CN113704983B - Automatic mineral powder production batching method based on component characteristics of vanadium-titanium ore slag and application - Google Patents
Automatic mineral powder production batching method based on component characteristics of vanadium-titanium ore slag and application Download PDFInfo
- Publication number
- CN113704983B CN113704983B CN202110932275.9A CN202110932275A CN113704983B CN 113704983 B CN113704983 B CN 113704983B CN 202110932275 A CN202110932275 A CN 202110932275A CN 113704983 B CN113704983 B CN 113704983B
- Authority
- CN
- China
- Prior art keywords
- powder
- slag powder
- vanadium
- slag
- ore
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 207
- 239000002893 slag Substances 0.000 title claims abstract description 179
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 69
- 239000011707 mineral Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 230000000694 effects Effects 0.000 claims abstract description 86
- 238000006467 substitution reaction Methods 0.000 claims abstract description 39
- 239000010936 titanium Substances 0.000 claims description 19
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 10
- 230000000875 corresponding effect Effects 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000003607 modifier Substances 0.000 claims description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910001424 calcium ion Inorganic materials 0.000 claims description 2
- 239000004566 building material Substances 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000004567 concrete Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910003849 O-Si Inorganic materials 0.000 description 1
- 229910003872 O—Si Inorganic materials 0.000 description 1
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 description 1
- 229910003077 Ti−O Chemical group 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 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
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium(II) oxide Chemical group [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Civil Engineering (AREA)
- Evolutionary Computation (AREA)
- Computer Hardware Design (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of building materials, in particular to an automatic mineral powder production batching method based on the component characteristics of vanadium-titanium ore slag and application thereof. The invention provides a batching method for producing mineral powder based on vanadium titanium ore slag powder, which takes the available CaO content of the vanadium titanium ore slag powder as an index and establishes a quantitative relation between the available CaO content of the vanadium titanium ore slag powder, the specific surface area S, the substitution quantity P of the vanadium titanium ore slag powder for replacing the slag powder and the activity index A of the mineral powder. The batching method can conveniently and effectively predict the quality performance of the vanadium-titanium slag powder with different sources and components, and can batching to produce mineral powder meeting the requirements of different performance grades by quickly selecting proper vanadium-titanium slag doping amount, thereby saving the workload of carrying out multiple tests and the waiting time of 28d mechanical property detection after obtaining certain vanadium-titanium slag by the traditional method, obviously saving the consumption of personnel and material resources in the process of batching the vanadium-titanium slag to produce the mineral powder and improving the timeliness of mineral powder production.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an automatic mineral powder production batching method based on the component characteristics of vanadium-titanium ore slag and application thereof.
Background
The vanadium-titanium ore slag is waste slag generated in blast furnace iron making by taking vanadium-titanium magnetite as a main raw material. Generally, about 0.3 to 0.6 ton of slag is produced per 1 ton of iron produced, and the lower the taste of the iron ore, the greater the amount of slag discharged.
Compared with common slag, the vanadium-titanium slag has higher TiO 2 content, and even the quenching method is adopted, a large amount of anhydrous perovskite with hard activity can be generated, so that the vanadium-titanium slag has higher glass body polymerization degree, lower hydration activity and poorer grindability. The special property of low hydration activity of vanadium-titanium slag becomes a constraint condition that the vanadium-titanium slag cannot be utilized in a large scale, so that a large amount of vanadium-titanium slag is piled up, a large amount of land is occupied, resource waste and environmental pollution are caused, and the cost of occupying the land and treating the environment is increased for a production enterprise. Meanwhile, as the consumption and reduction of high-quality active mineral admixture resources such as slag powder, fly ash and the like, other potentially available alternative cementing materials need to be developed. Under such circumstances, it is therefore necessary to develop and utilize the building material resources of the schreyerite slag.
The prior research shows that the powder of the ground vanadium-titanium slag has certain gelling activity and can be used as a cement mixture or a concrete admixture. However, because the self TiO 2 has higher content and lower activity, the activity requirement of S75-grade mineral powder is difficult to be met, and the use effect of the S75-grade mineral powder as an active admixture is poor, the common solution is to compound the S75-grade mineral powder with common slag at present to prepare mineral powder with different activity grades, thereby being reused as a cement admixture or a concrete admixture.
