CN109456027B - Titanium slag extraction lime stabilized macadam material and preparation method thereof - Google Patents
Titanium slag extraction lime stabilized macadam material and preparation method thereof Download PDFInfo
- Publication number
- CN109456027B CN109456027B CN201811492373.XA CN201811492373A CN109456027B CN 109456027 B CN109456027 B CN 109456027B CN 201811492373 A CN201811492373 A CN 201811492373A CN 109456027 B CN109456027 B CN 109456027B
- Authority
- CN
- China
- Prior art keywords
- slag
- mass
- titanium
- crushed stone
- lime
- 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.)
- Active
Links
- 239000002893 slag Substances 0.000 title claims abstract description 123
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 239000010936 titanium Substances 0.000 title claims abstract description 83
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 83
- 239000000463 material Substances 0.000 title claims abstract description 68
- 239000004571 lime Substances 0.000 title claims abstract description 59
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 58
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 58
- 238000000605 extraction Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 239000004575 stone Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000010881 fly ash Substances 0.000 claims abstract description 28
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000010440 gypsum Substances 0.000 claims abstract description 11
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 9
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000004281 calcium formate Substances 0.000 claims abstract description 8
- 229940044172 calcium formate Drugs 0.000 claims abstract description 8
- 235000019255 calcium formate Nutrition 0.000 claims abstract description 8
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 8
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 31
- 239000000654 additive Substances 0.000 claims description 23
- 230000000996 additive effect Effects 0.000 claims description 22
- 239000013067 intermediate product Substances 0.000 claims description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 8
- 238000005660 chlorination reaction Methods 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000036284 oxygen consumption Effects 0.000 claims description 3
- 235000021323 fish oil Nutrition 0.000 claims 2
- 239000003960 organic solvent Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 19
- 239000002994 raw material Substances 0.000 abstract description 12
- 239000002440 industrial waste Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract 1
- 240000006909 Tilia x europaea Species 0.000 description 48
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 25
- 239000000292 calcium oxide Substances 0.000 description 14
- 235000012255 calcium oxide Nutrition 0.000 description 14
- 239000004568 cement Substances 0.000 description 11
- 239000002910 solid waste Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000002956 ash Substances 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005303 weighing Methods 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00775—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
本发明提供了一种提钛渣石灰稳定碎石材料及其制备方法。所述材料由结合料、碎石、外加剂和水配置而成，其中，结合料和碎石质量比为20～40：50～70，结合料包括按照质量百分比计的：50～70％提钛渣，4～16％石灰，15～30％钢渣微粉，0～20％粉煤灰，碎石包括级配碎石或钢渣碎石；外加剂质量为所述石灰质量的4～6％，外加剂包括石膏、碳酸钠、水玻璃、硫酸钠和甲酸钙中的一种或多种；水的质量为结合料、碎石和外加剂在干燥状态下质量总和的4～18％。所述制备方法可采用上述的原料进行制备。本发明的有益效果可包括：原料价格低廉，成本低；可大量包括提钛渣在内的工业废渣；施工工艺简单、方便；材料强度增长快，可缩短工期，降低工程造价。The invention provides a titanium-extracting slag-lime stabilized crushed stone material and a preparation method thereof. The material is prepared from binding material, crushed stone, admixture and water, wherein the mass ratio of binding material and crushed stone is 20-40: 50-70, and the binding material includes: 50-70% extraction by mass percentage. Titanium slag, 4-16% lime, 15-30% steel slag micropowder, 0-20% fly ash, crushed stone including graded crushed stone or steel slag crushed stone; the mass of admixture is 4-6% of the lime mass, The admixture includes one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate; the mass of water is 4-18% of the total mass of the binder, crushed stone and admixture in a dry state. The preparation method can be prepared by using the above-mentioned raw materials. The beneficial effects of the invention can include: low raw material price and low cost; a large amount of industrial waste slag including titanium extraction slag; simple and convenient construction process; rapid increase in material strength, shortening construction period and reducing construction cost.
Description
Technical Field
The invention relates to the field of road materials and the field of industrial solid waste recycling, in particular to a titanium slag-extracting lime stabilized macadam material capable of improving the strength of a pavement base and a preparation method thereof.
Background
As the famous vanadium-titanium, the Panzhihua area contains rich vanadium-titanium magnetite resources, wherein the storage amount of TiO2 is as high as 1.3 hundred million tons, which accounts for over 90 percent of the domestic known storage amount, exceeds 1/3 of the world proven storage amount and is the first place in China. Under the current smelting process technical conditions of the Pan steel, about 50% of titanium resources in raw ores enter blast furnace slag to form the titanium-containing blast furnace slag which is special for the Pan steel, the current stock level reaches 7000 more than ten thousand, the titanium-containing blast furnace slag is increased at the speed of 300 more than ten thousand every year, and the Pan steel is the Pan steel and is the secondary titanium resource which is special in China.
