CN102417368A - Foam ceramic manufactured by high-silicon iron tailings and manufacture method thereof - Google Patents
Foam ceramic manufactured by high-silicon iron tailings and manufacture method thereof Download PDFInfo
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- CN102417368A CN102417368A CN201110277704XA CN201110277704A CN102417368A CN 102417368 A CN102417368 A CN 102417368A CN 201110277704X A CN201110277704X A CN 201110277704XA CN 201110277704 A CN201110277704 A CN 201110277704A CN 102417368 A CN102417368 A CN 102417368A
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Abstract
The invention relates to the technical field of industrial solid wastes, and in particular relates to a foam ceramic manufactured by high-silicon iron tailings and a manufacture method thereof. The foam ceramic is composed of the following raw material batch in percentage by weight: 60-70% of iron tailings, 5-20% of coal ash, 4-10% of coal gangue, 0-5% of clay, 0-5% of feldspar, 1-3% of shale, 2-5% of vermiculite and 1-5% of perlite. The manufacture method comprises the following steps of: smashing the batch in a ball mill until the granularity is less than 0.07mm, and manufacturing into particles of 20-80 meshes; pressing the particles into a block shape with a half dry pressing and shaping method; and sintering in a kiln, or sintering levigated powder in a refractory mold at the sintering temperature of 1150-1250DEG C. The foam ceramic has the beneficial effect that harm on the environment by the tailings can be lightened, the high-silicon iron tailings can be used in the foam ceramic to replace quartz sand, and therefore, energy consumption can be lowered so as to lower production cost.
Description
Technical field
The present invention relates to industrial solid castoff and utilize technical field, particularly a kind of foamed ceramics that utilizes the tailings of high silicon iron manufacturing and preparation method thereof.
Background technology
Foamed ceramics is through the kiln high temperature sintering, discontinuous mutually airtight even porous, the lightweight solid mineral material fully in a kind of inside that foaming is processed.Have that unit weight is little, thermal conductivity is low, physical strength is high, do not absorb water, characteristics such as water proof anti-seepage, heat-insulation and heat-preservation, anticorrosion crack resistance are strong.Foamed ceramics can make the overall weight of buildings alleviate as material of construction, can reduce infrastructure cost; Because this product is heat insulation, insulation, thereby the energy that winter heating and cooling in summer are used reduces greatly; Because this product sound-absorbing, waterproof, radiationless, thereby living quality is improved.
The main raw material of conventional foam pottery: silica sand, feldspar, shale, vermiculite, perlite, admixture etc.
Along with the continuous exploitation of Mineral resources, the tailings discharging amount grows with each passing day.The accumulation of mine tailing causes atmosphere, soil and groundwater pollution easily, destroys ecotope, even can cause the rubble flow geologic hazard.Therefore mine tailing improvement and comprehensive utilization are very urgent things.
In recent years mine tailing comprehensive utilization of resources result of study shows, varies though the material of mill tailings is formed, and component wherein and development and utilization measure are still regular governed.This three big key element of mineralogical composition, chemical ingredients and use characteristics thereof has constituted the basis of mine tailing utilization of resources feasibility.The levigated mine tailing has constituted a kind of compound raw mineral materials, and wherein some effect of trace elements has many process characteristics rarely known by the people.Owing to do not need basically these raw materials are remake broken and other processing, produced product often energy efficient and cost is lower, so economic benefit very significantly.Test shows: most of mine tailings can become the surrogate of traditional raw material, even can become the novel material that has characteristic, like high silicon tailings (SiO
2＞60%), can make material of construction, highway raw material with sand, pottery, glass, sytull, grouan and silicate novel material.
Summary of the invention
The purpose of this invention is to provide a kind of foamed ceramics that utilizes tailings of high silicon iron to make; Utilize industrial solid castoffs such as mine tailing, coal gangue, flyash can digest industrial solid castoff in a large number for the main material production foamed ceramics; Cut down the consumption of energy, thereby reduce production costs.