However, in actual production, when the schreyerite slag is used for replacing common slag to prepare different grades of mineral powder for concrete, a plurality of groups of replacement amount and at least as long as 28 days of gum sand activity tests are needed, whether the schreyerite slag can be used for preparing mineral powder or not is further judged according to activity index results obtained after the tests, and whether the required mineral powder activity level and the proper replacement amount thereof can be achieved.
Therefore, development of a batching method suitable for industrial application and capable of rapidly and accurately realizing production of mineral powder from schreyerite slag is urgently needed, and the batching method has important significance in promoting efficient building material resource utilization of schreyerite slag.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic batching method for mineral powder production based on the component characteristics of schreyerite slag. The method can rapidly and accurately prepare different kinds of schreyerite slag powder into mineral powder with required activity level. The method is simpler and more convenient, is suitable for industrial application, and has important significance for promoting the efficient building material resource utilization of the schreyerite slag.
According to the batching method for producing the mineral powder based on the vanadium-titanium ore slag powder, provided by the invention, the available CaO content of the vanadium-titanium ore slag powder is taken as an index, and the quantitative relation between the available CaO content of the vanadium-titanium ore slag powder, the specific surface area S, the substitution quantity P of the vanadium-titanium ore slag powder for substituting the slag powder and the activity index A of the mineral powder is established.
The invention provides a batching method for applying the concept of available CaO content to the process of producing mineral powder from the vanadium-titanium ore slag powder for the first time, and establishes the quantitative relation between the available CaO content of the vanadium-titanium ore slag powder, the specific surface area S, the substitution quantity P of the vanadium-titanium ore slag powder for substituting the slag powder and the activity index A of the mineral powder by utilizing the index; the quantitative relation can accurately reflect the action relation between each factor and the mineral powder activity index, thereby providing practical guiding significance for the batching proportion of the mineral powder produced by the schreyerite slag powder.
Meanwhile, the method can effectively utilize the vanadium-titanium ore slag powder, solves the problems of low comprehensive utilization rate and environmental pollution caused by stacking, reduces the production cost of building materials, and has remarkable economic, environmental and social benefits.
Further, the invention discovers that about 76% of titanium in the schreyerite slag powder exists as tetravalent Ti 4+ and 24% of titanium exists as trivalent Ti 3+ through the research on the mechanism of the hydration activity reduction of the schreyerite slag powder, and the titanium in the two valence states exists in a five-coordination form in a tetragonal pyramid geometry consisting of titanium oxygen atoms.
By studying the local environment around titanium in vanadium-titanium slag, it is found that, taking Ti 4+ as an example, five-coordinated Ti 4+ forms ti=o bonds of non-bridging oxygen with one oxygen atom and Ti-O bridging oxygen bonds with the other four oxygen atoms in a pyramid geometry structure with a square bottom, the nearest neighbor of Ti 4+ is an O atom. In the secondary vicinity of Ti 4+, pentacoordinated Ti is linked to the silicate framework via Ti-O-Si bonds, whereas the shorter non-bridging oxygens of ti=o bonds require local charge compensation of Ca 2+ ions.
Pentacoordinated Ti is usually present in its glassy structure as a stabilizer for silicate network structure and has the effect of increasing the degree of polymerization of the glassy body. In the vitreous network structure, no matter Ti 4+ or Ti 3+ needs Ca 2+ ions to compensate the valence bond of titanium, the effect of balancing charges is achieved, therefore, the availability of Ca 2+ ions in the vitreous structure is reduced by the Ti ions through the charge compensation effect, the content of Ca 2+ ions which can be active in the vitreous structure and serve as network modifiers is reduced, and therefore, the overall solubility of the vanadium titanium slag is reduced due to the existence of penta-coordination Ti, and the hydration activity of the vanadium titanium slag is reduced.
Based on the principle, the invention determines that the available CaO content is the CaO content which can be used as a network modifier to provide activity in the vanadium-titanium slag glass body structure, namely the content of the CaO corresponding to the calcium ions required for balancing the five-coordination Ti charges is subtracted from the total CaO content in the vanadium-titanium slag.
Through further analysis and calculation, the calculation formula for determining the content of the available CaO is as follows:
Available CaO content = total CaO content in schreyerite slag powder-1.12 x total TiO 2 content in schreyerite slag powder.
