CN111875327A - Special curing agent for curing gold mine tailing slurry and application method thereof - Google Patents
Special curing agent for curing gold mine tailing slurry and application method thereof Download PDFInfo
- Publication number
- CN111875327A CN111875327A CN202010595083.9A CN202010595083A CN111875327A CN 111875327 A CN111875327 A CN 111875327A CN 202010595083 A CN202010595083 A CN 202010595083A CN 111875327 A CN111875327 A CN 111875327A
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- CN
- China
- Prior art keywords
- curing agent
- mine tailing
- gold mine
- tailing slurry
- special
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00775—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself
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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
- 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
Abstract
The invention relates to a special curing agent for curing gold mine tailing slurry, which comprises 3-7% of calcium silicate, 5-8% of limestone, 10-15% of gypsum, 0-1% of silicon oxide, 0-2% of aluminum oxide, 5-10% of coking desulfurization and denitrification ash and 57-77% of slag powder by mass ratio. The application method of the special curing agent for curing the gold mine tailing slurry comprises the steps of mixing the special curing agent and the gold mine tailing slurry according to the proportion of 1:8-10 and then solidifying. The curing agent component and mineral alkali metal ions, alkaline earth metal ions and water produce a series of inorganic macromolecular chemical reactions to form a large amount of crystalline hydrate and colloid components with plastic strength, adhesive strength, great chemical inertness, micro-expansibility and obvious water-draining property, and the crystalline hydrate and colloid components are used as particle cement and pore filler, so that the structural strength of the mud draining sediment is greatly improved. The gold mine tailing slurry adopting the special curing agent can be backfilled or solidified in a dry pile mode, and the 28-day compressive strength reaches more than 1.7 MPa.
Description
Technical Field
The invention relates to the field of comprehensive utilization of metallurgical solid waste resources, in particular to a special curing agent for curing gold mine tailing slurry.
Background
Steel mills generate a large amount of metallurgical solid waste resources such as coking desulfurization and denitrification ash every year, the comprehensive utilization rate is not high at present, a large amount of metallurgical solid waste resources are stacked, cultivated land is occupied, and the environment is polluted. The gold mining generates a large amount of tailing slurry every year, and the cost is high because the tailing slurry cannot be directly backfilled or solidified by other methods. The application relates to how to change metallurgical solid waste resources into valuables and simultaneously solve the problem of gold mine tailing slurry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a special curing agent for curing gold mine tailing slurry, so that the gold mine tailing slurry can be backfilled or solidified in a dry pile manner.
In order to achieve the purpose, the invention adopts the following technical scheme:
a special curing agent for curing gold mine tailing slurry comprises, by mass, 3-7% of calcium silicate, 5-8% of limestone, 10-15% of gypsum, 0-1% of silicon oxide, 0-2% of aluminum oxide, 5-10% of coking desulfurization and denitrification ash and 57-77% of slag powder.
The content of sodium sulfate in the coking desulfurization and denitrification ash is 40-50%.
An application method of a special curing agent for curing gold mine tailing slurry is characterized in that the special curing agent and the gold mine tailing slurry are mixed according to a ratio of 1:8-10 and then are solidified.
The concentration of the gold mine tailing slurry is 60-70%.
Compared with the prior art, the invention has the beneficial effects that:
the raw material of the special curing agent is industrial solid waste which is subjected to a high-temperature process, and the special curing agent has a high-performance structure with high chemical activity after being subjected to efficient physical and chemical activation processing. The curing agent is mixed into the slurry of tailings and the like according to a certain proportion, alkali metal ions and alkaline earth metal ions are adsorbed on the surface of minerals, and the components of the curing agent and the alkali metal ions, the alkaline earth metal ions and water generate a series of inorganic macromolecular chemical reactions to form a large amount of crystalline hydrate and colloid components with plastic strength, bonding strength, great chemical inertness, micro-expansibility and obvious water-leaching property, and the crystalline hydrate and the colloid components are used as the cementing material and the pore filling material of particles, so that the structural strength, the impermeability, the softening resistance, the disintegration resistance, the freezing resistance, the stability, the durability and the like of the slurry water-leaching sediment are greatly improved, and the mechanical property of the slurry is finally improved. The gold mine tailing slurry adopting the special curing agent can be backfilled or solidified in a dry pile mode, and the 28-day compressive strength reaches more than 1.7 MPa. And meanwhile, the additional value of the metallurgical solid waste is improved.
Detailed Description
The invention is further illustrated by the following examples:
the following examples describe the invention in detail. These examples are merely illustrative of the best embodiments of the present invention and do not limit the scope of the invention.
Example 1
A special curing agent for curing gold mine tailing slurry is prepared by mixing raw materials, by mass, 5% of calcium silicate, 8% of limestone, 10% of gypsum, 1% of silicon oxide, 2% of aluminum oxide, 5% of coking desulfurization and denitrification ash and 69% of slag powder to obtain the special curing agent. Wherein the content of sodium sulfate in the coking desulfurization and denitrification ash is 40 percent.
The application method of the special curing agent for curing the gold mine tailing slurry comprises the step of mixing the special curing agent and the gold mine tailing slurry (the concentration is 70 percent) according to the proportion of 1:10, and carrying out dry-stacking curing, wherein the 28-day compressive strength of the mixture reaches more than 4.1 MPa.
Example 2
A special curing agent for curing gold mine tailing slurry is prepared by mixing 7% of calcium silicate, 8% of limestone, 15% of gypsum, 1% of silicon oxide, 1% of aluminum oxide, 10% of coking desulfurization and denitrification ash and 58% of slag powder according to the mass ratio. Wherein the content of sodium sulfate in the coking desulfurization and denitrification ash is 45 percent.
The application method of the special curing agent for curing the gold mine tailing slurry comprises the steps of mixing the special curing agent with the gold mine tailing slurry (the concentration is 60%) according to the proportion of 1:10, and backfilling, wherein the 28-day compressive strength of the mixture reaches more than 3.2 MPa.
Example 3
A special curing agent for curing gold mine tailing slurry is prepared by mixing raw materials, by mass, 6% of calcium silicate, 4% of limestone, 10% of gypsum, 1% of silicon oxide, 1% of aluminum oxide, 10% of coking desulfurization and denitrification ash and 68% of slag powder to obtain the special curing agent. Wherein the content of sodium sulfate in the coking desulfurization and denitrification ash is 48 percent.
The application method of the special curing agent for curing the gold mine tailing slurry comprises the step of dry-stacking and curing the special curing agent and the gold mine tailing slurry (with the concentration of 60%) according to the proportion of 1:10, wherein the 28-day compressive strength of the slurry reaches more than 1.7 MPa.
Claims (4)
1. The special curing agent for curing gold mine tailing slurry is characterized by comprising 3-7% of calcium silicate, 5-8% of limestone, 10-15% of gypsum, 0-1% of silicon oxide, 0-2% of aluminum oxide, 5-10% of coking desulfurization and denitrification ash and 57-77% of slag powder by mass.
2. The special curing agent for curing gold mine tailing slurry according to claim 1, wherein the content of sodium sulfate in the coking desulfurization denitration ash is 40-50%.
3. The application method of the special curing agent for curing the gold mine tailing slurry as claimed in claim 1, wherein the special curing agent is mixed with the gold mine tailing slurry according to a ratio of 1:8-10 and then is solidified.
4. The application method of the special curing agent for curing the gold mine tailing slurry as claimed in claim 3, wherein the concentration of the gold mine tailing slurry is 60-70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010595083.9A CN111875327B (en) | 2020-06-28 | 2020-06-28 | Special curing agent for curing gold mine tailing slurry and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010595083.9A CN111875327B (en) | 2020-06-28 | 2020-06-28 | Special curing agent for curing gold mine tailing slurry and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111875327A true CN111875327A (en) | 2020-11-03 |
| CN111875327B CN111875327B (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010595083.9A Active CN111875327B (en) | 2020-06-28 | 2020-06-28 | Special curing agent for curing gold mine tailing slurry and application method thereof |
Country Status (1)
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924003A (en) * | 2012-11-12 | 2013-02-13 | 武汉钢铁(集团)公司 | Fine grain tailing low-cost solidification disposal method |
| CN103145354A (en) * | 2013-02-26 | 2013-06-12 | 河南农业大学 | Clinker-free compound-type tailing consolidating agent as well as preparation and application for same |
| CN103803928A (en) * | 2013-12-27 | 2014-05-21 | 金川集团股份有限公司 | Early strength filling cementing material for copper-nickel ore full tailings and rod-mill tailings mixed filler |
| CN106082902A (en) * | 2016-06-16 | 2016-11-09 | 济南大学 | A kind of gold mine tailings selects the complex cement firming agent of waste residue filling after ferrum |
| CN108793794A (en) * | 2018-06-22 | 2018-11-13 | 深圳市颐泰中和科技有限公司 | The method of red mud solidified cementitious compositions and preparation method thereof and in-situ solidifying red mud |
| CN109095877A (en) * | 2018-10-31 | 2018-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of soil body curing agent and preparation method thereof, curing soil |
| CN109626931A (en) * | 2019-01-08 | 2019-04-16 | 中冶南方都市环保工程技术股份有限公司 | Tailing cementing agent and preparation method thereof, application method and application |
| CN110204293A (en) * | 2019-05-30 | 2019-09-06 | 唐家凯 | A kind of curing agent and curing method for curing metal waste residue |
-
2020
- 2020-06-28 CN CN202010595083.9A patent/CN111875327B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924003A (en) * | 2012-11-12 | 2013-02-13 | 武汉钢铁(集团)公司 | Fine grain tailing low-cost solidification disposal method |
| CN103145354A (en) * | 2013-02-26 | 2013-06-12 | 河南农业大学 | Clinker-free compound-type tailing consolidating agent as well as preparation and application for same |
| CN103803928A (en) * | 2013-12-27 | 2014-05-21 | 金川集团股份有限公司 | Early strength filling cementing material for copper-nickel ore full tailings and rod-mill tailings mixed filler |
| CN106082902A (en) * | 2016-06-16 | 2016-11-09 | 济南大学 | A kind of gold mine tailings selects the complex cement firming agent of waste residue filling after ferrum |
| CN108793794A (en) * | 2018-06-22 | 2018-11-13 | 深圳市颐泰中和科技有限公司 | The method of red mud solidified cementitious compositions and preparation method thereof and in-situ solidifying red mud |
| CN109095877A (en) * | 2018-10-31 | 2018-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of soil body curing agent and preparation method thereof, curing soil |
| CN109626931A (en) * | 2019-01-08 | 2019-04-16 | 中冶南方都市环保工程技术股份有限公司 | Tailing cementing agent and preparation method thereof, application method and application |
| CN110204293A (en) * | 2019-05-30 | 2019-09-06 | 唐家凯 | A kind of curing agent and curing method for curing metal waste residue |
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| Publication number | Publication date |
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| CN111875327B (en) | 2022-03-22 |
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