CN105669243B - A kind of desulfurated plaster and iron tailings haydite and preparation method thereof - Google Patents

A kind of desulfurated plaster and iron tailings haydite and preparation method thereof Download PDF

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Publication number
CN105669243B
CN105669243B CN201610019831.2A CN201610019831A CN105669243B CN 105669243 B CN105669243 B CN 105669243B CN 201610019831 A CN201610019831 A CN 201610019831A CN 105669243 B CN105669243 B CN 105669243B
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haydite
desulfurated plaster
iron tailings
parts
ball
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CN105669243A (en
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周文波
张威
操斌
李艾强
黄业豪
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • C04B33/1328Waste materials; Refuse; Residues without additional clay
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
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    • C04B33/132Waste materials; Refuse; Residues
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • C04B33/135Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352Fuel ashes, e.g. fly ash
    • CCHEMISTRY; METALLURGY
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C04B35/195Alkaline earth aluminosilicates, e.g. cordierite or anorthite
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/22Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in calcium oxide, e.g. wollastonite
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    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Abstract

The present invention relates to a kind of desulfurated plaster and iron tailings haydite and preparation method thereof.Preparation process includes:Pretreatment of raw material, dispensing mixing, pelletizing, drying, preheating, roasting, cooling;Raw materials by weight proportioning is 10 ~ 20 parts of desulfurated plaster;50 ~ 60 parts of iron tailings;20 ~ 30 parts of flyash;0 ~ 6 part of coal dust;The main thing that haydite is made is mutually diopside(CaMgSi2O6), calcium aluminosilicate (CaAl2Si2O8), anorthite(CaMgSi2O6)With pyroxene (Ca4Mg3FeSi8O24);Diopside and the anorthite crystal is tabular or sheet-pile shape.The present invention improves the proportion scale of desulfurated plaster, adds its resource utilization;Improve the intensity of haydite simultaneously and reduce the water absorption rate of haydite, preparation method technique is simple, easy to operate, and production cost is low.

Description

A kind of desulfurated plaster and iron tailings haydite and preparation method thereof
Technical field
The invention belongs to industrial waste technical field of resource comprehensive utilization, and in particular to one kind is with desulfurated plaster and iron tailings Haydite for primary raw material and preparation method thereof.
Background technology
China's iron ore deposit has the characteristics of poor, thin, miscellaneous, and 2.5 ~ 3.0t mine tailings will be discharged by often producing 1t iron ore concentrates.Mine tailing Store up not only landed property, and to reservoir area periphery, especially to reservoir area downstream environment structure potential hazard.By the end of 2011 Bottom, China's iron tailings volume of cargo in storage is up to 12,000,000,000 t or so, and is being increased every year with 1,500,000,000 t or so speed, corresponds Be China's current Mine Tailings Utilization deficiency when producing the 17% of mine tailing per year, therefore develop resource of tailings and caused people's height Pay attention to, and by iron tailings be main material production haydite be it is a kind of effectively utilize iron tailings in a manner of one of.
Due to great attention of the country for thermoelectricity and iron and steel enterprise's emission reduction problem, flue gas desulfurization industry is quickly sent out therewith Exhibition.Limestone scrubbing FGD is at present in the world using a kind of most, coal-fired flue gas desulfurization method of technology maturation, flue gas Desulfurated plaster is exactly that the technique carries out caused byproduct in subtractive process to sulfur dioxide.Because desulfurated plaster has necessarily Gelling, and granularity is small, and its grain diameter is usually no more than 90um, has certain balling property, therefore, by desulfurated plaster It is added in raw material, the balling property of haydite can be improved.
Haydite is widely used in the fields such as building materials, gardening, food and drink, flame-proof thermal insulation material, chemical industry, oil, haydite Because the high premium properties application field of light, intensity can be more and more wider.At present, mainly using clay, shale, flyash as raw material system Make haydite, the more additions in the form of auxiliary material of desulfurated plaster prepare haydite, haydite has been prepared also by the use of iron selection tailings as primary raw material Report, but the technique that haydite is prepared after iron tailings is mixed with desulfurated plaster has not been reported.
CN103755322A discloses a kind of Low-silica iron ore tailings expanded ceramsite and preparation method thereof, primary raw material low-silicon iron tail Ore deposit accounts for 50-60%, does not add desulfurated plaster.
CN102815965A discloses a kind of Low-silica iron ore tailings porous ceramic grain and preparation method thereof, primary raw material low-silicon iron tail Ore deposit accounts for 75-90%, does not add desulfurated plaster.
CN103193458A discloses a kind of lytag material at high proportion for water process, desulfurated plaster conduct Auxiliary material adds, and dosage 4%, does not add iron tailings.
CN102643070A disclose it is a kind of using non-calcinated desulfurated plaster as the ceramsite insulation block of major gelled material and Its preparation method, primary raw material is desulfurated plaster and slag powders, not using iron tailings.
CN104710156A discloses a kind of track shield dregs haydite free of calcining and steam curing and preparation method thereof, and primary raw material is Track shield dregs 75-100 parts, desulfurated plaster add as auxiliary material, and dosage does not add iron tailings less than 7%.
The content of the invention
The purpose of the present invention is to be directed to caused desulfurated plaster and iron tailings in existing industrial processes to circulate profit The problem present on, there is provided a kind of using desulfurated plaster and iron tailings as haydite of primary raw material and preparation method thereof.
The present invention technical solution be:A kind of preparation method of desulfurated plaster and iron tailings haydite, including following system Standby step:
(1)Pretreatment of raw material:Desulfurated plaster, iron tailings, flyash and coal dust are respectively dried, levigate, 125 mesh excessively of dry grinding Sieve, take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing mixes:By step(1)Obtained raw materials by weight proportioning, the parts by weight of each raw material are:
10 ~ 20 parts of desulfurated plaster;
50 ~ 60 parts of iron tailings;
20 ~ 30 parts of flyash;
0 ~ 6 part of coal dust;
Mixed material is made after above raw material is well mixed;
(3)Pelletizing:Mixed material is added to pelletizing in disc balling machine, 5 ~ 15mm of screening green-ball finished product life Ball;
(4)Dry:Finished product green-ball is dried 2 ~ 4 hours under conditions of 100 DEG C ~ 120 DEG C;
(5)Preheating:Dried finished product green-ball is preheated 8 ~ 15 minutes under conditions of 260 DEG C ~ 500 DEG C;
(6)Roasting:Finished product green-ball after preheating is quickly transferred under the conditions of 1080 DEG C ~ 1200 DEG C and is calcined, is calcined Time is 25 ~ 35 minutes, and ripe ball is made;
(7)Cooling:By ripe ball residual temperature natural cooling, the haydite using desulfurated plaster and iron tailings as primary raw material is obtained.
As preferred, the water of adding of balling process is added in the form of spray water.
As optimal case:Dispensing, 57 parts of iron tailings, 17 parts of desulfurated plaster, 22 parts of flyash, 4 parts of coal dust;Preheating temperature 300 DEG C, 1110 DEG C of sintering temperature, roasting time 30min.