In order to effectively utilize the Pan steel titanium-containing blast furnace slag, from 2004, Pan steel, namely a process of high-temperature carbonization-low-temperature selective chlorination, is promoted to the key research, and a pilot line is successfully built in 2009. However, when the titanium resource is recovered, a large amount of chlorine-containing tailings, namely titanium extraction slag, is generated, and the slag contains about 2-7% of chloride through low-temperature selective chlorination, which far exceeds the requirement that the content of chloride ions in the existing industrial standard is not higher than 0.06% (mass part), so that the slag cannot be directly used for cement and concrete like common blast furnace slag, and can only be stacked and processed, such as mountain titanium extraction slag, not only occupies a large amount of land resources, but also occupies precious land resources, causes serious pollution to the surrounding environment, brings huge environmental protection pressure to enterprises, and seriously influences and restricts the development of related industries.
The key problem for restricting resource utilization of titanium extraction slag is chloride ion content, and a common method is to remove chloride ions in the titanium extraction slag by washing and other modes, for example, the chloride ion content can be reduced by multistage water washing and other modes, but by the above modes, on one hand, a treatment process is increased, and the washing waste liquid also faces the treatment problem.
While titanium slag is accumulated in a large amount and pollutes the environment, the domestic traffic construction business is also developed rapidly, and the mileage of the domestic expressway reaches 13 kilometers by the end of 16 years. Taking Sichuan province as an example, the business mileage of railways of the whole province is about 4000 kilometers and the total highway mileage is about 35 kilometers when the year is 2017. According to the traffic development planning of Sichuan province: in 2018, the mileage of the highway which has been built and under construction reaches 9785km, which is the first place in western regions. According to the reports of the Chinese traffic network: in 2018, a trunk road is newly reconstructed in Sichuan province for 1500 kilometers, a rural road is newly reconstructed for 1.6 kilometers, and the new operating mileage of an expressway is nearly 1000 kilometers.
The rapid development of traffic construction needs a large amount of engineering materials, the natural and ecological environments are seriously damaged due to the excessive exploitation and utilization of natural materials, and the exploitation period of domestic high-quality limestone resources is only 15 years according to the current consumption speed by taking limestone as an example according to statistics. The huge consumption amount and resource shortage occur in many places, which leads to the annual rise of the price of engineering materials and drives the continuous rise of the construction cost, thereby forming the vicious circle of environment destruction, price increase and environment destruction, and greatly influencing the development of domestic engineering construction.
The results of domestic and foreign research and application show that: the blast furnace slag is a good road building material, nearly more than half of blast furnace slag is used for road engineering construction in foreign countries such as developed countries of English, American and the like, and research results show that: the Pan steel titanium slag contains a large amount of amorphous substances due to water quenching treatment, has high pozzolanic activity, and has high strength after being excited by a proper exciting agent.
In the construction of domestic high-grade highways, the two-ash stabilized macadam is a typical structure in a domestic expressway base course, and with the increase of national cement yield and the increase of fly ash price, the domestic road base course mainly uses cement macadams and consumes less and less solid waste represented by the fly ash. With the increase of environmental protection pressure, on one hand, the price of cement is continuously increased, and on the other hand, a large amount of industrial solid wastes including the steel industry solid wastes cannot be well utilized, if the cement is used for road construction, a large amount of steel industry solid waste materials can be consumed, waste can be changed into valuables, and the healthy development of the steel industry is effectively promoted.
Although related personnel use industrial waste slag such as steel slag and the like as raw materials for road infrastructure construction at present, published data for extracting titanium slag for road engineering are not found.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to address one or more of the problems in the prior art as set forth above. For example, an object of the present invention is to provide a stabilized crushed stone material of titanium slag-extracted lime which can utilize industrial waste slag, and a method for producing the same.
In order to achieve the above object, the present invention provides, in one aspect, a stabilized crushed stone material from titanium slag lime. The material can be prepared from a binding material, broken stones, an additive and water, wherein the mass ratio of the binding material to the broken stones is 20-40: 50-70, wherein the binder comprises the following components in percentage by mass: 50-70% of titanium extraction slag, 4-16% of lime, 15-30% of steel slag micro powder and 0-20% of fly ash; the crushed stone comprises graded crushed stone or steel slag crushed stone; the mass of the additive is 4-6% of that of the lime, and the additive comprises one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate; the mass of the water is 4-18% of the total mass of the binder, the broken stone and the admixture in a dry state.
According to one or more exemplary embodiments on which the present invention is based, the binder may comprise the following components in mass percent: 55-62% of titanium extraction slag, 7-12% of lime, 17-25% of steel slag micro powder and the balance of fly ash.
According to one or more exemplary embodiments of the present invention, the binder includes, by mass, 50 to 70: 4-16: 15-30 of titanium extraction slag, lime and steel slag micro powder.
According to one or more exemplary embodiments on which the invention is based, the graded macadam has a crush value of 22% or less, a content of pin-flaked particles of 18% or less, a dust content of 1.2% or less at 0.075mm or less, and a soft stone content of 3% or less.
According to one or more exemplary embodiments of the present invention, the steel slag crushed stone may be prepared from steel slag aged for more than 6 months, and the f-CaO content of the steel slag crushed stone is not more than 4%.
According to one or more exemplary embodiments on which the present invention is based, the steel slag crushed stone may have a particle size of 60mm or less, and may include the following components in mass percent: 35-40% CaO, 16-20.5% SiO2、3.5～6％Al2O3、4～6.5％MgO、8～11％FeO、14～18％％Fe2O3、1.5～3.4％MnO、1.0～1.5％P2O5、1.4～2.1％TiO2。
According to one or more exemplary embodiments of the present invention, the steel slag micro powder has a particle size of 20 μm or less, and the f-CaO content of the steel slag micro powder may be 2.5 to 4.5%.
According to one or more exemplary embodiments of the present invention, the steel slag micropowder may include the following components in percentage by mass: 35-40% CaO, 16-20.5% SiO2、3.5～6％Al2O3、4～6.5％MgO、8～11％FeO、14～18％％Fe2O3、1.5～3.4％MnO、1.0～1.5％P2O5、1.4～2.1％TiO2。
According to one or more exemplary embodiments on which the present invention is based, the SiO in the fly ash2、Al2O3And Fe2O3The sum of the mass percentages of the components can be more than 70 percent, the mass fraction of the ignition loss is less than 20 percent, and the specific surface area of the fly ash is 2500cm2More than g.
According to one or more exemplary embodiments on which the present invention is based, the mass of the water is 6 to 14% of the mass of the base stock in a dry state.
According to one or more exemplary embodiments on which the present invention is based, the titanium extraction slag may include: the titanium-containing blast furnace slag is extracted by a high-temperature carbonization-low-temperature selective chlorination process.
According to one or more exemplary embodiments on which the invention is based, the sum of the mass fractions of CaO and MgO in the dry powder of lime may be not less than 90%, and the mass fraction of MgO may not exceed 5%, SO3The mass fraction may not exceed 2%.
According to one or more exemplary embodiments on which the present invention is based, the gypsum may include one or more of phosphogypsum, desulphurisation gypsum and natural gypsum.
The invention also provides a preparation method of the titanium slag-extracted lime stabilized macadam material. The method can be used for preparing the compound fertilizer by adopting the raw materials and the raw material proportion.
The preparation method of the titanium slag-extracting lime stabilized macadam material comprises the following steps: mixing a binder and an additive, and uniformly stirring to obtain a first intermediate product, wherein the binder comprises the following components in percentage by mass: 50-70% of titanium extraction slag, 4-16% of lime, 5-30% of steel slag micro powder and 0-20% of fly ash, wherein the mass of the additive is 4-6% of that of the lime, and the additive comprises one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate; mixing the first intermediate product and the crushed stone, and uniformly stirring to obtain a second intermediate product, wherein the mass ratio of the crushed stone to the binder is 50-70: 20-40, wherein the crushed stone comprises graded crushed stone or steel slag crushed stone; adding water into the second intermediate product, and uniformly mixing to obtain a third intermediate product, wherein the mass of the water is 4-18% of that of the second intermediate product in a dry state; and rolling and molding the third intermediate product, and maintaining moisture to obtain the titanium slag-extracted lime stabilized macadam material.
Compared with the prior art, the beneficial effects of the invention can include: the raw materials are low in price and low in cost; a large amount of industrial waste residues including titanium extraction residues can be obtained; the construction process is simple and convenient; the strength of the material is increased quickly, the working period can be shortened, and the construction cost is reduced.
Detailed Description
Hereinafter, the titanium slag-extracting lime-stabilized crushed stone material and the method of manufacturing the same of the present invention will be described in detail with reference to the exemplary embodiments.
The titanium extraction slag is obtained by high-temperature carbonization-low-temperature chlorination of titanium-containing blast furnace slag, is difficult to be widely applied due to high chloride ion content, is mainly accumulated at present, occupies a large amount of land resources, and can pollute the environment, thereby seriously influencing and restricting the development of the titanium extraction industry.
In order to solve the problem of utilization of the titanium extraction slag, the invention provides the lime stabilized macadam material for the titanium extraction slag, which can consume a large amount of the titanium extraction slag on the premise of meeting the performance requirement of a pavement base material, thereby changing waste into valuable and realizing the resource utilization of solid waste materials.
In an exemplary embodiment of the invention, the titanium slag-extracted lime stabilized macadam material may be formulated from a binder, graded macadam, an admixture, and water. Wherein the mass ratio of the binder to the graded broken stones is 20-40: 50-70. The amount of the additive is 4-6% of the mass of the binder.
The binder comprises the following components in percentage by mass: 50-70% of titanium extraction slag, 4-16% of lime, 15-30% of steel slag micro powder and 0-20% of fly ash. The fly ash can be added or not added, when the fly ash is not added, the use of the fly ash is not influenced, but after the fly ash is added, the later strength can be improved, the volume stability can be better, the price of the fly ash is higher, so that the practical experiment mainly considers that the use amount of titanium slag is increased, the use amount of the fly ash is limited, and the use amount of the fly ash is limitedThe addition amount of the ash is 0-20%, and the requirement of strength index can be met. Lime is an important excitation material, when the content of lime is low, the excitation effect is not obvious enough, the strength of the prepared stabilized macadam material is low, and when the content of lime is too high, on one hand, the material cost is greatly increased, and meanwhile, excessive Ca (OH) is generated2Also, the early strength of the stabilized macadam is affected, so the optimum proportion is 4-16%. The steel slag micro powder is too high in doping amount, low in early strength and low in doping amount, so that the middle and later strength is not increased favorably, and the optimal doping amount is 15-30%. SiO in the fly ash2、Al2O3And Fe2O3The total content of the components should be more than 70%, the ignition loss should not exceed 20%, and the specific surface area should be more than 2500cm2(ii)/g; when wet fly ash is adopted, the water content is not more than 25%, and corresponding water content should be deducted when water is added in the design of the mixing proportion.
The technical indexes of the graded crushed stone are as follows: the crushing value is less than or equal to 22 percent, the content of needle-shaped particles is less than or equal to 18 percent, the content of dust below 0.075mm is less than or equal to 1.2 percent, and the content of soft stones is less than or equal to 3 percent.
The admixture may comprise one or more of gypsum, sodium carbonate, water glass, sodium sulphate and calcium formate. The admixture can be 4-6% of the lime by mass, the admixture is too low, the excitation effect is not obvious enough, the admixture is too high, the engineering cost can be increased, and the reasonable admixture is 4-6% of the lime dosage.
The mass of the water is 4-18% of that of the solid raw materials (namely the binding material, the graded crushed stone and the additive) in a dry state, so that the titanium slag-extracted lime stabilized crushed stone material can reach the maximum compact state on the premise of meeting the water consumption of hydration reaction; the strength of the prepared material is influenced by incomplete hydration reaction due to too low water amount; also, too high a quantity of water results in the presence of too much free water, which, after evaporation, produces excessive porosity, also detrimental to the strength of the material prepared. Further, the mass of the water is 6-14% of the mass of the solid raw material in a dry state. Wherein, the water should meet the following requirements: pH value of not less than 6.5 and not more than 9.5, total oxygen consumption of not more than 5mg/L, turbidity (NTU-scattering turbidity) of not more than 3, total organic carbon of not more than 5mg/L, and no odor and peculiar smell.
In this embodiment, the titanium extraction slag may include: the titanium-containing blast furnace slag is extracted by a high-temperature carbonization-low-temperature selective chlorination process. Or fine slag after further grinding or crushing. The titanium extraction slag can be raw slag of steel climbing titanium extraction slag without any treatment, and the 60-mesh sieve passing rate of the slag is 100 percent, and the 200-mesh sieve passing rate is more than or equal to 45 percent. Or the titanium extraction slag can be fine slag after further grinding or crushing. If the fine slag passing rate of 100 meshes after grinding or crushing is 100 percent and the passing rate of 200 meshes reaches over 75 percent, the performance of the prepared material is better.
The titanium extraction slag can comprise the following components in percentage by mass: 28-33% CaO, 20-25% SiO2、10～14％Al2O3、2～7％MgO、2～10％TiO2、2～4％Fe2O3And 2-5% of Cl element.
When the content of the titanium extraction slag is too low, the active ingredients in the binder are obviously low, and the strength is greatly influenced, so that the stabilizing effect is reduced, the resource utilization and the strength increase of the stabilized macadam are comprehensively considered, and the mass percentage of the titanium extraction slag in the binder can be 50-70%.
In this embodiment, the lime may be quick lime or slaked lime. When the lime is quicklime, fresh quicklime powder, CO thereof is preferably used2The content is not more than 4%. When the slaked lime is adopted, the mass fraction of free water in the slaked lime is not more than 2%, and the stability index is qualified. No matter quicklime powder or slaked lime powder is adopted, the sum of the mass fractions of CaO and MgO in dried lime powder after drying (for example, 105 ℃) is not less than 90 percent, the mass fraction of MgO is not more than 5 percent, and SO is3The mass fraction is not more than 2%. The lime can completely pass through a 20-mesh sieve, the passing rate of a 200-mesh sieve is not less than 98%, and the passing rate of a 300-mesh sieve is not less than 55%.
The lime mainly has the function of exciting active components in the titanium extraction slag and simultaneously forming a strong alkaline environment, which is beneficial to the reaction, and the lime water solution calcium hydroxide also directly participates in the hydration reaction and generates hydration products such as C-S-H, C-A-H, ettringite and the like after being hydrated together with the active components in the titanium extraction slag, and the products provide the strength of the prepared material after being hardened.