Another object of the present invention provides a kind of making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing,
The objective of the invention is to realize through following technical proposals:
The foamed ceramics that utilizes tailings of high silicon iron to make of the present invention is characterized in that being made up of by weight percentage following raw material admixtion:
Iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5%,
Describedly form by weight percentage: iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% by following raw material admixtion.
Describedly form by weight percentage: iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% by following raw material admixtion.
The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention; It is characterized in that raw material iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5% are prepared burden by weight percentage; Place ball mill to be crushed to granularity this admixtion less than 0.07mm; Levigated admixtion powder is processed 20-80 purpose particle, adopt semi-dry pressing on ceramic brick press, to be pressed into bulk, place the kiln sintering then; Sintering temperature is 1150 ℃-1250 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Perhaps; The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention is characterized in that raw material iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5% are prepared burden by weight percentage, places ball mill to be crushed to granularity less than 0.07mm this admixtion; Directly put into levigated admixtion powder in the fireproof die; Place the kiln sintering then, sintering temperature is 1150 ℃-1250 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; Levigated raw material admixtion powder is processed 20-80 purpose particle, adopt semi-dry pressing on ceramic brick press, to be pressed into bulk, place the kiln sintering then; Sintering temperature is 1210 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Perhaps; The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm, and levigated raw material admixtion powder is put in the fireproof die, places the kiln sintering then; Sintering temperature is 1150 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Perhaps; The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention, it is characterized in that with weight percent being: the raw material admixtion of iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm, and the levigated powder is processed 20-80 purpose particle; Adopt semi-dry pressing on ceramic brick press, to be pressed into bulk; Place the kiln sintering then, sintering temperature is 1210 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Perhaps; The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm, and the levigated powder is put in the fireproof die, places the kiln sintering then; Sintering temperature is 1150 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Described kiln is cell-type electric furnace, electric heating roller kiln, combustion gas roller kiln, combustion gas shuttle kiln or fuel gas tunnel kiln.
The invention has the beneficial effects as follows:
1. tailings of high silicon iron is a kind of mine waste, and it is occupied arable land, contaminate environment even might cause the disastrous accident of threat to life property safeties such as mine tailing storehouse dam break.It is used as industrial raw material can reduces its volume of cargo in storage, alleviate the harm of mine tailing environment.
2. because tailings of high silicon iron is a kind of waste; So its other cost except trucking costs is zero basically; Utilize tailings of high silicon iron to replace the part usage quantity of silica sand, feldspar, shale, vermiculite etc. in the foamed ceramics respectively, realize the second stage employ of resource.Because be mixed with combustiblematerialss such as coal gangue, flyash in the raw material, reduce production costs simultaneously thereby can also cut down the consumption of energy.
In a word, the benefit that the present invention brings is to make full use of the depleted mine tailing, reduces environmental pollution, reduces production costs.
Embodiment
Below in conjunction with embodiment embodiment of the present invention is described.
The foamed ceramics that utilizes tailings of high silicon iron to make of the present invention is characterized in that being made up of by weight percentage following raw material admixtion:
Iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5%.
The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention; It is characterized in that raw material iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5% are prepared burden by weight percentage; Place ball mill to be crushed to granularity this admixtion less than 0.07mm; Levigated admixtion powder is processed 20-80 purpose particle, adopt semi-dry pressing on ceramic brick press, to be pressed into bulk, place the kiln sintering then; Sintering temperature is 1150 ℃-1250 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Perhaps; The making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing of the present invention is characterized in that raw material iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5% are prepared burden by weight percentage, places ball mill to be crushed to granularity less than 0.07mm this admixtion; Directly put into levigated admixtion powder in the fireproof die; Place the kiln sintering then, sintering temperature is 1150 ℃-1250 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
Described kiln is cell-type electric furnace, electric heating roller kiln, combustion gas roller kiln, combustion gas shuttle kiln or fuel gas tunnel kiln.
