CN102399066A - Method and equipment for comprehensive utilization after three-stage staged treatment of mine stone powder - Google Patents
Method and equipment for comprehensive utilization after three-stage staged treatment of mine stone powder Download PDFInfo
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Abstract
The invention relates to a method and equipment for comprehensive utilization after three-stage staged treatment of mine stone powder. The method for the comprehensive utilization after the staged treatment comprises the following steps of: mixing water and mine stone powder and then washing with sand washing equipment to obtain granular stone material with mud content of less than 1 percent and applying to concrete production as fine aggregate; and performing two-stage sedimentation on slurry: performing first-stage sedimentation to obtain stone powder slurry to replace natural sand in sand lime bricks, and performing second-stage sedimentation to obtain stone powder and mud component slurry to replace grinding fine sand in aerated concrete; the equipment comprises a belt conveyer, a sand washer, a first-stage sedimentation tank and a second-stage sedimentation tank, wherein the belt conveyer is connected with an inlet and an outlet of the sand washer; and the first-stage sedimentation tank is connected with the sand washer as well as the second-stage sedimentation tank through pipelines. In the invention, mine stone powder is prepared into three-class stone material to serve as a building raw material by staged treatment, so that recycling of the mine stone powder is realized, zero emission is effectively realized, building cost is reduced, and environmental protection is facilitated.
Description
Technical field
The invention belongs to the Materials Science and Engineering field, be specifically related to comprehensive utilization method and equipment after three grades of stage treatment of a kind of mine stone flour.
Background technology
Along with the development of state fundamental construction and the raising of national life level, the consumption of concrete and materials for wall significantly increases, and this just requires a large amount of collection river sand and exploitation mine; The exploitation mines produce the building stone in a large number on the one hand, and the production of building stone is accompanied by a large amount of stone flour of generation, because the fluctuation of the silt content of stone flour is bigger; Grain composition is unreasonable, is difficult to rationally utilize, and shows that mainly the product performance of production are unstable; Since 2003; Country puts into effect relevant policies, encourages to use stone flour, can enjoy some reduction or remission of taxes policies; Exploit river sand on the other hand in a large number, destroy environment, all taked in many rivers to prohibit and adopted measure, cause on the construction market river sand in short supply, impel the price of natural river sand to go up again and again, increased building cost.
Summary of the invention
The objective of the invention is to provide comprehensive utilization method after three grades of stage treatment of a kind of mine stone flour to the deficiency of prior art; Carry out becoming the rational three grades of building stones of grating after the stage treatment through mine waste-stone flour that quality fluctuation is bigger,, realize the recycling of mine waste stone powder as building material; Mate the stable of products obtained therefrom (concrete, Dinas brickes, aerating concrete) quality with other raw materials; Realize zero release, reduce building cost, the enabling environment protection.
Another object of the present invention provides a kind ofly carries out the equipment of three grades of stage treatment to the mine stone flour, adopts settling tank and spiral propeller etc. effectively stone flour to be carried out stage treatment, makes the requirement of its As soon as possible Promising Policy difference material of construction.
The technical scheme that the present invention adopted:
Comprehensive utilization method after three grades of stage treatment of a kind of mine stone flour; Be by weight water and mine stone flour are mixed in 0.4: 1～0.8: 1 ratio; Through rotating speed be 15～25 rev/mins washed-out sand equipment clean obtain silt content less than 1%, grain composition reaches the particle building stones of artificial sand standard, be applied to concrete production and make fine aggregate and use; The slurry that cleans out is handled through the two-stage precipitation fractionation: it is that 0.15mm～0.08mm, water cut are 35～45% stone flour slip that first step deposition obtains most of particle diameter, is used for Dinas brickes and replaces natural sand; Second stage deposition obtain most of particle diameter below 0.08mm, water cut is 40～60% stone flour and shale component slip, be used for the aerating concrete and replace levigate sand.
The stone flour slip that said first step deposition obtains is used for the amount of Dinas brickes replacement natural sand below 20%.
