CN107915471A - A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln - Google Patents
A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln Download PDFInfo
- Publication number
- CN107915471A CN107915471A CN201711245386.2A CN201711245386A CN107915471A CN 107915471 A CN107915471 A CN 107915471A CN 201711245386 A CN201711245386 A CN 201711245386A CN 107915471 A CN107915471 A CN 107915471A
- Authority
- CN
- China
- Prior art keywords
- granularity
- powder
- iron
- rotary kiln
- light thermal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1305—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/30—Drying methods
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/068—Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and wt% are：30~60wt% of alumina fine powder of granularity≤0.088mm, 30~60wt% of kaolinite soil property gangue powder of granularity≤0.088mm, 1~6wt% of bentonite of granularity≤0.088mm, 0.5~3wt% of coal dust or coke blacking of granularity≤0.088mm, iron ore tailings 0.5~the 10wt% of powder, 0.01~0.5wt% of methylcellulose of granularity≤0.088mm；Water is added by the 3~15% of above-mentioned raw materials total weight percent.Its step：Iron ore tailings are spontaneously dried；It is mixed and finely ground；It is granulated；It is dry；Preheating；Roasting.The present invention prepares light thermal-insulation aggregate using 5,000,000 tons of pelletizing producing lines are produced per year, cost reduction can be made to be not less than 60%, and fully utilize iron ore tailings.1800~2300kg/m of its aggregate bulk density3, particle compressive resistance of the granularity in 5 ~ 8mm be not less than 3KN.
Description
Technical field
The present invention relates to a kind of inorganic material and preparation method, particularly belongs to prepare iron-stone tail using large-sized rotary kiln
The light thermal-insulation aggregate and method of ore deposit.
Background technology
Light thermal-insulation aggregate is mainly used for heat-insulated stove, insulation, civilian fireproof heat insulating heat insulating function, abroad market dosage
Extensively, especially skyscraper.Past production is generally produced with small-sized rotary kiln, low output, high energy consumption, price, thus
Limit its use in civil engineering.Domestic pelletizing grate kiln has 50 a plurality of production lines, and general scale exists
Ten thousand tons/year of 120-240.
Needed with the technological progress and reduction production cost of steel and iron industry, pelletizing dosage is up in the past in blast furnace burden
To 20%, present iron-smelter is intended to pelletizing dosage being reduced to 5% or so, this comes for producing 5000000 tons of large-sized rotary kiln per year
Say, then mean to produce pelletizing amount energy less, the prouctiveness of equipment can be reduced, it is impossible to be made the best use of everything, it may appear that production
The phenomenon that ability is had more than needed.
The applicant analyzes according to present case, it is believed that if pelletizing can both be produced with large-sized rotary kiln, can also produce light
Vacuum aggregate, then can be such that production cost is decreased since energy consumption is greatly lowered；If the cost of raw material is low,
The price of the insulation lightweight aggregate produced by large-sized rotary kiln can also be decreased further.
Common alumina and kaolinite soil property gangue ore deposit belongs to general miscellaneous ore deposit or associated mineral, for doing refractory material
There are impurity it is more the problem of, for High-temp. kiln there are security risk, influence using effect.And keep the temperature light bone with rotary kiln production
Material, but because its sintering temperature is high, causes energy consumption excessive.Steel industry, cannot after ore dressing there are substantial amounts of iron ore tailings
It is existing to cause natural calamity using as Tailings Dam, there are the risk of rainy season dam break, and environment is polluted, but again can conduct
The acceleration of sintering agent of these common alumina and kaolinite soil property gangue ore deposit, for producing civilian fire resistant heat preserving lightweight aggregate product,
Reduce firing temperature.
How common alumina and kaolin shale resource are utilized, and iron ore tailings can be comprehensively utilized, and using large-scale
Pelletizing rotary kiln produces fire resistant heat preserving aglite, is crucial using suitable composition of raw materials, can be dropped by appropriate composition
Sintering temperature and low, shortens firing time, reaches the performance requirement of product.
Through retrieval：China Patent No. is the document of CN201210373205.5, discloses one kind《Attapulgite volcaniclastic rock
Light-weight refractory aggregate sand》, its composition includes:The viscous concavo-convex stone clay powder 2~15% of height, Concave-convex clay rod tailing 5~25%, volcano
Clastic rock mixture 15~30%, diatomite tailing 5~25%, expanded vermiculite 2~20%, gangue 2~15%, bentonite tailing 2
~15% and plant straw powder 1~10%.Extruded after powder mixing in flakes, no more than 3mm；Burn till, be broken into small at 650~850 DEG C
It is stand-by in the particle of 1mm.Used as fire resisting lightweight aggregate.
China Patent No. is the document of CN97121967.2, and it discloses one kind《Break-free light refractory aggregate》, it is special
Sign is that the type wheel working surface of specifically crowded ball equipment is processed into below 20mm, and optimal aggregate size is the circle of 3~15mm
Or oblong pits, exempt from broken refractory aggregate for produce clayey, High-Alumina, mullite and spinel.
China Patent No. is the document of CN201010159664.4, it discloses《A kind of high-purity high-strength light-weight mullite is resistance to
Fiery aggregate and preparation method thereof》, its composition includes:Natural silica 20~30%, commercial alumina 70~80%, industrial dextrin are tied
Mixture 4~6%, hydroxymethyl cellulose do additive 0.3~1.0%, carbonaceous burns lost article（Anthracite, carbon black or graphite）25~35%.
First wear into less than the powder below 200 mesh, add the honed 600-700 mesh sieves of water polo, squeeze mud drying, 100~200 DEG C of drying temperature
24-36h, 24~36h is roasted at 1300~1400 DEG C of calcination temperature, obtains block mullite lightweight aggregate.
China Patent No. is the document of CN201510687809.0, it discloses《A kind of high-strength light refractory aggregate》,
It is characterized in that 60~62 parts of aluminium oxide, 18~20 parts of fused magnesite, 0.5~0.8 part of alumina powder, perlite powder 0.5
Part, 0.2 part of sericite in powder, 0.6~0.9 part of Lei mountain flours.Its preparation process includes batch mixing, clamp dog, drying, roasting, cooling.Pre-
30-40min is dried in hot temperature~180 DEG C, keeps the temperature 10min；160min is roasted at 1500 DEG C of calcination temperature, can be burnt out high-strength
Spend light-weight refractory aggregate.
China Patent No. is the document of CN201410412504.4, it discloses《A kind of light thermal insulation fire-resistant material and its
Preparation process》, it is characterised in that consisting of magnesite powder 20~70%, light-magnesite powder 10~40%, alumine powder 30
~80%, aluminium hydrate powder 10~50%, lost article powder 5~15%, external adding water 5~10%, polyvinyl alcohol bonding agent 3~5% can be burnt.Its
Preparation process includes batch mixing, pressed compact, drying, roasting, cooling.In 120 DEG C of dry 12-36h of preheating temperature, firing temperature 1400~
3~7h is roasted at 1600 DEG C.
China Patent No. is the document of CN201210003104.9, it discloses《A kind of Lightweight anorthite microporous refractory bone
The preparation method of material》, its composition includes:Kaolin 20~40%, silica 15~20%, bauxite 15~30%, lime stone 0~
30%th, calcium hydroxide 0~25%.First wear into less than the powder below 200 mesh, ball milling crosses 25 tm screens, and outer addition dextrin 3~6% is pressed
Base spontaneously dries 24h, and 100~200 DEG C dry 24-48h, roast 24~36h at 1100~1300 DEG C of calcination temperature, obtain block
Shape anorthite micropore aggregate.
China Patent No. is the document of CN201510981871.0, it discloses《A kind of high-strength light alumina hollow ball
The preparation method of product》, it is characterised in that enhancing alumina hollow ball product intensity material be calcium hexaluminate, by aluminium oxide with
Calcium oxide high-temperature firing forms, and calcium oxide is introduced by aluminous cement, its addition for alumina powder amount 19.4~
33.8%.Pore creating material, dispersant, water are added into alumina powder, aluminous cement, is mixed to get slurry, injection forming, takes off
Mould is dried, sintering.0.6~1.16g/cm of density can be burnt out3, 4.83~13.42MPa of compressive resistance, thermal conductivity 0.265
The hollow ball product of~0.464w/mk.
China Patent No. is the document of CN201010602481.5, it discloses《A kind of lightweight calcium hexaluminate-magnalium point is brilliant
The composite microporous refractory aggregate of stone and preparation method》, its composition includes:Lime stone 3~7%, magnesite 12~18%, industrial hydrogen-oxygen
Change aluminium 75~85%, bonding agent 3~6%.External adding water 60~80% first wears into the mud less than 18~23 microns, is stranded water, naturally dry
Dry, 100~180 DEG C of drying 24-48h, 24~36h is roasted at 1400~1600 DEG C of calcination temperature, obtain block calcium hexaluminate-
Magnesium aluminate spinel micropore aggregate.
China Patent No. is the document of CN201410688444.9, it discloses《A kind of micro- closed pore corundum containing magnesium of lightweight is resistance to
Fiery aggregate and preparation method》, its composition includes:Gamma alumina powder 80~90%, nano alumina powder 1~10%, magnesia are micro-
Powder 1~10%.0.5~the 3h of first ball milling of external adding water 40~70%, slurry dewatering, slip casting enter mould and spontaneously dry 12~24h, 110~
200 DEG C dry 12-36h, roast 1~8h at 1750~1900 DEG C of firing temperature, obtain the micro- closed pore aggregate of corundum containing magnesium.
China Patent No. is the document of CN201210173259.7, it discloses《A kind of light porous mullite flame-proof bone
Material and preparation method》, its composition includes:Silica 30~40%, industrial aluminium hydroxide 60~70%, yellow starch gum bonding agent 2~4%,
Lignin sulfonic acid calcium additive 0.3~0.6%, coke fines, which are done, burns lost article 20~30%.External adding water wears into slurry, and filtering, squeezes mud,
Pressed compact, spontaneously dries 24h, and 100~150 DEG C dry 20-35h, roast 20~30h at 1350~1450 DEG C of calcination temperature, obtain
Micro-pore mullite product.
Through to above-mentioned searching document analysis, it is believed that these patents are matched somebody with somebody primarily as the aglite of refractory raw material rank
Side, there are firing temperature height, the deficiency of time length for it；And pelletizing rotary kiln firing temperature highest is less than 1300 DEG C, the firing time
It is short, it is difficult to which that production obtains the other lightweight aggregate of refractory grade.Can using large-scale pelletizing rotary kiln production fire resistant heat preserving aglite, then into
This is low, using raw material sources than wide, can meet the required insulation, heat-insulated, anti-of common building engineering, civil engineering
The demand of fire.
The content of the invention
The present invention utilizes common alumina and kaolinite soil property Coal Gangue Resource, then by adding iron ore tailings, and utilize
The method that large-scale pelletizing rotary kiln producing line prepares light thermal-insulation aggregate, can make production cost reduced rate be not less than 60%, and fully send out
The characteristics of energy consumption of waving large-sized rotary kiln is low, yield is big, also fully utilizes iron ore tailings resource at the same time；Light thermal-insulation aggregate
Physical property reaches 1800~2300kg/m of bulk density3, particle compressive resistance of the granularity in 5 ~ 8mm be not less than 3KN.
Realize the measure of above-mentioned purpose：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 30 of alumina the fine powder 30~60wt %, granularity≤0.088mm of granularity≤0.088mm~
The coal dust or coke blacking 0.5~3wt % of the bentonite 1~6wt %, granularity≤0.088mm of 60wt %, granularity≤0.088mm, grain
Iron ore tailings powder 0.5~10wt %, 0.01~0.5wt of the methylcellulose % of degree≤0.088mm；Water is total according to above-mentioned raw materials
The 3~15% of percentage by weight add；Its physical property is：1800~2300kg/m of bulk density3, of the granularity in 5 ~ 8mm
Grain compressive resistance is not less than 3KN.
Preferably：Granularity is no more than 0.088mm iron ore tailings powder in 1.0~8.5wt %.
Further：The mass percentage content of aluminium oxide and the sum of silica is not small in the kaolinite soil property gangue powder
In 90%.
Its with：Claim 1 is allowed to limit the raw material of granularity, amount of its total granularity more than 0.088mm is no more than
8wt%。
A kind of method for the light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its step：
1）Iron ore tailings are spontaneously dried, and control its moisture to be no more than 5wt%, it is stand-by；
2）First alumina, kaolinite soil property gangue, iron ore tailings are mixed and finely ground after weighing, and make the≤grain of 0.088mm
The weight percent content of degree is not less than 90%, and discharges into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 3~5 minutes；According to 3~15% water spray on made green-ball；
4）Green-ball is dried, drying temperature is 105~130 DEG C, and drying time is in 10-30min；
5）Preheated, for preheating temperature at 600~900 DEG C, preheating time is 15~30min；
6）Roasted, calcination temperature is 1200~1300 DEG C, and roasting time is in 15~25min.
Compared with prior art, the present invention using common alumina and kaolinite soil property Coal Gangue Resource, then by adding iron
Ore tailing, and using 5,000,000 tons of pelletizing producing lines are produced per year, the method for preparing light thermal-insulation aggregate, can make production cost reduced rate
Not less than 60%, the efficiency of large-sized rotary kiln has been given full play to, also fully utilize iron ore tailings at the same time, relative reduction iron
The accumulating amount of ore tailing, reduces the occupancy in pollution and place, and performance is made the best use of everything；Light thermal-insulation aggregate physical property is：Heap
1800~2300kg/m of product density3, particle compressive resistance of the granularity in 5 ~ 8mm be not less than 3KN.
Embodiment
The present invention is described in detail below：
Embodiment 1：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 60wt % of alumina the fine powder 30wt%, granularity≤0.088mm of granularity≤0.088mm, grain
The coal dust 2.5wt % of bentonite the 3wt %, granularity≤0.088mm of degree≤0.088mm, the iron ore tailings of granularity≤0.088mm
Powder 4wt %, methylcellulose 0.5wt %；Water is added according to the 8% of above-mentioned raw materials total weight percent；Kaolinite soil property gangue powder
The mass percentage content of the sum of middle aluminium oxide and silica is 92.5%；
Preparation method：
1）Iron ore tailings are spontaneously dried, its moisture is 4.5wt%, stand-by；
2）It is mixed and finely ground after first weighing alumina, kaolinite soil property gangue, iron ore tailings, the weight of≤0.088mm granularities
Measure degree be 99%, remaining 1% be more than 0.088mm granularities raw material；And discharge into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 3.5 minutes；And sprayed according to raw material gross weight percentage by 8% water on green-ball is made；
4）Green-ball is dried, drying temperature is 105~108 DEG C, drying time 20min；
5）Preheated, preheating temperature is at 605 DEG C, preheating time 30min；
6）Roasted, calcination temperature is 1210 DEG C, and roasting time is in 25min.
After testing, the bulk density of prepared light thermal-insulation aggregate is 2050kg/m3, compressive resistance 3.6KN；Through system
Meter, its rate of cost reduction are 65%.
Embodiment 2：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 31wt % of alumina the fine powder 60wt%, granularity≤0.088mm of granularity≤0.088mm, grain
The iron ore tailings powder of coal dust the 2wt %, granularity≤0.088mm of bentonite the 1wt %, granularity≤0.088mm of degree≤0.088mm
5.99wt %, methylcellulose 0.01wt %；Water is added according to the 15% of above-mentioned raw materials total weight percent；Kaolinite soil property bastard coal
The mass percentage content of the sum of aluminium oxide and silica is 95% in mountain flour；
Preparation method：
1）Iron ore tailings are spontaneously dried, its moisture is 3wt%, stand-by；
2）It is mixed and finely ground after first weighing alumina, kaolinite soil property gangue, iron ore tailings, the weight of≤0.088mm granularities
It is 100% to measure degree, and is discharged into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 3 minutes；And sprayed according to raw material gross weight percentage by 15% water on green-ball is made；
4）Green-ball is dried, drying temperature is 112~116 DEG C, drying time 12min；
5）Preheated, preheating temperature is at 675 DEG C, preheating time 15min；
6）Roasted, calcination temperature is 1235 DEG C, and roasting time is in 20min.
After testing, the bulk density of prepared light thermal-insulation aggregate is 2270kg/m3, compressive resistance 5.2KN；Through system
Meter, its rate of cost reduction are 67%.
Embodiment 3：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 35wt % of alumina the fine powder 48.6wt%, granularity≤0.088mm of granularity≤0.088mm,
The iron ore tail of coke blacking the 3wt %, granularity≤0.088mm of bentonite the 6wt %, granularity≤0.088mm of granularity≤0.088mm
Miberal powder 7wt %, methylcellulose 0.4wt %；Water is added according to the 9% of above-mentioned raw materials total weight percent；Kaolinite soil property gangue
The mass percentage content of the sum of aluminium oxide and silica is 96.5% in powder；
Preparation method：
1）Iron ore tailings are spontaneously dried, its moisture is 3.2wt%, stand-by；
2）It is mixed and finely ground after first weighing alumina, kaolinite soil property gangue, iron ore tailings, the weight of≤0.088mm granularities
It is 100% to measure degree, and is discharged into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 4 minutes；And sprayed according to raw material gross weight percentage by 9% water on green-ball is made；
4）Green-ball is dried, drying temperature is 115~120 DEG C, drying time 28min；
5）Preheated, preheating temperature is at 715 DEG C, preheating time 22min；
6）Roasted, calcination temperature is 1240 DEG C, and roasting time is in 16min.
After testing, the bulk density of prepared light thermal-insulation aggregate is 1970kg/m3, compressive resistance 4.1KN；Through system
Meter, its rate of cost reduction are 68%.
Embodiment 4：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 40wt % of alumina the fine powder 50wt%, granularity≤0.088mm of granularity≤0.088mm, grain
The coke blacking 1.5wt % of bentonite the 3.5wt %, granularity≤0.088mm of degree≤0.088mm, the iron ore of granularity≤0.088mm
Mine tailing 4.9wt %, methylcellulose 0.1wt %；Water is added according to the 7.5% of above-mentioned raw materials total weight percent；Kaolinite soil property
The mass percentage content of the sum of aluminium oxide and silica is 93.5% in bastard coal mountain flour；
Preparation method：
1）Iron ore tailings are spontaneously dried, its moisture is 3.6wt%, stand-by；
2）It is mixed and finely ground after first weighing alumina, kaolinite soil property gangue, iron ore tailings, the weight of≤0.088mm granularities
Measure degree be 98%, remaining 2% be more than 0.088mm granularities raw material；And discharge into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 5 minutes；And sprayed according to raw material gross weight percentage by 9% water on green-ball is made；
4）Green-ball is dried, drying temperature is 119~124 DEG C, drying time 21min；
5）Preheated, preheating temperature is at 805 DEG C, preheating time 24min；
6）Roasted, calcination temperature is 1295 DEG C, and roasting time is in 23min.
After testing, the bulk density of prepared light thermal-insulation aggregate is 2030kg/m3, compressive resistance 5.3KN；Through system
Meter, its rate of cost reduction are 65%.
Embodiment 5：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 38wt % of alumina the fine powder 47wt%, granularity≤0.088mm of granularity≤0.088mm, grain
The coke blacking 2.2wt % of bentonite the 2.5wt %, granularity≤0.088mm of degree≤0.088mm, the iron ore of granularity≤0.088mm
Mine tailing 10wt %, methylcellulose 0.3wt %；Water is added according to the 9.5% of above-mentioned raw materials total weight percent；Kaolinite soil property
The mass percentage content of the sum of aluminium oxide and silica is 94.5% in bastard coal mountain flour；
Preparation method：
1）Iron ore tailings are spontaneously dried, its moisture is 3.3wt%, stand-by；
2）It is mixed and finely ground after first weighing alumina, kaolinite soil property gangue, iron ore tailings, the weight of≤0.088mm granularities
It is 100% to measure degree；And discharge into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 6 minutes；And sprayed according to raw material gross weight percentage by 9.5% water on green-ball is made；
4）Green-ball is dried, drying temperature is 126~130 DEG C, drying time 27min；
5）Preheated, preheating temperature is at 886 DEG C, preheating time 29min；
6）Roasted, calcination temperature is 1275 DEG C, and roasting time is in 24min.
After testing, the bulk density of prepared light thermal-insulation aggregate is 1820kg/m3, compressive resistance 3.02KN；Through
Statistics, its rate of cost reduction are 73%.
Embodiment 6：
A kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its percentage by weight
Content is：The kaolinite soil property gangue powder 55wt % of alumina the fine powder 34wt%, granularity≤0.088mm of granularity≤0.088mm, grain
The coal dust 0.6wt % of bentonite the 4wt %, granularity≤0.088mm of degree≤0.088mm, the iron ore tailings of granularity≤0.088mm
Powder 6wt %, methylcellulose 0.4wt %；Water is added according to the 13% of above-mentioned raw materials total weight percent；Kaolinite soil property gangue
The mass percentage content of the sum of aluminium oxide and silica is 96.2% in powder；
Preparation method：
1）Iron ore tailings are spontaneously dried, its moisture is 2wt%, stand-by；
2）It is mixed and finely ground after first weighing alumina, kaolinite soil property gangue, iron ore tailings, the weight of≤0.088mm granularities
It is 100% to measure degree；And discharge into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 5 minutes；And sprayed according to raw material gross weight percentage by 13% water on green-ball is made；
4）Green-ball is dried, drying temperature is 121~127 DEG C, drying time 26min；
5）Preheated, preheating temperature is at 900 DEG C, preheating time 27min；
6）Roasted, calcination temperature is 1255 DEG C, and roasting time is in 25min.
After testing, the bulk density of prepared light thermal-insulation aggregate is 1920kg/m3, compressive resistance 5.6KN；Through system
Meter, its rate of cost reduction are 70.3%.
Above-described embodiment is only the best example, and is not the restriction to embodiments of the present invention.
Claims (5)
1. a kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln, its raw material composition and its weight percent
It is than content：The kaolinite soil property gangue powder 30 of alumina the fine powder 30~60wt %, granularity≤0.088mm of granularity≤0.088mm
The coal dust or coke blacking 0.5~3wt % of the bentonite 1~6wt %, granularity≤0.088mm of~60wt %, granularity≤0.088mm,
Iron ore tailings powder 0.5~10wt %, 0.01~0.5wt of the methylcellulose % of granularity≤0.088mm；Water is according to above-mentioned raw materials
The 3~15% of total weight percent add；Its physical property is：1800~2300kg/m of bulk density3, of the granularity in 5 ~ 8mm
Grain compressive resistance is not less than 3KN.
2. a kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln as claimed in claim 1, it is special
Sign is：Granularity is no more than 0.088mm iron ore tailings powder in 1.0~8.5wt %.
3. a kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln as claimed in claim 1, it is special
Sign is：The mass percentage content of the sum of aluminium oxide and silica is not less than 90% in the kaolinite soil property gangue powder.
4. a kind of light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln as claimed in claim 1, it is special
Sign is：Claim 1 is allowed to limit the raw material of granularity, amount of its total granularity more than 0.088mm is no more than 8wt%.
A kind of 5. side for the light thermal-insulation aggregate that iron-stone tailing is prepared using large-sized rotary kiln as claimed in claim 1
Method, its step：
1）Iron ore tailings are spontaneously dried, and control its moisture to be no more than 5wt%, it is stand-by；
2）First alumina, kaolinite soil property gangue, iron ore tailings are mixed and finely ground after weighing, and make the≤grain of 0.088mm
The weight percent content of degree is not less than 90%, and discharges into feed bin；
3）It is granulated：By step 3）Bentonite, coal dust, methylcellulose after levigate mixed powder and weighing is in comminutor
Mixing 3~5 minutes；According to 3~15% water spray on made green-ball；
4）Green-ball is dried, drying temperature is 105~130 DEG C, and drying time is in 10-30min；
5）Preheated, for preheating temperature at 600~900 DEG C, preheating time is 15~30min；
6）Roasted, calcination temperature is 1200~1300 DEG C, and roasting time is in 15~25min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245386.2A CN107915471A (en) | 2017-12-01 | 2017-12-01 | A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245386.2A CN107915471A (en) | 2017-12-01 | 2017-12-01 | A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107915471A true CN107915471A (en) | 2018-04-17 |
Family
ID=61898177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711245386.2A Pending CN107915471A (en) | 2017-12-01 | 2017-12-01 | A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107915471A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104975A (en) * | 2019-05-15 | 2019-08-09 | 中南大学 | A kind of technique that belt type roasting machine pelletizing method prepares gangue lightweight aggregate |
| CN111943542A (en) * | 2020-08-05 | 2020-11-17 | 辽宁科技大学 | Method for preparing aluminum-titanium slag lightweight aggregate by using biological material |
| CN114751767A (en) * | 2022-04-07 | 2022-07-15 | 河南城建学院 | Porous aggregate for internal curing of ultrahigh-performance concrete and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127418A (en) * | 2010-12-29 | 2011-07-20 | 北京奇想达科技有限公司 | Ultralight-weight proppant and preparation method thereof |
| KR20130009000A (en) * | 2011-07-14 | 2013-01-23 | 이강선 | Coal gangue ceramsite and its preparation approach |
| CN103755322A (en) * | 2013-11-29 | 2014-04-30 | 武汉钢铁(集团)公司 | Low-silicon iron tailing expansion ceramsite and preparation method thereof |
| CN104591696A (en) * | 2015-02-12 | 2015-05-06 | 武汉钢铁(集团)公司 | Blast furnace heavy slag heat-preservation ceramsite and preparation method thereof |
| CN105885820A (en) * | 2016-04-25 | 2016-08-24 | 太原科技大学 | Ceramsite proppant for well producing coalbed methane from coal gangue and preparation method thereof |
| CN106045565A (en) * | 2016-06-02 | 2016-10-26 | 福建省建筑科学研究院 | Light high-strength ceramsite and preparation method thereof |
| CN106977225A (en) * | 2017-04-18 | 2017-07-25 | 武汉科技大学 | Iron tailing sintered porous material and preparation method thereof |
-
2017
- 2017-12-01 CN CN201711245386.2A patent/CN107915471A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127418A (en) * | 2010-12-29 | 2011-07-20 | 北京奇想达科技有限公司 | Ultralight-weight proppant and preparation method thereof |
| KR20130009000A (en) * | 2011-07-14 | 2013-01-23 | 이강선 | Coal gangue ceramsite and its preparation approach |
| CN103755322A (en) * | 2013-11-29 | 2014-04-30 | 武汉钢铁(集团)公司 | Low-silicon iron tailing expansion ceramsite and preparation method thereof |
| CN104591696A (en) * | 2015-02-12 | 2015-05-06 | 武汉钢铁(集团)公司 | Blast furnace heavy slag heat-preservation ceramsite and preparation method thereof |
| CN105885820A (en) * | 2016-04-25 | 2016-08-24 | 太原科技大学 | Ceramsite proppant for well producing coalbed methane from coal gangue and preparation method thereof |
| CN106045565A (en) * | 2016-06-02 | 2016-10-26 | 福建省建筑科学研究院 | Light high-strength ceramsite and preparation method thereof |
| CN106977225A (en) * | 2017-04-18 | 2017-07-25 | 武汉科技大学 | Iron tailing sintered porous material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104975A (en) * | 2019-05-15 | 2019-08-09 | 中南大学 | A kind of technique that belt type roasting machine pelletizing method prepares gangue lightweight aggregate |
| CN110104975B (en) * | 2019-05-15 | 2021-06-08 | 中南大学 | Process for preparing coal gangue lightweight aggregate by belt type roasting machine pelletizing method |
| CN111943542A (en) * | 2020-08-05 | 2020-11-17 | 辽宁科技大学 | Method for preparing aluminum-titanium slag lightweight aggregate by using biological material |
| CN114751767A (en) * | 2022-04-07 | 2022-07-15 | 河南城建学院 | Porous aggregate for internal curing of ultrahigh-performance concrete and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103570340B (en) | Architectural ceramic prepared from industrial solid waste through dry method and process for preparing architectural ceramic | |
| CN103819211B (en) | CFBB lightweight wear-resistant plastic refractory and preparation method thereof | |
| CN105217986B (en) | With the method for novel dry-process rotary kiln line processing waste gypsum producing building land plaster | |
| CN103586399A (en) | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof | |
| CN104725058B (en) | Periclase-magnesium ferrum hercynite/forsterite composite brick | |
| CN107915471A (en) | A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln | |
| US20160053162A1 (en) | Method of manufacturing of light ceramic proppants and light ceramic proppants | |
| CN109776067A (en) | A method of sintering seepy material is prepared using clay | |
| CN103664206B (en) | Wet process production technology for sintering cordierite | |
| CN102674723A (en) | Cementing material made of earthy yellow malm and used for repairing masonry cultural relics | |
| CN108569910A (en) | A kind of preparation method of building porcelain granule and its haydite | |
| WO2011005150A2 (en) | Method for producing a semi-finished product for the manufacture of building materials | |
| BRPI1010034A2 (en) | method for producing a fine material agglomerate containing metal oxide for use as blast furnace feed material | |
| CN102765931B (en) | Method for preparing ceramic material utilizing magnetic separation tail sludge from steel slag wet process | |
| CN105601259A (en) | Method using high bauxite crushed aggregates to produce and prepare sintered alumina | |
| CN107721359A (en) | A kind of high-efficiency environment friendly permeable pavement brick | |
| CN106866091A (en) | The system and method that a kind of utilization mineralized waste prepares building 3D printing material | |
| CN103755379A (en) | Method of preparing foamed air brick by taking iron tailings as main material | |
| CN104891959A (en) | Embedding and sintering method for production of ceramsite from raw materials of red mud and tile waste | |
| CN102659360B (en) | Iron tailing steam curing brick and preparation method thereof | |
| CN107337457A (en) | A kind of can-type calcine furnace mullite silicon-carbon refractory brick and preparation method thereof | |
| CN106396696B (en) | The preparation method of mullite spherical shape aggregate enhancing refractory material | |
| CN109836128A (en) | Utilize the haydite and preparation method thereof of aggregate sandstone tailing production | |
| JPH11335146A (en) | Production of artificial lightweight aggregate and artificial lightweight aggregate obtained by the method | |
| TW202134202A (en) | Method for manufacturing of high strength structural lightweight aggregates by an energy-saving and nitrogen-reducing rotary kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180417 |
|
| RJ01 | Rejection of invention patent application after publication |