In this example, the median particle diameter d of the steel slag micropowder50Less than or equal to 10 mu m and the maximum grain diameter dmaxLess than or equal to 20 mu m; in other words, the granularity of the steel slag micro powder can be 1-20 μm, when the granularity is too small, the crushing cost is too high, and when the granularity is too large, the strength of the prepared composite material in the middle and later periods is increased disadvantageously, and the problem of volume stability is possibly brought, and the granularity can be 1-20 μm by comprehensively considering the technical economy; further, the particle size may be 10 μm or less.
The steel slag micro powder comprises the following main components in percentage by mass: 35-40% CaO, 16-20.5% SiO2、3.5～6％Al2O3、4～6.5％MgO、8～11％FeO、14～18％％Fe2O3、1.5～3.4％MnO、1.0～1.5％P2O5、1.4～2.1％TiO2. The content of free calcium oxide f-CaO may be 4% or less (mass fraction), for example, 2.5% ± 0.8%. If the free calcium oxide (f-CaO) exceeds 4%, the volume stability will be affected and the prepared material is liable to crack.
For example, the steel slag micro powder can comprise the following components in percentage by mass: 38.64% CaO, 18.62% SiO2、4.87％Al2O3、5.36％MgO、9.53％FeO、16.71％Fe2O3、2.02％MnO、1.28％P2O5、1.63％TiO2And the content of other substances: 1.34%, wherein the free calcium oxide f-CaO is 3.2%.
In this embodiment, the graded crushed stone can be replaced by steel slag crushed stone meeting the requirements of aging time and stability. The aging time is not less than 6 months, the content of f-CaO after aging is not more than 4 percent (mass fraction), and the used steel slag micro powder is the same as the steel slag crushed stone raw material. When the graded broken stone is steel slag broken stone, the maximum grain size of the steel slag broken stone is not more than 60mm, and the performance technical indexes of the steel slag broken stone are shown in table 1 according to different layer positions of materials.
TABLE 1 Steel slag Property specifications
In another exemplary embodiment of the invention, the titanium slag-extracting lime stabilized macadam material can be prepared from the following components in percentage by mass:
extracting titanium slag: 50-70%; lime: 5-16%; fly ash: 0 to 25 percent; steel slag micro powder: 10-35%; the materials are calculated according to the mass percentage, the total amount is 100 percent, and the materials form the binder together.
Additive: 4-6% of the mass of the binder, wherein the admixture is formed by mixing one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate, and the mass of the admixture is 100% after the one or more components are mixed.
Grading broken stone: 50-70%. If the content of the graded crushed stone is lower than 50%, the consumption of titanium slag extraction is high, and the content of the crushed stone in the obtained suspension structure is lower, so that the performance can be influenced to a certain extent.
Water: the total mass of the three materials of the binding material, the additive and the graded crushed stone is 4-18% in a dry state.
In this embodiment, further, the mass ratio of each component may be as follows:
extracting titanium slag: 55-65%; lime: 6-12%; fly ash: 0 to 20 percent; steel slag micro powder: 15-30%; grading broken stone: 50-65%; the total content of the materials is 100 percent by weight.
Water: the total mass of the five materials is 6-14% in a dry state.
Additive: 4-6% of the mass of the binder, and the sum of the above materials is 100% by mass.
In the embodiment, when the material is prepared, the binder, the additive and the graded broken stone are firstly added into a mixer in proportion, the mixture is dry-mixed for 2-5 min, then water is added in proportion, the mixture is uniformly mixed, water dispersion and material segregation are avoided in the transportation process, and after rolling forming, moisture preservation and maintenance are carried out for more than 7 days.
In this example, the raw materials in the above example may be used for each raw material.
The 7d unconfined compressive strength of the titanium slag-extracted lime stabilized macadam in the two exemplary embodiments exceeds 3MPa, and the titanium slag-extracted lime stabilized macadam has the characteristics of fast strength increase, high strength, small dry shrinkage deformation, simple construction, high solid waste recycling degree and the like, is beneficial to recycling of industrial solid wastes, is an ideal road structure layer material, and can be widely used for various levels of road engineering.
The invention also provides a preparation method of the titanium slag-extracted lime stabilized macadam material. The method can adopt the titanium extraction slag, lime, fly ash, steel slag micro powder, graded crushed stone (or steel slag crushed stone), an additive and water as raw materials.
In another exemplary embodiment of the present invention, the preparation method may include the steps of:
mixing the binder and the additive, and uniformly stirring to obtain a first intermediate product; wherein, the binding material comprises the following components by mass percent: 50-70% of titanium extraction slag, 6-14% of lime, 20-30% of steel slag micro powder and the balance of fly ash; the mass of the additive is 4-6% of that of the binder, and the additive comprises one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate.
