CN110372309A - A kind of titanium gypsum sill and preparation method thereof for goaf filling - Google Patents
A kind of titanium gypsum sill and preparation method thereof for goaf filling Download PDFInfo
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- CN110372309A CN110372309A CN201910688988.8A CN201910688988A CN110372309A CN 110372309 A CN110372309 A CN 110372309A CN 201910688988 A CN201910688988 A CN 201910688988A CN 110372309 A CN110372309 A CN 110372309A
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- titanium gypsum
- sill
- titanium
- gypsum
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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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of titanium gypsum sills and preparation method thereof for goaf filling, the titanium gypsum sill for goaf filling in the present invention is using the titanium gypsum after calcining ageing as primary raw material, the ingredients such as a small amount of portland cement, desulfurized gypsum, flyash are added, can be completed by mixing, molding, demoulding.Titanium gypsum sill makes full use of solid waste material in the present invention, reduces the use cost of filler material, and the material flowability, workability are good, and convenient for construction, final setting time shortens relative to cement-based material, reduces the filling time.
Description
Technical field
The present invention relates to a kind of titanium gypsum sills and preparation method thereof for goaf filling, belong to chemical materials neck
Domain.
Background technique
After some exploitations of mineral resources such as gold mine, coal mine, biggish hole area is left in underground, goaf is idle in long-time
The danger that roof strata slump can be caused later, causes collapsing for earth's surface, seriously affects earth's surface farmland, building, what is more
Influence whether the normal life of resident.Cement-based material is mainly used to the filling in goaf at present, it after filling can be effective
Alleviate the danger of hole area slump, but using cement is that main material is used for goaf, just final setting time is relatively long for cement,
It is unfavorable for the rapid completion of entire infilling work；Cement has certain shrinkage after solidification simultaneously, this has been unfavorable for
The gap in whole filling goaf, the additional raising that will lead to entire filling cost using cement material filling, waste are more
Resource.Therefore, explore a kind of taking novel filling material applied to goaf very it is necessary to.
Titanium gypsum is a kind of based on dihydrate gypsum caused by lime stone treatment of acidic wastewater when being production titanium dioxide
Waste residue, the outdoor heap of titanium gypsum can not only occupy a large amount of land resource, but also its acid ingredient meeting in long-term stack for containing
Serious pollution is caused to ambient enviroment and underground water.Every one ton of titanium dioxide of production, which will be attached to, generates 5-6 tons of titanium gypsums.Titanium stone
Cream is that a kind of water content is big, viscosity is high, impurity component is high, a kind of low industrial waste of extensive resource utilization rate.Titanium gypsum
Final set it is shorter and solidification after micro-expansibility, can effectively accelerate filling process and completely fill goaf, while again can
Solve the problems, such as titanium gypsum using difficult, the cost of reduction goaf filling.Chinese patent CN101486533A mining filling is early
Strong rubber consolidates powder, and it is only to provide and consolidates powder with the glue of slag, lime, desulfurized gypsum and titanium gypsum simple formulation, is not directly to make
It is also larger with formulation differences of the invention to fill sill.
Summary of the invention
The present invention overcomes above-mentioned the deficiencies in the prior art, provide a kind of titanium gypsum sill for goaf filling and
Preparation method, the present invention in for goaf filling titanium gypsum sill with by calcining ageing after titanium gypsum based on
Raw material is wanted, the ingredients such as a small amount of portland cement, desulfurized gypsum, flyash are added, can be completed by mixing, molding, demoulding.
A kind of titanium gypsum sill for goaf filling, including following component (according to the mass fraction):
65-85 parts of titanium gypsum, 5-10 parts of desulfurized gypsum, 1-12 parts of cement, 1-6 parts of flyash, silicon by calcining ageing
1-6 parts grey, 1-6 parts of slag, 0.05-0.3 parts of sodium citrate, 0.1-0.3 parts of sodium carboxymethylcellulose, 0.3 part of naphthalene water reducer,
0.05-0.2 parts of exciting agent.
Further, above-mentioned naphthalene water reducer is naphthalenesulfonate formaldehyde condensation compound.
Further, above-mentioned 425 portland cement of cement selection.
Further, above-mentioned exciting agent is K2SO4。
Further, the preparation method of the above-mentioned titanium gypsum by calcining ageing includes the following steps:
S1 titanium gypsum is dried at 40-42 DEG C after titanium gypsum；
Titanium gypsum after being dried in S2 step S1 is put into 170-175 DEG C of high temperature calcining 1.8-2h, after being calcined
Titanium gypsum；
The calcined titanium gypsum obtained in S3 step S2 is aged the 7-10 days titanium gypsums obtained by calcining ageing.
