CN107352825A - A kind of tailings of lead-zinc ore exciting agent and its application - Google Patents
A kind of tailings of lead-zinc ore exciting agent and its application Download PDFInfo
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- CN107352825A CN107352825A CN201710463922.XA CN201710463922A CN107352825A CN 107352825 A CN107352825 A CN 107352825A CN 201710463922 A CN201710463922 A CN 201710463922A CN 107352825 A CN107352825 A CN 107352825A
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- Prior art keywords
- tailings
- lead
- exciting agent
- zinc ore
- water reducer
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention discloses a kind of tailings of lead-zinc ore exciting agent and its application.The tailings of lead-zinc ore exciting agent includes blast-furnace cinder, flyash, fluorgypsum and water reducer.Also disclose a kind of application of tailings of lead-zinc ore exciting agent in Pb-Zn deposits packing material is prepared.The exciting agent of the present invention can be in efficient activation tailings of lead-zinc ore amorphous state Silicon-rich aluminum composition, on the basis of presoma is generated, based on flat board calcium layer, the C A S H gels with gelling ability are grown to serve as, so as to effectively using solid waste generation binder materials, reach the purpose that solid waste fills.
Description
Technical field
The present invention relates to a kind of tailings of lead-zinc ore exciting agent and its application.
Background technology
It is several that mine tailing filling experienced barren rock dry stowing, hydraulic filling, tailing cemented filling, tailings high dense fill etc.
The development in stage.Since 60~seventies of 20th century is applied and develops tailing cemented filling technology, cementing filler obtains
Pay attention to and unprecedented development, main cementing material have cement, high water cementing material, red mud cementing material, the alkali-activated carbonatite cementing
Material etc..Its development trend to shorten setting time, low cost, high intensity, easily conveying, easily production, technique is simple etc., and direction is sent out
Exhibition, but cement is still mine engineering and the most widely used binder materials of underground filling.
Filling in mine material is mainly made up of aggregate and cementing agent two parts, and aggregate chooses cheap available thing on the spot mostly
Material, the broken processing of insufficient section sorting nearby, and Portland cement or slag cements are selected in cementing agent overwhelming majority mine,
The materials such as a small amount of mine incorporation flyash, red mud, lime.It is also few for the special cementing material suitable for filling in mine feature
See.Just mainly there are following a few class cementing materials to be applied in filling at present.
(1) cement
At present, the cement used in architectural engineering and mining engineering mainly has portland cement, Portland cement, ore deposit
Slag portland cement, portland-pozzolan cement and Portland fly ash cement etc..Portland cement is still current getter
Most widely used cementing material in journey, but cost height be present, adaptability is not strong, and the ratio of mud and the narrow grade of cement-sand ratio adjustable extent lack
Point.
(2) high-water material
High-moisture quick-setting tailings cemented filling material (abbreviation high-water material) is that research at the beginning of the nineties at the end of the eighties is successfully new
The cementing material of type.High-water material is using bauxite, lime, lime stone and gypsum as primary raw material, is equipped with a variety of inorganic raw materials
With additive etc. by the techniques such as broken, drying, dispensing, homogenizing, firing and grinding, manufactured two kinds of solid powders of first, second.
Have the characteristics that solid water ability is strong, list slurry suspension and mobility are strong, setting rate is fast, gain in strength speed is fast, can be by height
The water quick solidification of ratio is into the solid with certain bearing capacity.It is strong that its volumetric water content may be up to more than 70%, 1h solidifications
Degree has advantage up to 0.5~1.0MPa under conditions of Fast Filling and consolidation is needed.But its filling process is complicated (double
Component), cost height (800 yuan~1000 yuan/ton), obturation has bleed phenomenon, and wide popularization and application has certain limitation.And
Later strength significantly retraction, the easy efflorescence of obturation.
(3) alkali-activated carbonatite cementing material
Such material is aided with inhomogeneity based on independent or compounding blast-furnace cinder, flyash, slag isoreactivity admixture
The alkali-activator of type, additive or (and) a small amount of natural minerals.Without calcination, equipment investment is few, simple production process, production
Cost is relatively low, and economic benefit is obvious, and due to comprehensively utilizing industrial residue, turns waste into wealth.During some filling in mine,
In the case of the cement consumption identical of strength grade 42.5, its early strength can reach more than 2~4 times of cement.Because of mine tailing class
Type is various, and such material excites system not unique, and identical material solidification mine tailing performance difference is larger, it is therefore desirable to pin
Different mine tailings are carried out with dedicated experiments and research to determine the optimal cementing system of cost performance, and swashing in the absence of " putting things right once and for all "
Send out agent prescription.
In addition, the size distribution situation of tailings decides the overall process of filling process, to preparing, conveying and Quality of filling body
It is of great impact.The size distribution of tailings is also referred to as the grading of material, refers to the percentage composition of different-grain diameter particle in granular material.
By taking the tailings of all mouth Pb-Zn deposits as an example, the tailings of lead-zinc ore is mainly distributed on 5 μm~250 μm this sections and accounts for 99%, 200 mesh with
Upper particle accounts for 43%.Compared with the mine tailing of other metal mines, all mouth tailings of lead-zinc ore overall fineness are moderate, fine particle content
It is fewer, it is primarily due to all mouth Pb-Zn deposits and crude tailings classification processing is carried out using cyclone, is classified thick tailings and implements filling, point
The thin tailings of level is all discharged into Tailings Dam.This just needs to carry out system test to tailings feature, researches and develops and cost-effective special swashs
Send out agent.
The content of the invention
It is an object of the invention to provide a kind of tailings of lead-zinc ore exciting agent and its application.
The technical solution used in the present invention is：
A kind of tailings of lead-zinc ore exciting agent, include following components by mass parts：90~110 parts of blast-furnace cinders, 35~45 parts
Flyash, 6~10 parts of fluorgypsums, 0.5~1 part of water reducer.
Blast-furnace cinder is conversion pig slag.
Flyash is I grade or II grade of F class flyash.
Water reducer is lignin sulfonate water reducer, naphthalene water reducer, melamine system water reducer, sulfamate system
At least one of water reducer, fatty acid series water reducer, poly carboxylic acid series water reducer.
A kind of application of tailings of lead-zinc ore exciting agent in Pb-Zn deposits packing material is prepared.
Pb-Zn deposits packing material includes tailings of lead-zinc ore, tailings of lead-zinc ore exciting agent and water.
Tailings of lead-zinc ore exciting agent accounts for the 3~9% of Pb-Zn deposits packing material quality.
The beneficial effects of the invention are as follows：
The exciting agent of the present invention can be in efficient activation tailings of lead-zinc ore amorphous state Silicon-rich aluminum composition, in generation forerunner
On the basis of body, based on flat board calcium layer, the C-A-S-H gels with gelling ability are grown to serve as, so as to effectively using solid
Useless generation binder materials, reach the purpose of solid waste filling.
Embodiment
A kind of tailings of lead-zinc ore exciting agent, include following components by mass parts：90~110 parts of blast-furnace cinders, 35~45 parts
Flyash, 6~10 parts of fluorgypsums, 0.5~1 part of water reducer.
Preferably, a kind of tailings of lead-zinc ore exciting agent, following components is included by mass parts：95~105 parts of blast-furnace cinders, 37
~41 parts of flyash, 7~9 parts of fluorgypsums, 0.6~0.9 part of water reducer.
Preferably, described blast-furnace cinder is conversion pig slag.
Preferably, described flyash is I grade or II grade of F class flyash；It is further preferred that described flyash is I
Level F class flyash.
Preferably, described water reducer is lignin sulfonate water reducer, naphthalene water reducer, melamine series diminishing
Agent, at least one of sulfamate based water reducer, fatty acid series water reducer, poly carboxylic acid series water reducer；It is further preferred that
Described water reducer is at least one of naphthalene water reducer, poly carboxylic acid series water reducer.
A kind of application of tailings of lead-zinc ore exciting agent in Pb-Zn deposits packing material is prepared.
Pb-Zn deposits packing material includes tailings of lead-zinc ore, tailings of lead-zinc ore exciting agent and water.
Tailings of lead-zinc ore exciting agent accounts for the 3~9% of Pb-Zn deposits packing material quality.
Further, tailings of lead-zinc ore includes following components by mass fraction：1%~2%MgO, 7%~8%Al2O3,
21%~25%SiO2, 24%~26%SO3, 1%~2%K2O, 18%~21%CaO, 0.2%~0.4%TiO2, 15%~
18%Fe2O3, 0.3%~0.6%ZnO, 0.5%~1%PbO, surplus is loss on ignition.
Further, in the particle diameter of tailings of lead-zinc ore, 5 μm~50 μm account for 23~24wt%, 50 μm~75 μm account for 19~
20wt%, 75 μm~250 μm account for 55~56wt%.
The tailings exciting agent of the present invention is using industrial residue as main raw material(s), while is aided with activity excitation means, is made
Can High water cut, high fineness Tailings Slurry environment in play exciting agent aquation advantage, realize the sustainable growth of intensity.
There is the Microphase Separation structure of two-phase, Al-O keys are than key of the Si-O key than Si-O key wherein in vitreum in exciting agent
Strong small, the agent that is easily excited dissolving is scattered, when A1 ligancy is 6, the key of alumina octahedral is strong smaller, about Si-O keys
50% or so, activity is higher, when levigate waste residue and certain density OH-During contact, aluminum-oxygen tetrahedron is first with alumina octahedral
It is dissolved in silicon-oxy tetrahedron scattered.In addition, Mg2+It is distributed in the hole of vitreum network structure, forms uneven thing phase, add
The disordering arrangement of crystallite phase in acute vitreum, be advantageous to the aquation of waste residue.Rich calcium phase occupies the majority in the industrial residue, for even
Continuous phase, discrete Si-rich phase is wrapped in the structure for wherein constituting its vitreum by it.Rich calcium phase has higher than Si-rich phase
Thermodynamic phase, while rich calcium phase has certain dynamic stability again, is allowed to destroy must pull against certain work
Change energy.In alkaline environment, OH-Effect can overcome the decomposition activation energy of rich calcium phase, make the rapid aquation of rich calcium phase and disintegration,
Waste residue vitreous structure is caused to destroy；Si-rich phase is then progressively exposed in alkaline medium, and occur more slow aquation and
Decompose.The hydrated product hydrated calcium silicate (C-S-H) of rich calcium phase and Si-rich phase is constantly formed and grown up, and makes the structure of hydrated product
Constantly enhancing, show as binder materials early stage low strength and later strength constantly increases.
The industrial residue that above-mentioned discussion is simply indicated in exciting agent forms bonding component aquation silicic acid in the case where alkalescence acts on
The process of calcium (C-S-H), the C-S-H parcel tailings particles of generation form a part of strength of filling mass.If only rely on obturation
In gelling material, obturation short texture, low strength.If expansion component entringite can be introduced in obturation
(Ca6Al2(SO4)3(OH)12·26H2O, AFt) interstitital texture hole, tailings particles are extruded, obturation porosity can be reduced,
When bonding component and expansion component are coordinated to be formed, obturation can be made to be in optimum structure, intensity is optimal.
Present disclosure is described in further detail below by way of specific embodiment.
Embodiment：
Carry out following filling application in all mouth Pb-Zn deposits.