Further, on the basis of determining the available CaO content, the quantitative relation between the available CaO content of the schreyerite slag powder, the specific surface area S, the substitution quantity P of the schreyerite slag powder for substituting the slag powder and the activity index A of the mineral powder is established, and the quantitative relation is specifically as follows:
A7＝-18.620+0.649×aCaO-0.262×P+0.185×S；
A28＝-57.703+1.012×aCaO-0.399×P+0.344×S；
Wherein:
aCaO represents the available CaO content of the schreyerite slag powder;
P represents the substitution amount of the vanadium-titanium ore slag powder for replacing the common slag powder, and the mass percent is calculated;
s represents the specific surface area of the vanadium-titanium ore slag powder;
a7 represents an activity index of mineral powder in 7 days;
A28 represents the 28-day activity index of the ore fines.
Based on the establishment of the quantitative relationship, the invention further researches the application range of each index in the quantitative relationship.
Research results show that in the quantitative relation, the total TiO 2 content in the vanadium-titanium slag powder can meet the requirement of automatic batching without exceeding 20% by mass.
In addition, the specific surface area of the schreyerite slag powder is at least 400m 2/kg or more so as to meet the requirements of automatic batching and mineral powder activity level; meanwhile, research shows that the activity grade of the obtained mineral powder is higher along with the larger specific surface area, but the energy consumption and cost of raw material grinding are also improved, so that the specific surface area of the schreyerite slag powder is more suitable between 400 and 500m 2/kg by comprehensively considering actual production requirements.
In addition, the slag powder disclosed by the invention can meet the activity technical requirement of S95-grade mineral powder so as to meet the requirement of automatic batching.
In a second aspect, the present invention also provides a further use of the above-described dosing method.
By using the method, the invention can realize the purpose of pre-judging the activity grade of the schreyerite slag powder by using the batching method.
Specifically, by utilizing the quantitative relation between the substitution amount P of the schreyerite slag powder for replacing the slag powder and the activity index A of the mineral powder in the batching method, when the substitution amount is 100%, the calculated corresponding activity grade is the activity grade of the schreyerite slag powder, so that the quality performance of the schreyerite slag powder with different sources and components can be conveniently and effectively predicted.
By using the second method, the invention can realize the purpose of judging the substitution amount of the vanadium-titanium ore slag powder based on the production of the ore powder of the vanadium-titanium ore slag powder.
Specifically, the quantitative relation between CaO content, specific surface area S and substitution quantity P of vanadium titanium slag powder for substituting slag powder and activity index A of mineral powder in the batching method is utilized to calculate the substitution quantity corresponding to the preset target activity grade, and smaller numerical values are used as the proper substitution quantity of vanadium titanium slag powder, so that proper vanadium titanium slag doping quantity can be selected rapidly to produce mineral powder meeting the requirements of different performance grades.
It should be noted that, when preparing concrete mineral powder, two active indexes A7 and a28 are required to be satisfied at the same time, so that the smaller value of the two values obtained according to the quantitative relation is used as a substitute, and the prepared mineral powder can satisfy the preset requirement.
By using the third method, the invention can realize the purpose of prejudging the activity grade of mineral powder produced based on the schreyerite slag powder.
Specifically, by utilizing the quantitative relation between the CaO content, the specific surface area S and the substitution quantity P of the vanadium-titanium ore slag powder for substituting the ore slag powder and the activity index A of the ore powder in the batching method, the activity grade of the ore powder of the product corresponding to the preset substitution quantity can be calculated.
The beneficial effects of the invention are as follows:
The batching method can be used for conveniently and effectively predicting the quality performance of the vanadium-titanium slag powder with different sources and components, and can be used for batching to produce mineral powder meeting the requirements of different performance grades by quickly selecting proper doping amount of the vanadium-titanium slag powder, so that the workload of performing multiple tests and the waiting time for 28d mechanical property detection after the traditional method is used for obtaining certain vanadium-titanium slag are saved, the consumption of personnel and material resources in the process of batching the vanadium-titanium slag to produce the mineral powder are obviously saved, the timeliness of mineral powder production is improved, the problem of shortage of supply of high-quality raw materials is solved, and a scientific guiding method is provided for the large-scale application of the vanadium-titanium slag production mineral powder in concrete.