Stone flour and shale component slip that said second stage deposition obtains replace levigate sand slip below 35%.
A kind ofly be used for the equipment that above-mentioned mine stone flour carries out three grades of stage treatment; Comprise feed belt machine, outfeed belt machine, sand washer, one-level settling tank, second-level settling pond; Feed belt machine, outfeed belt machine link to each other with inlet, the outlet of sand washer respectively; Utilize the feed belt machine can the mine stone flour be sent in the sand washer and clean, the outfeed belt machine will pass through the particle building stones that obtain after the cleaning and see off and be applied to concrete production and make fine aggregate and use; One-level settling tank, second-level settling pond are divided into kiln basin and settling tank with dividing plate respectively; Bottom at settling tank is provided with spiral propeller; Utilize spiral propeller to push sedimentary slurry to kiln basin, make deposition slurry and water sepn, the purpose of reach enriching slurry, separating moisture; The one-level settling tank is with between sand washer is connected, pass through pipe connection between one-level settling tank and the second-level settling pond; The slip that sand washer cleans behind the stone flour of mine arrives the one-level settling tank through pipe-line transportation; In the one-level settling tank, deposit; Sedimentary stone flour slip is transported to kiln basin under the effect of spiral propeller, most of particle diameter of stone flour slip is that 0.15mm～0.08mm, water cut are 35～45%, is used for Dinas brickes and replaces natural sand; Deposit once more to second-level settling pond by pipe-line transportation through the post-depositional slip of one-level settling tank; Sedimentary stone flour and shale component slip are transported to kiln basin under the effect of spiral propeller; Most of particle diameter of stone flour and shale component slip below 0.08mm, water cut is 40～60%, be used for the aerating concrete and replace levigate sand.Thereby reach the purpose of the mine stone flour being carried out three grades of stage treatment.
The rotating speed of said spiral propeller is 5～30 rev/mins.
Be provided with agitating vane in the said kiln basin, can keep the kiln basin slip stable.
The present invention through the mine stone flour that quality fluctuation is bigger carry out becoming after the stage treatment grating rationally, three grades of building stones of stay in grade; As building material; Realize the recycling of mine waste stone powder, mate the stable of products obtained therefrom (concrete, Dinas brickes, aerating concrete) quality, realize zero release effectively with other raw materials; Reduce building cost, help environment protection.
Description of drawings
Fig. 1 is the structural representation of stage treatment equipment of the present invention.
Among the figure: 1, opening for feed; 2, feed belt machine; 3, sand washer; 4, outfeed belt machine; 5, pipeline; 6, one-level settling tank; 7, settling tank; 8, spiral propeller; 9, dividing plate; 10, kiln basin; 11, second-level settling pond; 12, agitating vane.
Embodiment
In the structure shown in the figure; The present invention design be used for the equipment that the mine stone flour carries out three grades of stage treatment; Comprise feed belt machine 2, outfeed belt machine 4, sand washer 3, one-level settling tank 6, second-level settling pond 11; Opening for feed 1 is set on feed belt machine 2, and feed belt machine 2, outfeed belt machine 4 link to each other with inlet, the outlet of sand washer 3 respectively; One-level settling tank 6, second-level settling pond 11 are divided into kiln basin 10 and settling tank 7 with dividing plate 9 respectively, in the bottom of settling tank spiral propeller 8 are set, and in kiln basin 10, are provided with agitating vane 12; The one-level settling tank is with between sand washer is connected, be connected through pipeline 5 between one-level settling tank and the second-level settling pond.
