CN106186748A - The recycling system of a kind of industrial waste carbide slag and recoverying and utilizing method - Google Patents
The recycling system of a kind of industrial waste carbide slag and recoverying and utilizing method Download PDFInfo
- Publication number
- CN106186748A CN106186748A CN201610742054.4A CN201610742054A CN106186748A CN 106186748 A CN106186748 A CN 106186748A CN 201610742054 A CN201610742054 A CN 201610742054A CN 106186748 A CN106186748 A CN 106186748A
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- China
- Prior art keywords
- carbide slag
- carbide
- plate type
- type pressure
- recycling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002893 slag Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004064 recycling Methods 0.000 title claims abstract description 19
- 239000002440 industrial waste Substances 0.000 title claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 52
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 238000000227 grinding Methods 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 17
- 238000001556 precipitation Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 claims description 3
- 235000019738 Limestone Nutrition 0.000 abstract description 6
- 239000006028 limestone Substances 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000012054 meals Nutrition 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses recycling system and the recoverying and utilizing method of a kind of industrial waste carbide slag, it is characterised in that: recycling system includes passing sequentially through primary sedimentation basin, secondary sedimentation tank, concentration basin, slurry storehouse and the plate type pressure filter that Pulp pump connects；Plate type pressure filter through high inclination-angle drag conveyor be connected to raw material vertical-grinding enter to grind belt；Utilize this system through precipitation, concentration, filter pressing and to be produced other raw material intergrindings of cement, dry and calcine by carbide slag slurries, i.e. obtain clinker.The strength of cement using the present invention to prepare is high, and the present invention not only reduces exploitation and the CO of non-renewable limestone resource2Discharge, reduce manufacture of cement cost, also solve the problem of environmental pollution that industrial electro rock ballast brings.
Description
Technical field
The present invention relates to recycling system and the recoverying and utilizing method of industrial waste carbide slag.
Background technology
Acetylene (C2H2) gas is one of important source material of basic organic synthesis industry, add water production acetylene with carbide for raw material
The technique of gas is the most ripe, at present at the proportion that China's occupation ratio is bigger.Carbide slag is carbide (CaC2) hydrolysis acquisition acetylene gas
After the industrial residue with calcium hydroxide as main component.1 ton of carbide hydrolysis about generates 10 tons of carbide slag mass content about
The industrial wastes of 12%, is commonly called as carbide slag slurries.China's most enterprises is exhausted directly to seawall or mountain carbide slag slurries all the time
Gu Zhong, fills out sea and fills out the well-regulated stacking of ditch, and this kind of way does not does Anti-seeping technology, and floor space is big, environmental pollution
Seriously.Therefore, the integrated treatment of carbide slag is extremely urgent.
Utilize carbide slag to provide calcareous raw material to replace limestone to produce cement, be the most domestic to carbide slag comprehensive utilization ratio
More ripe technique, is also to carbide slag utilization maximum approach the most thoroughly.Not only save non-renewable limestone resource,
And make carbide slag be comprehensively utilized, eliminate the carbide slag destruction to environment, reduce carbon dioxide discharge, become give up into
Precious.The whole nation has many production lines running according to investigations, but the commonly used wet processing of production technology, namely directly use aqueous
Measuring the highest carbide slag slurries and calcine acquisition cement in shaft kiln with other raw materials, this process energy consumption is the highest, the water obtained
Mud intensity is low.
Summary of the invention
The present invention is for avoiding the weak point existing for above-mentioned prior art, it is provided that a kind of industrial waste carbide slag
Recycling system and recoverying and utilizing method, it is intended to improve the utilization rate of carbide slag, reduce the production cost of cement.
The present invention solves technical problem, adopts the following technical scheme that
First the present invention discloses the recycling system of a kind of industrial waste carbide slag, and its construction features is:
Described recycling system include passing sequentially through primary sedimentation basin that Pulp pump connects, secondary sedimentation tank, concentration basin,
Slurry storehouse and plate type pressure filter；Described plate type pressure filter through high inclination-angle drag conveyor be connected to raw material vertical-grinding enter to grind belt.
The setting height(from bottom) of each parts reduces successively.
Described primary sedimentation basin is provided with stock inlet.
The stock inlet side of described plate type pressure filter is provided with gas hole.
Described high inclination-angle drag conveyor totally two, First is arranged at the blanking of described plate type pressure filter, second
It is arranged on First and enters to grind between belt.
Utilize the recoverying and utilizing method of the industrial waste carbide slag of above-mentioned recycling system, comprise the steps:
(1) precipitation
Carbide slag slurries is introduced primary sedimentation basin and carries out primary sedimentation process, squeeze into secondary precipitation by Pulp pump the most again
Pond carries out secondary precipitation process (Ca (OH)2Particulate deposits is got off), form carbide slag slurries after precipitation；The clear liquid of secondary sedimentation tank overflows
Flow into collecting-tank, in practice it has proved that the technological requirement of carbide reaction within the clear liquid of secondary precipitation meets acetylene generator, can be by
It is in the acetylene gas with carbide as raw material produces so that water resource is recycled, saving water resource.
(2) concentrate
After described precipitation, carbide slag slurries squeezes into concentration basin through Pulp pump, carries out concentration, forms carbide slag slurries after concentrating；
After described concentration, carbide slag slurries squeezes into slurry storehouse through Pulp pump；After described concentration, the water content of carbide slag slurries is 65%～70%.
(3) filter pressing
After described concentration in slurry storehouse, carbide slag slurries is in Pulp pump squeezes into plate type pressure filter, carbide slag slurries after concentration
In moisture content discharge further after filter-cloth filtering, carbide slag slurries moisture is more and more less, is gradually shaped to pie between sheet frame；So
After pressure filter compress just at the end of, utilize pressure-air that the carbide slag in plate type pressure filter is blown 3 minutes so that
Carbide slag slurries is dehydrated further, it is thus achieved that a carbide blob of slag；The water content of a carbide blob of slag is 30%～40%.
(4) grinding, drying
A described carbide blob of slag is transported to entering of raw material vertical-grinding through high inclination-angle drag conveyor after metering and grinds on belt, with
Other raw materials (limestone, iron powder, clay) in manufacture of cement enter raw material vertical-grinding together and carry out grinding, drying, it is thus achieved that cement
Raw material；
The metering of a carbide blob of slag is controlled by the operating frequency of plate type pressure filter, i.e. drawing by plate pulling trolley of filter press
The conveying capacity of plate speed controlling carbide slag charge cake, reaches the effect of raw meal proportioning.
Drying is to be completed by the waste gas of 180～220 DEG C sent here from the kiln tail of new dry process nsp kiln, reduces raw material
The water consumption of Vertical Mill.
(5) calcining
Enter new dry process nsp kiln after the metering of described cement slurry homogenized storehouse to calcine, it is thus achieved that clinker.
Compared with prior art, beneficial effects of the present invention is embodied in:
1, the recycling system of the present invention can be with continuous automatic production；The height that every equipment component is installed drops successively
Low, so can save power, economical and practical；Plate type pressure filter can regulate yield according to dispensing demand；High inclination angle conveyer
Can dehydration further to carbide slag.
2, the present invention makes the carbide slag of industrial waste sufficiently be recycled, it is to avoid the carbide slag dirt to environment
Dye, decreases the Limestone mining destruction to environment in manufacture of cement, decreases use raw meal prepared from lime when preparing cement simultaneously
CO2Discharge capacity, reduces the production cost of cement；
3, the moisture in carbide slag slurries is reduced to reach the condition of calcining by the present invention, it is to avoid directly drawn by carbide slag slurries
Enter calcined by rotary kiln, reduce energy consumption.
4, technological process used in the present invention is simple, and operation stability is high.
5, the present invention utilizes the time of press filter plate drawing to control the yield of carbide slag, saves measuring equipment, reduces investment
Cost, simplification of flowsheet.
6, the present invention utilize pressure-air to solve fracture and whitewashing problem that carbide slag adhesion causes so that pressure filter
Upper carbide slag discharging is smooth and easy, it is to avoid runs well because plate type pressure filter intermittent operation affects rotary kiln, meets automatic metaplasia
Produce requirement, save manpower, improve automaticity.
7, the present invention is provided with two high inclination-angle drag conveyors, can dry carbide slag further, this conveying
Machine simple in construction, reliable, easy to maintenance, more can carry by high inclination-angle, compact conformation, floor space is few.
Accompanying drawing explanation
Fig. 1 is the structural representation of recycling system of the present invention；
Label in figure: 1 primary sedimentation basin；1a stock inlet；2 secondary sedimentation tanks；3 concentration basins；4 slurry storehouses；5 board-like filter pressings
Machine；5a gas hole；6 high inclination-angle drag conveyors；7 enter to grind belt；8 Pulp pump.
Detailed description of the invention
As it is shown in figure 1, the recycling system of industrial waste carbide slag, including passing sequentially through the one of Pulp pump 8 connection
Secondary sedimentation tank 1, secondary sedimentation tank 2, concentration basin 3, slurry storehouse 4 and plate type pressure filter 5；Plate type pressure filter 5 is defeated through high inclination-angle scraper plate
Send what machine 6 was connected to raw material vertical-grinding to enter to grind belt 7.
Primary sedimentation basin 1 is provided with stock inlet 1a.
The stock inlet side of plate type pressure filter 5 is provided with gas hole 5a.
High inclination-angle drag conveyor 6 totally two, First is arranged at the blanking of plate type pressure filter 5, and second is arranged on
First and enter to grind between belt 7.
Utilize the recoverying and utilizing method of the industrial waste carbide slag of above-mentioned recycling system, comprise the steps:
(1) precipitation
Carbide slag slurries is introduced primary sedimentation basin and carries out primary sedimentation process, squeeze into secondary precipitation by Pulp pump the most again
Pond carries out secondary precipitation process (Ca (OH)2Particulate deposits is got off), form carbide slag slurries after precipitation；The clear liquid of secondary sedimentation tank overflows
Flow into collecting-tank；Facts have proved that the clear liquid through secondary precipitation meets the technological requirement of carbide reaction in acetylene generator, can be by
It is in the acetylene production with carbide as raw material so that water resource is recycled, saving water resource.
(2) concentrate
After precipitation, carbide slag slurries squeezes into concentration basin through Pulp pump, carries out concentration, forms carbide slag slurries after concentrating；Concentrate
Rear carbide slag slurries squeezes into slurry storehouse through Pulp pump；After concentration, the water content of carbide slag slurries is 65%～70%.
(3) filter pressing
After concentration in slurry storehouse, carbide slag slurries is in Pulp pump squeezes into plate type pressure filter, after concentration in carbide slag slurries
Moisture content is discharged after filter-cloth filtering further, and carbide slag slurries moisture is more and more less, is gradually shaped to pie between sheet frame；For solving
Fracture that plate type pressure filter discharging the most totally causes and whitewashing problem, at the end of pressure filter work just, utilize pressure-air
Carbide slag in board-like filter pressing is blown, so that carbide slag slurries is dehydrated further, it is thus achieved that a carbide blob of slag；Containing of a carbide blob of slag
The water yield is 30%～40%.
(4) grinding, drying
A carbide blob of slag is transported to entering of raw material vertical-grinding through high inclination-angle drag conveyor after metering and grinds on belt, and for water
Other raw materials (limestone, iron powder, clay) that mud produces enter raw material vertical-grinding together and carry out grinding, drying, it is thus achieved that cement slurry；
The metering of a carbide blob of slag is controlled by the operating frequency of plate type pressure filter, i.e. drawing by plate pulling trolley of filter press
The conveying capacity of plate speed controlling carbide slag charge cake, reaches the effect of raw meal proportioning.
Drying is to be completed by the waste gas of 180～220 DEG C sent here from kiln tail, reduces the water consumption of raw material vertical-grinding.
(5) calcining
Enter new dry process nsp kiln after the metering of cement slurry homogenized storehouse to calcine, it is thus achieved that clinker.
Drag conveyor has certain inclination angle, and the carbide slag moisture of entrance raw material vertical-grinding can be made to reduce further.
Grinding, drying are carried out together, it is possible to reduce energy consumption, cost-effective, reduce equipment usage amount, simplify carbide slag
Drying process.
The cement consumption per ton coal 88kg utilizing the present invention to produce, three days comprcssive strength of clinker reaches 30Mpa.
Claims (10)
1. the recycling system of an industrial waste carbide slag, it is characterised in that:
Described recycling system includes passing sequentially through primary sedimentation basin (1) that Pulp pump (8) connects, secondary sedimentation tank (2), dense
Contracting pond (3), slurry storehouse (4) and plate type pressure filter (5)；Described plate type pressure filter (5) is connected to through high inclination-angle drag conveyor (6)
Raw material vertical-grinding enter to grind belt (7).
Recycling system the most according to claim 1, it is characterised in that: it is provided with on described primary sedimentation basin (1)
Stock inlet (1a).
Recycling system the most according to claim 1, it is characterised in that: at the stock inlet of described plate type pressure filter (5)
Side is provided with gas hole (5a).
Recycling system the most according to claim 1, it is characterised in that: described high inclination-angle drag conveyor (6) totally two
Platform, First is arranged at the blanking of described plate type pressure filter (5), and second is arranged on First and enters to grind between belt (7).
5. the returning of the industrial waste carbide slag of the recycling system utilized in claim 1～4 described in any one
Receive Application way, it is characterised in that comprise the steps:
(1) precipitation
Carbide slag slurries is introduced primary sedimentation basin and carries out primary sedimentation process, squeeze into secondary sedimentation tank by Pulp pump the most again and enter
Row secondary precipitation processes, and forms carbide slag slurries after precipitation；The clear liquid overflow of secondary sedimentation tank enters collecting-tank；
(2) concentrate
After described precipitation, carbide slag slurries squeezes into concentration basin through Pulp pump, carries out concentration, forms carbide slag slurries after concentrating；Described
After concentration, carbide slag slurries squeezes into slurry storehouse through Pulp pump；
(3) filter pressing
After described concentration in slurry storehouse, carbide slag slurries is in Pulp pump squeezes into plate type pressure filter, after concentration in carbide slag slurries
Moisture content is discharged after filter-cloth filtering further, and carbide slag slurries is gradually shaped to pie between sheet frame；Then pressure-air pair is utilized
Carbide slag in plate type pressure filter is blown, so that carbide slag slurries is dehydrated further, it is thus achieved that a carbide blob of slag；
(4) grinding, drying
A described carbide blob of slag is transported to entering of raw material vertical-grinding through high inclination-angle drag conveyor after metering and grinds on belt, and for water
Other raw materials that mud produces enter raw material vertical-grinding together and carry out grinding, drying, it is thus achieved that cement slurry；
(5) calcining
Enter new dry process nsp kiln after the metering of described cement slurry homogenized storehouse to calcine, it is thus achieved that clinker.
Method the most according to claim 5, it is characterised in that: in step (1), the clear liquid of secondary sedimentation tank is for carbide
For in the acetylene gas production of raw material.
Method the most according to claim 5, it is characterised in that: after described concentration the water content of carbide slag slurries be 65%～
70%.
Method the most according to claim 5, it is characterised in that: the water content of a described carbide blob of slag is 30%～40%.
Method the most according to claim 5, it is characterised in that: the metering of a described carbide blob of slag the work by plate type pressure filter
Working frequency controls.
Method the most according to claim 5, it is characterised in that: the drying in step (4) is by 180 sent here from kiln tail
～the waste gas of 220 DEG C completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610742054.4A CN106186748B (en) | 2016-08-26 | 2016-08-26 | A kind of recycling system and recoverying and utilizing method of industrial waste carbide slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610742054.4A CN106186748B (en) | 2016-08-26 | 2016-08-26 | A kind of recycling system and recoverying and utilizing method of industrial waste carbide slag |
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| Publication Number | Publication Date |
|---|---|
| CN106186748A true CN106186748A (en) | 2016-12-07 |
| CN106186748B CN106186748B (en) | 2018-07-27 |
Family
ID=57526983
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| CN201610742054.4A Active CN106186748B (en) | 2016-08-26 | 2016-08-26 | A kind of recycling system and recoverying and utilizing method of industrial waste carbide slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609188A (en) * | 2018-11-27 | 2019-04-12 | 中国成达工程有限公司 | Wet process acetylene calcium carbide residues processing technique |
| CN109663392A (en) * | 2019-02-14 | 2019-04-23 | 陕西金泰氯碱化工有限公司 | A kind of process that carbide slag slurries are separated by solid-liquid separation |
| CN114470955A (en) * | 2021-12-27 | 2022-05-13 | 安徽华塑股份有限公司 | Process for preparing efficient desulfurizer by deep purification treatment of carbide slag |
| CN115716649A (en) * | 2022-11-25 | 2023-02-28 | 安徽华塑股份有限公司 | Method for producing calcium carbide by recycling calcium carbide slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109663392A (en) * | 2019-02-14 | 2019-04-23 | 陕西金泰氯碱化工有限公司 | A kind of process that carbide slag slurries are separated by solid-liquid separation |
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| CN115716649A (en) * | 2022-11-25 | 2023-02-28 | 安徽华塑股份有限公司 | Method for producing calcium carbide by recycling calcium carbide slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106186748B (en) | 2018-07-27 |
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Denomination of invention: A recycling system and method for industrial waste carbide slag Effective date of registration: 20231120 Granted publication date: 20180727 Pledgee: Industrial and Commercial Bank of China Limited Chaohu sub branch Pledgor: ANHUI WANWEI UPDATED HIGH-TECH MATERIAL INDUSTRY Co.,Ltd. Registration number: Y2023980066345 |
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