Further, the preparation method of above-mentioned titanium gypsum sill, includes the following steps:
1) corresponding water consumption is obtained according to the standard of normal consistency 90-120%, by 3 parts of naphthalene water reducers, 0.05-0.3
Part sodium citrate, 0.1-0.3 parts of sodium carboxymethylcelluloses and 0.05-0.2 parts of exciting agents are added to the water stirring, and sufficiently dissolution obtains
Material 1；
2) 65-85 parts of titanium gypsums, 5-10 parts of desulfurized gypsums, 425 portland cement of 1-12 part, 1-6 parts of flyash, 1- are weighed
6 parts of silicon ashes, 1-6 parts of slag this six kinds of materials are sufficiently mixed, and obtain material 2；
3) material 2 that step 2) obtains is poured into the material 1 of step 1) acquisition, pours into mold, puts after being sufficiently stirred
It is placed in 20 ± 1 DEG C, 1.5-2h under humidity 50-65% environment, demoulding obtains molding titanium gypsum sill after solidification；
4) the molding titanium gypsum sill obtained in step 3) is put into control environment and conserves 7d, can obtained after drying
Obtain required titanium gypsum sill.
Further, above-mentioned steps 3) in mold refer to tri- gang mould of 40mm*40mm*160mm have.
Further, above-mentioned steps 4) described in control environment refer to the environment of 20-22 DEG C of temperature, humidity 55-65%.
The utility model has the advantages that
(1) the cost of material is low.Using titanium gypsum be primary raw material on the basis of, in addition a small amount of cement and other solid waste materials
Material uses cement to do packing material low in cost before comparing.
(2) titanium gypsum base packing material mobility, workability are good, convenient for construction.
(3) titanium gypsum sill final setting time shortens relative to cement-based material, reduces the filling time.
(4) titanium gypsum sill has micro-expansibility after solidification, and cement has shrinkage after solidification；Titanium stone
This micro-expansibility of cream base material can be tight the corner for filling up goaf.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the application, below with reference to embodiment to this hair
Bright to be described further, described embodiment is only some embodiments of the present application, rather than all, the present invention is not by following
The limitation of embodiment.
Embodiment 1 prepares titanium gypsum sill
(1) a kind of titanium gypsum sill for goaf filling, by titanium gypsum 80, desulfurized gypsum 6,425 silicate cements
Mud 6, flyash 3, silicon ash 3, slag 2, sodium citrate 1 ‰, sodium carboxymethylcellulose 1 ‰, naphthalene water reducer 3 ‰, exciting agent
1 ‰, mark thick 90% is prepared into three gang moulds, and 7d, test related data such as 1 institute of table are conserved under 20 DEG C of temperature, 55% environment of humidity
Show.
1 titanium gypsum testing of materials related data of table
(2) a kind of titanium gypsum sill for goaf filling, by titanium gypsum 75, desulfurized gypsum 5,425 silicate cements
Mud 10, flyash 5, silicon ash 2, slag 3, sodium citrate 1 ‰, sodium carboxymethylcellulose 1.5 ‰, naphthalene water reducer 3 ‰, exciting agent
1.3 ‰, mark thick 95% is prepared into three gang moulds, and 7d, test related data such as table 2 are conserved under 20 DEG C of temperature, 55% environment of humidity
It is shown.
2 titanium gypsum testing of materials related data of table
(3) a kind of titanium gypsum sill for goaf filling, by titanium gypsum 85, desulfurized gypsum 8,425 silicate cements
Mud 2, flyash 1, silicon ash 2, slag 2, sodium citrate 1 ‰, sodium carboxymethylcellulose 1.5 ‰, naphthalene water reducer 3 ‰, exciting agent
1.5 ‰, mark thick 100% is prepared into three gang moulds, and 7d, test related data such as table 3 are conserved under 20 DEG C of temperature, 55% environment of humidity
It is shown.
3 titanium gypsum testing of materials related data of table
Embodiment 2
Titanium gypsum, desulfurized gypsum, 425 portland cements, powder are weighed respectively according to the ratio of (1) (2) (3) in embodiment 1
These types of material is sufficiently mixed uniformly by coal ash, silicon ash, slag, and the material mixed is poured into the naphthalene system being stirred
It in the mixed solution of water-reducing agent, sodium citrate, sodium carboxymethylcellulose and exciting agent and water, stirs evenly, prepares titanium stone respectively
Three kinds of slurries are poured into Vicat apparatus respectively and test its first final set by cream base material 1, titanium gypsum sill 2 and titanium gypsum sill 3
Time；Slurry is prepared according to above-mentioned slurry preparation method simultaneously to pour into tri- gang mould of 40mm*40mm*160mm, is taken off after 1.5-2h
Mould, in 42 DEG C of drying test its 7d intensity after being put into and be placed in 20 ± 1 DEG C, conserving 7d under humidity 50-65% environment
Control group is set using ordinary cement, cement matrix slurry body is poured into respectively in Vicat apparatus when testing its first final set
Between；Slurry is prepared according to above-mentioned slurry preparation method simultaneously to pour into tri- gang mould of 40mm*40mm*160mm, and placement is put into after demoulding
It is conserved under 20 ± 1 DEG C, 95% water environment of humidity, tests its 7d intensity
The comparative test of titanium gypsum sill and cement in 4 present invention of table
From table 4 can, final setting time contracts significantly relative to cement-based material at the beginning of to find out 1,2,3 group of titanium gypsum sill
It is short, the entire goaf filling time used is just reduced with this, greatly accelerates entire goaf infilling work progress.Comparison
Titanium gypsum sill and cement-based material 7d intensity are analyzed, though three groups of titanium gypsum base stock stiffness are all not so good as cement-based material,
It is that fill area is in without artificial movable region, titanium gypsum base stock stiffness can satisfy filling and require；In addition to this, using water
Cement-based material, also will increase the production of cement output, and can have certain destruction in manufacture of cement to ecological environment, and titanium gypsum
Sill is solid waste mostly, and relative to cement-based material filling goaf is used, it will not only have ecological environment
Evil, while can also solve the problems, such as that titanium gypsum processing is difficult.
Claims (8)
1. a kind of titanium gypsum sill for goaf filling, which is characterized in that including following component, according to mass fraction
Meter:
65-85 parts of titanium gypsum, 5-10 parts of desulfurized gypsum, 6-15 parts of cement, 3-6 parts of flyash, silicon ash 3-6 by calcining ageing
Part, 2-5 parts of slag, 0.05-0.3 parts of sodium citrate, 0.1-0.3 parts of sodium carboxymethylcellulose, 3 parts of naphthalene water reducer, exciting agent
0.05-0.2 parts.
2. titanium gypsum sill as described in claim 1, which is characterized in that the naphthalene water reducer is naphthalene sulphonate formaldehyde contracting
Close object.
3. cement as described in claim 1 is 425 portland cements.
4. titanium gypsum sill as described in claim 1, which is characterized in that the exciting agent is K2SO4。
5. titanium gypsum sill as described in claim 1, which is characterized in that the preparation of the titanium gypsum by calcining ageing
Method includes the following steps:
S1 titanium gypsum is dried at 40-42 DEG C after titanium gypsum；
Titanium gypsum after being dried in S2 step S1 is put into 170-175 DEG C of high temperature calcining 1.8-2h, obtains calcined titanium
Gypsum；
The calcined titanium gypsum obtained in S3 step S2 is aged the 7-10 days titanium gypsums obtained by calcining ageing.
6. the preparation method of titanium gypsum sill as described in claim 1, which comprises the steps of:
1) corresponding water consumption is obtained according to the standard of normal consistency 90-120%, by 3 parts of naphthalene water reducers, 0.05-0.3 parts of lemons
Lemon acid sodium, 0.1-0.3 parts of sodium carboxymethylcelluloses and 0.05-0.2 parts of exciting agents are added to the water stirring, and sufficiently dissolution obtains material
1；
2) 65-85 parts of titanium gypsums, 5-10 parts of desulfurized gypsums, 425 portland cement of 6-15 part, 3-6 parts of flyash, 3-6 parts are weighed
This six kinds of materials of silicon ash, 2-5 part slag are sufficiently mixed, and obtain material 2；
3) material 2 that step 2) obtains is poured into the material 1 of step 1) acquisition, pours into mold, is placed in after being sufficiently stirred
20 ± 1 DEG C, 1.5-2h under humidity 50-65% environment, demoulding obtains molding titanium gypsum sill after solidification；
4) the molding titanium gypsum sill obtained in step 3) is put into control environment and conserves 7d, can be obtained institute after drying
The titanium gypsum sill needed.
7. preparation method as claimed in claim 6, which is characterized in that the mold in step 3) refers to 40mm*40mm*
Tri- gang mould of 160mm tool.
8. preparation method as claimed in claim 6, which is characterized in that control environment described in step 4) refers to temperature 20-22
DEG C, the environment of humidity 55-65%.
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| CN201910688988.8A CN110372309B (en) | 2019-07-29 | 2019-07-29 | Titanium gypsum-based material for goaf filling and preparation method thereof |
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| CN201910688988.8A CN110372309B (en) | 2019-07-29 | 2019-07-29 | Titanium gypsum-based material for goaf filling and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321254A (en) * | 2020-11-04 | 2021-02-05 | 浙大宁波理工学院 | Controllable low-strength material using titanium gypsum and engineering waste soil and preparation method thereof |
| CN113233854A (en) * | 2021-05-24 | 2021-08-10 | 昆明理工大学 | Preparation method of CaSO 4-based solid waste environment-friendly filling material |
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| CN103043985A (en) * | 2013-01-13 | 2013-04-17 | 济南大学 | Titanium gypsum composite binding material and preparation method thereof |
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| CN108996978A (en) * | 2018-08-31 | 2018-12-14 | 深圳市颐泰中和科技有限公司 | A kind of filling in mine material and its preparation facilities and preparation method and cementing agent for filling in mine slurry |
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2019
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| CN103043985A (en) * | 2013-01-13 | 2013-04-17 | 济南大学 | Titanium gypsum composite binding material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321254A (en) * | 2020-11-04 | 2021-02-05 | 浙大宁波理工学院 | Controllable low-strength material using titanium gypsum and engineering waste soil and preparation method thereof |
| CN113233854A (en) * | 2021-05-24 | 2021-08-10 | 昆明理工大学 | Preparation method of CaSO 4-based solid waste environment-friendly filling material |
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| CN110372309B (en) | 2021-12-21 |
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