CN104817286B - Preparation method of full-tailing consolidation discharge cementing agent - Google Patents
Preparation method of full-tailing consolidation discharge cementing agent Download PDFInfo
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- 238000007596 consolidation process Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 239000002893 slag Substances 0.000 claims abstract description 33
- 239000010881 fly ash Substances 0.000 claims abstract description 29
- 239000010440 gypsum Substances 0.000 claims abstract description 28
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001868 water Inorganic materials 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 239000004571 lime Substances 0.000 claims abstract description 11
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 238000000498 ball milling Methods 0.000 claims abstract description 6
- 239000002440 industrial waste Substances 0.000 claims abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000292 calcium oxide Substances 0.000 claims description 15
- 235000012255 calcium oxide Nutrition 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- 239000000378 calcium silicate Substances 0.000 claims description 7
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- -1 clinker Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 235000010755 mineral Nutrition 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004572 hydraulic lime Substances 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 229910001374 Invar Inorganic materials 0.000 claims 1
- 238000009628 steelmaking Methods 0.000 claims 1
- 238000011049 filling Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 9
- 239000011398 Portland cement Substances 0.000 description 7
- 235000012241 calcium silicate Nutrition 0.000 description 7
- 239000000499 gel Substances 0.000 description 7
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001653 ettringite Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 235000012215 calcium aluminium silicate Nutrition 0.000 description 1
- 239000000404 calcium aluminium silicate Substances 0.000 description 1
- WNCYAPRTYDMSFP-UHFFFAOYSA-N calcium aluminosilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O WNCYAPRTYDMSFP-UHFFFAOYSA-N 0.000 description 1
- 229940078583 calcium aluminosilicate Drugs 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of a novel cementing agent for full tailing consolidation discharge, belongs to the field of tailing treatment, and is used for tailing consolidation discharge of metal mines or underground tailing filling and the like. The novel cementing agent is prepared from the following raw materials in percentage by mass according to the characteristics of a whole tailing consolidation discharge process: 40-80% of iron ore blast furnace water-quenched slag, 10-30% of fly ash, 5-20% of clinker, 4-8% of lime and 2-6% of gypsum. Ball milling of partial raw materials by a ball mill for the following time: 50min of clinker, 30min of slag, 10min of gypsum and 3min of fly ash. The invention directly uses common industrial waste slag and fly ash, adds an active excitant with reasonable mass fraction, and can obtain consolidated discharge slurry with good workability and strength meeting the discharge requirement after being mixed with full tailings aggregate and added with water, thereby having good social significance and economic benefit for recycling industrial resources and controlling the discharge cost of mine tailings.
Description
Technical Field
The invention relates to the field of tailing treatment, in particular to a novel cementing agent for full tailing consolidation and discharge.
Background
At present, the accumulated amount of various industrial solid wastes in China is about 100 hundred million t, and the accumulated amount is continuously increased every year. The method mainly comprises the following steps: tailings, slag, smelting slag, coal gangue, fly ash and other wastes. According to the annual report data of environmental statistics, the total emission amount of general industrial solid wastes in China in 2013 is 31.3 hundred million t, wherein the tailings account for 34%, the slag accounts for 8.5%, the smelting waste residues account for 11.8%, the coal gangue accounts for 12.3%, the fly ash accounts for 14.8%, and other wastes account for 18.7%. According to the annual report, the comprehensive utilization amount of general industrial solid wastes in 2013 in China is 20.6 hundred million t, and the comprehensive utilization rate is low and is only 62.2%.
In the face of the problems of great discharge amount of tailings and environmental pollution, land occupation, potential safety hazards and the like caused by the tailings, the whole tailing consolidation discharge process is a novel tailing treatment mode which is developed in recent years, and means that a high-efficiency consolidation agent is selected to consolidate the whole tailings discharged from a factory, and then the consolidated tailings are discharged to a surface collapse pit formed by mining or stockpiled to a proper place on the surface, and a consolidated body with certain strength is formed. The technology not only eliminates the hidden danger of dam break of the traditional tailing pond, but also avoids the problems of collapse, dust raising and the like of tailing sand when meeting the water sludge, and prepares early stage for tailing reclamation, and is an effective way for treating mine industrial emissions. At present, the cementing agent commonly used in the whole tailing consolidation discharge process mainly uses ordinary portland cement, composite portland cement or slag portland cement and the like by referring to a filling system, but the popularization and the application of the whole tailing consolidation discharge process are restricted because the traditional cement has high energy consumption, large pollution, low material utilization rate and high cost in the production process.
