CN105174765A - Method for preparing construction sand and active slag powder through water-quenched vanadium-titanium slag - Google Patents
Method for preparing construction sand and active slag powder through water-quenched vanadium-titanium slag Download PDFInfo
- Publication number
- CN105174765A CN105174765A CN201510602408.0A CN201510602408A CN105174765A CN 105174765 A CN105174765 A CN 105174765A CN 201510602408 A CN201510602408 A CN 201510602408A CN 105174765 A CN105174765 A CN 105174765A
- Authority
- CN
- China
- Prior art keywords
- slag
- sand
- shrend
- schreyerite
- powder
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for preparing construction sand and active slag powder through water-quenched vanadium-titanium slag. The method comprises the following steps that 1, water-quenched vanadium-titanium slag particles are shaped and modified; 2, sand and powder slag are separated, wherein a mixture containing thick and hard particles and powder slag is separated into sand with the grain diameter larger than or equal to 0.15 mm and the powder slag with the grain diameter being smaller than 0.15 mm, and the obtained sand with the grain diameter being larger than or equal to 0.15 mm is construction sand; 3, active slag powder is prepared, wherein 50-90% of the obtained powder slag with the grain diameter being smaller than 0.15 mm, 10-50% of auxiliaries and 0.05-3% of an activation grinding aid are mixed by mass and ground to form fine powder with the diameter being 80 micrometers and the screen residue smaller than or equal to 12%, and therefore the active slag powder is obtained. By means of the method, components of different characteristics in the water-quenched vanadium-titanium slag can be sufficiently utilized in a recycling mode, the high-quality construction sand and active slag powder are produced for a concrete mixing plant and civil mortar and cement manufacturing enterprises, and the economical efficiency is good.
Description
Technical field
The present invention relates to a kind of method that shrend schreyerite slag produces construction sand and active ground-slag.
Background technology
The molten blast furnace slag produced during smelting vanadium-titanium magnetite by blast furnace is referred to as schreyerite slag, and outward appearance is generally brown, density 3.24g/cm
3, radioactive indicator Ira0.1 ~ 0.2 inside and outside schreyerite slag, Ir0.08 ~ 0.12, far below the Ira1.0 of national Specification, Ir1.0, unrestricted under any envrionment conditions can be used in.
Schreyerite slag divides shrend chilling and natural slow cooling 2 kinds of slags, is low calcium Ti-enriched slag, and the mineral group such as silicon, aluminium, iron, calcium, magnesium of its slagging is by avidity is strong and strong TiO is inclined in crystallization
2impact, pole is difficult to generate Dicalcium Phosphate (Feed Grade), calcium aluminate compound of hydraulic mineral, and no matter be different from ordinary blast water-granulated slag completely, be shrend chilling or natural slow cooling, and its mineral facies formed are substantially identical, and its main petrofacies mineral are uhligite (CaOTiO
2), diopside (MgOCaO2SiO
2) or titanaugite (MgOCaO2TiO
2), spinel (MgOAl
2o
3), Ba Yishi and a small amount of titanium nitride, titanium carbide, titanium carbonitride Solid solution and phanerocrystalline-adiagnostic etc., not containing mica, clay mineral that natural mountain sand, river sand often have.Chemical Composition (%) fluctuation is at TiO
211.8 ~ 24.5, CaO19.6 ~ 30, SiO
218.6 ~ 25, Al
2o
310.5 ~ 16.5, MgO3.5 ~ 8.5, MnO0.5 ~ 1.0, FeO0.9 ~ 2.0, S0.12 ~ 0.8, V
2o
50.12 ~ 0.55.Just because of its titanium content is higher, on the one hand, vanadium titanium water-granulated slag can not be simple for the production of slag cement as ordinary blast slag, a large amount of analysis of experiments display: even if with the vanadium titanium water-granulated slag of superfine pulverizing and the composite gelled material of silicate cement, it is agglutinate hardenite short texture under normal temperature curing condition, its hydrated product mainly hydrated cementitious provides, schreyerite solid impurity particle surface is not substantially by " erosion ", the active pole of schreyerite slag is difficult to eject, only under the high-temperature steam curing condition of exciting agent existence, schreyerite solid impurity particle surface is except having single sulfur type hydrated calcium aluminate sulfate of hydrolysis product of cement CSH gel and sheet, just there is significantly " erosion " phenomenon.On the other hand, the titanium grade again because of schreyerite slag is not high enough, is also difficult to the economic raw material being used as Ti industry.
Molten blast furnace slag in atmosphere a kind of of naturally cooling formation is main stone material by the mineral such as titanaugite, uhligite, in compact mass structure, usually referred to as high-titanium dry slag, have the features such as porous, high-strength, chemical stability is good, alternative building stones are used as aggregate.High-titanium dry slag China accumulating amount over the years reaches several hundred million ton, takes up an area tens thousand of mu, has greater environmental impacts.Current, Ma Gang, Anshan iron and steel plant, Wuhan Iron and Steel Plant, climb steel etc. by machined for vanadium titanium dry slag graded crushing, dry slag rubble is made in sorting and a small amount of slag sand is used for engineering concrete building stones and sand material, heavy Titanium slag stone coarse aggregate (building stones) particle diameter obtained by it is generally the continuous grading of 5 ~ 40mm, apparent density 2.65 ~ 2.85g/cm
3, tap density 1320 ~ 1470kg/m
3, obtained heavy Titanium slag stone fine aggregate (sand material) powder containing quantity 9 ~ 15%, fineness modulus 2.8 ~ 3.4, apparent density 3.09 ~ 3.19g/cm
3, tap density 1590 ~ 1780kg/m
3, heavy Titanium slag sand material cost is higher.