The mass ratio is (24-46): (54-76) mixing the first intermediate product with the graded crushed stone, and uniformly stirring to obtain a second intermediate product; adding a certain amount of water into the second intermediate product, and uniformly mixing to obtain a third intermediate product, wherein the mass of the water is 4-18% of that of the second intermediate product in a dry state;
and rolling and molding the third intermediate product, and maintaining moisture to obtain the titanium slag-extracted lime stabilized macadam material.
In another exemplary embodiment of the present invention, the preparation method may include the steps of: weighing lime, titanium extraction slag, fly ash, steel slag micro powder, graded broken stone and additives according to the proportion in the above exemplary embodiments, placing the materials into a mixer to be uniformly stirred (the materials can be dry-stirred for 2-5 min), then adding water with a specified proportion, and further uniformly mixing.
And (4) transporting the mixed stabilized soil to a construction site, rolling to a specified compactness after paving, and preserving moisture and maintaining for more than 7 days.
In conclusion, the titanium slag-extracting lime stabilized macadam material and the preparation method thereof have the advantages that:
(1) compared with the common lime stabilized macadam and cement macadam, the lime and titanium slag are used as main stabilizing materials, the lime and titanium slag are low in price, and a large amount of industrial waste slag can be consumed.
(2) The prepared stabilized macadam is used for road engineering, can replace common lime stabilized macadam and cement macadam, and has obvious price advantage especially for low-grade roads in villages.
(3) The production equipment of the lime stabilized macadam and the cement macadam can be adopted, the production and construction process is simpler, and the construction is convenient.
(4) Compared with the lime stabilized macadam, the strength is increased quickly, the 7d unconfined compressive strength can reach more than 3MPa, exceeds the 28d strength of the lime stabilized macadam and is equivalent to the 7d strength of the cement stabilized macadam, so the construction period can be shortened, and the construction cost is reduced.
(5) Compared with the two-ash stabilized macadam, the cost of extracting titanium slag stabilized macadam by each cubic lime can be saved by more than 50 yuan, compared with the cement macadam, the cost of extracting titanium slag stabilized macadam by each cubic lime can be saved by more than 80 yuan, and the economic benefit is very obvious.
(6) Because a large amount of industrial waste residues are consumed, valuable land resources can be saved, the environment is protected, the pollution is reduced, and the social benefit is remarkable.
(7) The invention provides a resource method with large consumption and high added value for the steel climbing titanium slag, and compared with the traditional cement macadam, the method has lower material cost and higher popularization and application value.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The titanium slag-extracting lime-stabilized macadam material is characterized by being prepared from a binding material, macadams, an additive and water, wherein the mass ratio of the binding material to the macadams is 20-40: 50 to 70 of the total amount of the organic solvent,
the binding material comprises the following components in percentage by mass: 50-70% of titanium extraction slag, 4-16% of lime, 15-30% of steel slag micro powder and 0-20% of fly ash;
the crushed stone comprises graded crushed stone or steel slag crushed stone;
the mass of the additive is 4-6% of that of the lime, and the additive comprises one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate;
the mass of the water is 4-18% of the total mass of the binder, the broken stone and the admixture in a dry state, and the water meets the following requirements: the pH value is more than or equal to 6.5 and less than or equal to 9.5, the total oxygen consumption is less than or equal to 5mg/L, the turbidity is less than or equal to 3, the total organic carbon is less than or equal to 5mg/L, and the fish oil has no peculiar smell and peculiar smell;
the titanium extraction slag comprises: slag obtained after titanium is extracted from the titanium-containing blast furnace slag through a high-temperature carbonization-low-temperature selective chlorination process;
the sum of the mass fractions of CaO and MgO in the dry powder of lime is not less than 90 percent, the mass fraction of MgO is not more than 5 percent, and SO3The mass fraction is not more than 2 percent;
the granularity of the steel slag micro powder is below 20 mu m, and the f-CaO content in the steel slag micro powder is 2.5-4%;
the steel slag crushed stone is prepared from steel slag aged for more than 6 months, and the f-CaO content in the steel slag crushed stone is not more than 4%;
SiO in the fly ash2、Al2O3And Fe2O3The sum of the mass percentages of the components is more than 70 percent, and the mass fraction of the ignition loss is less than 20 percent.
2. The titanium slag-extracting lime-stabilized crushed stone material as claimed in claim 1, wherein the crushed value of the graded crushed stone is 22% or less, the content of needle-like particles is 18% or less, the content of dust below 0.075mm is 1.2% or less, and the content of soft stone is 3% or less.
3. The titanium slag-extracting lime stabilized macadam material according to claim 1, wherein the steel slag macadam has a particle size of 60mm or less, and comprises the following components in percentage by mass:
35～40％CaO、16～20.5％SiO2、3.5～6％Al2O3、4～6.5％MgO、8～11％FeO、14～18％％Fe2O3、1.5～3.4％MnO、1.0～1.5％P2O5、1.4～2.1％TiO2。
4. the titanium slag-extracting lime-stabilized macadam material of claim 1, wherein the steel slag micro powder comprises the following components in percentage by mass:
35～40％CaO、16～20.5％SiO2、3.5～6％Al2O3、4～6.5％MgO、8～11％FeO、14～18％％Fe2O3、1.5～3.4％MnO、1.0～1.5％P2O5、1.4～2.1％TiO2。
5. the titanium slag-extracting lime-stabilized macadam material of claim 1, wherein the specific surface area of the fly ash is 2500cm2More than g.
6. The preparation method of the titanium slag-extracted lime stabilized macadam material is characterized by comprising the following steps of:
mixing a binder and an additive, and uniformly stirring to obtain a first intermediate product, wherein the binder comprises the following components in percentage by mass: 50-70% of titanium extraction slag, 4-16% of lime, 5-30% of steel slag micro powder and 0-20% of fly ash, wherein the mass of the additive is 4-6% of that of the lime, and the additive comprises one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate;
mixing the first intermediate product and the crushed stone, and uniformly stirring to obtain a second intermediate product, wherein the mass ratio of the crushed stone to the binder is 50-70: 20-40, wherein the crushed stone comprises graded crushed stone or steel slag crushed stone;
adding water into the second intermediate product, and uniformly mixing to obtain a third intermediate product, wherein the mass of the water is 4-18% of that of the second intermediate product in a dry state;
rolling and molding the third intermediate product, and maintaining moisture to obtain the titanium slag-extracted lime stabilized macadam material;
wherein the water meets the following requirements: the pH value is more than or equal to 6.5 and less than or equal to 9.5, the total oxygen consumption is less than or equal to 5mg/L, the turbidity is less than or equal to 3, the total organic carbon is less than or equal to 5mg/L, and the fish oil has no peculiar smell and peculiar smell;
the titanium extraction slag comprises: slag obtained after titanium is extracted from the titanium-containing blast furnace slag through a high-temperature carbonization-low-temperature selective chlorination process;
the sum of the mass fractions of CaO and MgO in the dry powder of lime is not less than 90 percent, the mass fraction of MgO is not more than 5 percent, and SO3The mass fraction is not more than 2 percent;
the granularity of the steel slag micro powder is below 20 mu m, and the f-CaO content in the steel slag micro powder is 2.5-4%;
the steel slag crushed stone is prepared from steel slag aged for more than 6 months, and the f-CaO content in the steel slag crushed stone is not more than 4%;
SiO in the fly ash2、Al2O3And Fe2O3The sum of the mass percentages of the components is more than 70 percent, and the mass fraction of the ignition loss is less than 20 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811492373.XA CN109456027B (en) | 2018-12-07 | 2018-12-07 | Titanium slag extraction lime stabilized macadam material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811492373.XA CN109456027B (en) | 2018-12-07 | 2018-12-07 | Titanium slag extraction lime stabilized macadam material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109456027A CN109456027A (en) | 2019-03-12 |
| CN109456027B true CN109456027B (en) | 2022-03-01 |
Family
ID=65612709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811492373.XA Active CN109456027B (en) | 2018-12-07 | 2018-12-07 | Titanium slag extraction lime stabilized macadam material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109456027B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683817A (en) * | 2019-09-27 | 2020-01-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium slag roadbed material and preparation method and application thereof |
| CN115093193B (en) * | 2022-06-20 | 2023-07-21 | 重庆交通大学 | Lime stabilized macadam material for fly ash generated by incineration of household garbage and preparation method thereof |
| CN115010449A (en) * | 2022-06-24 | 2022-09-06 | 西南科技大学 | Secondary ash stabilizing material, method for extracting titanium slag and improving early strength of titanium slag and application of secondary ash stabilizing material |
| CN115159881A (en) * | 2022-07-06 | 2022-10-11 | 西南科技大学 | A kind of delayed setting alkali excited titanium slag cement and preparation method |
| CN115180841A (en) * | 2022-07-06 | 2022-10-14 | 西南科技大学 | Alkali-activated titanium slag extraction cement and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880996A (en) * | 2009-05-07 | 2010-11-10 | 中冶天工上海十三冶建设有限公司 | Cement-stabilizing broken stone used for highway subgrade |
| CN103664107A (en) * | 2013-12-09 | 2014-03-26 | 中铁五局（集团）有限公司 | Stable broken stone structure layer prepared form industrial waste alkaline residue and cement, and construction method thereof |
| CN106336173A (en) * | 2016-08-17 | 2017-01-18 | 北京通汇盛通环保科技发展有限公司 | High-performance cement stabilized macadam and preparation method thereof |
| CN106830816A (en) * | 2016-12-26 | 2017-06-13 | 上海中冶环境工程科技有限公司 | A kind of cement stabilized macadam for pervious concrete |
| CN107098614A (en) * | 2017-06-23 | 2017-08-29 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of curing agent and the curing of titanium extraction tailings for titanium extraction tailings |
| CN107445560A (en) * | 2017-09-11 | 2017-12-08 | 苏州东振路桥工程有限公司 | A kind of cement stabilized macadam |
| CN108358578A (en) * | 2018-03-01 | 2018-08-03 | 西南科技大学 | A kind of titanium extraction tailings-titanium gypsum base foam concrete and preparation method thereof |
| CN108545970A (en) * | 2018-04-08 | 2018-09-18 | 西南科技大学 | A kind of titanium extraction tailings-titanium gypsum base composite gelled material and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU510453A1 (en) * | 1974-06-18 | 1976-04-15 | Харьковский Ордена Ленина Политехнический Институт Им. В.И.Ленина | Raw mix for the production of heat-resistant concrete |
| JP4942433B2 (en) * | 2006-09-13 | 2012-05-30 | テイカ株式会社 | Roadbed material using neutralization ridge and method for producing the same |
-
2018
- 2018-12-07 CN CN201811492373.XA patent/CN109456027B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880996A (en) * | 2009-05-07 | 2010-11-10 | 中冶天工上海十三冶建设有限公司 | Cement-stabilizing broken stone used for highway subgrade |
| CN103664107A (en) * | 2013-12-09 | 2014-03-26 | 中铁五局（集团）有限公司 | Stable broken stone structure layer prepared form industrial waste alkaline residue and cement, and construction method thereof |
| CN106336173A (en) * | 2016-08-17 | 2017-01-18 | 北京通汇盛通环保科技发展有限公司 | High-performance cement stabilized macadam and preparation method thereof |
| CN106830816A (en) * | 2016-12-26 | 2017-06-13 | 上海中冶环境工程科技有限公司 | A kind of cement stabilized macadam for pervious concrete |
| CN107098614A (en) * | 2017-06-23 | 2017-08-29 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of curing agent and the curing of titanium extraction tailings for titanium extraction tailings |
| CN107445560A (en) * | 2017-09-11 | 2017-12-08 | 苏州东振路桥工程有限公司 | A kind of cement stabilized macadam |
| CN108358578A (en) * | 2018-03-01 | 2018-08-03 | 西南科技大学 | A kind of titanium extraction tailings-titanium gypsum base foam concrete and preparation method thereof |
| CN108545970A (en) * | 2018-04-08 | 2018-09-18 | 西南科技大学 | A kind of titanium extraction tailings-titanium gypsum base composite gelled material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109456027A (en) | 2019-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109456027B (en) | Titanium slag extraction lime stabilized macadam material and preparation method thereof | |
| CN102329105B (en) | Method for preparing concrete with manganese slag-steel slag-limestone powder as admixture | |
| CN112374843B (en) | Method for preparing mine filling concrete by utilizing wet-grinding steel slag ore pulp | |
| CN109400084B (en) | High-solid waste alkali-activated titanium slag extraction stabilized soil and preparation method thereof | |
| CN112608043B (en) | A kind of high-strength nickel slag-based solid waste cementitious material and preparation method thereof | |
| CN111153664B (en) | Road base material produced by stabilizing waste concrete building waste aggregate with lime red mud | |
| CN114671633B (en) | A kind of all-solid waste clinker-free cementitious material, conductive mortar and preparation method thereof | |
| CN107352896A (en) | A kind of cinder powder regenerated aggregate concrete and preparation method thereof | |
| CN102329119B (en) | High performance concrete admixture and preparation method thereof | |
| CN111908862A (en) | Renewable environment-friendly pervious concrete and preparation method thereof | |
| CN102838306A (en) | Method for preparing inorganic mixture by using waste concrete recycled aggregate | |
| CN105366969A (en) | Recycled self-hardening cementing material and preparation method thereof | |
| CN104860612A (en) | C25 green high-performance concrete prepared from all recycled coarse aggregate | |
| CN114230258A (en) | A kind of autoclaved lime-sand brick prepared by using ultra-fine copper tailings | |
| CN102503196A (en) | Method for preparing cement clinker by using waste concrete | |
| CN103588440B (en) | A kind of road engineering cement and construction refuse regenerated powder composite inorganic binder | |
| CN109369089A (en) | Mix the mortar of preparation again by iron tailings sand and artificial sand | |
| CN114292081B (en) | Cement-free low-carbon concrete and preparation method thereof | |
| CN101274824A (en) | Cement clinker and its preparation method | |
| CN114014574B (en) | Treatment method of high-sulfur copper tailing slag and concrete prepared from modified copper tailings | |
| CN103553398A (en) | Concrete composite admixture and preparation method and application thereof | |
| CN103232181A (en) | Preparation method of titanium dioxide slag concrete additive | |
| CN106220061A (en) | Concrete prepared by a kind of mine tailing waste residue replacement flyash and fine aggregate | |
| CN102617060A (en) | Kaolin gangue composite powder and application of same in premixed concrete | |
| CN104177035A (en) | Inorganic mixture |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |