CN108246428A - The sandstone separation method and device of waste concrete - Google Patents
The sandstone separation method and device of waste concrete Download PDFInfo
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- CN108246428A CN108246428A CN201810050298.5A CN201810050298A CN108246428A CN 108246428 A CN108246428 A CN 108246428A CN 201810050298 A CN201810050298 A CN 201810050298A CN 108246428 A CN108246428 A CN 108246428A
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- waste concrete
- ball milling
- side wall
- milling cylinder
- sand
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- 239000002699 waste material Substances 0.000 title claims abstract description 121
- 239000004567 concrete Substances 0.000 title claims abstract description 109
- 238000000926 separation method Methods 0.000 title claims abstract description 49
- 238000000498 ball milling Methods 0.000 claims abstract description 88
- 239000004576 sand Substances 0.000 claims abstract description 52
- 239000004575 stone Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005345 coagulation Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000008139 complexing agent Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 51
- 230000000694 effects Effects 0.000 description 9
- 239000011449 brick Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 235000019738 Limestone Nutrition 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000003701 mechanical milling Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 2
- 239000011499 joint compound Substances 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/02—Codes relating to disintegrating devices adapted for specific materials for reinforced concrete
Abstract
The invention discloses the sandstone separation methods and device of a kind of waste concrete, the sandstone separation method includes pretreated waste concrete being put into ball milling cylinder carrying out ball milling, obtain waste concrete ball-milled mixtures, then stone, sand and scrap rubber gel material powder are sieved into, realizes the sandstone separation of waste concrete；The both ends end face seal of ball milling cylinder, ball milling cylinder include the first side wall and second sidewall of two planes, and the first side wall is mutually parallel with second sidewall.Sand-gravel separation device includes ball milling cylinder and drives the rotation driving of ball milling cylinder rotation.The method and device of the present invention can efficiently utilize waste concrete, and mass and natural sand stone or the essentially identical sandstone of manual sandstone are detached from waste concrete, have important practical significance and commercial value.
Description
Technical field
The invention belongs to waste reclamations and building materials technology field, and in particular to a kind of sandstone separation side of waste concrete
Method and device.
Background technology
Building waste refers to that people are engaged in the slag generated in the production activity of the construction industries such as removal, construction, finishing, repairerment
Soil, waste concrete, waste and old masonry and other wastes general designation, wherein waste concrete is averaged accounting about 30%, high level built
The removal of object is built, waste concrete accounts for more than 50%, the demolition for bridge, and building waste almost all therein is useless coagulation
Soil.
The quantity of Chinese architecture rubbish has accounted for more than 1/3 municipal refuse total amount, for house refuse, can be used and burns
The minimizing processing of the methods of burning, compost or compression reduce its volume, even landfill, can also decompose, building waste in several years
The above method can not be used to handle, China generates 2,400,000,000 tons of building waste, and increases year by year within 2014, at present mainly with outdoor heap
It puts or landfill disposal, this processing mode not only occupies a large amount of soils, but also polluted environment, seriously jeopardizes the life of the mankind
It deposits, is environmental protection to building waste recycling, the preferred approach that economizes on resources therefore.However, the current building waste in China
Reuse ratio only 5%, main application mode are：(1) make building blinding layer or road cushion；(2) production is mixed after crushing
Solidifying cob brick block；(3) aggregate is made through crushing, shaping, sieving in waste concrete, useless brick etc. and substitutes sandstone.First method consumes
Amount is very little, is an utterly inadequate amount for the building waste of flood tide, and second method need to consume cement, and manufactured brick quality
Difference is only used for requiring low place, the third method is the maximum application mode of current building waste, but by building waste system
Into aggregate its performance crush the manual sandstone being processed into much worse than natural sand stone and by the straight muscle of stone, many Important buildings are (such as
Highway, skyscraper, bridge etc.) do not allow to use, limit its application.
Waste concrete is a huge treasure-house, and more than 60% is sand and stone in waste concrete, if can will be useless mixed
Sand and stone in solidifying soil are separated, then the quality of this sand separated and stone is with natural sand stone and by stone
The manual sandstone directly manufactured is essentially identical, can generate huge economic benefit and environmental benefit.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, providing a kind of can efficiently utilize useless coagulation
Soil detaches mass and natural sand stone or by the essentially identical sandstone of manual sandstone that stone directly manufactures from waste concrete
The sandstone separation method and device of waste concrete.