It is main porous light slag that molten blast furnace slag directly can form spongiform foam grain slag with shrend chilling in (1510 ~ 1630 DEG C), in (1350 ~ 1450 DEG C) with can forming section hard particles shape resistant mineral and pars shape foamy slag during shrend chilling, be called for short shrend schreyerite slag.The granulation schreyerite slag of shrend is vesicular structure, and its surface irregularity, corner angle are neat, intensity is lower, but the stable phase mineral grains such as its perovskite are hard, difficult mill.Its grade partially thinner than natural medium coarse sand (partially between fine sand, being equivalent to nature medium sand), median size is at 2.53 ~ 3.55mm, and maximum particle diameter is generally at about 5mm, and particle diameter generally reaches 15 ~ 48% at the grain slag powder of below 0.15mm and tender froth particle.The constructional feature of the uneven surface that this corner angle of shrend schreyerite slag sand are neat and porous containing a considerable amount of grain slag micro mist and tender froth slag feature, makes it have to be different from as follows the characteristic of normal concrete tradition fine aggregate (artificial stone sand and natural siliceous sand):
1) mineral composition of shrend schreyerite slag sand material is relatively stable phase minerals calcium titanium ore, titanaugite etc., and natural sand is the silicon-dioxide of compact crystallization.Different mineral compositions determines dissimilar material behavior, and dissimilar sand all has considerable influence to concrete original operating state and mechanical property.
2) shrend schreyerite slag sand material has the vesicular structure of coarse angular surface, and water regain is large, air content is also large.If be directly used in normal concrete, need increase the water consumption of concrete proportioning on the one hand, also need the actual amount increasing concrete admixture, this brings many puzzlements and inconvenience to the construction of the batching of normal concrete; On the other hand, porous causes containing a certain amount of air in hole, and coarse surface adds again the denseness of slurry relatively, is unfavorable for the migration of inside concrete bubble to surface, causes the air content of water-granulated slag sand concrete more common natural sand concrete high.
3) shrend schreyerite slag sand material contains grain slag micro mist and the tender froth slag of a great deal of, objectively make shrend schreyerite slag sand only can be used for the concrete of below C20 label, conventional C30, C40 and high-grade concrete are then needed increase cement consumption and increase concrete admixture consumption, and need swelling agent be used, low grade poor concrete is also needed to increase cement consumption, and early strength can be reduced, extends the concrete setting and harden time.
4) mineral of shrend schreyerite slag sand material are than great, and unit weight is light, and its proportion is at 2380 ~ 2880Kg/m
3, general dry closely knit unit weight is only 650 ~ 900Kg/m
3, loose dry specific gravity is 580 ~ 800Kg/m
3, voidage 58 ~ 78%.And natural sand proportion is at 2600 ~ 2800Kg/m
3, loose dry specific gravity is at 1450 ~ 1650Kg/m
3, voidage < 45%.The change of shrend schreyerite slag its unit weight of sand and voidage is all much bigger than natural sand, and this brings suitable trouble and certain risk to the mix designs of normal concrete and engineer applied.The concrete mix unit weight of its preparation is also light, lighter by 15 ~ 25% than normal concrete mixture unit weight, even if mortar mixture unit weight (generally at 1080 ~ 1550Kg/m3) is also light by 28 ~ 45% than ordinary mortar mixture unit weight.
5) structure of shrend schreyerite slag sand material porous and the foamy slag material characteristics containing part weakness, make the axial tensile strength of its concrete sensitivity, folding strength and pressure-proof elasticity modulus lower than 5 ~ 20% of the normal concrete of same label, especially its pressure-proof elasticity modulus is lower than existing " reinforced concrete structural design specification " (GB50010-2010) requirement.
These geneogenous characteristic defectives above-mentioned are just because of a large amount of foamy slag of association when shrend schreyerite slag is formed, the complete corner angle of granulated slag and particulate material cause totally unfavorable impact to concrete application property and concrete physical and mechanical property, the recycling of the shrend schreyerite slag sand shape material of this mineral facies quite stable is made to be subject to the suppression of essence, except the heavy Titanium slag sand of fine and close high rigidity, outside the application of stone, ignore a large amount of pilot study achievement of these congenital characteristic defectives, especially still can only rest in the qualification achievement of paper or various kinds by the long-term achievement in research that shrend schreyerite slag substitutes concrete and mortar natural sand.Objectively, pile up the shrend schreyerite slag having ten million ton to count in 50 kilometer range of the large blast furnace enterprise periphery of each smelting vanadium titano-magnetite, very important pollution is caused to environment.
On the other hand, recent decades large-scale fundamental construction Sand for Concrete, cause the high-quality natural sand resource in China's major part region to be close to exhaust, and huge destruction is caused to environment, the mountain sand that existing subregion extensively adopts silt content high as Yunnan, the extra large sand that coastal extensive employing saltiness is high, the cancer engineering causing the concrete works of many huge investments to become life cycle significantly to shorten.
Therefore, utilize based on the shrend schreyerite slag of the mineral such as the perovskite of the good inertia of chemical stability in the urgent need to a kind of resourcebility and the novel method of nature sand resource can be saved.
Summary of the invention
Technical problem to be solved by this invention is, a kind of shrend schreyerite slag is provided to produce the method for construction sand and active ground-slag, to solve tender froth slag and granulated slag in congenital characteristic defective and comprehensive utilization shrend schreyerite slag that the foamy slag of weak structure in shrend schreyerite slag and granulated slag and the complete corner angle of hard particles cause jointly.
The technical solution adopted for the present invention to solve the technical problems is: the method producing construction sand and active ground-slag with shrend schreyerite slag, comprises the following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: to grind or to clash into or spreading mode is pulverized the tender froth slag in shrend schreyerite slag and eliminates the part sharp corners of hard particles, makes the mixture containing thicker hard particles material and granulated slag by shrend schreyerite slag;
(2) being separated of sand and granulated slag: be the granulated slag that the sand material of particle diameter >=0.15mm and particle diameter are less than 0.15mm by the mixture separation containing thicker hard particles material and granulated slag of step (1) gained;
The sand material of gained particle diameter >=0.15mm is construction sand, and alternative natural sand is used for normal concrete, also can be used as lightweight sand for lightweight aggregate concrete;
(3) preparation of active ground-slag: the granulated slag and auxiliary material, the activated grinding aids that the particle diameter of step (2) gained are less than 0.15mm are granulated slag 50 ~ 90% in mass ratio: auxiliary material 10 ~ 50%: the ratio of activated grinding aids 0.05 ~ 3% is prepared burden, three's quality proportioning sum is 100%, combined grinding to 80 μm tails over≤fine powder of 12%, obtain active ground-slag.
Further, in step (1), slightly grinding tender froth slag wherein and grinding away the part sharp corners of hard particles with bead or forging in the ball mill (i.e. short mill or ultrashort mill) that described lapping mode refers to shrend schreyerite slag to send into continuously length-to-diameter ratio < 2.5.
Further, in step (1), described shock mode refers to shrend schreyerite slag to spurt in volute or is placed in star stirrer or is placed in conical agitator or is placed in the agitator of belt grinding body, utilizes the mutual shock between the shock of shrend schreyerite slag and antifriction metal (AFM) inwall and friction and shrend schreyerite solid impurity particle and frictional force pulverize tender froth slag wherein and eliminate the sharp corners of part hard particles.
Further, in step (1), described spreading mode refers to adopt little pressure wheel to roll over mixing equipment spreading shrend schreyerite slag, pulverizes tender froth slag wherein and eliminate the sharp corners of part hard particles with the frictional force between the slight spreading of rolling wheel and shrend schreyerite solid impurity particle.
Further, in step (2), described separation finger Bian Powder selecting mechanism sorting or adopt vibratory screening apparatus or trommel screen screening.
Further, in step (3), described auxiliary material refers to slag, silicon ash, diatomite, belite-anhydrite matured slag, belite-sulplo-aluminate matured slag, aluminate clinker, sulfoaluminate clinker and is at least one in main material etc. containing calcium aluminate or calcium sulfoaluminate minerals.
Further, in step (3), described activated grinding aids is the commercially available activated grinding aids containing hydramine etc.
Further, in step (1), add granule modified dose that accounts for shrend schreyerite slag mass ratio 0.03 ~ 3%.Granule modified dose of described finger can improve the material of hard particles thing surface property and/or structural performance in shrend schreyerite slag, one or more in preferred hydramine, silane, water glass, sodium aluminate solution etc.
Know-why of the present invention:
For the schreyerite slag of shrend chilling objectively by hard particulate state resistant mineral, the mixture of spongy foam slag and granulated slag composition, and slag particle is vesicular structure, surface irregularity, corner angle are neat and bulk strength is lower, but the stable phase mineral grains such as its perovskite are hard, the feature of difficult mill, adopt grinding or to clash into or spreading mode pulverizes tender froth slag in shrend schreyerite slag, and eliminate the part sharp corners of hard particles, the granulated slag making foamy slag and sharp corners and primary granulated slag be converted into particle diameter to be less than 0.15mm, then, remove granulated slag, shrend schreyerite slag shaping modification is made the thicker hard particles sand material being convenient to the cleaning of preparing normal concrete or mortar, thus a large amount of foamy slag dissolved because of association, the disadvantageous effect that the complete corner angle of primary granulated slag and particle cause concrete application property and concrete physical and mechanical property, and make active ground-slag at the granulated slag of below 0.15mm containing a certain amount of vitreum active mineral for main with the particle diameter of the phase commute be separated mill, reach the object of recycling shrend schreyerite slag.
Beneficial effect of the present invention:
1) method is simple, and power consumption of polymer processing is low, and tooling cost is lower.
2) resourcebility makes full use of the component of the different qualities in shrend schreyerite slag, production high-quality construction sand and active ground-slag supply concrete mixing plant and civilian mortar and cement manufacturers, good economy performance.
3) be beneficial to and alleviate environmental pollution, and reduce and open Bian natural sand resource to the destruction of environment.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
In following examples, the physical and mechanical property of shrend schreyerite slag modification sand detects according to " regular concrete sand quality standard and the method for inspection " (JGJ52-2006) and " construction sand " (GB/T14684-93);
Concrete initialization performance: the test of the concrete mix slump, divergence is according to " Standard for test methods of properties of ordinary concrete mixture standard " (GB/T50080-2002);
Concrete general physics mechanics performance (intensity, Young's modulus) test is according to " normal concrete mechanical test method " (GB/T50081-2002);
Concrete is tested according to " Standard for test methods of longterm performance and durability of ordinary concrete " (GB/T50082-2009) from volume shrinkage strain (limited expansion rate, degree of free swelling, Creep Coefficient);
Compressive elastic modulus of concrete test is according to " reinforced concrete structural design specification " (GB50010-2010);
Active ground-slag detects according to " GBFS in cement and concrete " (GB/T18046-2008), " steel-making slag powder in cement and concrete " (GB/T20491-2006).
embodiment 1
Get the shrend schreyerite slag that seasoning is for many years displayed in certain slag field, gully, produce construction sand and active ground-slag with following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: slightly grinding tender froth slag wherein and grinding away the part sharp corners of hard particles with small ball in ultrashort mill shrend schreyerite slag being sent into continuously Φ 2.8x3.8m, makes the mixture containing thicker hard particles material and granulated slag;
(2) being separated of sand and granulated slag: the granulated slag being adopted by the mixture containing thicker hard particles material and granulated slag of step (1) gained bolting to be separated into the sand material of particle diameter >=0.15mm and particle diameter to be less than 0.15mm;
The sand material of gained particle diameter >=0.15mm is construction sand, can be used for concrete or mortar;
(3) preparation of active ground-slag:
Select commercially available calcium sulphoaluminate grog and silicon ash as auxiliary material, select the ZC type activated grinding aids of commercially available Zi Chen company, the granulated slag and auxiliary material, the activated grinding aids that the particle diameter of step (2) gained are less than 0.15mm are granulated slag 89% in mass ratio: auxiliary material (sulfoaluminate clinker 7%+ silicon ash 3.9%) 10.9%: the ratio of activated grinding aids 0.1% is prepared burden, combined grinding to 80 μm tails over the fine powder of 8%, obtains active ground-slag.
Obtained by the present embodiment, the particle diameter of schreyerite slag modification sand is the continuous grading of 0.15 ~ 4.1mm, powder containing quantity 0.9%, and not containing the objectionable impurities such as mica, mud class, fineness modulus 2.7, is mostly quasi-circular hard particles, and there is minute aperture on surface, and proportion is 3023Kg/m
3, dry closely knit unit weight is 1269Kg/m
3, loose dry specific gravity is 1197Kg/m
3, voidage 38%, the metabisulfite solution sense weight loss 5.2% of modification sand soundness, sand material medium sulphide content and sulphate content press SO
3count 0.72%.The schreyerite slag modification sand equal-volume existed on wetland face with this heap substitute fineness modulus be 2.65 the preparation of river sand C30, C40, C50 concrete test, comparatively river sand concrete is good for the workability of modification sand concrete, do not emanate, not bleeding, the slump, divergence and river sand concrete are suitable; Cubes unit weight comparatively river sand concrete unit weight is light by 4.7%, 7d, 28d modification compression strength of sand concrete comparatively river sand concrete mean compressive strength improves 5.7%, 8.4% respectively, 28d pressure-proof elasticity modulus is suitable, folding strength and axial tensile strength suitable, limited expansion rate, the degree of free swelling in 1d, 3d, 7d, 14d, 28d, 60d length of time are suitable, the Creep Coefficient of corresponding modification in length of time sand concrete comparatively river sand concrete on average reduces by 27%, with reinforcing bar cohesive force comparatively river sand concrete on average improve 27.1%.Test-results shows, the main physico-mechanical performance of schreyerite slag modification sand concrete reaches or is better than river sand concrete, and schreyerite slag modification sand use properties is better than common river sand, and modification sand can meet the requirement as construction sand completely.
Supply certain civil engineering with this modification schreyerite slag sand to build a house, user feedback has good workability, not running pulp not bleeding, and intensity is good.
The active ground-slag of gained after testing water demand ratio is 101%, reaches S75 grade slag powder strength criterion, S95 level steel-making slag powder strength criterion respectively.Supply certain grinding to stand erectly to connect to mix and join 42.5 class g cements, the quality testing index of user feedback cement is normal.
embodiment 2
Get the shrend schreyerite slag of certain slag field seasoning, produce construction sand and active ground-slag with following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: shrend schreyerite slag is sent in the short mill of Φ 3.8x4.2m continuously, simultaneously, add the sodium aluminate solution of hydramine and 0.45% accounting for shrend schreyerite slag amount 0.05% continuously as particle shaping properties-correcting agent, slightly grinding tender froth slag wherein and grinding away the part sharp corners of hard particles with small ball in short mill, makes the mixture containing thicker hard particles material and granulated slag;
(2) being separated of sand and granulated slag: the granulated slag being adopted by the mixture containing thicker hard particles material and granulated slag of step (1) gained powder separating machine to be separated into the sand material of particle diameter >=0.15mm and particle diameter to be less than 0.15mm;
The sand material of gained particle diameter >=0.15mm is construction sand;
(3) preparation of active ground-slag:
Select commercially available calcium sulphoaluminate grog and slag as auxiliary material, select the ZC type activated grinding aids of commercially available Zi Chen company, the granulated slag and auxiliary material, the activated grinding aids that the particle diameter of step (2) gained are less than 0.15mm are granulated slag 70% in mass ratio: auxiliary material (sulfoaluminate clinker 8%+ slag 21%) 29%: the ratio of activated grinding aids 1% is prepared burden, combined grinding to 80 μm tails over the fine powder of 3%, obtains active ground-slag.
Obtained by the present embodiment, the particle diameter of schreyerite slag modification sand is the continuous grading of 0.15 ~ 3.8mm, powder containing quantity 3.2%, and not containing the objectionable impurities such as mica, mud class, fineness modulus 2.42, is mostly quasi-circular hard particles, and there is minute aperture on surface, and proportion is 3109Kg/m
3, dry closely knit unit weight is 1363Kg/m
3, loose dry specific gravity is 1287Kg/m
3, voidage 35%, the metabisulfite solution sense weight loss 3.7% of modification sand soundness, sand material medium sulphide content and sulphate content press SO
3count 0.68%.The schreyerite slag modification sand equal-volume existed on wetland face with this heap substitute fineness modulus be 2.51 the preparation of river sand C20, C30, C40, C50 concrete test, comparatively river sand concrete is good for the workability of modification sand concrete, do not emanate, not bleeding, the slump, divergence and river sand concrete are suitable; Cubes unit weight comparatively river sand concrete unit weight is light by 4.1%, 7d, 28d modification compression strength of sand concrete comparatively river sand concrete mean compressive strength improves 7.3%, 9.6% respectively, 28d pressure-proof elasticity modulus comparatively river sand concrete on average improves 11.1%, axial tensile strength is suitable, limited expansion rate, the degree of free swelling in 1d, 3d, 7d, 14d, 28d, 60d length of time are suitable, the Creep Coefficient of corresponding modification in length of time sand concrete comparatively river sand concrete on average reduces by 27%, with reinforcing bar cohesive force comparatively river sand concrete on average improve 30.1%.Test-results shows, the main physico-mechanical performance of schreyerite slag modification sand concrete reaches or is better than river sand concrete, and schreyerite slag modification sand use properties is better than common river sand.
With this modification schreyerite slag sand supplied goods concrete mixing plant, user feedback workability is good, and not running pulp not bleeding, intensity is good.
The active ground-slag of gained after testing water demand ratio is 99%, reaches S75 grade slag powder strength criterion and S95 level steel-making slag powder strength criterion respectively.Supply certain Of Concrete Mixing Station as active ground-slag, feedback is suitable with commercially available common shrend slag powders result of use.
embodiment 3
Get the shrend schreyerite slag that certain steel mill is fresh, produce construction sand and active ground-slag with following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: shrend schreyerite slag is sprayed in Scroll container at a high speed with sandblast machine, pulverize the tender froth slag in shrend schreyerite slag through ten circulation sandblastings with the shock of the mode of shock and frictional force and dispose the part sharp corners of hard particles, making the mixture containing thicker hard particles material and granulated slag;
(2) being separated of sand and granulated slag: the granulated slag being adopted by the mixture containing thicker hard particles material and granulated slag of step (1) gained bolting to be separated into the sand material of particle diameter >=0.15mm and particle diameter to be less than 0.15mm;
The sand material of gained particle diameter >=0.15mm is construction sand;
(3) preparation of active ground-slag:
Select commercially available aluminate clinker and diatomite as auxiliary material, select the ZC type activated grinding aids of commercially available Zi Chen company, after the particle diameter of step (2) gained being less than the granulated slag drying of 0.15mm, it is dry powder slag 52% in mass ratio with auxiliary material, activated grinding aids: auxiliary material (aluminate clinker 8%+ diatomite 37%) 45%: the ratio of activated grinding aids 3% is prepared burden, combined grinding to 80 μm tail over be 2% fine powder, obtain active ground-slag.
Obtained by the present embodiment, the particle diameter of schreyerite slag modification sand is the continuous grading of 0.15 ~ 4.0mm, powder containing quantity 2.1%, and not containing the objectionable impurities such as mica, mud class, fineness modulus 2.23, is mostly irregular hard particles, and there is minute aperture on surface, and proportion is 2972Kg/m
3, dry closely knit unit weight is 1214Kg/m
3, loose dry specific gravity is 1071Kg/m
3, voidage 43.9%, the metabisulfite solution sense weight loss 6.1% of modification sand soundness, sand material medium sulphide content and sulphate content press SO
3count 0.83%.The schreyerite slag modification sand equal-volume existed on wetland face with this heap substitute fineness modulus be 2.32 the preparation of river sand C20, C30, C40 concrete test, comparatively river sand concrete is good for the workability of modification sand concrete, do not emanate, not bleeding, the slump, divergence and river sand concrete are suitable; Cubes unit weight comparatively river sand concrete unit weight is on average light by 6.9%, comparatively river sand concrete ultimate compression strength is suitable for 7d, 28d modification compression strength of sand concrete, 28d pressure-proof elasticity modulus comparatively river sand concrete on average improves 7.6%, axial tensile strength is suitable, limited expansion rate, the degree of free swelling in 1d, 3d, 7d, 14d, 28d, 60d length of time are suitable, the Creep Coefficient of corresponding modification in length of time sand concrete on average reduces by 21%, with reinforcing bar cohesive force comparatively river sand concrete on average improve 19.7%.Test-results shows, the main physico-mechanical performance of schreyerite slag modification sand concrete reaches or is better than river sand concrete, and schreyerite slag modification sand use properties and common river sand facies are worked as, and can be used as high-quality construction sand.
The active ground-slag of gained after testing water demand ratio is 102%, reaches S75 grade slag powder strength criterion.Try out in products factory for cement brick processed, user feedback workability good water-retaining property, does not ftracture, and intensity is good.
embodiment 4
Get the shrend schreyerite slag of the seasoning that certain slag field, gully is displayed, produce construction sand material and active ground-slag with following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: shrend schreyerite slag is placed in duplex conical agitator, first drip the silane accounting for shrend schreyerite slag mass ratio 0.03% simultaneously, drip the sodium aluminate solution accounting for shrend schreyerite slag mass ratio 0.5% again, pulverize tender froth slag wherein with the frictional force between slag and grind away the part sharp corners of hard particles, making the mixture containing thicker hard particles material and granulated slag;
(2) being separated of sand and granulated slag: the granulated slag being adopted by the mixture containing thicker hard particles material and granulated slag of step (1) gained bolting to be separated into the sand material of particle diameter >=0.15mm and particle diameter to be less than 0.15mm;
The sand material of gained particle diameter >=0.15mm is construction sand;
(3) preparation of active ground-slag:
Select commercially available belite-calcium sulphoaluminate grog and silicon ash as auxiliary material, select the ZC type activated grinding aids of commercially available Zi Chen company, the granulated slag and auxiliary material, the activated grinding aids that the particle diameter of step (2) gained are less than 0.15mm are granulated slag 65% in mass ratio: auxiliary material (belite-calcium sulphoaluminate grog 25%+ silicon ash 9.9%) 34.9%: the ratio of activated grinding aids 0.1% is prepared burden, combined grinding to 80 μm tails over the fine powder of 5%, obtains active ground-slag.
Obtained by the present embodiment, the particle diameter of schreyerite slag modification sand is the continuous grading of 0.15 ~ 3.6mm, powder containing quantity 0.6%, and not containing the objectionable impurities such as mica, mud class, fineness modulus 2.21, is mostly circular hard particles, and there is minute aperture on surface, and proportion is 3112Kg/m
3, dry closely knit unit weight is 1573Kg/m
3, loose dry specific gravity is 1438Kg/m
3, voidage 27%, the metabisulfite solution sense weight loss 0.3% of modification sand soundness, sand material medium sulphide content and sulphate content press SO
3count 0.67%.The schreyerite slag modification sand equal-volume existed on wetland face with this heap substitute fineness modulus be 2.32 the preparation of river sand C30, C40, C50, C60 concrete test, comparatively river sand concrete is good for the workability of modification sand concrete, do not emanate, not bleeding, the slump, divergence comparatively river sand concrete improve 21 ~ 26%, 28 ~ 34% respectively; Cubes unit weight comparatively river sand concrete unit weight on average improves 2.7%, 7d, 28d modification compression strength of sand concrete comparatively river sand concrete ultimate compression strength improves 5 ~ 12%, 10 ~ 19% respectively, 28d pressure-proof elasticity modulus improves 11 ~ 17%, axial tensile strength is suitable, limited expansion rate, the degree of free swelling in 1d, 3d, 7d, 14d, 28d, 60d length of time are suitable, the Creep Coefficient of corresponding modification in length of time sand concrete reduces by 28 ~ 37%, with reinforcing bar cohesive force comparatively river sand concrete on average improve 27.9%.Test-results shows, the main physico-mechanical performance of this schreyerite slag modification sand concrete is better than river sand concrete, and this schreyerite slag modification sand use properties is better than common river sand.
Modification schreyerite slag sand test preparation mortar is used for covil construction, and feedback workability is good, and do not ftracture, intensity is good.
The active ground-slag of gained after testing water demand ratio is 101%, reaches S95 grade slag powder strength criterion.
embodiment 5
Get the shrend schreyerite slag of the seasoning in certain enterprise stockyard, produce construction sand and active ground-slag with following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: shrend schreyerite slag is placed in wheel rolling formula roll mixer, frictional force between the slight spreading power repeatedly utilizing rolling wheel and slag is pulverized tender froth slag wherein and grinds away the part sharp corners of hard particles, makes the mixture containing thicker hard particles material and granulated slag;
(2) being separated of sand and granulated slag: the granulated slag being adopted by the mixture containing thicker hard particles material and granulated slag of step (1) gained bolting to be separated into the sand material of particle diameter >=0.15mm and particle diameter to be less than 0.15mm;
The sand material of gained particle diameter >=0.15mm is construction sand;
(3) preparation of active ground-slag:
Select belite-anhydrite matured slag and slag as auxiliary material, select the ZC type activated grinding aids of commercially available Zi Chen company, the granulated slag and auxiliary material, the activated grinding aids that the particle diameter of step (2) gained are less than 0.15mm are granulated slag 70% in mass ratio: auxiliary material (belite-anhydrite matured slag 20%+ slag 9.9%) 29.9%: the ratio of activated grinding aids 0.1% is prepared burden, combined grinding to 80 μm tails over the fine powder of 6%, obtains active ground-slag.
Obtained by the present embodiment, the particle diameter of schreyerite slag modification sand is the continuous grading of 0.15 ~ 3.5mm, powder containing quantity 2.2%, and not containing the objectionable impurities such as mica, mud class, fineness modulus 2.0, is mostly irregular hard particles, and there is minute aperture on surface, and proportion is 3016Kg/m
3, dry closely knit unit weight is 1279Kg/m
3, loose dry specific gravity is 1207Kg/m
3, voidage 40%, the metabisulfite solution sense weight loss 5.0% of modification sand soundness, sand material medium sulphide content and sulphate content press SO
3count 0.47%.The schreyerite slag modification sand equal-volume existed on wetland face with this heap substitute fineness modulus be 2.65 the preparation of river sand C20, C30, C40, C50 concrete test, comparatively river sand concrete is good for the workability of modification sand concrete, do not emanate, not bleeding, the slump, divergence and river sand concrete are suitable; Cubes unit weight comparatively river sand concrete unit weight is on average light by 4.9%, 7d, 28d modification compression strength of sand concrete is suitable with river sand concrete ultimate compression strength, 28d pressure-proof elasticity modulus is suitable, axial tensile strength is suitable, limited expansion rate, the degree of free swelling in 1d, 3d, 7d, 14d, 28d, 60d length of time are suitable, the Creep Coefficient of corresponding modification in length of time sand concrete reduces by 12 ~ 21%, with reinforcing bar cohesive force comparatively river sand concrete on average improve 16.4%.Test-results shows, the main physico-mechanical performance of schreyerite slag modification sand concrete reaches river sand concrete index, and schreyerite slag modification sand use properties and common river sand facies are worked as.
Build a house with this modification schreyerite slag sand engineering for civilian use, user feedback has good workability, not running pulp not bleeding, and intensity is good.
The active ground-slag of gained after testing water demand ratio is 100%, reaches S75 grade slag powder strength criterion.
Claims (9)
1. produce the method for construction sand and active ground-slag with shrend schreyerite slag, it is characterized in that, comprise the following steps:
(1) the shaping modification of shrend schreyerite solid impurity particle: to grind or to clash into or spreading mode is pulverized the tender froth slag in shrend schreyerite slag and eliminates the part sharp corners of hard particles, makes the mixture containing thicker hard particles material and granulated slag by shrend schreyerite slag;
(2) being separated of sand and granulated slag: be the granulated slag that the sand material of particle diameter >=0.15mm and particle diameter are less than 0.15mm by the mixture separation containing thicker hard particles material and granulated slag of step (1) gained;
The sand material of gained particle diameter >=0.15mm is construction sand;
(3) preparation of active ground-slag: the granulated slag and auxiliary material, the activated grinding aids that the particle diameter of step (2) gained are less than 0.15mm are granulated slag 50 ~ 90% in mass ratio: auxiliary material 10 ~ 50%: the ratio of activated grinding aids 0.05 ~ 3% is prepared burden, three's quality proportioning sum is 100%, combined grinding to 80 μm tails over≤fine powder of 12%, obtain active ground-slag.
2. shrend schreyerite slag according to claim 1 produces the method for construction sand and active ground-slag, it is characterized in that, in step (1), slightly grinding tender froth slag wherein and grinding away the part sharp corners of hard particles with bead or forging in the ball mill that described lapping mode refers to shrend schreyerite slag to send into continuously length-to-diameter ratio < 2.5.
3. shrend schreyerite slag according to claim 1 produces the method for construction sand and active ground-slag, it is characterized in that, in step (1), described shock mode refers to shrend schreyerite slag to spurt in volute or is placed in star stirrer or is placed in conical agitator or is placed in the agitator of belt grinding body, utilizes the mutual shock between the shock of shrend schreyerite slag and antifriction metal (AFM) inwall and friction and shrend schreyerite solid impurity particle and frictional force pulverize tender froth slag wherein and eliminate the sharp corners of part hard particles.
4. shrend schreyerite slag according to claim 1 produces the method for construction sand and active ground-slag, it is characterized in that, in step (1), described spreading mode refers to adopt little pressure wheel to roll over mixing equipment spreading shrend schreyerite slag, pulverizes tender froth slag wherein and eliminate the sharp corners of part hard particles with the frictional force between the slight spreading of rolling wheel and shrend schreyerite solid impurity particle.
5. the method producing construction sand and active ground-slag with shrend schreyerite slag according to claim arbitrary in claim 1-4, is characterized in that, in step (2), described separation finger Bian Powder selecting mechanism sorting or adopt vibratory screening apparatus or trommel screen screening.
6. the method producing construction sand and active ground-slag with shrend schreyerite slag according to claim arbitrary in claim 1-4, it is characterized in that, in step (3), described auxiliary material refers to slag, silicon ash, diatomite, belite-anhydrite matured slag, belite-sulplo-aluminate matured slag, aluminate clinker, sulfoaluminate clinker and is at least one in main material containing calcium aluminate or calcium sulfoaluminate minerals.
7. the method producing construction sand and active ground-slag with shrend schreyerite slag according to claim arbitrary in claim 1-4, is characterized in that, in step (3), described activated grinding aids is the commercially available activated grinding aids containing hydramine.
8. the method producing construction sand and active ground-slag with shrend schreyerite slag according to claim arbitrary in claim 1-4, is characterized in that, in step (1), adds granule modified dose that accounts for shrend schreyerite slag mass ratio 0.03 ~ 3%.
9. ask the described method producing construction sand and active ground-slag with shrend schreyerite slag according to Claim 8, it is characterized in that, described granule modified dose is one or more in hydramine, silane, water glass, sodium aluminate solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510602408.0A CN105174765B (en) | 2015-09-21 | 2015-09-21 | The method producing construction sand and active ground-slag with water quenching schreyerite slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510602408.0A CN105174765B (en) | 2015-09-21 | 2015-09-21 | The method producing construction sand and active ground-slag with water quenching schreyerite slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105174765A true CN105174765A (en) | 2015-12-23 |
| CN105174765B CN105174765B (en) | 2017-03-08 |
Family
ID=54897300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510602408.0A Active CN105174765B (en) | 2015-09-21 | 2015-09-21 | The method producing construction sand and active ground-slag with water quenching schreyerite slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105174765B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277862A (en) * | 2016-08-16 | 2017-01-04 | 武汉理工大学 | A kind of method utilizing extracting vanadium from stone coal acid leaching residue to prepare geopolymer |
| CN107010853A (en) * | 2017-04-26 | 2017-08-04 | 阜阳市鑫源建材有限公司 | A kind of method of microwave synergy activation process S95 grade slag powders |
| CN109318361A (en) * | 2017-08-01 | 2019-02-12 | 辽宁煜梽新型建材有限公司 | A kind of machine made brick production technology and system |
| CN109608068A (en) * | 2018-12-19 | 2019-04-12 | 北京科技大学 | A kind of cementitious material, the preparation method of precast concrete and precast concrete |
| CN109776023A (en) * | 2019-03-07 | 2019-05-21 | 上海宝田新型建材有限公司 | A kind of modified steel scoria Ultramicro-powder of high oil absorption value and preparation method thereof |
| CN111961355A (en) * | 2020-08-17 | 2020-11-20 | 西南石油大学 | Polymer-coated vanadium-titanium waste residue nano particle and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318528A (en) * | 2000-04-14 | 2001-10-24 | 冶金工业部建筑研究总院 | Efficient admixture for cement and concrete and its production process |
| CN1785878A (en) * | 2004-12-12 | 2006-06-14 | 攀钢集团钢城企业总公司废旧物资分公司 | Method of using vanadium titanium rotary furnace steel slag as cement iron correction material |
| CN101353245A (en) * | 2008-09-18 | 2009-01-28 | 北京科技大学 | Waste stone dust-containing high performance superfine sand concrete gel material and use method thereof |
| KR101186498B1 (en) * | 2010-06-29 | 2012-09-27 | 주식회사 윈플로 | Method for high powder slag cement and the high powder slag cement thereof |
| CN104446022A (en) * | 2014-12-18 | 2015-03-25 | 长沙紫宸科技开发有限公司 | Method for preparing steel slag sand, activated slag powder and RO phase from steel slag |
| CN104496218A (en) * | 2014-11-26 | 2015-04-08 | 长沙紫宸科技开发有限公司 | Method for preparing active slag powder by utilizing chromium slag and chromium sludge |
| CN104761160A (en) * | 2015-03-27 | 2015-07-08 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Modified slag powder and preparation method thereof |
-
2015
- 2015-09-21 CN CN201510602408.0A patent/CN105174765B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318528A (en) * | 2000-04-14 | 2001-10-24 | 冶金工业部建筑研究总院 | Efficient admixture for cement and concrete and its production process |
| CN1785878A (en) * | 2004-12-12 | 2006-06-14 | 攀钢集团钢城企业总公司废旧物资分公司 | Method of using vanadium titanium rotary furnace steel slag as cement iron correction material |
| CN101353245A (en) * | 2008-09-18 | 2009-01-28 | 北京科技大学 | Waste stone dust-containing high performance superfine sand concrete gel material and use method thereof |
| KR101186498B1 (en) * | 2010-06-29 | 2012-09-27 | 주식회사 윈플로 | Method for high powder slag cement and the high powder slag cement thereof |
| CN104496218A (en) * | 2014-11-26 | 2015-04-08 | 长沙紫宸科技开发有限公司 | Method for preparing active slag powder by utilizing chromium slag and chromium sludge |
| CN104446022A (en) * | 2014-12-18 | 2015-03-25 | 长沙紫宸科技开发有限公司 | Method for preparing steel slag sand, activated slag powder and RO phase from steel slag |
| CN104761160A (en) * | 2015-03-27 | 2015-07-08 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Modified slag powder and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277862A (en) * | 2016-08-16 | 2017-01-04 | 武汉理工大学 | A kind of method utilizing extracting vanadium from stone coal acid leaching residue to prepare geopolymer |
| CN107010853A (en) * | 2017-04-26 | 2017-08-04 | 阜阳市鑫源建材有限公司 | A kind of method of microwave synergy activation process S95 grade slag powders |
| CN107010853B (en) * | 2017-04-26 | 2019-11-15 | 阜阳市鑫源建材有限公司 | A kind of method that microwave synergy is activated S95 grade slag powder |
| CN109318361A (en) * | 2017-08-01 | 2019-02-12 | 辽宁煜梽新型建材有限公司 | A kind of machine made brick production technology and system |
| CN109608068A (en) * | 2018-12-19 | 2019-04-12 | 北京科技大学 | A kind of cementitious material, the preparation method of precast concrete and precast concrete |
| CN109776023A (en) * | 2019-03-07 | 2019-05-21 | 上海宝田新型建材有限公司 | A kind of modified steel scoria Ultramicro-powder of high oil absorption value and preparation method thereof |
| CN111961355A (en) * | 2020-08-17 | 2020-11-20 | 西南石油大学 | Polymer-coated vanadium-titanium waste residue nano particle and preparation method thereof |
| CN111961355B (en) * | 2020-08-17 | 2021-05-04 | 西南石油大学 | Polymer-coated vanadium-titanium waste residue nano particle and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105174765B (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105174765A (en) | Method for preparing construction sand and active slag powder through water-quenched vanadium-titanium slag | |
| CN110104997A (en) | A kind of regeneration concrete and its production technology | |
| JP5562863B2 (en) | How to process pozzolana | |
| CN102329105B (en) | Method for preparing concrete by taking manganese residue-steel residue-limestone powder as admixture | |
| CN110041028A (en) | A kind of regeneration concrete and preparation method thereof using building waste | |
| CN102674782B (en) | Method for preparing concrete by using basalt micropowder-slag micropowder-limestone powder as blending material | |
| CN102718423B (en) | Preparation method of low-grade activated coal ash composite material | |
| CN105130220B (en) | With discarded concrete and the method for sludge eco-cement and active sand | |
| CN112374843B (en) | Method for preparing mine filling concrete by utilizing wet-grinding steel slag ore pulp | |
| CN101081727A (en) | Steel slag sand dry powder mortar and production technique thereof | |
| CN106904847B (en) | A method of low fever's complex cement is mutually prepared using discarded concrete Behavior of Hardened Cement Paste | |
| CN110054442A (en) | A kind of regeneration concrete mixture and its preparation process | |
| CN104529312A (en) | High-admixing amount high-strength nickel slag brick and preparation method of high-admixing amount high-strength nickel slag brick | |
| CN101348334A (en) | High-purity cement, preparation and use thereof | |
| CN109279796B (en) | Design and preparation method of continuous surrounding stacking dense-grade prepared machine-made sand | |
| CN102701681A (en) | Waste foundry sand dry-mixed mortar | |
| CN102849973A (en) | Desert aeolian sand separated feldspar based alkali-activated cementing material and preparation method thereof | |
| CN103964717B (en) | The raising method of iron tailings activity, the iron tailings of gained and application | |
| CN114292081B (en) | Cement-free low-carbon concrete and preparation method thereof | |
| CN106186901A (en) | A kind of tuff-powder grinding coagulation soil being applicable to high altitude localities | |
| CN107572852A (en) | A kind of production method of high-performance ground granulated blast furnace slag | |
| CN104961363B (en) | A kind of method of the active ground-slag of use shaft kiln factory and office reason discarded concrete system and aggregate | |
| CN108840636A (en) | Improve the preparation method of mortar mechanical property | |
| CN110395956B (en) | Iron tailing micro-powder mortar dry powder for building mortar and preparation method thereof | |
| CN104844111A (en) | Blended material, preparation method thereof and concrete prepared through blended material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |