Technical grade trisodium phosphate 0.5% is chosen material, mixes; Add the water mix grinding then and become slip, and put into the mould ageing, roll; Drying, placing microwave frequency is microwave field heat temperature raising to 900 ± 50 ℃ of 2.45GHz ± 25MHz, microwave calcination 0.5h; Slowly cooling then, the demoulding, it is 60kg/m that cutting promptly obtains density
3, thermal conductivity is the porous thermal insulating material of 0.05-0.06W/mK.
Claims (9)
1. utilize the porous thermal insulating material of iron ore country rock and iron tailings preparation; It is characterized in that: it is by weight percentage with iron tailings powder 30-60%; Iron ore country rock powder 20-50%; Whipping agent 0.5-10%, solubility promoter 0-1% adds the water mix grinding and becomes slip microwave calcination, cooling and get after suds-stabilizing agent 0.1-9% mixes.
2. the porous thermal insulating material that utilizes iron ore country rock and iron tailings preparation according to claim 1, it is characterized in that: described iron tailings powder gets fineness＜100 μ m by the iron tailings screening.
3. the porous thermal insulating material that utilizes the preparation of iron ore country rock and iron tailings according to claim 1 is characterized in that: described iron ore country rock powder is peeled off country rock oven dry that the back produces, grinding to fineness＜100 μ m by iron ore and is got.
4. the porous thermal insulating material that utilizes the preparation of iron ore country rock and iron tailings according to claim 1 is characterized in that: described whipping agent is one or more the mixing in silit, lime carbonate, the caoxalate.
5. the porous thermal insulating material that utilizes the preparation of iron ore country rock and iron tailings according to claim 1 is characterized in that: described solubility promoter is one or more the mixing in yellow soda ash, Sodium Silicofluoride 98min, quadrol, the manganese oxide.
6. the porous thermal insulating material that utilizes the preparation of iron ore country rock and iron tailings according to claim 1, described suds-stabilizing agent are one or more the mixing in Sodium hexametaphosphate 99, boric acid, sodium phosphate, Antimony Trioxide: 99.5Min, borax, the trisodium phosphate.
7. the method for utilizing iron ore country rock and iron tailings to prepare the porous thermal insulating material according to claim 1 is characterized in that: it is that iron tailings powder, iron ore country rock powder, whipping agent, solubility promoter, suds-stabilizing agent are iron tailings powder 30-60%, iron ore country rock powder 20-50%, whipping agent 0.5-10% by weight percentage; Solubility promoter 0-1%, suds-stabilizing agent 0.1-9% chooses material, mixes; Add the water mix grinding then and become slip, ageing, drying; 700-1000 ℃ of microwave calcination, cooling, the demoulding and getting.
8. the method for utilizing iron ore country rock and iron tailings to prepare the porous thermal insulating material according to claim 7 is characterized in that: said microwave exposure power is 2.45GHz ± 25MHz.
9. the method for utilizing iron ore country rock and iron tailings to prepare the porous thermal insulating material according to claim 7 is characterized in that: the described microwave calcination time is 0.5-5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110416661.9A CN102515828B (en) | 2011-12-14 | 2011-12-14 | Porous heat-insulation material prepared utilizing iron ore surrounding rock and iron tailings and preparation method thereof |
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| CN201110416661.9A CN102515828B (en) | 2011-12-14 | 2011-12-14 | Porous heat-insulation material prepared utilizing iron ore surrounding rock and iron tailings and preparation method thereof |
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| CN102515828A true CN102515828A (en) | 2012-06-27 |
| CN102515828B CN102515828B (en) | 2014-04-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342578A (en) * | 2013-06-26 | 2013-10-09 | 武汉理工大学 | Porous insulating decorative material prepared by utilizing iron tailings and preparation method thereof |
| CN105601206A (en) * | 2016-02-01 | 2016-05-25 | 中国十七冶集团有限公司 | Iron ore waste rock self-compaction concrete |
| CN108503338A (en) * | 2018-04-25 | 2018-09-07 | 东北大学 | A method of using coal ash for manufacturing for high intensity foamed ceramic material |
| CN108503371A (en) * | 2018-04-25 | 2018-09-07 | 东北大学 | A method of preparing foamed ceramic material using blast furnace slag and aluminous fly-ash |
| CN110256045A (en) * | 2019-04-30 | 2019-09-20 | 东北大学 | Foam insulation board prepared from iron tailings and preparation method thereof |
| CN112552072A (en) * | 2020-12-28 | 2021-03-26 | 深圳市华威环保建材有限公司 | Construction waste regenerated foamed ceramic and preparation method thereof |
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| CN101638918A (en) * | 2009-08-19 | 2010-02-03 | 西安墙体材料研究设计院 | Technology for preparing porous heat insulation plates by sintering iron tailings |
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Patent Citations (3)
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| CN101152980A (en) * | 2006-09-30 | 2008-04-02 | 郜长福 | Microwave oven sintering method of producing silicon nitride ceramics heater and special equipment thereof |
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| 刘媛媛等: "铁尾矿烧结多孔保温材料制备工艺及结构研究", 《建筑科学》, vol. 25, no. 12, 31 December 2009 (2009-12-31) * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342578A (en) * | 2013-06-26 | 2013-10-09 | 武汉理工大学 | Porous insulating decorative material prepared by utilizing iron tailings and preparation method thereof |
| CN103342578B (en) * | 2013-06-26 | 2014-12-03 | 武汉理工大学 | Porous insulating decorative material prepared by utilizing iron tailings and preparation method thereof |
| CN105601206A (en) * | 2016-02-01 | 2016-05-25 | 中国十七冶集团有限公司 | Iron ore waste rock self-compaction concrete |
| CN108503338A (en) * | 2018-04-25 | 2018-09-07 | 东北大学 | A method of using coal ash for manufacturing for high intensity foamed ceramic material |
| CN108503371A (en) * | 2018-04-25 | 2018-09-07 | 东北大学 | A method of preparing foamed ceramic material using blast furnace slag and aluminous fly-ash |
| CN108503338B (en) * | 2018-04-25 | 2020-12-15 | 东北大学 | Method for preparing high-strength foamed ceramic material by using fly ash |
| CN108503371B (en) * | 2018-04-25 | 2020-12-15 | 东北大学 | Method for preparing foamed ceramic material by using blast furnace slag and high-alumina fly ash |
| CN110256045A (en) * | 2019-04-30 | 2019-09-20 | 东北大学 | Foam insulation board prepared from iron tailings and preparation method thereof |
| CN112552072A (en) * | 2020-12-28 | 2021-03-26 | 深圳市华威环保建材有限公司 | Construction waste regenerated foamed ceramic and preparation method thereof |
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| CN102515828B (en) | 2014-04-09 |
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