In order to solve the above technical problems, the present invention uses following technical scheme.
A kind of sandstone separation method of waste concrete, the method includes pretreated waste concrete is put into ball grinding cylinder
Ball milling is carried out in body, obtains waste concrete ball-milled mixtures, then by waste concrete ball-milled mixtures be sieved into stone, sand and
Scrap rubber gel material powder realizes the sandstone separation of waste concrete；
The ball milling cylinder both ends end face seal, the ball milling cylinder include the first side wall and the second side of two planes
Wall, the first side wall are mutually parallel with second sidewall.
In the sandstone separation method of above-mentioned waste concrete, it is preferred that the ball milling cylinder has four side walls, respectively
The first side wall, second sidewall, third side wall and the 4th side wall, if the vertical range between the first side wall and second sidewall is H, the
Average distance between three side walls and the 4th side wall is L, then H: L=1: 1.5~20；
And/or the rotating speed of the ball milling is 10rpm~30rpm.
In the sandstone separation method of above-mentioned waste concrete, it is furthermore preferred that described H: L=1: 4~8；And/or the ball
The rotating speed of mill is 15rpm~25rpm.
In the sandstone separation method of above-mentioned waste concrete, it is preferred that the stone that screening obtains is put into cleaning solution and is stirred
It mixes or is put into and rotated in general milling machine without abrasive body, remove the scrap rubber gel material slurry of stone surface；It will sieve
To sand be put into cleaning solution and stir, the scrap rubber gel material slurry of dissolving sand surface attachment；
The cleaning solution include with scrap rubber gel material slurry react generate soluble-salt acid solution or with scrap rubber gel material
The complexing agent of the soluble complex salt of slurry reaction generation.
In the sandstone separation method of above-mentioned waste concrete, it is preferred that it is molten that the acid solution includes hydrochloric acid solution, nitric acid
It is one or more in liquid, formic acid solution and acetic acid solution；
And/or liquid is reused after precipitation after the cleaning obtained after cleaned liquid washing.
In the sandstone separation method of above-mentioned waste concrete, it is preferred that in the ball milling cylinder using diameter 20mm~
For the steel ball of 150mm as abrasive body, the time of the ball milling is 2h~8h；
And/or the pretreatment includes procedure below：It first sub-elects waste concrete block and component and removes impurity removing, it will be useless
Concrete block and component, which are done to dissipate, removes reinforcing bar, and the waste concrete block sub-elected is broken into fritter waste concrete, is pre-processed
Waste concrete afterwards.
The technical concept total as one, the present invention also provides a kind of sand-gravel separation device of waste concrete, including ball milling
Cylinder and the rotation driving of driving ball milling cylinder rotation, the ball milling cylinder both ends end face seal, the ball milling cylinder include
The first side wall and second sidewall of two planes, the first side wall are mutually parallel with second sidewall.
In the sand-gravel separation device of above-mentioned waste concrete, it is preferred that the ball milling cylinder has four side walls, respectively
The first side wall, second sidewall, third side wall and the 4th side wall, if the vertical range between the first side wall and second sidewall is H, the
Average distance between three side walls and the 4th side wall is L, then H: L=1: 1.5~20.
In the sand-gravel separation device of above-mentioned waste concrete, it is preferred that described H: L=1: 4~8.
In the sand-gravel separation device of above-mentioned waste concrete, it is preferred that the rotation driving includes shaft, retarder and electricity
Motivation, the shaft are connected by retarder with motor, and the ball milling cylinder is placed in shaft and is fixedly connected with shaft, institute
The lower section for stating ball milling cylinder is equipped with pedestal, and the pedestal, which is equipped with to be used to support, turns shaft support；
The inner wall of the ball milling cylinder is equipped with liner plate, and the side wall of the ball milling cylinder is equipped with feed inlet and outlet and for controlling
The disengaging bin gate of feed inlet and outlet opening and closing, is mounted with abrasive body in the ball grinding cylinder body.
The main innovation point of the present invention is：
The sandstone separation method and device of the waste concrete of the present invention mainly employ the ball milling cylinder of special construction, the ball
Grinding cylinder includes the side wall of two planes, and the side wall of two planes is mutually parallel, and comes with existing common cylindrical shape ball milling cylinder
Ball milling waste concrete has visibly different principle.Existing cylindrical shape ball milling cylinder be make stone in waste concrete, sand and
Cementitious material circumferentially moves jointly with abrasive body, and abrasive body rises higher since centrifugal force is big, and abrasive body is fallen from eminence
Under pound to following waste concrete so that whole waste concretes including stone and sand are ground together, and separation is not achieved
Go out the purpose of sandstone.And the ball milling cylinder of the present invention can make waste concrete and abrasive body due to the structure design of two parallel sides
It liquidates back and forth in rotation process, it is often more important that, abrasive body and stone, sand and the cementitious material base in waste concrete can be made
This synchronization, abrasive body and waste concrete leave the stone higher to hardness and strength in waste concrete and sand not from eminence jointly
Pulverization is played, only by wastewater slurry, coal ash pulp, the relatively low cementitious material powder of silicon ash slurry equal strength hardness in waste concrete
It is broken, play the role of isolating sand and stone from waste concrete.In the prior art, those skilled in the art generally chase after
What is asked is to improve the grinding uniformity, and the present invention is then on the contrary, the selectivity for focusing on generating by ball milling cylinder of the present invention
Crushing effect come realize the sandstone in waste concrete detach.
Present invention preferably employs flat-shaped cylinder, and preferably using four side walls, one of which opposite is mutually parallel, another group
Opposite can be parallel, also can be not parallel, may also be fabricated which curved surface, the distance on two parallel opposites and the ratio of distances constant on another group of opposite are 1:
1.5~20, more preferable 1: 4~8, under the designing scheme, impact force can be preferably controlled, so as to which above-mentioned choosing be better achieved
Selecting property crushing effect.
The rotating speed of preferred control ball milling of the invention is 10rpm~30rpm, more preferable 15rpm~25rpm, similarly, at this
Impact force can be preferably controlled under rotating speed, prevents abrasive body and waste concrete excessive without falling and abrasive body due to centrifugal force
Highest order is not risen to since centrifugal force is too small with waste concrete just slowly to fall along parallel plane, preferably controls mechanical milling process
Selective molecular attraction effect.
Based on technical scheme of the present invention so that the crushing effect of the sand-gravel separation device of waste concrete of the invention is with showing
Some cylindrical shape ball milling cylinders are entirely different, and the present invention is the glue crushed under impact force action again and again in waste concrete
Gel material simultaneously removes the stone in waste concrete and the gel rubber material of sand surface, and what the ball milling cylinder that the present invention designs generated rushes
It hits the power stone higher to hardness and strength in waste concrete and sand does not play pulverization, only by the gelling material in waste concrete
Feed powder is broken, plays the role of isolating sand and stone from waste concrete, and the sand and stone isolated are very clean.
Compared with prior art, the advantage of the invention is that：
1st, the sandstone separation method of waste concrete of the invention and device employ the ball milling cylinder with special construction,
The ball milling cylinder includes the side wall of two planar shapeds, and two flat sidewalls are mutually parallel, and this ball milling tube structure can make ball
Honed journey generates the impact force back and forth of both direction, and makes abrasive body and sand, stone and the cementitious material in waste concrete
Movement basic synchronization, stone that abrasive body is relatively high to hardness and strength and sand is made not to play pulverization, to other hard
Degree and the relatively low ingredient of intensity crush, it is achieved thereby that the sandstone separation in waste concrete.Natural sand stone provides at present
Source is closely exhausted, is directly prepared into that manual sandstone is also restrained, and sandstone is into well sold and in short supply goods and materials, and sandstone quality is increasingly by stone
Difference, and sandstone price is higher and higher, quality and natural sand stone and the artificial sand ground mass of the sandstone isolated from waste concrete
This is identical, on the one hand can exploit sandstone less, save valuable sand and stone resources, waste on the other hand is become well sold and in short supply goods and materials,
It also reduces the handling of rubbish and stacks landfill, have important practical significance and commercial value.
2nd, when ball milling cylinder of the invention has four side walls, the vertical range H between parallel side wall is opposite with another group
1: 1.5~the 20 of the distance between side wall L, under this condition, the effect of selective molecular attraction are more preferable.