The invention can prejudge the activity grade of the prepared mineral powder by utilizing the established quantitative relation and adjusting the substitution amount of the vanadium-titanium ore slag for replacing the common slag; meanwhile, the proper substitution quantity for producing different grades of mineral powder by the actual vanadium-titanium ore slag ingredients can be obtained through designing the mineral powder with the required activity grade.
The effectiveness of the batching method is proved by practical production and application, the quality performance of vanadium-titanium slag with different sources and components can be conveniently and efficiently prejudged, the rapid and accurate batching of the ore powder with different performance grades prepared by the vanadium-titanium slag powder is realized, the practical application value is realized, the application range is wide, and the recycling utilization rate of the vanadium-titanium slag in building materials is effectively improved.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the following examples of the present invention, the chemical compositions and basic physical properties of the common slag powder and the schreyerite slag powder used are shown in Table 1.
TABLE 1
In the following examples, all proportions are by mass unless otherwise specified.
Example 1
The embodiment provides a method for preparing mineral powder by using different amounts of vanadium titanium ore slag powder A to replace common slag, which comprises the following steps:
(1) The available CaO content was calculated from the chemical composition data in table 1:
Available CaO content = total CaO content in primary slag-1.12 x total TiO 2 content in primary slag = 26.83%
(2) The substitution amount of the vanadium titanium slag powder A for replacing the common slag powder is 20%, 50% and 80%, and the activity grade of the prepared mineral powder is pre-judged according to the specific surface area and the available CaO content of the vanadium titanium slag powder A in the table 1 and the established relation model, namely the reachable 7-day activity index (A7) and 28-day activity index (A28) respectively.
When the vanadium-titanium ore slag powder A is replaced by 20 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝71％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝106％
When the vanadium-titanium ore slag powder A is replaced by 50 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝64％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝94％
When the vanadium-titanium ore slag powder A is replaced by 80 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝56％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝82％
Example 2
The embodiment provides a method for preparing mineral powder by using different amounts of vanadium titanium ore slag powder B to replace common slag, which comprises the following steps:
(1) The available CaO content was calculated from the chemical composition data in table 1:
available CaO content = total CaO content in primary slag-1.12 x total TiO 2 content in primary slag = 28.61%
(2) The substitution amount of the vanadium titanium slag powder B for replacing the common slag powder is 20 percent, 40 percent and 60 percent respectively, and the activity grade of the prepared mineral powder is prejudged according to the specific surface area and the available CaO content of the vanadium titanium slag powder B in the table 1 and the established relation model and respectively calculated to reach 7-day activity index (A7) and 28-day activity index (A28).
When the vanadium-titanium ore slag powder B is replaced by 20 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝70％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝103％
When the vanadium-titanium ore slag powder B is replaced by 40 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝65％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝95％
When the vanadium-titanium ore slag powder B is replaced by 60 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝60％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝87％
Example 3
The embodiment provides a method for preparing mineral powder by using different amounts of vanadium titanium ore slag powder C to replace common slag, which comprises the following steps:
(1) The available CaO content was calculated from the chemical composition data in table 1:
Available CaO content = total CaO content in primary slag-1.12 x total TiO 2 content in primary slag = 16.74%
(2) The substitution amount of the vanadium titanium slag powder C for replacing the common slag powder is 20%, 40% and 60%, and the activity grade of the prepared mineral powder is pre-judged according to the specific surface area and the available CaO content of the vanadium titanium slag powder C in the table 1 and the established relation model, namely the reachable 7-day activity index (A7) and 28-day activity index (A28) respectively.
When the vanadium-titanium ore slag powder C is replaced by 20 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝62％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝91％
When the vanadium-titanium ore slag powder C is replaced by 40 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝57％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝83％
When the vanadium-titanium ore slag powder C is replaced by 60 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝52％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝75％
Example 4
The embodiment provides a method for preparing mineral powder by using different amounts of vanadium titanium ore slag powder A to replace common slag, which comprises the following steps:
(1) The available CaO content was calculated from the chemical composition data in table 1:
Available CaO content = total CaO content in primary slag-1.12 x total TiO 2 content in primary slag = 27.95%
(2) The substitution amount of the vanadium titanium slag powder D for replacing the common slag powder is 30 percent, 50 percent and 80 percent respectively, and the activity grade of the prepared mineral powder is prejudged according to the specific surface area and the available CaO content of the vanadium titanium slag powder D in the table 1 and the established relation model and respectively calculated to reach 7-day activity index (A7) and 28-day activity index (A28).
When the vanadium-titanium ore slag powder D is replaced by 30 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝71％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝107％
When the vanadium-titanium ore slag powder D is replaced by 50 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝66％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝99％
When the vanadium-titanium ore slag powder D is replaced by 80 percent,
A7＝-18.620+0.649×(aCaO)-0.262×(P)+0.185×(S)＝58％
A28＝-57.703+1.012×(aCaO)-0.399×(P)+0.344×(S)＝87％
Verification result:
each of the powders prepared in examples 1 to 4 above was subjected to a performance test.
The powder activity index was tested according to the test method prescribed by GBT18046-2017 for granulated blast furnace slag powder in cement, mortar and concrete, and the actual test results were compared with the prediction results obtained based on the model relationship, and the results are shown in table 2.
TABLE 2
As can be seen from Table 2, in examples 1 to 4, when the automatic burden method for producing ore powder based on the component characteristics of the schreyerite slag is used for producing ore powder by using the schreyerite slag to replace common slag burden, the experimental measured activity indexes of the ore powder prepared by different schreyerite slag are very close to the activity indexes predicted by the relation between the A7 model and the A28 model, the errors are very small, and the experimental measured activity indexes are consistent with the activity grades of the ore powder of the predicted activity indexes.
For example 1, namely vanadium titanium ore slag powder A, the mineral powder with the activity grade S95 can be prepared when the substitution amount is 20%; when the substitution amount is 50% -80%, the mineral powder meeting the activity grade S75 can be prepared.
For example 2, namely vanadium titanium ore slag powder B, the mineral powder with the activity grade S95 can be prepared when the substitution amount is 20%; when the substitution amount is 40% -60%, the mineral powder meeting the activity grade S75 can be prepared.
For example 3, namely schreyerite slag powder C, when the replacement amount is 20% -40%, mineral powder with the activity grade of S75 can be prepared; when the substitution amount is 60% or more, the activity grade of the mineral powder prepared by using the schreyerite slag powder C is lower than the S75-grade activity requirement.
For example 4, namely schreyerite slag powder D, an activity grade S95 ore powder was formulated at a replacement level of 30%; when the substitution amount is 50% -80%, the mineral powder meeting the activity grade S75 can be prepared.
According to the comparison, based on the relation model established by the method, through actual production and application, the vanadium-titanium slag can replace common slag by different amounts to prepare mineral powder with different activity grades, and the actual measurement results of the mineral powder activity grades are consistent with the model prediction results, so that the effectiveness of the method is proved.
Meanwhile, by utilizing the relation model established by the invention, the activity grade of the vanadium-titanium slag powder can be predicted by adjusting the substitution amount of the vanadium-titanium slag for substituting the common slag to be 100%.
Moreover, by designing the activity grade and the activity index of the required mineral powder, the proper substitution quantity when the mineral powder with the corresponding activity grade is produced by the actual vanadium-titanium ore slag ingredients can be calculated and obtained. According to the preset activity level, two substitution values under the activity level can be calculated by adopting established A7 and A28 model formulas, and under the condition, the smaller value of the substitution values calculated by the activity index for 7 days and the activity index for 28 days is used as the proper substitution amount of the schreyerite slag in actual application, so that the performance level requirement of the mineral powder prepared in actual application is ensured.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. A batching method based on the production of ore powder of vanadium titanium slag powder is characterized in that the quantitative relation between the available CaO content of the vanadium titanium slag powder, the specific surface area S, the substitution amount P of the vanadium titanium slag powder for substituting the ore powder and the activity index A of the ore powder is established by taking the available CaO content of the vanadium titanium slag powder as an index;
the content of the available CaO is as follows: the CaO content which is used as a network modifier to provide activity is remained in the vanadium-titanium ore slag powder after the CaO content corresponding to the calcium ions required for balancing the charges of the five-coordination Ti is removed;
the calculation formula of the available CaO content is as follows:
Available CaO content = total CaO content in schreyerite slag powder-1.12 x total TiO 2 content in schreyerite slag powder;
the quantitative relationship is as follows:
A7＝-18.620+0.649×aCaO-0.262×P+0.185×S；
A28＝-57.703+1.012×aCaO-0.399×P+0.344×S；
Wherein:
aCaO represents the available CaO content of the schreyerite slag powder;
p represents the replacement amount of the schreyerite slag powder for replacing the slag powder, and the mass percent is calculated;
s represents the specific surface area of the vanadium-titanium ore slag powder;
a7 represents an activity index of mineral powder in 7 days;
A28 represents the 28-day activity index of the ore fines.
2. The batching method for ore powder production based on schreyerite slag powder according to claim 1, wherein the total TiO 2 content in the schreyerite slag powder is not more than 20% by mass.
3. The batching method for ore powder production based on schreyerite slag powder according to claim 2, characterized in that the specific surface area of the schreyerite slag powder is above 400m 2/kg.
4. A batching method based on the production of ore fines of the schreyerite slag powder according to claim 3, characterized in that the specific surface area of the schreyerite slag powder is 400-500m 2/kg.
5. A batching method for ore powder production based on schreyerite slag powder according to claim 3, characterized in that the slag powder meets the active technical requirements of S95 grade ore powder.
6. The method for prejudging the activity grade of the schreyerite slag powder is characterized in that the quantitative relation between the substitution amount P of the schreyerite slag powder for replacing the slag powder and the activity index A of the mineral powder in the batching method according to any one of claims 1-5 is utilized, and when the substitution amount is 100%, the corresponding activity grade obtained by calculation is the activity grade of the schreyerite slag powder.
7. A method for judging the substitution amount of vanadium titanium ore slag powder based on the production of ore powder of the vanadium titanium ore slag powder is characterized in that the quantitative relation between the available CaO content of the vanadium titanium ore slag powder, the specific surface area S, the substitution amount P of the vanadium titanium ore slag powder for substituting the ore slag powder and the activity index A of the ore powder is utilized in the batching method according to any one of claims 1-5, the substitution amount corresponding to a preset target activity level is calculated, and a smaller value is used as the proper substitution amount of the vanadium titanium ore slag powder.
8. A method for prejudging the activity level of mineral powder based on the production of vanadium titanium ore slag powder is characterized in that the quantitative relation between the available CaO content of the vanadium titanium ore slag powder, the specific surface area S, the substitution quantity P of the vanadium titanium ore slag powder for replacing the slag powder and the activity index A of the mineral powder in the batching method according to any one of claims 1-5 is utilized to calculate the activity level of the mineral powder of the product corresponding to the preset substitution quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932275.9A CN113704983B (en) | 2021-08-13 | 2021-08-13 | Automatic mineral powder production batching method based on component characteristics of vanadium-titanium ore slag and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932275.9A CN113704983B (en) | 2021-08-13 | 2021-08-13 | Automatic mineral powder production batching method based on component characteristics of vanadium-titanium ore slag and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113704983A CN113704983A (en) | 2021-11-26 |
| CN113704983B true CN113704983B (en) | 2024-06-04 |
Family
ID=78653106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110932275.9A Active CN113704983B (en) | 2021-08-13 | 2021-08-13 | Automatic mineral powder production batching method based on component characteristics of vanadium-titanium ore slag and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113704983B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015205803A (en) * | 2014-04-23 | 2015-11-19 | 宇部興産株式会社 | Blast furnace slag selection method and blast furnace cement production method |
| CN109111140A (en) * | 2018-10-31 | 2019-01-01 | 日照钢铁控股集团有限公司 | A method of high activity slag micropowder is prepared using citric acid waste |
| 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 |
| CN110668717A (en) * | 2019-11-11 | 2020-01-10 | 河北京兰水泥有限公司 | P.O 42.5 cement produced from vanadium-titanium slag powder |
| CN112268795A (en) * | 2020-09-29 | 2021-01-26 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Volcanic ash activity evaluation method suitable for mineral admixture |
| CN112279532A (en) * | 2020-10-16 | 2021-01-29 | 北京建筑材料科学研究总院有限公司 | Mineral admixture and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987866B (en) * | 2019-04-15 | 2020-03-31 | 山东大学 | Method and system for producing low-alkalinity new mineral system sulphoaluminate cement by using steel slag |
-
2021