Therefore, according to the micro mechanism of consolidation diagenesis of different raw materials, a novel consolidation material with good cementing property, high raw material utilization rate and good durability is prepared by adopting a new raw material and a new production method, and practical guidance is provided for the control of consolidation discharge cost and the popularization of the whole tailing consolidation discharge process.
Disclosure of Invention
The invention aims to provide a preparation method of a novel cementing agent for full tailing consolidation discharge. The novel cementing agent is prepared from raw materials with certain components according to certain mass fractions according to the characteristics of a full tailing consolidation discharge process, and partial raw materials are subjected to ball milling by a ball mill. The invention directly uses common industrial waste slag and fly ash, adds an active excitant with reasonable mass fraction, and can obtain consolidated discharge slurry with good workability and strength meeting the discharge requirement after being mixed with full tailings aggregate and added with water, thereby having good social significance and economic benefit for recycling industrial resources and controlling the discharge cost of mine tailings.
A preparation method of a novel cementing agent for full tailing consolidation discharge comprises the following main points:
the novel cementing agent consists of five components of iron ore blast furnace water quenched slag, fly ash, clinker, lime and gypsum, and the mass fractions are respectively as follows: 40-80%, 10-30%, 5-20%, 4-8% and 2-6%; part of the raw materials are ball-milled by a ball mill, and the ball-milling method comprises the following steps: firstly, clinker is ground for 50min, slag is ground for 30min, gypsum is ground for 10min and fly ash is ground for 3min respectively. After reaching a certain fineness, adding quicklime, clinker, slag and gypsum to grind for 10min, thus obtaining the novel full-tailings cementing agent with uniform density and uniformly mixed components.
The novel cementing agent is the water-quenched slag of the iron ore blast furnace, and the main components of the water-quenched slag are CaO and SiO2、Al2O3MgO, which contains small amounts of oxides of Na, Fe and Mn.
The fly ash of the novel cementing agent comprises F-class fly ash and C-class fly ash, and the main component of the fly ash is SiO2、Al2O3、 Fe2O3CaO, and oxides containing small amounts of Mg, Na and Mn.
The gypsum of the novel cementing agent comprises raw gypsum, calcined gypsum, desulfurized gypsum, natural gypsum and the like.
The clinker of the novel cementing agent mainly contains CaO and SiO2、Al2O3、Fe2O3Wherein calcium silicate mineral is not less than 66%, CaO and SiO2The mass ratio is not less than 2.0.
The lime of the novel cementing agent comprises air hardening lime and hydraulic lime, and the main component is mainly calcium oxide.
The ball milling sequence of the novel cementing agent comprises the steps of grinding clinker for 50min, grinding slag for 30min, grinding gypsum for 10min and grinding fly ash for 3 min. After reaching a certain fineness, adding quicklime, clinker, slag and gypsum to grind for 10 min.
The novel cementing agent comprises gypsum and lime as active exciting agents.
According to the technical scheme, the raw materials adopted by the novel cementing agent prepared by the invention not only consume smelting waste residues, fly ash and other industrial wastes, but also reduce the production cost of the cementing agent, and the material is environment-friendly and energy-saving, does not need a complex calcination process, and reduces the carbon emission of enterprises. In addition, the cementing agent has good workability, the strength of a consolidation body meets the discharge requirement, and the cementing agent can be used as the cementing agent of a full-tailing consolidation discharge process instead of the traditional cement.
Drawings
FIG. 1 is a flow chart of the novel cement preparation process of the present invention.
Detailed Description
The present invention is further described below, but the scope of the present invention is not limited to the scope of the embodiments described below.
The present invention is further described in conjunction with the preparation flow diagrams provided herein. The performance of the novel binder for discharging all-tailings is illustrated by specific examples. In this example, the whole tailings sample was taken from the Li lou-Wu Jie iron mine tailing warehouse, Anhui province, and the physical and mechanical properties are shown in Table 1. The tailings belong to acid tailings, the specific gravity of + 100-270 mu m accounts for about 60%, the nonuniform coefficient Cu is 3.636, the curvature coefficient Cc is 1.657, and the tailings are generally graded.
TABLE 1 basic Property parameters of Liquan-Wu-Ji-Fe mine full tailings
This example prepares a full tailings consolidated discharge slurry as follows:
the slurry discharged by the full tailing consolidation is prepared according to the mass concentration of 75 percent, wherein the doping amount of the cementing agent added in the slurry is 4.5 percent and 6 percent respectively, namely the novel cementing agent: full tailings: water 4.5: 70.5: 25 and novel cements: full tailings: water 6: 69: 25, the new binder formulation is shown in Table 2 for 12 sets of examples, and the uniaxial compressive strength of test blocks 3d, 7d, 28d was measured using ordinary portland cement (P.O.42.5), slag portland cement (P.SA.32.5), and composite portland cement (P.C.42.5) as consolidated whole tailings control tests. Example nos. 13, 14 and 15 are reference comparative tests with the addition of ordinary portland cement, composite cement and slag cement, respectively, as shown in table 2.
Pouring proper amount of cementing agent-whole tailing-water and cement-whole tailing-water into a stirring pot respectively, using a cement mortar stirrer to stir the slurry evenly, scraping the slurry into a test mold, placing the test mold on a mortar vibrating table to vibrate so as to enable the slurry to be uniform and compact, and then leveling the surface of the test block and numbering. And standing the test mold at room temperature for 24h, removing the test mold, and placing the test mold into a curing box. The curing temperature is 20 +/-1 ℃, the humidity is more than or equal to 95 percent, and the curing period is 3d, 7d and 28 d. And (4) carrying out uniaxial compressive strength test on the test block which is cured to the specified age.
The above consolidation strength test data are plotted in tables 4 and 5. As can be seen from tables 4 and 5, the early strength of the full-tailings consolidated body prepared by the invention is slightly lower than that of the traditional cement, but the strength is increased rapidly, the middle period is equal to that of the cement, and the later-period consolidation effect is higher than that of the cement (except example 5 with the addition of 4.5%), which shows that the full-tailings consolidated body has excellent consolidation performance and can be used for full-tailings consolidation discharge.
The invention relates to a preparation method of a novel cementing agent for full-tailing consolidation discharge, which selects alkali activator gypsum and sulfate activator gypsum according to the characteristics of a full-tailing consolidation discharge process and the consolidation diagenesis mechanism of materials such as smelting waste residue, fly ash and the like, optimizes the preparation scheme and the proportion, and has the principle that:
the slag is protected by a surface silica network structure and has certain dynamic stability, and the slag hardly participates in the reaction after the cementing agent is mixed with water. The lime and the gypsum are ionized, and the active ingredients of the clinker, namely tricalcium silicate C3S and dicalcium silicate C2S, tricalcium aluminate C3A. Tetra calcium aluminoferrite C4AF and other main minerals, water and CaSO4The reaction first occurs to form calcium silicate hydrate, a large amount of CH and other gels. The calcium silicate hydrate is insoluble in water, is separated out as colloidal particles and gradually coagulates to form calcium silicate hydrate gel. The concentration of CH in solution quickly reaches supersaturation and precipitates as crystals. Because the consolidation agent contains a small amount of gypsum, ettringite is generated at the early stage of hydration, and the ettringite can be well consolidated with hydrated gelled substances, thereby being beneficial to improving the early strength of a consolidated body.
After the clinker hydration reaction, the pH value of the solution rises rapidly, and multiphase dynamic ionization balance of CH exists, so that the potential activity of the slag micro powder is excited: OH group-、H+The plasma enters cavities of a vitreous body network structure of the water quenching slag and adsorbs Ca on the surface of the vitreous body2+、Mg2+And (4) ions form hydroxide to destroy a silica network structure protective film on the surface of the glass body, so that the slag begins to hydrate. In addition, Al in fly ash2O3Active substances such as CaO and the like also participate in hydration to generate ettringite and gel substances.
The fly ash plays a 'micro-aggregate effect' at the early stage of hydration, the surface of the fly ash is covered by calcium silicate hydrate gel and CH, Ca2+And OH-The permeation is continued. In the later stage of hydration, the volcanic ash effect of the fly ash is completely excited, and various types of calcium silicate hydrate gel and calcium aluminosilicate hydrate gel are generated in the consolidated body. The tiny gel substances are filled in the tiny pores in the consolidated body, so that the defect of the pores is overcome, and the overall strength of the consolidated body is enhanced.
Table 2 test protocol one
TABLE 3 test protocol two
TABLE 4 Strength results/MPa of test protocol one
TABLE 5 Strength results/MPa for test protocol two
Claims (7)
1. A preparation method of a full-tailing consolidation discharge cementing agent is characterized by comprising the following steps: the iron ore blast furnace slag-lime composite material consists of five components of iron ore blast furnace water-quenched slag, fly ash, clinker, lime and gypsum, and the weight percentages are respectively as follows: 71% -80%, 10% -30%, 5%, 4% -8% and 2% -4%; ball milling part of the raw materials by a ball mill, wherein the ball milling method comprises the following steps: firstly, independently grinding clinker for 50min, slag for 30min, gypsum for 10min and fly ash for 3 min; adding quick lime, clinker, slag, fly ash and gypsum to grind for 10min after reaching a certain fineness to obtain a full-tailings cementing agent with uniform density and uniformly mixed components; the cementing agent directly uses invar industrial waste slag and fly ash, is doped with an active excitant with reasonable mass fraction, is uniformly mixed with full tailings according to a certain ash-sand ratio, and is added with water, so that the obtained full tailings discharge slurry has the characteristics of good workability and strength meeting the discharge requirement;
the clinker mainly contains CaO and SiO2、Al2O3、Fe2O3Wherein calcium silicate mineral is not less than 66%, CaO and SiO2The mass ratio is not less than 2.0.
2. The method for preparing the whole tailing consolidating discharge cementing agent according to claim 1, which is characterized in that:
the blast furnace water quenching slag comprises cast raw iron slag, steelmaking raw iron slag and special raw iron slag, and the main components of the slag are CaO and SiO2、Al2O3MgO, which contains small amounts of oxides of Na, Fe and Mn.
3. The method for preparing the whole tailing consolidating discharge cementing agent according to claim 1, which is characterized in that:
the fly ash comprises F-class fly ash and C-class fly ash, and the main component of the fly ash is SiO2、Al2O3、Fe2O3CaO, and oxides containing small amounts of Mg, Na and Mn.
4. The method for preparing the whole tailing consolidating discharge cementing agent according to claim 1, which is characterized in that:
the gypsum comprises gypsum, calcined gypsum, desulfurized gypsum and natural gypsum.
5. The method for preparing the whole tailing consolidating discharge cementing agent according to claim 1, which is characterized in that:
the lime comprises air hardening lime and hydraulic lime, and the main component is calcium oxide.
6. The method for preparing the whole tailing consolidating discharge cementing agent according to claim 1, which is characterized in that:
firstly, clinker is ground for 50min, slag is ground for 30min, gypsum is ground for 10min and fly ash is ground for 3min, and quicklime, the clinker, the slag, the fly ash and the gypsum are added to be ground for 10min after a certain fineness is reached.
7. The method for preparing the whole tailing consolidating discharge cementing agent according to claim 1, which is characterized in that:
the active excitant is gypsum and lime.
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| CN105565735B (en) * | 2015-11-30 | 2018-05-18 | 北京建研昆仑科技有限公司 | Sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material and the consolidated fill method of mine worked-out section |
| CN108455622A (en) * | 2018-01-29 | 2018-08-28 | 南京工业大学 | A kind of CASH mineral and preparation method thereof being suitable for improving alkali-activated slag system volume stability |
| CN110451903B (en) * | 2019-08-29 | 2022-04-05 | 深圳市中金岭南有色金属股份有限公司 | Composite cementing material and method for cementing high-sulfur superfine lead-zinc ore tailings |
| CN112723762A (en) * | 2021-01-25 | 2021-04-30 | 河北工程大学 | Cementing material for modifying bulk filling body and preparation method and application thereof |
| CN113248225A (en) * | 2021-05-20 | 2021-08-13 | 安徽开发矿业有限公司 | Mine filling cementing material |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190469A (en) * | 2010-03-08 | 2011-09-21 | 淄博乾耀固结材料有限公司 | Novel tailing consolidator and preparation method thereof |
| CN102249611A (en) * | 2011-05-13 | 2011-11-23 | 河北钢铁集团矿业有限公司 | Cementing material for cemented fill mining of mines and preparation method for cementing material |
| CN102557561A (en) * | 2011-11-23 | 2012-07-11 | 淄博乾耀固结材料有限公司 | High-performance sand-soil consolidation material, as well as preparation method and using method thereof |
| CN103086620A (en) * | 2013-01-30 | 2013-05-08 | 中钢集团马鞍山矿山研究院有限公司 | Gelatinizing agent suitable for unclassified tailing filling |
| 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 |
| CN103288399A (en) * | 2013-05-24 | 2013-09-11 | 鄂州华重充填工程材料有限公司 | Production method of tailing dry-pile solidifying agent |
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