CN113121140A - Method for preparing active admixture of color sand, roadbed stone and cement from molybdenum ore tailings - Google Patents
Method for preparing active admixture of color sand, roadbed stone and cement from molybdenum ore tailings Download PDFInfo
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- CN113121140A CN113121140A CN202110251727.7A CN202110251727A CN113121140A CN 113121140 A CN113121140 A CN 113121140A CN 202110251727 A CN202110251727 A CN 202110251727A CN 113121140 A CN113121140 A CN 113121140A
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- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 40
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000011733 molybdenum Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000004575 stone Substances 0.000 title claims abstract description 31
- 239000004568 cement Substances 0.000 title claims abstract description 29
- 239000004576 sand Substances 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012065 filter cake Substances 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000011449 brick Substances 0.000 claims abstract description 11
- 230000004913 activation Effects 0.000 claims abstract description 9
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 8
- 239000011398 Portland cement Substances 0.000 claims abstract description 7
- 238000004064 recycling Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 4
- 230000000536 complexating effect Effects 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 5
- 230000008901 benefit Effects 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000001273 butane Substances 0.000 abstract 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 235000010755 mineral Nutrition 0.000 description 5
- 239000004566 building material Substances 0.000 description 4
- 238000005188 flotation Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 231100000701 toxic element Toxicity 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000167847 Koelreuteria paniculata Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910052656 albite Inorganic materials 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1059—Pigments or precursors thereof
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The method for preparing the active admixture of the colored sand, the roadbed stone and the cement by using the molybdenum ore tailings comprises the following specific steps: preparing molybdenum ore tailings into ore pulp by using water, conveying the ore pulp from a tailing pond to a production workshop by using a pipeline, and performing multi-stage screening on the ore pulp to obtain first ore pulp, second ore pulp, third ore pulp and fifth ore pulp; filtering the first ore pulp, the second ore pulp and the third ore pulp, producing color sand by using filter cakes, and recycling filtrate; filtering the butane pulp, and conveying a filter cake to a roadbed stone production line to produce a roadbed stone; performing solid-liquid separation on the pentane pulp, sending a filter cake to an activation furnace for activation to produce a cement active admixture, and recycling the filtrate after treatment; and adding ordinary portland cement, a reinforcing agent, glass fiber and a cement active admixture into the filtered solid filter cake, and uniformly mixing to produce the roadbed stone and the roadbed brick. The method has the advantages of small equipment investment, simple process, low cost, high added value, no secondary pollution, obvious resource effect, easy large-scale disposal and better environmental benefit and economic benefit.
Description
Technical Field
The invention belongs to the technical field of solid waste recycling treatment, and particularly relates to a method for preparing active admixtures of colored sand, roadbed stone and cement from molybdenum ore tailings.
Background
The Koelreuteria paniculata in Luoyang is called as Mo city, which is an oversize Mo ore field in China. However, with the large-scale exploitation of molybdenum ore, the tailings of molybdenum ore are more and more. At present, the fine tailings are not effectively utilized, not only occupy a large amount of land and have high disposal cost, but also have potential environmental and safety hazards.
The known comprehensive utilization routes of the molybdenum ore tailings include four routes: (1) and (3) reselecting useful mineral aggregates after tailing stoping: under the influence of early lagging mineral separation processes and mineral separation methods, various valuable mineral aggregates still exist in the tailings, so that the useful mineral aggregates re-separated from the tailings in the tailings pond after the recovery can bring certain economic benefits to enterprises, but the re-separation or re-separation mode still generates solid wastes and brings secondary environmental pollution; (2) the tailings are used as building materials: a plurality of tailings experimental researches show that the tailings rich in calcium and silicon can replace clay containing the same calcium and silicon after being calcined to be used as a raw material of portland cement, the tailings portland cement with excellent quality can be calcined, the performance is good, the coagulation and the stability are normal, but the tailings portland cement is limited by the region of cement clinker manufacturers, the transportation cost is too high, and in addition, the general trend of large energy consuming enterprises to the productive countries and the environmental protection are stricter, a large number of cement clinker manufacturers are closed, and the roads for producing the cement by the tailings are limited; (3) and (3) using the tailings for preparing fertilizer: some tailings contain various trace elements such as Zn, Mn, Cu, Mo, V, B and the like required by plant production, the elements are necessary for maintaining the growth and development of plants, and the trace element fertilizers for improving the soil can be prepared by proper treatment, the method seems to be feasible, but has no practical operation possibility, because various flotation reagents and other toxic substances cannot be prevented from being adsorbed in the tailings, and only the pretreatment cost is irreparable; (4) filling a mine goaf: the method conforms to the long-term continuous development of green mine development and mining industry, but is not practical because the ores are dug from the mountain and are transported to a dressing plant, few enterprises are used for mining and dressing together, even if the mining and dressing are carried out together, and the goaf is backfilled by tailings, so that the economic benefit is low, and the enterprises are difficult to realize.
ICP (inductively coupled plasma) element analysis is carried out on molybdenum ore tailings in Koelkawa county, so that radioactive elements do not exist in the molybdenum ore tailings, the contents of heavy metals which have high environmental pollution are low, wherein the contents of As (0.00025%), Pb (0.0015%) and Cr (chromium), Cd (cadmium) and Hg (Hg) are too low to detect. In addition, the loss on ignition is not high, only 1.56%, which indicates that the content of organic matters in the molybdenum tailings is low, and the content of flotation agents carried into the tailings is low. Importantly, the molybdenum ore tailings with seven components of silicon dioxide, aluminum oxide, ferric oxide, potassium feldspar, albite, calcium oxide and magnesium oxide account for 98.09 percent and are safe and reliable to use as building material raw materials. Therefore, the tailings are used as raw materials, and the zero-emission full-recovery innovative technology and process are adopted, so that the tailings are recycled and comprehensively utilized, and the method has great practical significance and scientific significance.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a method for preparing an active admixture of colored sand, roadbed stone and cement from molybdenum ore tailings without a process method for discharging three wastes.
The technical scheme of the invention is as follows: the method for preparing the active admixture of the colored sand, the roadbed stone and the cement by using the molybdenum ore tailings comprises the following specific steps:
step one, molybdenum ore tailings are prepared into ore pulp by water, the ore pulp is subjected to multi-stage screening treatment by a probability screen, and the ore pulp of the tailings is screened into first ore pulp, second ore pulp, third ore pulp and fifth ore pulp;
step two, filtering the first ore pulp, the second ore pulp and the third ore pulp respectively, performing solid-liquid separation to obtain three solid filter cakes which are respectively used for producing colored sand with corresponding specifications, and sending filtrate to a water treatment pool for complexing treatment;
step three, carrying out solid-liquid separation on the butyl ore pulp by using a belt type vacuum filter, directly using a solid filter cake for producing the roadbed stone, and sending filtrate to a water treatment pool for complexing treatment;
step four, performing solid-liquid separation on the pentane ore pulp by using a spiral centrifugal machine, conveying a solid filter cake to an activation furnace for activation treatment to obtain a cement active admixture, and treating liquid water for recycling;
and step five, adding 12-30% of ordinary portland cement, 0.05-0.6% of reinforcing agent, 0.5-3% of glass fiber and 5-10% of cement active admixture into the solid filter cake filtered in the step three, uniformly mixing, and producing one of roadbed stone and roadbed brick by adopting a full-automatic brick/stone all-in-one machine.
And further optimizing, wherein a vibration probability sieve is adopted in the screening treatment in the step one.
And (3) further optimizing, wherein the multistage screening treatment in the step one adopts a vibration probability screen.
Further optimizing, the granularity of the first ore pulp is 20-40 meshes, the granularity of the second ore pulp is 41-80 meshes, the granularity of the third ore pulp is 81-120 meshes, the granularity of the third ore pulp is 121-325 meshes, and the granularity of the fifth ore pulp is smaller than 325 meshes.
Further optimization, the concentration of the ore pulp in the step one is 40-60%.
And (3) further optimizing, wherein the colored sand in the second step is dyed colored sand.
And further optimizing, wherein the molybdenum ore tailings in the roadbed stones and the roadbed bricks in the third step account for 40-88%.
And further optimizing, wherein the molybdenum ore tailings in the cement active admixture in the fourth step account for 85-98%.
The invention has the beneficial effects that:
through analysis and test, the molybdenum ore tailings have no radioactive elements, the total content of toxic elements such as lead, mercury, arsenic, cadmium and the like is not more than 0.002 percent, the molybdenum ore tailings can be used as building materials, the loss on ignition is 1.56 percent, the molybdenum ore tailings are added with organic flotation reagents due to flotation, the organic flotation reagents are very low in content and are easy to dissolve in water, water is adopted as a medium for solid-liquid phase transportation in the process, organic matters exist in liquid phase water, a water treatment tank is subjected to complexing treatment and then recycled, the whole process has no carbon consumption and three-waste discharge, the tailings are fully recycled by 100 percent, and the method has the advantages of small equipment investment, simple process, low cost, high added value, no secondary pollution, remarkable recycling effect, easiness in large-scale disposal and better environmental benefit and economic benefit.
Detailed Description
In order to make the technical means, the original characteristics, the achieved objects and the beneficial effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
The method for preparing the active admixture of the colored sand, the roadbed stone and the cement by using the molybdenum ore tailings comprises the following specific steps:
step one, molybdenum ore tailings are modulated into ore pulp with the concentration of 40-60% by water, the ore pulp is subjected to multi-stage screening treatment by using a vibrating probability screening probability screen, and the ore pulp of the tailings is screened into first ore pulp, second ore pulp, third ore pulp and fifth ore pulp, wherein the granularity of the first ore pulp is 20-40 meshes, the granularity of the second ore pulp is 41-80 meshes, the granularity of the third ore pulp is 81-120 meshes, the granularity of the third ore pulp is 121-325 meshes, and the granularity of the fifth ore pulp is smaller than 325 meshes;
step two, filtering the pulp A, the pulp B and the pulp C respectively, performing solid-liquid separation, obtaining three solid filter cakes which are respectively used for producing dyeing color sand with corresponding specifications, sending filtrate to a water treatment pool for complexing treatment, wherein the adding amount of a coloring agent is 0.5-2%, preparing the three solid filter cakes by using water, in the production process of the dyeing color sand, selecting low-melting-point glass powder or low-melting-point oxide as a glaze coating, the adding amount of a pigment is 0.3-8%, selecting inorganic pigments such as titanium dioxide, ferric oxide, zinc yellow, chromium oxide, ultramarine and the like as the pigments, selecting 10-40% of glaze, 2-15% of pigment, sintering temperature is less than 500 ℃, and crushing and sieving the glaze into different meshes after sintering;
step three, performing solid-liquid separation on the butyl pulp by using a belt type vacuum filter, directly using a solid filter cake for producing the roadbed stone, and sending filtrate to a water treatment tank for complexing treatment, wherein the molybdenum ore tailings in the roadbed stone and the roadbed brick account for 40-88%;
step four, performing solid-liquid separation on the pentane pulp by using a spiral centrifuge, conveying the solid filter cake to an activation furnace for activation treatment to obtain a cement active admixture, wherein the activation temperature is 300-600 ℃, the activator comprises quicklime and gypsum, the addition of the quicklime is 0.2-15%, the addition of the gypsum is 3-20%, and liquid water is recycled after treatment, wherein the molybdenum ore tailings in the cement active admixture account for 85-98%;
and step five, adding 12-30% of ordinary portland cement, 0.05-0.6% of reinforcing agent, 0.5-3% of glass fiber and 5-10% of cement active admixture in the step four into the solid filter cake filtered in the step three, uniformly mixing, and producing one of roadbed stone and roadbed brick by adopting a silver horse 2025 brand full-automatic brick/stone all-in-one machine.
Taking a running pilot plant production line as an example, 300 tons of molybdenum ore tailings are processed daily, the working time per day is 8 hours, 4 thick slurry pumps are conveyed by pipelines with the motor power of 1.0KW, 2 vibrating probability sieves with the motor power of 3.5KW are arranged, 1 filter and a press are arranged respectively, wherein the power of each motor is 7.5KW/h, the total power consumption of a JS600-PC300 system roadbed stone and roadbed brick production line is 65KW/h, the average power consumption per day is 810 degrees, the average power consumption of each ton of molybdenum ore tailings is 2.7 degrees, and the product data can be obtained every day: 60 tons of color sand with the size of 600 multiplied by 35mm35000 pieces of roadbed stone, 120 tons of cement active admixture and 43 ten thousand yuan of daily income. Through analysis and test, the molybdenum ore tailings do not contain radioactive elements, the total content of toxic elements such as lead, mercury, arsenic, cadmium and the like is not more than 0.002 percent, and the molybdenum ore tailings can be used as building materials. The process method for treating the molybdenum ore tailings with the loss on ignition of 1.56 percent has the advantages of low energy consumption, low cost, zero discharge and full recovery, remarkable economic benefit and good social benefit and environmental benefit.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The method for preparing the active admixture of the colored sand, the roadbed stone and the cement from the molybdenum ore tailings is characterized by comprising the following specific steps of:
step one, molybdenum ore tailings are prepared into ore pulp by water, the ore pulp is subjected to multi-stage screening treatment by a probability screen, and the ore pulp of the tailings is screened into first ore pulp, second ore pulp, third ore pulp and fifth ore pulp;
step two, filtering the first ore pulp, the second ore pulp and the third ore pulp respectively, performing solid-liquid separation to obtain three solid filter cakes which are respectively used for producing colored sand with corresponding specifications, and sending filtrate to a water treatment pool for complexing treatment;
step three, carrying out solid-liquid separation on the butyl ore pulp by using a belt type vacuum filter, directly using a solid filter cake for producing the roadbed stone, and sending filtrate to a water treatment pool for complexing treatment;
step four, performing solid-liquid separation on the pentane ore pulp by using a spiral centrifugal machine, conveying a solid filter cake to an activation furnace for activation treatment to obtain a cement active admixture, and treating liquid water for recycling;
and step five, adding 12-30% of ordinary portland cement, 0.05-0.6% of reinforcing agent, 0.5-3% of glass fiber and 5-10% of cement active admixture into the solid filter cake filtered in the step three, uniformly mixing, and producing one of roadbed stone and roadbed brick by adopting a full-automatic brick/stone all-in-one machine.
2. The method for preparing color sand, roadbed stone and cement active admixture from molybdenum ore tailings according to claim 1, wherein the screening treatment in the first step is a vibration probability screen.
3. The method for preparing the color sand, the roadbed stone and the cement active admixture from the molybdenum ore tailings according to the claim 1, wherein a vibration probability sieve is adopted in the multi-stage sieving treatment in the step one.
4. The method as claimed in claim 1, wherein the first ore pulp has a particle size of 20-40 meshes, the second ore pulp has a particle size of 41-80 meshes, the third ore pulp has a particle size of 81-120 meshes, the third ore pulp has a particle size of 121-325 meshes, and the fifth ore pulp has a particle size of less than 325 meshes.
5. The method for preparing the active admixture of the colored sand, the roadbed stone and the cement by using the molybdenum ore tailings as the raw materials according to claim 1, wherein the concentration of the ore pulp in the step one is 40-60%.
6. The method for preparing the color sand, the roadbed stone and the cement active admixture from the molybdenum ore tailings according to claim 1, wherein the color sand in the second step is dyed color sand.
7. The method for preparing color sand, roadbed stone and cement active admixture by using molybdenum ore tailings according to claim 1, wherein the molybdenum ore tailings in the roadbed stone and the roadbed brick account for 40-88% in the third step.
8. The method for preparing color sand, roadbed stone and cement active admixture by using molybdenum ore tailings according to claim 1, wherein the molybdenum ore tailings in the cement active admixture in the fourth step account for 85-98%.
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| CN114538860A (en) * | 2022-03-25 | 2022-05-27 | 沈阳中泽环境工程有限公司 | Border stone prepared from molybdenum-selecting tailings and preparation method thereof |
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