As preferred, iron tailings is the mine tailing of mineral processing plant, and its fineness is -88 μm and accounts for 80.8%.
As preferred, desulfurated plaster is the desulfurization waste material in sintering plant or power plant, adds and is beneficial to balling-up and improves haydite Energy.
As preferred, flyash is the accessory substance after the fire coal of thermal power plant, is added to improve raw silicon aluminium content.
As preferred, coal dust be anthracite it is levigate after undersized product, play fuel and pore creating material.
A kind of haydite prepared using above-mentioned preparation method, the main thing of the haydite is mutually diopside(CaMgSi2O6), Calcium aluminosilicate (CaAl2Si2O8), anorthite(CaMgSi2O6)With pyroxene (Ca4Mg3FeSi8O24);The diopside and anorthite Crystal is tabular or sheet-pile shape.
As preferred, haydite bulk density is 700 ~ 900Kg/m3, 1h water absorption rates be 5 ~ 10%, cylindrical compress strength be 4.0 ~ 6.0MPa.。
The beneficial effects of the invention are as follows:The present invention is solved to mix desulfurated plaster and iron tailings and prepared as primary raw material The technical problem of haydite;The proportion scale of desulfurated plaster is improved, adds its resource utilization;Desulfurization stone is added in dispensing The adhesive property that cream improves material is easy to balling-up, while the thing phase such as diopside and calcium aluminosilicate is generated in haydite, improves pottery The intensity of grain simultaneously reduces the water absorption rate of haydite;This preparation method technique is simple, easy to operate, and production cost is low;Prepared pottery Grain meets《Light-weight aggregate and its experimental method GB/T 17431.1-2010》The quality requirement of middle defined product.
Brief description of the drawings
Fig. 1 is a kind of process chart of the preparation method of desulfurated plaster and iron tailings haydite.
Fig. 2 is the XRD spectrum of desulfurated plaster and iron tailings haydite.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description, not to the limit of its protection domain System.
All embodiments of the invention are identical using raw material, and the chemical analysis results of iron tailings, desulfurated plaster and flyash are such as Table 1.
The chemical analysis results of the iron tailings of table 1, desulfurated plaster and flyash
Embodiment 1.
As shown in figure 1, the preparing raw material components by weight percentage of the haydite includes 13 parts of desulfurated plasters, 59 parts of iron tails Ore deposit, 24 parts of flyash and 4 parts of coal dusts.Characterization step using desulfurated plaster and iron tailings as the preparation method of the haydite of primary raw material For:
(1)Material pre-processes, and desulfurated plaster, iron tailings, flyash and coal dust are distinguished into levigate, drying, cross 125 mesh sieves, Take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing is mixed, and each component is weighed by weight, and mixed material is made after being well mixed;
(3)Pelletizing, mixed material is added to pelletizing in disc balling machine, balling process adds water with the shape of spray water Formula adds, and screens 5 ~ 15mm green-ball finished product green-ball;
(4)Dry, finished product green-ball is dried 3 hours under conditions of 110 DEG C;
(5)Preheating, dried finished product green-ball is preheated 10 minutes under conditions of 300 DEG C;
(6)Roasting, the finished product green-ball after preheating is quickly transferred under the conditions of 1130 DEG C and is calcined, roasting time 30 Minute, ripe ball is made;
(7)Cooling, ripe ball is cooled down at room temperature, obtains the haydite using desulfurated plaster and iron tailings as primary raw material.
Gained desulfurated plaster and iron tailings mixing haydite bulk density are 759Kg/m3, 1h water absorption rates are 9.5%, cylinder pressure Spend for 4.1MPa, satisfaction《Light-weight aggregate and its experimental method GB/T 17431.1-2010》The quality requirement of middle defined product.
Embodiment 2.
As shown in figure 1, the preparing raw material components by weight percentage of the haydite includes 15 parts of desulfurated plasters, 60 parts of iron tails Ore deposit, 21 parts of flyash and 4 parts of coal dusts.It is using the step of preparation method as the haydite of primary raw material of desulfurated plaster and iron tailings:
(1)Material pre-processes, and desulfurated plaster, iron tailings, flyash and coal dust are distinguished into levigate, drying, cross 125 mesh sieves, Take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing is mixed, and each component is weighed by weight, and mixed material is made after being well mixed;
(3)Pelletizing, mixed material is added to pelletizing in disc balling machine, balling process adds water with the shape of spray water Formula adds, and screens 5 ~ 15mm green-ball finished product green-ball;
(4)Dry, finished product green-ball is dried 3 hours under conditions of 110 DEG C;
(5)Preheating, dried finished product green-ball is preheated 15 minutes under conditions of 300 DEG C;
(6)Roasting, the finished product green-ball after preheating is quickly transferred under the conditions of 1110 DEG C and is calcined, roasting time 30 Minute, ripe ball is made;
(7)Cooling, ripe ball is cooled down at room temperature, obtains the haydite using desulfurated plaster and iron tailings as primary raw material.
Gained desulfurated plaster and iron tailings mixing haydite bulk density are 895Kg/m3, 1h water absorption rates are 8.8%, cylinder pressure Spend for 4.6MPa, satisfaction《Light-weight aggregate and its experimental method GB/T 17431.1-2010》The quality requirement of middle defined product.
Embodiment 3.
As shown in figure 1, the preparing raw material components by weight percentage of the haydite includes 20 parts of desulfurated plasters, 55 parts of iron tails Ore deposit, 21 parts of flyash and 4 parts of coal dusts.It is using the step of preparation method as the haydite of primary raw material of desulfurated plaster and iron tailings:
(1)Material pre-processes, and desulfurated plaster, iron tailings, flyash and coal dust are distinguished into levigate, drying, cross 125 mesh sieves, Take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing is mixed, and each component is weighed by weight, and mixed material is made after being well mixed;
(3)Pelletizing, mixed material is added to pelletizing in disc balling machine, balling process adds water with the shape of spray water Formula adds, and screens 5 ~ 15mm green-ball finished product green-ball;
(4)Dry, finished product green-ball is dried 2 hours under conditions of 110 DEG C;
(5)Preheating, dried finished product green-ball is preheated 12 minutes under conditions of 300 DEG C;
(6)Roasting, the finished product green-ball after preheating is quickly transferred under the conditions of 1130 DEG C and is calcined, roasting time 30 Minute, ripe ball is made;
(7)Cooling, ripe ball is cooled down at room temperature, obtains the haydite using desulfurated plaster and iron tailings as primary raw material.
Gained desulfurated plaster and iron tailings mixing haydite bulk density are 792Kg/m3, 1h water absorption rates are 9.1%, cylinder pressure Spend for 5.0MPa, satisfaction《Light-weight aggregate and its experimental method GB/T 17431.1-2010》The quality requirement of middle defined product.
Embodiment 4.
As shown in figure 1, the preparing raw material components by weight percentage of the haydite includes 18 parts of desulfurated plasters, 50 parts of iron tails Ore deposit, 29 parts of flyash and 3 parts of coal dusts.It is using the step of preparation method as the haydite of primary raw material of desulfurated plaster and iron tailings:
(1)Material pre-processes, and desulfurated plaster, iron tailings, flyash and coal dust are distinguished into levigate, drying, cross 125 mesh sieves, Take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing is mixed, and each component is weighed by weight, and mixed material is made after being well mixed;
(3)Pelletizing, mixed material is added to pelletizing in disc balling machine, balling process adds water with the shape of spray water Formula adds, and screens 5 ~ 15mm green-ball finished product green-ball;
(4)Dry, finished product green-ball is dried 3.5 hours under conditions of 115 DEG C;
(5)Preheating, dried finished product green-ball is preheated 15 minutes under conditions of 400 DEG C;
(6)Roasting, the finished product green-ball after preheating is quickly transferred under the conditions of 1130 DEG C and is calcined, roasting time 30 Minute, ripe ball is made;
(7)Cooling, ripe ball is cooled down at room temperature, obtains the haydite using desulfurated plaster and iron tailings as primary raw material.
Gained desulfurated plaster and iron tailings mixing haydite bulk density are 765Kg/m3, 1h water absorption rates are 9.4%, cylinder pressure Spend for 4.5MPa, satisfaction《Light-weight aggregate and its experimental method GB/T 17431.1-2010》The quality requirement of middle defined product.
Embodiment 5, the embodiment are most preferably scheme.
As shown in figure 1, the preparing raw material components by weight percentage of the haydite includes 17 parts of desulfurated plasters, 57 parts of iron tails Ore deposit, 22 parts of flyash and 4 parts of coal dusts.It is using the step of preparation method as the haydite of primary raw material of desulfurated plaster and iron tailings:
(1)Material pre-processes, and desulfurated plaster, iron tailings, flyash and coal dust are distinguished into levigate, drying, cross 125 mesh sieves, Take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing is mixed, and each component is weighed by weight, and mixed material is made after being well mixed;
(3)Pelletizing, mixed material is added to pelletizing in disc balling machine, balling process adds water with the shape of spray water Formula adds, and screens 5 ~ 15mm green-ball finished product green-ball;
(4)Dry, finished product green-ball is dried 3.5 hours under conditions of 115 DEG C;
(5)Preheating, dried finished product green-ball is preheated 15 minutes under conditions of 300 DEG C;
(6)Roasting, the finished product green-ball after preheating is quickly transferred under the conditions of 1110 DEG C and is calcined, roasting time 30 Minute, ripe ball is made;
(7)Cooling, ripe ball is cooled down at room temperature, obtains the haydite using desulfurated plaster and iron tailings as primary raw material.
Gained desulfurated plaster and iron tailings mixing haydite bulk density are 825Kg/m3, 1h water absorption rates are 8.1%, cylinder pressure Spend for 5.3MPa, satisfaction《Light-weight aggregate and its experimental method GB/T 17431.1-2010》The quality requirement of middle defined product.
As shown in Fig. 2 desulfurated plaster is mutually diopside with main thing in iron tailings haydite(CaMgSi2O6), calcium aluminosilicate (CaAl2Si2O8), anorthite(CaMgSi2O6)With pyroxene (Ca4Mg3FeSi8O24);Diopside and anorthite crystal are generally plate Shape or sheet-pile shape, the firing temperature of haydite can be reduced, the vitreum filling after melting between particles, subtracts Pottery product Few space, become fine and close, so as to improve the mechanical strength of haydite, reduce water absorption rate, improve the performance of haydite.

Claims (9)

1. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material, it is characterised in that prepared including following Step:
(1)Pretreatment of raw material:Desulfurated plaster, iron tailings, flyash and coal dust are respectively dried, levigate, 125 mesh sieves excessively of dry grinding, Take the raw material of the obtained dispensing in lower part of screen point;
(2)Dispensing mixes:By step(1)Obtained raw materials by weight proportioning, the parts by weight of each raw material are:
10 ~ 20 parts of desulfurated plaster;
50 ~ 60 parts of iron tailings;
20 ~ 30 parts of flyash;
0 ~ 6 part of coal dust;
Mixed material is made after above raw material is well mixed;
(3)Pelletizing:Mixed material is added to pelletizing in disc balling machine, screens 5 ~ 15mm green-ball finished product green-ball;
(4)Dry:Finished product green-ball is dried 2 ~ 4 hours under conditions of 100 DEG C ~ 120 DEG C;
(5)Preheating:Dried finished product green-ball is preheated 8 ~ 15 minutes under conditions of 260 DEG C ~ 500 DEG C;
(6)Roasting:Finished product green-ball after preheating is quickly transferred under the conditions of 1080 DEG C ~ 1200 DEG C and is calcined, roasting time For 25 ~ 35 minutes, ripe ball is made;
(7)Cooling:By ripe ball residual temperature natural cooling, the haydite using desulfurated plaster and iron tailings as primary raw material is obtained.
2. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material according to claim 1, its It is characterised by that the water of adding of balling process is added in the form of spray water.
3. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material according to claim 1, its It is characterised by that optimal case is:
Dispensing, 57 parts of iron tailings, 17 parts of desulfurated plaster, 22 parts of flyash, 4 parts of coal dust;300 DEG C of preheating temperature, sintering temperature 1110 DEG C, roasting time 30min.
4. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material according to claim 1, its The mine tailing that iron tailings is mineral processing plant is characterised by, its fineness is -88 μm and accounts for 80.8%.
5. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material according to claim 1, its It is characterised by desulfurated plaster for sintering plant or the desulfurization waste material in power plant.
6. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material according to claim 1, its It is the accessory substance after the fire coal of thermal power plant to be characterised by flyash.
7. a kind of preparation method using desulfurated plaster and iron tailings as the haydite of primary raw material according to claim 1, its It is characterised by undersized product of the coal dust for anthracite after levigate.
8. a kind of usage right requires haydite prepared by any described preparation methods of 1-7, it is characterised in that the master of the haydite It is mutually diopside to want thing(CaMgSi2O6), calcium aluminosilicate (CaAl2Si2O8), anorthite(CaMgSi2O6)And pyroxene (Ca4Mg3FeSi8O24);Diopside and the anorthite crystal is tabular or sheet-pile shape.
9. haydite according to claim 8, it is characterised in that haydite bulk density is 700 ~ 900Kg/m3, 1h water absorption rates are 5.0 ~ 10%, cylindrical compress strength is 4.0 ~ 6.0MPa.
CN201610019831.2A 2016-01-13 2016-01-13 A kind of desulfurated plaster and iron tailings haydite and preparation method thereof Expired - Fee Related CN105669243B (en)

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CN106316358A (en) * 2015-06-26 2017-01-11 安徽建晟纪元新材料科技有限公司 Preparation method of ceramsite
CN106083156A (en) * 2016-06-28 2016-11-09 平凉华晨非金属应用科技有限公司 Desulfurated plaster lightweight through hole haydite
CN107619297B (en) * 2017-08-29 2020-05-19 大连地拓环境科技有限公司 Preparation method of tailing ceramsite light permeable brick
CN107473763B (en) * 2017-09-25 2020-06-26 贵州开磷磷石膏综合利用有限公司 Phosphogypsum ceramsite for sewage filtration and preparation method thereof
CN108821780A (en) * 2018-06-21 2018-11-16 湖南双晟科技信息咨询有限公司 A method of haydite is prepared using activated sludge
CN110330359A (en) * 2019-04-02 2019-10-15 武汉理工大学 It is a kind of using iron tailings as novel light aggregate foaming agent of raw material and preparation method thereof

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CN102643070A (en) * 2012-05-11 2012-08-22 同济大学 Ceramsite heat-preservation building block using non-calcined desulfurized gypsum as main cementing material and preparation method thereof

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