Embodiment 1
With weight percent be: the raw material admixtion of iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; Levigated raw material admixtion powder is processed 20-80 purpose particle; Adopt semi-dry pressing on ceramic brick press, to be pressed into bulk; Place the kiln sintering then, sintering temperature is 1210 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.Resulting product internal porosity is evenly independent, and density is 450kg/m3.Ultimate compression strength 14Mpa, bending strength 3Mpa.
Embodiment 2
With weight percent be: the raw material admixtion of iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; Levigated raw material admixtion powder is put in the fireproof die; Place the kiln sintering then, sintering temperature is 1150 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.Resulting product internal porosity is evenly independent, and density is 650kg/m3.Ultimate compression strength 20Mpa, bending strength 6Mpa.
Embodiment 3
With weight percent be: the raw material admixtion of iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; The levigated powder is processed 20-80 purpose particle; Adopt semi-dry pressing on ceramic brick press, to be pressed into bulk; Place the kiln sintering then, sintering temperature is 1210 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.Resulting product internal porosity is evenly independent, and density is 350kg/m3.Ultimate compression strength 12Mpa, bending strength 2.5Mpa.
Embodiment 4
With weight percent be: the raw material admixtion of iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; The levigated powder is put in the fireproof die; Place the kiln sintering then, sintering temperature is 1150 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.Resulting product internal porosity is evenly independent, and density is 550kg/m3.Ultimate compression strength 16Mpa, bending strength 4Mpa.
The present invention makes full use of the part usage quantity that the depleted tailings of high silicon iron replaces silica sand, feldspar, shale, vermiculite etc. in the foamed ceramics respectively, realizes the second stage employ of resource.Because be mixed with combustiblematerialss such as coal gangue, flyash in the raw material, can also cut down the consumption of energy, thereby reduce production costs simultaneously, reduce the stacking amount of tailings of high silicon iron, reduce environmental pollution effectively.
Claims (10)
1. foamed ceramics that utilizes tailings of high silicon iron to make is characterized in that being made up of by weight percentage following raw material admixtion:
Iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5%.
2. the foamed ceramics that utilizes tailings of high silicon iron to make according to claim 1 is characterized in that describedly being made up of by weight percentage following raw material admixtion: iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3%.
3. the foamed ceramics that utilizes tailings of high silicon iron to make according to claim 1; It is characterized in that describedly forming by weight percentage: iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% by following raw material admixtion.
4. making method of utilizing the foamed ceramics that tailings of high silicon iron makes; It is characterized in that raw material iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5% are prepared burden by weight percentage; Place ball mill to be crushed to granularity this admixtion less than 0.07mm; Levigated admixtion powder is processed 20-80 purpose particle, adopt semi-dry pressing on ceramic brick press, to be pressed into bulk, place the kiln sintering then; Sintering temperature is 1150 ℃-1250 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
5. making method of utilizing the foamed ceramics that tailings of high silicon iron makes; It is characterized in that raw material iron tailings 60～70%, flyash 5-20%, coal gangue 4-10%, clay 0-5%, feldspar 0-5%, shale 1-3%, vermiculite 2-5%, perlite 1-5% are prepared burden by weight percentage; Place ball mill to be crushed to granularity this admixtion, levigated admixtion powder is directly put in the fireproof die, place the kiln sintering then less than 0.07mm; Sintering temperature is 1150 ℃-1250 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
6. the making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing according to claim 4; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; Levigated raw material admixtion powder is processed 20-80 purpose particle, adopt semi-dry pressing on ceramic brick press, to be pressed into bulk, place the kiln sintering then; Sintering temperature is 1210 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
7. the making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing according to claim 5; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 70%, flyash 17 %, coal gangue 5%, feldspar 2%, shale 1%, vermiculite 2%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; Levigated raw material admixtion powder is put in the fireproof die; Place the kiln sintering then, sintering temperature is 1150 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
8. the making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing according to claim 4; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; The levigated powder is processed 20-80 purpose particle, adopt semi-dry pressing on ceramic brick press, to be pressed into bulk, place the kiln sintering then; Sintering temperature is 1210 ℃; The sintering time cycle is 28 hours, wherein heat up section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
9. the making method of utilizing the foamed ceramics of tailings of high silicon iron manufacturing according to claim 5; It is characterized in that with weight percent being: the raw material admixtion of iron tailings 63%, flyash 17 %, coal gangue 5%, clay 5%, feldspar 2%, shale 1%, vermiculite 4%, perlite 3% places ball mill to be crushed to granularity less than 0.07mm; The levigated powder is put in the fireproof die; Place the kiln sintering then, sintering temperature is 1150 ℃, and the sintering time cycle is 28 hours; Wherein intensification section 9 hours, the section of burning till 1 hour, temperature descending section 18 hours, naturally cooling.
10. according to claim 4 or the 5 described making methods of utilizing the foamed ceramics of tailings of high silicon iron manufacturing, it is characterized in that described kiln is cell-type electric furnace, electric heating roller kiln, combustion gas roller kiln, combustion gas shuttle kiln or fuel gas tunnel kiln.
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| CN102976867A (en) * | 2012-12-17 | 2013-03-20 | 本溪清迈尾矿综合利用有限公司 | Production method of magnetized high-silicon iron tailings compound soil remediation fertilizer and product |
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| CN106167360A (en) * | 2016-06-17 | 2016-11-30 | 李高明 | Utilize the method that high aluminosilicate mine tailing and slag prepare haydite |
| CN106431335A (en) * | 2016-09-27 | 2017-02-22 | 甘肃华晨生态治理有限公司 | Method for producing multifunctional quincunx-shaped perlite tailing light perforated ceramsite |
| CN106588081A (en) * | 2016-12-14 | 2017-04-26 | 济南大学 | Preparation of iron tailing based light heat-preservation foamed ceramic material |
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| CN102976867A (en) * | 2012-12-17 | 2013-03-20 | 本溪清迈尾矿综合利用有限公司 | Production method of magnetized high-silicon iron tailings compound soil remediation fertilizer and product |
| CN102976867B (en) * | 2012-12-17 | 2016-01-20 | 北京清迈华清控股(集团)有限公司 | The production method of magnetization tailings of high silicon iron composite soil remediation fertilizer and product |
| CN103951457B (en) * | 2014-04-21 | 2015-10-14 | 淄博鲁友耐火材料有限公司 | Foamed ceramics wall heat insulation material and preparation method thereof |
| CN106167360A (en) * | 2016-06-17 | 2016-11-30 | 李高明 | Utilize the method that high aluminosilicate mine tailing and slag prepare haydite |
| CN106431335A (en) * | 2016-09-27 | 2017-02-22 | 甘肃华晨生态治理有限公司 | Method for producing multifunctional quincunx-shaped perlite tailing light perforated ceramsite |
| CN106588081A (en) * | 2016-12-14 | 2017-04-26 | 济南大学 | Preparation of iron tailing based light heat-preservation foamed ceramic material |
| CN106699217A (en) * | 2016-12-14 | 2017-05-24 | 济南大学 | Method for preparing foam ceramic heat-insulation board by utilizing gold ore tailings |
| CN106747615A (en) * | 2017-03-09 | 2017-05-31 | 咸阳陶瓷研究设计院 | A kind of method that utilization molybdenum tailing produces ceramic thermal insulation plate |
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| US12018479B2 (en) | 2019-08-21 | 2024-06-25 | Shanxi Tianhe New Material Technology Co., Ltd. | Multi-function ecological exterior wall and preparation method therefor |
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Application publication date: 20120418 |