Tailings of lead-zinc ore used below, after testing, it includes following components by mass fraction：1.49%MgO, 7.97%
Al2O3, 23.28%SiO2, 25.95%SO3, 1.47%K2O, 19.28%CaO, 0.28%TiO2, 16.42%Fe2O3, 0.45%
ZnO, 0.84%PbO, 2.178% loss on ignition.In particle diameter, 5 μm~50 μm account for 23.64wt%, and 50 μm~75 μm account for
19.21wt%, 75 μm~250 μm account for 55.76wt%.
First, filler and filling stope prepare
1st, filler prepares：Filling Station cement bin is emptied, and exciting agent is directly taken Filling Station.It can not such as empty,
Loading time is then calculated according to charging quantity, 20min is filled using exciting agent first, to ensure filling during experiment process sampling
The all exciting agents of the invention of filling chock material.
The composition of the exciting agent is 102 parts of blast-furnace cinders (conversion pig slag), 39 parts of I grade of F class flyash, 8.25 parts
Fluorgypsum, 0.75 part of naphthalene water reducer.
2nd, the 308 and 606-1 stopes for being selected in all mouth mining areas carry out pilot scale filling.
2nd, fill cement-sand ratio and test specimen prepares
1st, according to mining production requirement, in the bottoming of stope, middle part, the optional waterproof mortar in different cement-sand such as top position are connect
(mass ratio of tailings of lead-zinc ore exciting agent and tailings of lead-zinc ore) is filled.In application process, control system is filled by adjusting
System, filling cement-sand ratio is according to 1:12,1:14,1:16 and 1:18 grades four proportioning carries out filling sampling.
2nd, Filling density (solid content of tailings of lead-zinc ore exciting agent and tailings of lead-zinc ore) and cement-sand ratio see the table below 1.
The Filling density of table 1 and cement-sand ratio
3rd, in stowing operation, the mobile performance of Tailings Slurry in the case of waterproof mortar in different cement-sand is paid close attention to, it is ensured that filler and cement
Compared to the mobility for not interfering with Tailings Slurry.
When the 4th, filling, in the case of every kind of cement-sand ratio, 4 groups of examinations are reserved using 70.7*70.7*70.7mm mould in Filling Station
Part, the compression strength of 7 days and 28 days is determined respectively.
3rd, test piece maintenance and strength test
1st, Filling Station test piece maintenance condition considers according to following two situations, and Hangzhoupro Compressive Strength test is carried out in corresponding age.
(1) 20 ± 2 DEG C of temperature, relative humidity is not less than 60%, to simulate Underground filler ambient temperature and humidity requirement.
(2) Filling Station shaping test piece is directly taken underground cured under same condition.
2nd, predetermined age is reached, testing crew is gone into the well to filling stope, and core boring sampling, measure filling are carried out in obturation
The solid strength of body.
3rd, Filling Station keeps sample test specimen and obturation core boring sampling test specimen directly can be detected or entrusted in Filling Station laboratory
Unit of the support with corresponding qualification is detected.
4th, method for testing and detecting and product strength standard
1st, test method
(1) quantitative Tailings Slurry and filler are put into mixer by waterproof mortar in different cement-sand and mix slowly 60s；
(2) gauge water is mixed, slurry is configured to various concentrations, quickly stirs 90s；
(3) after pot wall surrounding slurry is scraped in pot, it is stirred for 30s；
(4) solidification sample is put into steel die trial in three times；
(5) sample is molded to after losing plasticity and is stripped, and for actual environment of the simulation underground with respect to constant temperature and humidity, is stripped sample
It is positioned over maintenance to test age in standard curing room and carries out intensity and volume stability experiment.
2nd, intensity detection
Intensity after tailings solidification is much lower compared with cement and concrete, it is therefore necessary to is determined using small-range forcing press
Solidify sample different larval instar single shaft Hangzhoupro Compressive Strength, compression rate 3mm/min.
Obturation test block single shaft Hangzhoupro Compressive Strength calculation formula：σ=P/A
In formula：σ is two obturation test block single shaft Hangzhoupro Compressive Strengths, and MPa-calculating takes three effective digitals；P destroys for test block
Maximum load, N；A be two perpendicular to loading direction test block area, mm2。
Test age is respectively 7 days and 28 days.
5th, using test result
The strength test results that scene connects slurry are as shown in table 2 below.
The scene of table 2 connects the strength test results of slurry
Laboratory carries out cement and exciting agent intensity detection to field test by proportioning in ore deposit simultaneously, as a result as shown in table 3.
Craft same period test result in laboratory in the ore deposit of table 3
Using the charging formula low strength of cement, in actual use, even if 1:8 cement-sand ratio, 28d intensity are still below
Exciting agent 1:18；Cement-sand ratio adjustability is weak, and intensity declines obvious under low cement-sand ratio.And exciting agent can flow ensuring slurry
Meet the varying strength requirement of obturation on the premise of property, 1:8~1:During 18 cement-sand ratio, under the same terms, using exciting agent
Sample 28d intensity is about cement solidification tailings more than 2 times, reaches binder materials used in same intensity level and is reduced about than cement
50%.
Claims (7)
- A kind of 1. tailings of lead-zinc ore exciting agent, it is characterised in that：Include following components by mass parts：90~110 parts of blast-furnace cinders, 35~45 parts of flyash, 6~10 parts of fluorgypsums, 0.5~1 part of water reducer.
- A kind of 2. tailings of lead-zinc ore exciting agent according to claim 1, it is characterised in that：Blast-furnace cinder is conversion pig ore deposit Slag.
- A kind of 3. tailings of lead-zinc ore exciting agent according to claim 1, it is characterised in that：Flyash is I grade or II grade of F class Flyash.
- A kind of 4. tailings of lead-zinc ore exciting agent according to claim 1, it is characterised in that：Water reducer is lignosulfonates Class water reducer, naphthalene water reducer, melamine system water reducer, sulfamate based water reducer, fatty acid series water reducer, polycarboxylic acids At least one of based water reducer.
- A kind of 5. application of tailings of lead-zinc ore exciting agent in Pb-Zn deposits packing material is prepared described in claim 1.
- 6. application according to claim 5, it is characterised in that：Pb-Zn deposits packing material includes tailings of lead-zinc ore, Pb-Zn deposits Tailings exciting agent and water.
- 7. application according to claim 6, it is characterised in that：Tailings of lead-zinc ore exciting agent accounts for Pb-Zn deposits packing material quality 3~9%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393121A (en) * | 2020-05-02 | 2020-07-10 | 桂林理工大学 | Method for preparing aerated concrete from lead-zinc ore smelting slag-steel slag |
| CN115215588A (en) * | 2022-06-09 | 2022-10-21 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Filling material and preparation method thereof |
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| CN103102089A (en) * | 2013-01-30 | 2013-05-15 | 中钢集团马鞍山矿山研究院有限公司 | Binding material for filling fine-grain tailings |
| CN103342481A (en) * | 2013-07-08 | 2013-10-09 | 武汉理工大学 | Mine filling cementing material slurry and preparation method thereof |
| CN103613294A (en) * | 2013-12-05 | 2014-03-05 | 王宗森 | Cementing material for underground filling and preparation method thereof |
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Patent Citations (4)
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| US20020000179A1 (en) * | 2000-02-08 | 2002-01-03 | Mehta Povindar K. | Method for producing a blended cementitious composition |
| CN103102089A (en) * | 2013-01-30 | 2013-05-15 | 中钢集团马鞍山矿山研究院有限公司 | Binding material for filling fine-grain tailings |
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| CN103613294A (en) * | 2013-12-05 | 2014-03-05 | 王宗森 | Cementing material for underground filling and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393121A (en) * | 2020-05-02 | 2020-07-10 | 桂林理工大学 | Method for preparing aerated concrete from lead-zinc ore smelting slag-steel slag |
| CN115215588A (en) * | 2022-06-09 | 2022-10-21 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Filling material and preparation method thereof |
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