When the mine stone flour is carried out three grades of stage treatment; Water mixed with the mine stone flour in proportion obtain compound; After pouring compound into opening for feed 1; Feed belt machine 2 is sent into the mine stone flour in the sand washer 3 and is cleaned, and outfeed belt machine 4 will pass through the particle building stones that obtain after the cleaning and see off and be applied to concrete production and make fine aggregate and use; The slip that sand washer cleans behind the stone flour of mine arrives the one-level settling tank through pipe-line transportation; In the one-level settling tank, deposit; Sedimentary stone flour slip is transported to kiln basin 10 under the effect of spiral propeller 8, make deposition slurry and water sepn, the purpose of reach enriching slurry, separating moisture; Most of particle diameter of stone flour slip is that 0.15mm～0.08mm, water cut are 35～45%, is used for Dinas brickes and replaces natural sand; Deposit once more to second-level settling pond by pipe-line transportation through the post-depositional slip of one-level settling tank; Sedimentary stone flour and shale component slip are transported to kiln basin under the effect of spiral propeller; Most of particle diameter of stone flour and shale component slip below 0.08mm, water cut is 40～60%, be used for the aerating concrete and replace levigate sand.Thereby reach the purpose of the mine stone flour being carried out three grades of stage treatment.
Set forth implementation process of the present invention below in conjunction with instance, deepen understanding of the present invention, content of the present invention is not limited only to following instance.
Embodiment one
1, stone flour basal conditions
Big first stone ore is positioned at Sanya, Hainan lichee ditch, belongs to the Irish touchstone stone ore, 2,000,000 tons of yearly capacities, and 900,000 tons of year stone flour quantity dischargeds, the stone flour fundamental property is as shown in table 1.
The big first stone ore stone flour size distribution of table 1 (%) unit: mm
| Specification | ≥5 | 5-2.5 | 2.5-1,25 | 1.25-0.63 | 0.63-0.31 | 0,31-0.16 | 0.16-0.08 | ≤0.08 | Silt content |
| Content | 0-3 | 24-26 | 13-15 | 12-14 | 12-13 | 7-9 | 12-14 | 12-14 | 1.5-6 |
2, the unit type of selecting for use
Charging belt: 1 meter of width, long 15 meters;
Sand washer: model XL screw sand washer, blade diameter 1500mm, washed-out sand slot length 8500mm, 22 kilowatts of power, 21 rev/mins of rotating speeds.
Outfeed belt: 1 meter of width, long 15 meters;
One-level settling tank, second-level settling pond: long: 6000mm, wide: 2200mm, height: 1900mm, each settling tank join 2 of spiral propellers, 11 kilowatts of total powers.
The part by weight of water and mine stone flour: 0.7: 1; 12 rev/mins of screw machine rotating speeds.
3, stage treatment
The compound of water and mine stone flour is transported in the sand washer and cleans through opening for feed, feed belt machine, and the particle building stones that obtain after the cleaning are transported out by the outfeed belt machine and are applied to concrete production and make fine aggregate and use; The slip that sand washer cleans behind the stone flour of mine arrives the one-level settling tank through pipe-line transportation, in the one-level settling tank, deposits, and sedimentary stone flour slip is transported to kiln basin under the effect of spiral propeller, be used for Dinas brickes and replace natural sand; Deposited once more to second-level settling pond by pipe-line transportation through the post-depositional many water slip of one-level settling tank, sedimentary stone flour and shale component slip are transported to kiln basin under the effect of spiral propeller, are used for the aerating concrete and replace levigate sand.
The analytical results of gained particle building stones, stone flour slip, stone flour and shale component slip is shown in table 2, table 3, table 4.
Table 2 particle building stones analytical resultss (%)
| Size of mesh (mm) | 4.75 | 2.36 | 1.15 | 0.6 | 0.30 | 0.15 | 0.075 | Silt content |
| Accumulative total tails over (%) | 3.8 | 24.7 | 44.7 | 63.7 | 75.6 | 90.6 | 99.6 | 0.2 |
| National standard | 0-10 | 0-25 | 10-50 | 41-74 | 70-92 | 90-100 | 90-100 |
Table 3 stone flour pulp particle distribution (%) water cut 40%
| Greater than 0.315mm | 0.315-0.15mm | 0.15-0.08mm | Less than 0.08mm | Silt content % |
| 1.6 | 3.8 | 75.7 | 12.1 | 6.8 |
Table 4 stone flour and shale component slip size distribution (%) water cut 52%
| Greater than 0.315mm | 0.315-0.15mm | 0.15-0.08mm | Less than 0.08mm | Silt content % |
| ?0 | 1.4 | 13.2 | 74.8 | 10.5 |
4, experiment
The concrete test result: utilize natural river sand and particle building stones contrast having carried out concrete test, particle building stones 100% replace natural sand, use the natural sand modulus to be: 2.7, and silt content is: 1.7%.Its result such as table 5, table 6.
Table 5 concrete mix (C30)
| The aggregate kind | Cement | Breeze | Flyash | Coarse aggregate | Fine aggregate | Water | Admixture | Remarks |
| Natural sand | 220 | 80 | 70 | 930 | 880 | 165 | 4.1 | |
| Artificial sand | 220 | 80 | 70 | 930 | 880 | 165 | 4.1 |
The contrast of table 6 concrete performance
Conclusion: the artificial sand 100% that the particle building stones form replaces natural river sand, and the concrete of preparation all can meet the demands at the slump, divergence and slump-loss, and the intensity in concrete each length of time satisfies national standard.
The Dinas brickes test-results: the stone flour slip that utilizes the one-level deposition to obtain replaces 10% natural sand, produces Dinas brickes contrast properties such as table 7.
Table 7 Dinas brickes performance comparison
| The aggregate kind | Intensity (MPa) | Unit weight (Kg/M 3) | Remarks |
| Natural sand | 17.4 | 2483 | |
| One-level deposition slip | 16.8 | 2456 |
Conclusion: utilize the stone flour slip to replace 10% natural sand, the product strength of production and unit weight all satisfy M15 level product national standard.
The gas concrete test-results: the stone flour and the shale component slip that utilize two-stage precipitation to obtain replace the levigate slip of 30% natural sand, production aerating concrete contrast properties such as table 8.
Table 8 aerating concrete performance comparison
| The slip kind | Intensity (MPa) | Unit weight (Kg/M 3) | Remarks |
| The levigate slip of natural sand | 4.2 | 619 | |
| The two-stage precipitation slip | 4.0 | 603 |
Conclusion: utilize stone flour and shale component slip to replace 30% natural sand, production aerating concrete all satisfies 600 grades of product national standards on intensity and unit weight.
Embodiment two
1, stone flour basal conditions
Auspicious extra large stone ore is positioned at Nan Si farm, Sanya, Hainan, belongs to the grouan stone ore, 1,800,000 tons of yearly capacities, and 550,000 tons of year stone flour quantity dischargeds, the stone flour fundamental property is as shown in table 9.
The auspicious extra large stone ore stone flour size distribution of table 9 (%) unit: mm
| Specification | ≥5 | 5-2.5 | 2.5-1,25 | 1.25-0.63 | 0.63-0.31 | 0,31-0.16 | 0.16-0.08 | ≤0.08 | Silt content |
| Content | 0-2 | 16-18 | 13-16 | 10-14 | 12-15 | 9-11 | 12-14 | 12-14 | 1.4-63 |
2, the unit type of selecting for use
Charging belt: 1 meter of width, long 12 meters;
Sand washer: model XL screw sand washer, blade diameter 1500mm, washed-out sand slot length 8500mm, 22 kilowatts of power, 21 rev/mins of rotating speeds.
Outfeed belt: 1 meter of width, long 15 meters;
One-level settling tank, second-level settling pond: long: 6000mm, wide: 2200mm, height: 1900mm, each settling tank join 2 of spiral propellers, 11 kilowatts of total powers.
The part by weight of water and mine stone flour: 0.75: 1; 12 rev/mins of screw machine rotating speeds.
3, stage treatment
The stage treatment process is with embodiment one.
The analytical results of gained particle building stones, stone flour slip, stone flour and shale component slip is shown in table 10, table 11, table 12.
Table 10 particle building stones analytical resultss (%)
| Size of mesh (mm) | 4.75 | 2.36 | 1.15 | 0.6 | 0.30 | 0.15 | 0.075 | Silt content |
| Accumulative total tails over (%) | 1.4 | 20.7 | 39.7 | 60.7 | 77.6 | 93.6 | 99.4 | 0.2 |
| National standard | 0-10 | 0-25 | 10-50 | 41-74 | 70-92 | 90-100 | 90-100 |
Table 11 stone flour pulp particle distribution (%) water cut 38%
| Greater than 0.315mm | 0.315-0.15mm | 0.15-0.08mm | Less than 0.08mm | Silt content % |
| 1.0 | 2.1 | 83.0 | 10.3 | 3.6 |
Table 12 stone flour and shale component slip size distribution (%) water cut 50%
| Greater than 0.315mm | 0.315-0.15mm | 0.15-008mm | Less than 0.08mm | Silt content % |
| ?0 | 1.0 | 12.6 | 76.4 | 10.1 |
4, experiment
The concrete test result: utilize natural river sand and particle building stones contrast having carried out concrete test, stone flour 100% replaces natural sand, uses the natural sand modulus to be: 2.7, and silt content is: 1.7%.Its result such as table 13, table 14.
Table 13 concrete mix (C30)
| The aggregate kind | Cement | Breeze | Flyash | Coarse aggregate | Fine aggregate | Water | Admixture | Remarks |
| Natural sand | 220 | 80 | 70 | 930 | 880 | 165 | 4.1 | |
| Stone flour | 220 | 80 | 70 | 930 | 880 | 165 | 4.1 |
The contrast of table 14 concrete performance
Conclusion: the artificial sand 100% that the particle building stones form replaces natural river sand, and the concrete of preparation all can meet the demands at the slump, divergence and slump-loss, and the intensity in concrete each length of time satisfies national standard.
The Dinas brickes test-results: the stone flour slip that utilizes the one-level deposition to obtain replaces 10% natural sand, produces Dinas brickes contrast properties such as table 15.
Table 15 Dinas brickes performance comparison
| The aggregate kind | Intensity (MPa) | Unit weight (Kg/M 3) | Remarks |
| Natural sand | 17.4 | 2483 | |
| One-level deposition slip | 17.1 | 2465 |
Conclusion: utilize the stone flour slip to replace 10% natural sand, the product strength of production and unit weight all satisfy M15 level product national standard.
The gas concrete test-results: the stone flour and the shale component slip that utilize two-stage precipitation to obtain replace the levigate slip of 30% natural sand, production aerating concrete contrast properties such as table 16.
Table 16 aerating concrete performance comparison
| The slip kind | Intensity (MPa) | Unit weight (Kg/M 3) | Remarks |
| Natural sand | 4.2 | 619 | |
| The two-stage precipitation slip | 4.1 | 608 |
Conclusion: utilize stone flour and shale component slip to replace 30% natural sand, production aerating concrete all satisfies 600 grades of product national standards on intensity and unit weight.
The sand washer that this patent relates to; The sand washer of all various models all is suitable for; The particle building stones that obtain after the processing are applicable to various label concrete, and I and II deposition slip is applicable to the Dinas brickes and the gas concrete of various labels, does not enumerate one by one at this; Each processing parameter bound value of the present invention all can realize the present invention, does not enumerate one by one at this.
Claims (6)
1. comprehensive utilization method after three grades of stage treatment of a mine stone flour; It is characterized in that by weight water and mine stone flour are mixed in 0.4: 1～0.8: 1 ratio, through rotating speed be 15～25 rev/mins washed-out sand equipment clean obtain silt content less than 1%, grain composition reaches the particle building stones of artificial sand standard; The slurry that cleans out is handled through the two-stage precipitation fractionation: it is that 0.15mm～0.08mm, water cut are 35～45% stone flour slip that first step deposition obtains most of particle diameter; Second stage deposition obtain most of particle diameter below 0.08mm, water cut is 40～60% stone flour and shale component slip.
2. method of comprehensive utilization according to claim 1 is characterized in that: the stone flour slip that said first step deposition obtains is used for the amount of Dinas brickes replacement natural sand below 20%.
3. method of comprehensive utilization according to claim 1 is characterized in that: stone flour and shale component slip that said second stage deposition obtains replace levigate sand slip below 35%.
4. equipment that is used for three grades of stage treatment of the described mine of claim 1 stone flour; It is characterized in that: comprise feed belt machine, outfeed belt machine, sand washer, one-level settling tank, second-level settling pond, feed belt machine, outfeed belt machine link to each other with inlet, the outlet of sand washer respectively; One-level settling tank, second-level settling pond are divided into kiln basin and settling tank with dividing plate respectively, in the bottom of settling tank spiral propeller are set; The one-level settling tank is with between sand washer is connected, pass through pipe connection between one-level settling tank and the second-level settling pond.
5. equipment according to claim 4 is characterized in that: the rotating speed of said spiral propeller is 5～30 rev/mins.
6. equipment according to claim 4 is characterized in that: be provided with agitating vane in the said kiln basin.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108042376A (en) * | 2017-12-26 | 2018-05-18 | 湖南御家化妆品制造有限公司 | Mica mud and its preparation method and application |
| CN108267542A (en) * | 2016-12-30 | 2018-07-10 | 河北福威建材科技有限公司 | Natural sand detects programmable integrated process |
| CN115178013A (en) * | 2022-08-23 | 2022-10-14 | 水口山有色金属有限责任公司 | Muddy water sand recovery system and method in ore grinding and classification process |
| CN116003045A (en) * | 2022-06-01 | 2023-04-25 | 琼海鑫海混凝土有限公司 | High-strength impervious concrete and preparation method thereof |
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| CN1686897A (en) * | 2005-05-11 | 2005-10-26 | 孔祥清 | Lactescent gunite material for supports of mine and construction method for guniting supports |
| CN101664715A (en) * | 2009-09-16 | 2010-03-10 | 中国瑞林工程技术有限公司 | Ore-dressing technique capable of effectively improving comprehensive utilization rate of mine resources |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1063828A (en) * | 1991-02-08 | 1992-08-26 | 吴泉兴 | A kind of ore pulverizer |
| CN1686897A (en) * | 2005-05-11 | 2005-10-26 | 孔祥清 | Lactescent gunite material for supports of mine and construction method for guniting supports |
| CN101664715A (en) * | 2009-09-16 | 2010-03-10 | 中国瑞林工程技术有限公司 | Ore-dressing technique capable of effectively improving comprehensive utilization rate of mine resources |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108267542A (en) * | 2016-12-30 | 2018-07-10 | 河北福威建材科技有限公司 | Natural sand detects programmable integrated process |
| CN108042376A (en) * | 2017-12-26 | 2018-05-18 | 湖南御家化妆品制造有限公司 | Mica mud and its preparation method and application |
| CN108042376B (en) * | 2017-12-26 | 2020-12-01 | 湖南御家化妆品制造有限公司 | Mica slurry and preparation method and application thereof |
| CN116003045A (en) * | 2022-06-01 | 2023-04-25 | 琼海鑫海混凝土有限公司 | High-strength impervious concrete and preparation method thereof |
| CN115178013A (en) * | 2022-08-23 | 2022-10-14 | 水口山有色金属有限责任公司 | Muddy water sand recovery system and method in ore grinding and classification process |
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Effective date of registration: 20210521 Address after: 570100 office building of Hainan Ruize new building materials Co., Ltd., Yacheng town Creative Industry Park, Yazhou District, Sanya City, Hainan Province Patentee after: Sanya Ruize renewable resources utilization Co.,Ltd. Address before: No. 488, Yingbin Avenue, Tiandu Town, Sanya City, Hainan Province Patentee before: HAINAN RUIZE NEW BUILDING MATERIAL Co.,Ltd. |
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