- 2021-08-13 CN CN202110932275.9A patent/CN113704983B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015205803A (en) * | 2014-04-23 | 2015-11-19 | 宇部興産株式会社 | Blast furnace slag selection method and blast furnace cement production method |
| CN109111140A (en) * | 2018-10-31 | 2019-01-01 | 日照钢铁控股集团有限公司 | A method of high activity slag micropowder is prepared using citric acid waste |
| 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 |
| CN110668717A (en) * | 2019-11-11 | 2020-01-10 | 河北京兰水泥有限公司 | P.O 42.5 cement produced from vanadium-titanium slag powder |
| CN112268795A (en) * | 2020-09-29 | 2021-01-26 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Volcanic ash activity evaluation method suitable for mineral admixture |
| CN112279532A (en) * | 2020-10-16 | 2021-01-29 | 北京建筑材料科学研究总院有限公司 | Mineral admixture and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 矿渣粉在煎茶岭镍矿胶结充填中的应用;周旭;杨陆海;;中国矿山工程;20150620(第03期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113704983A (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chunlin et al. | Possibility of concrete prepared with steel slag as fine and coarse aggregates: A preliminary study | |
| CN103043977B (en) | Superfine slag powder baking-free brick and production method thereof | |
| CN109584973B (en) | Design and preparation method of building waste powder-based ecological type ultrahigh-performance concrete | |
| CN105399349A (en) | High-activity iron and steel slag powder and preparation method thereof | |
| CN114394772A (en) | Ecological cementing material and preparation method thereof | |
| CN107162449A (en) | A kind of cement of highly doped superfined flyash and clinker and preparation method thereof | |
| CN113213797A (en) | Steel slag and slag composite admixture and preparation method and application thereof | |
| Wang | Modelling of the compressive strength development of cement mortar with furnace slag and desulfurization slag from the early strength | |
| Huang et al. | Application of sugar cane bagasse ash as filler in ultra-high performance concrete | |
| Raut et al. | Utilization of phosphogypsum and rice husk to develop sustainable bricks | |
| CN114292081B (en) | Cement-free low-carbon concrete and preparation method thereof | |
| CN102092995A (en) | Concrete material by using tail sand to displace yellow sand and preparation method thereof | |
| CN108178536A (en) | A kind of method that step calcination coal gas slugging prepares cement with little clinker | |
| CN110451826A (en) | A kind of villages and towns in rural areas and cracking resistance concrete 32.5 mixed Portland cements and preparation method thereof | |
| CN113704983B (en) | Automatic mineral powder production batching method based on component characteristics of vanadium-titanium ore slag and application | |
| Yasin Mousavi et al. | Performance of high-strength concrete made with recycled ceramic aggregates (research note) | |
| CN113896445A (en) | Composite steel slag activity excitant and preparation method thereof and steel slag cement | |
| CN101497515B (en) | Method for producing titanium slag wall material brick making | |
| CN110386785A (en) | Cement substitute composition and its preparation method and application | |
| CN102617060A (en) | Kaolin gangue composite powder and application of same in premixed concrete | |
| Mousavi et al. | Performance of high-strength concrete made with recycled ceramic aggregates | |
| CN107522416A (en) | A kind of slag gelling agent and its application | |
| CN108585707B (en) | Iron vitriol slag concrete and preparation method thereof | |
| CN114656204B (en) | Method for designing mixing proportion of ecological ultrahigh-performance concrete containing multi-element material | |
| CN111099864A (en) | Steel slag permeable brick and preparation method thereof |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221118 Address after: 100041 No. 69 Jinding North Road, Beijing, Shijingshan District Applicant after: BEIJING BUILDING MATERIALS ACADEMY OF SCIENCES RESEARCH Address before: 100041 No. 69 Jinding North Road, Beijing, Shijingshan District Applicant before: BEIJING BUILDING MATERIALS ACADEMY OF SCIENCES RESEARCH Applicant before: Beijing University of Technology |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230523 Address after: Room 1416, Building 1, Yuecheng Huafu Community, Luanhe Town, Shuangluan District, Chengde City, Hebei Province, 067102 Applicant after: Chengde Chengjin Environmental Protection Technology Co.,Ltd. Address before: 100041 No. 69 Jinding North Road, Beijing, Shijingshan District Applicant before: BEIJING BUILDING MATERIALS ACADEMY OF SCIENCES RESEARCH |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |