CN109081681A - A kind of fired brick and preparation method thereof - Google Patents
A kind of fired brick and preparation method thereof Download PDFInfo
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- CN109081681A CN109081681A CN201810979895.6A CN201810979895A CN109081681A CN 109081681 A CN109081681 A CN 109081681A CN 201810979895 A CN201810979895 A CN 201810979895A CN 109081681 A CN109081681 A CN 109081681A
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- extraction tailings
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- titanium extraction
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- 239000011451 fired brick Substances 0.000 title claims description 57
- 238000002360 preparation method Methods 0.000 title claims description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000010936 titanium Substances 0.000 claims abstract description 82
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 82
- 238000000605 extraction Methods 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 239000011449 brick Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims description 20
- 230000032683 aging Effects 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 description 11
- 238000005245 sintering Methods 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 4
- 238000000280 densification Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- -1 gangue Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- 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
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明提供了一种烧结砖的制备方法，包括：将提钛尾渣、页岩和煤矸石混合，得到干混料；将所述干混料和水混合，得到湿混料；将所述湿混料挤出成型，得到砖坯；将所述砖坯干燥后焙烧，得到烧结砖。提钛尾渣内部含有5～8％的游离碳，发热值达到了100～300kJ/kg，利用提钛尾渣的特点，可以制备出烧结砖建材产品。与现有技术的烧结页岩砖相比，本发明提供的方法制备得到的烧结砖具有下述优点：原料来源广泛、廉价易得；生产工艺简单，成本较低，砖坯成型性好，表面质量好，易烧结，强度高；能实现提钛尾渣资源的高效综合利用，符合当前循环经济政策要求。本发明还提供了一种上述技术方案所述的方法制备得到的烧结砖。The invention provides a method for preparing sintered bricks, comprising: mixing the titanium extraction tailings, shale and coal gangue to obtain a dry mixture; mixing the dry mixture with water to obtain a wet mixture; The wet mixture is extruded to obtain adobe; the adobe is dried and then fired to obtain a sintered brick. The titanium extraction tailings contain 5-8% free carbon, and the calorific value has reached 100-300kJ/kg. Utilizing the characteristics of the titanium extraction tailings, sintered brick building materials can be prepared. Compared with the sintered shale bricks of the prior art, the sintered bricks prepared by the method provided by the present invention have the following advantages: wide sources of raw materials, cheap and easy to obtain; simple production process, low cost, good moldability of bricks, surface quality Good, easy to sinter, high strength; can realize efficient and comprehensive utilization of titanium tailings resources, in line with the current circular economy policy requirements. The present invention also provides a sintered brick prepared by the method described in the above technical solution.
Description
Technical field
The present invention relates to brick-making technology fields more particularly to a kind of fired brick and preparation method thereof.
Background technique
It climbs steel and generates 7,000,000 tons of titanium-containing blast furnace slag or more every year, currently carry out the research of titanium-containing blast furnace slag titanium extracting technology,
Demonstration line has been built up, there are a large amount of titanium extraction tailings to generate at that time, it is necessary to walk resource utilization approach, just be able to achieve entire height
The greenization of clinker titanium extracting technology whole process cleans development model.
How to realize that the reasonable of titanium extraction tailings utilizes the hot spot for becoming those skilled in the art's research.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of fired brick and preparation method thereof, method provided by the invention
It uses titanium extraction tailings to prepare fired brick for raw material, realizes the reasonable utilization of titanium extraction tailings.
The present invention provides a kind of preparation methods of fired brick, comprising:
Titanium extraction tailings, shale and gangue are mixed, dry blend is obtained；
The dry blend and water are mixed, wet mixed feed is obtained；
By the wet mixed feed extrusion molding, adobe is obtained；
It will be roasted after the brick bat drying, obtain fired brick.
Found by the numerous studies of inventor, inside titanium extraction tailings containing 5~8% free carbon, calorific capacity reaches
100~300kJ/kg the characteristics of using titanium extraction tailings, by suitable raw material proportioning and technique, can prepare fired brick and build
Material product.The strength of sintered brick that the present invention is prepared reaches 10MPa or more, and water absorption rate is lower than 18%, bulk density 1.70g/
cm3Hereinafter, meeting relevant criterion MU10 class requirement.
In the present invention, the titanium extraction tailings are that titanium-containing blast furnace slag high temperature cabonization-low temperature chlorination mentions the by-product after titanium.?
In the present invention, the titanium extraction tailings are preferably fine-powdered titanium extraction tailings；The granularity of the titanium extraction tailings is preferably 80~400 mesh,
More preferably 100~350 mesh, more preferably 150~300 mesh, most preferably 200~250 mesh.In the present invention, described to mention titanium
Tailings is preferably titanium extraction tailings original slag.Present invention preferably employs the titanium extraction tailings of above-mentioned granularity, compared with common shale brick, this hair
The titanium extraction tailings granularity of bright use is thinner, and fired brick exterior appearance after molding is good.
In the present invention, the titanium extraction tailings preferably include:
Calcium oxide, silica, titanium dioxide, aluminum oxide, magnesia and free carbon.
In the present invention, mass content of the calcium oxide in titanium extraction tailings is preferably 25~30%, and more preferably 26
~29%, most preferably 27~28%.
In the present invention, mass content of the silica in titanium extraction tailings is preferably 20~25%, more preferably
21~24%, most preferably 22~23%.
In the present invention, mass content of the titanium dioxide in titanium extraction tailings is preferably 5~10%, and more preferably 6
~9%, most preferably 7~8%.
In the present invention, mass content of the aluminum oxide in titanium extraction tailings is preferably 10~20%, more preferably
It is 12~15%, most preferably 13~14%.
In the present invention, mass content of the magnesia in titanium extraction tailings is preferably 5~10%, more preferably 6~
9%, most preferably 7~8%.
In the present invention, mass content of the free carbon in titanium extraction tailings is preferably 3~8%, more preferably 4~
7%, most preferably 5~6%.
In the present invention, preferably also contain chloride ion in the titanium extraction tailings.In the present invention, the chloride ion is mentioning titanium
Mass content in tailings is preferably 2~4%, and more preferably 2.5~3.5%, most preferably 3%.
In the present invention, the titanium extraction tailings it is also preferable to include:
Manganese oxide, sulfur trioxide, titanium carbide, titanium nitride, fluoride and sulfide.
In the present invention, mass content of the manganese oxide in titanium extraction tailings is preferably 0.5~1%, and more preferably 0.6
~0.9%, most preferably 0.7~0.8%.
In the present invention, mass content of the sulfur trioxide in titanium extraction tailings is preferably 0.5~1.5%, more preferably
It is 0.8~1.2%, most preferably 1%.
In the present invention, mass content of the titanium carbide in titanium extraction tailings is preferably 2.5~3.5%, more preferably
2.8~3.2%, most preferably 3%.
In the present invention, mass content of the titanium nitride in titanium extraction tailings is preferably 0.5~1.5%, more preferably
0.8~1.2%, most preferably 1%.
In the present invention, mass content of the fluoride in titanium extraction tailings is preferably 0.3~0.7%, more preferably
0.4~0.6%, most preferably 0.5%.
In the present invention, mass content of the sulfide in titanium extraction tailings is preferably 0.2~0.6%, more preferably
0.3~0.5%, most preferably 0.4%.
In the present invention, the shale is preferably hard shale, and the shale resource of Panzhihua Region such as can be used.The present invention
It is preferred that being crushed to the shale, the granularity of shale is set to reach 1.0mm hereinafter, preferably 0.1~0.9mm, more preferably 0.2
~0.8mm, most preferably 0.3~0.6mm.In the present invention, the broken method is preferably roller pair breaking.The present invention is directed to
Fired brick is prepared by raw material of titanium extraction tailings, during the preparation process preferred addition shale, the present invention is during preparing fired brick
Using shale, it can make the fired brick being prepared that there is preferable mechanical property, water absorption rate and bulk density.
The present invention does not have special limitation to the type of the gangue and source, and Panzhihua Region coal mine pair such as can be used
The Coal Gangue Resource of production.In the present invention, the phosphorus content of the gangue is preferably 10~15%, and more preferably 11~14%,
Most preferably 12~13%；The calorific value of the gangue is preferably 500~700kJ/kg, more preferably 550~650kJ/kg,
Most preferably 580~620kJ/kg.The present invention is preferably crushed the gangue, its granularity is made to reach 1.0mm hereinafter, excellent
It is selected as 0.1~0.9mm, more preferably 0.2~0.8mm, most preferably 0.3~0.6mm.In the present invention, the broken side
Method is preferably roller pair breaking.
In the present invention, the mass ratio of the titanium extraction tailings, shale and gangue is preferably (10~25): (25~50):
(40~50), more preferably (15~20): (30~40): (42~48), most preferably (17~18): (34~36): (44~
46).The present invention is during preparing fired brick, it is preferred to use titanium extraction tailings, shale and the gangue preparation of above-mentioned usage ratio
Fired brick especially controls the usage ratio of titanium extraction tailings and shale, and the present invention passes through the usage ratio for rationally controlling each raw material,
It can make the fired brick being prepared that there is better mechanical property, water absorption rate and bulk density.
In the present invention, the mass content of moisture is preferably 10~15% in the wet mixed feed, and more preferably 11~14%,
Most preferably 12~13%.In the present invention, the dosage of the titanium extraction tailings preferably reaches the 40% of amount of shale, can consume
Titanium extraction tailings resource, and so that the free carbon in tailings is applied, while the titanium in tailings is conducive to improve the intensity of brick body.
In the present invention, described to obtain preferably carrying out ageing mixture after dry blend, the ageing mixture is to place after mixing dry blend
For a period of time, keep feedstock property more stable, mouldability is more preferable.In the present invention, the time of the ageing mixture is preferably 5~10 small
When, more preferably 6~9 hours, most preferably 7~8 hours.
In the present invention, extrusion forming is carried out after obtaining wet mixed feed, the shaping strength during the extrusion forming is preferred
It is 100~300 tons, more preferably 200~300 tons, optimal is 300 tons.
In the present invention, obtained adobe is cut after the extrusion forming, the cutting is preferably dimensioned to be mark
Brick size, the standard brick are preferably dimensioned to be 240 × 115 × 53mm.
In the present invention, it obtains after adobe preferably setting the adobe stacking is naturally cool.In the present invention, described naturally cool
The time set is preferably 5~10 hours, more preferably 6~9 hours, most preferably 7~8 hours.
In the present invention, the temperature of the drying is preferably 100~200 DEG C, and more preferably 120~180 DEG C, most preferably
140~160 DEG C；The time of the drying is preferably 5~15 hours, more preferably 8~12 hours, most preferably 10 hours.
In the present invention, described to be roasted to internal combustion roasting, i.e., carbonaceous material such as gangue, coal slime etc. is mixed into adobe,
It is ignited by outside technique of igniting, once sintered molding, the temperature of the roasting is preferably 1000~1050 DEG C, more preferably
1010~1040 DEG C, most preferably 1020~1030 DEG C；The time of the roasting is preferably 3~5 hours, more preferably 3.5~
4.5 hours, most preferably 4 hours.
In the present invention, natural cooling preferably after kiln discharge after the completion of the roasting, obtains fired brick.
The present invention provides a kind of using titanium extraction tailings as the fired brick of primary raw material, and the titanium extraction tailings are that blast furnace slag mentions titanium
Tailings afterwards, for titanium extraction tailings using former slag, shale is used as plastic material, and gangue is used as internal combustion agent, and dry-mixed uniform ageing mixture 5 afterwards~
10 hours, add water 10~15%, stir evenly, using extrusion under vacuum technique extrusion molding, stacking after tile cutter is natural
It is cool to set 5~10 hours, it is then 5~15 hours dry under conditions of 100~200 DEG C, using interior combustion process in 1000~1050
It is roasted 3~5 hours at DEG C, natural cooling after kiln discharge obtains titanium extraction tailings fired brick.
The method and process process provided in an embodiment of the present invention for preparing fired brick is as shown in Figure 1, comprising:
Shale is crushed, shale particle is obtained；
Gangue is crushed, gangue particle is obtained；
Will be dry-mixed after titanium extraction tailings, shale particle and gangue particle progress ingredient, obtain dry blend；
It will be added water and stirred after the dry blend ageing mixture, obtain wet mixed feed；
By the wet mixed feed extrusion molding, adobe is obtained；
The adobe is cut, stacking, it is cool set, dry, roast and cool down, obtain fired brick.
The preparation method of fired brick provided by the invention is more preferably:
After the gangue of the shale of titanium extraction tailings original slag, granularity less than 1mm and granularity less than 1mm is weighed with certain proportion
Dry-mixed uniformly ageing mixture 5~10 hours (is convenient for extrusion molding), and 10~15% water is then added and stirs evenly, using being squeezed into
Then type technique extrusion molding cuts (according to 240 × 115 × 53mm of standard brick size), will be naturally cool after obtained adobe stacking
It sets 5~10 hours；Then 5~15 hours dry under the conditions of 100~200 DEG C；Using interior combustion process at 1000~1050 DEG C
Roasting 3~5 hours, natural cooling after kiln discharge obtains titanium extraction tailings fired brick.
The present invention also provides the fired bricks that a kind of method described in above-mentioned technical proposal is prepared.In the present invention,
The preparation method of the fired brick is consistent with the preparation method of fired brick described in above-mentioned technical proposal, and details are not described herein.With it is existing
There is the sintering shale brick of technology to compare, the fired brick that method provided by the invention is prepared has an advantage that raw material sources
Extensively, cheap and easy to get；Simple production process, cost is relatively low, and green brick forming is good, and surface quality is good, easy-sintering, and intensity is high；Energy
The high-efficiency comprehensive utilization for realizing titanium extraction tailings resource meets the requirement of previous cycle economic policy.
It is sintered using the titanium extraction tailings fired brick presentation quality that method provided by the invention is prepared better than conventional shale
Brick, intensity reach 10MPa or more, and water absorption rate is lower than 18%, bulk density 1.70g/cm3Hereinafter, meeting relevant criterion MU10 etc.
Grade requires.
The present invention provides a kind of using titanium extraction tailings as the fired brick of primary raw material, and titanium extraction tailings used mention for blast furnace slag
Remaining tailings after titanium.The present invention is by titanium extraction tailings original slag 10~25%, shale 25~50%, gangue 40~50%, and three kinds
Raw material is dry-mixed ageing mixture 5~10 hours uniformly rear, adds water 10~15%, stirs evenly, is extruded into using extrusion under vacuum technique
Type, stacking after tile cutter is naturally cool to set 5~10 hours, then 5~15 hours dry under the conditions of 100~200 DEG C, uses
Interior combustion process roasts 3~5 hours at 1000~1050 DEG C, and titanium extraction tailings fired brick can be obtained in natural cooling after kiln discharge.
The a large amount of titanium extraction tailings of the annual by-product of titanium-containing blast furnace slag titanium extracting technology, comprehensive utilization difficulty are big, it is necessary to walk multipath
More Utilization Modes.The present invention is the important channel realizing titanium extraction tailings multipath and utilizing using titanium extraction tailings exploitation fired brick
One of, the preparation method of fired brick provided by the invention is promoted and applied, it is contemplated that titanium extraction tailings 500,000 can be consumed every year
Ton or more, generate 1,500,000 yuan of economic benefit or more.The preparation method of fired brick provided by the invention is sintered with traditional shale
Brick is compared, and has the characteristics that good good moldability, surface quality, easy-sintering, intensity are high, and the carbon in titanium extraction tailings of the present invention mentions
Part of heat energy has been supplied, the dosage of gangue is reduced, has reduced the overall cost of fired brick.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the process flow chart of fired brick preparation method provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The ingredient of titanium extraction tailings original slag used in following embodiment of the present invention includes:
Embodiment 1
The granularity of titanium extraction tailings, 50 parts by weight that 10 parts by weight are arrived is small less than the granularity of the shale of 1mm and 40 parts by weight
It is dry-mixed uniformly in the gangue of 1mm, 10 hours ageing mixtures are then carried out, dry blend is obtained；The dry blend and water stirring is mixed
It closes uniformly, obtains wet mixed feed, the biodiversity content in the wet mixed feed is 10.5%；Obtained wet mixed feed is used and is squeezed into
Type technique extrusion molding, the intensity of extrusion forming are 200 tons.
Obtained shaped article is cut (according to 240 × 115 × 53mm of standard brick size), adobe is obtained；By adobe
It is naturally cool after stacking to set 10 hours, it is then 10 hours dry under the conditions of 185 DEG C, it is roasted 3 hours at 1050 DEG C, after kiln discharge certainly
It is so cooling.Obtain fired brick.
The presentation quality of fired brick is prepared better than sintering shale brick in the prior art in the embodiment of the present invention 1.
It is formed refractory product cold crushing strength test method (GB/T5072.2-2004) using densification, the test present invention
The intensity for the fired brick that embodiment 1 is prepared, testing result are the intensity for the fired brick that the embodiment of the present invention 1 is prepared
For 12.5MPa.
Using densification be formed refractory product bulk density, apparent porosity, moisture content test method (GB/T2997-2004),
The water absorption rate of fired brick prepared by the embodiment of the present invention 1 is tested, testing result is the sintering that the embodiment of the present invention 1 is prepared
The water absorption rate of brick is 16.9%.
Using densification be formed refractory product bulk density, apparent porosity, moisture content test method (GB/T2997-2004),
The bulk density for the fired brick that the test embodiment of the present invention 1 is prepared, testing result is that the embodiment of the present invention 1 is prepared
Fired brick bulk density be 1.68g/cm3。
The fired brick that the embodiment of the present invention 1 is prepared meets MU10 class requirement.
Embodiment 2
The granularity of shale and 45 parts by weight by 25 parts by weight titanium extraction tailings, the granularity of 30 parts by weight less than 1mm is less than 1mm
Gangue it is dry-mixed uniformly, then carry out 5 hours ageing mixtures, obtain dry blend；The dry blend and water are uniformly mixed,
Wet mixed feed is obtained, the biodiversity content in the wet mixed feed is 13.5%；Obtained wet mixed feed is used into extrusion forming process
Extrusion molding, the intensity of extrusion forming are 300 tons.
Obtained shaped article is cut (according to 240 × 115 × 53mm of standard brick size), adobe is obtained；By adobe
It is naturally cool after stacking to set 5 hours, it is then 5 hours dry under the conditions of 110 DEG C, it is roasted 5 hours at 1010 DEG C, it is natural after kiln discharge
It is cooling.Obtain fired brick.
The presentation quality of fired brick is prepared better than sintering shale brick in the prior art in the embodiment of the present invention 2.
According to method described in embodiment 1, the intensity that detection obtains the fired brick of the preparation of the embodiment of the present invention 2 is
10.2MPa, water absorption rate 17.2%, bulk density 1.67g/cm3, fired brick that the embodiment of the present invention 2 is prepared meets
Standard MU10 class requirement.
Embodiment 3
The granularity of shale and 50 parts by weight by 15 parts by weight titanium extraction tailings, the granularity of 35 parts by weight less than 1mm is less than 1mm
Gangue it is dry-mixed uniformly, then carry out 8 hours ageing mixtures, obtain dry blend；The dry blend and water are uniformly mixed,
Wet mixed feed is obtained, the biodiversity content in the wet mixed feed is 14.8%；Obtained wet mixed feed is used into extrusion forming process
Extrusion molding, the intensity of extrusion forming are 100 tons.
Obtained shaped article is cut (according to 240 × 115 × 53mm of standard brick size), adobe is obtained；By adobe
It is naturally cool after stacking to set 8 hours, it is then 6 hours dry under the conditions of 150 DEG C, it is roasted 4 hours at 1050 DEG C, it is natural after kiln discharge
It is cooling.Obtain fired brick.
The presentation quality of fired brick is prepared better than sintering shale brick in the prior art in the embodiment of the present invention 3.
According to method described in embodiment 1, the intensity that detection obtains the fired brick of the preparation of the embodiment of the present invention 3 is
11.5MPa, water absorption rate 15.9%, bulk density 1.67g/cm3, fired brick that the embodiment of the present invention 3 is prepared meets
Standard MU10 class requirement.
As seen from the above embodiment, the present invention provides a kind of preparation methods of fired brick, comprising: by titanium extraction tailings, page
Rock and gangue mixing, obtain dry blend；The dry blend and water are mixed, wet mixed feed is obtained；The wet mixed feed is extruded into
Type obtains adobe；It will be roasted after the brick bat drying, obtain fired brick.Inside titanium extraction tailings containing 5~8% free carbon, hair
Calorific value has reached 100~300kJ/kg, the characteristics of using titanium extraction tailings, can prepare fired brick building material product.With existing skill
The sintering shale brick of art is compared, the fired brick that method provided by the invention is prepared have an advantage that raw material sources extensively,
It is cheap and easy to get；Simple production process, cost is relatively low, and green brick forming is good, and surface quality is good, easy-sintering, and intensity is high；It is able to achieve and mentions
The high-efficiency comprehensive utilization of titanium tailings resource meets the requirement of previous cycle economic policy.
Claims (10)
1. a kind of preparation method of fired brick, comprising:
Titanium extraction tailings, shale and gangue are mixed, dry blend is obtained；
The dry blend and water are mixed, wet mixed feed is obtained；
By the wet mixed feed extrusion molding, adobe is obtained；
It will be roasted after the brick bat drying, obtain fired brick.
2. the method according to claim 1, wherein the titanium extraction tailings include:
Calcium oxide, silica, titanium dioxide, aluminum oxide, magnesia and free carbon.
3. the method according to claim 1, wherein the granularity of the titanium extraction tailings is 80~400 mesh；
The granularity < 1mm of the shale；
The granularity < 1mm of the gangue.
4. the method according to claim 1, wherein the mass ratio of the titanium extraction tailings, shale and gangue is
(10~25): (25~50): (40~50).
5. the method according to claim 1, wherein after obtaining dry blend further include:
The dry blend is subjected to ageing mixture, the time of the ageing mixture is 5~10 hours.
6. the method according to claim 1, wherein shaping strength during the extrusion forming be 100~
300 tons.
7. the method according to claim 1, wherein after obtaining adobe further include:
The adobe carries out to nature is cool sets, the naturally cool time set is 5~10 hours.
8. the method according to claim 1, wherein the temperature of the drying is 100~200 DEG C；
The time of the drying is 5~15 hours.
9. the method according to claim 1, wherein the temperature of the roasting is 1000~1050 DEG C；
The time of the roasting is 3~5 hours.
10. a kind of fired brick that method described in claim 1 is prepared.
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Cited By (1)
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| CN115925387A (en) * | 2022-10-29 | 2023-04-07 | 宜宾天原科创设计有限公司 | Method for making bricks by using titanium dioxide neutralized slag |
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