3rd, acid solution wash can be used in the stone and sand that sandstone separation method of the invention screens out, and acid solution uses
Hydrochloric acid, nitric acid, formic acid, acetic acid etc. can react the acid of generation soluble-salt (mainly calcium salt, magnesium salts, aluminic acid) with waste concrete,
Can also be used can react the complexing agent (such as part ammonium salt) of the soluble complex salt of generation with waste concrete, by washing, can obtain
Very clean and pure stone and sand, can directly carry out business application.
4th, the present invention in, in order to which selective molecular attraction effect is better achieved, employed in ball milling cylinder diameter 20mm~
The steel ball of 150mm is as abrasive body, but diameter is not limited to this, and the steel column with corner angle can also be used.
5th, sandstone separation method and device using the present invention can make the separating degree of sand reach 85%~90%, stone
Separating degree reach 90%~98%.
Description of the drawings
Fig. 1 is the structure diagram of the sand-gravel separation device of waste concrete in the embodiment of the present invention 3 and embodiment 4.
Fig. 2 is the structure diagram for the ball grinding cylinder body section that the embodiment of the present invention 3 uses.
Fig. 3 is the structure diagram for the ball grinding cylinder body section that the embodiment of the present invention 4 uses.
Marginal data：
1st, ball milling cylinder；2nd, bin gate is passed in and out；3rd, stent；4th, shaft；5th, retarder；6th, motor；7th, pedestal；8th, liner plate.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
Material and instrument employed in following embodiment are commercially available.
Embodiment 1：
A kind of sandstone separation method of the waste concrete of the present invention, includes the following steps：
(1) waste concrete block and component (removing the sundries such as brick, wood, plastics mud) are sub-elected from building waste, is used in combination
Impact or vibration mode are done to dissipate waste concrete bulk and component, isolate reinforcing bar therein, will eliminate the waste concrete of reinforcing bar
Big block, which is put into alligator, is broken into fritter waste concrete, the waste concrete pre-processed.
(2) waste concrete of pretreatment is put into ball milling 2 hours (2~8h) in ball milling cylinder 1, ball milling cylinder 1
Cross section is rectangle, reference can be made to Fig. 2, the 1 both ends end face seal of ball milling cylinder, there are four side walls, respectively first for the tool of ball milling cylinder 1
Side wall, second sidewall, third side wall and the 4th side wall, four side walls are planar structure, and the first side wall and second sidewall are mutual
Parallel, third side wall is mutually parallel with the 4th side wall, the vertical range between the first side wall and second sidewall be H, third side
Vertical range between wall and the 4th side wall is L, H: L=1: 5, the rotating speed of ball milling is 20rpm, and diameter is used in ball milling cylinder 1
Steel ball for 20mm is as abrasive body.In mechanical milling process, ball milling cylinder 1 can make abrasive body relatively high to hardness and strength
Stone and sand do not generate pulverization, only crush cementitious material, so as to obtain waste concrete ball-milled mixtures.
(3) the waste concrete ball-milled mixtures obtained after ball milling are sieved into stone, sand and cementitious material powder, realized
The separation of stone, sand and cementitious material powder.
(4) stone screened out is put into general milling machine and (is not added with the abrasive bodies such as steel ball) rotation 2~6 hours and take out
Wind, to separate the thin layer cementitious material of stone surface slurry.
(5) sand screened out is put into the aqueous hydrochloric acid solution that mass concentration is 5% and stirred 1~4 hour, make sand table
The cementitious material in face is reacted the salts such as the water-soluble calcium chloride of generation, magnesium chloride, aluminium chloride, iron chloride with hydrochloric acid and is removed.
There also is the problem of corrosion sand, for silica sand, due to not reacted with hydrochloric acid, the problem of there is no by hcl corrosion.It is right
In limestone sand, lime stone can be reacted with hydrochloric acid, but lime stone is than the cementitious material densification in concrete much, by hcl corrosion
Speed it is more more slowly than cementitious material, therefore even if having corrosion and surface a thin layer and slight, so, either silica sand is also
It is limestone sand, can be used in pickling, stone can more uses pickling.
(6) spent acid is handled：After aqueous hydrochloric acid solution is reacted with sand, generate a large amount of calcium chloride, magnesium chloride, aluminium chloride,
The chlorides such as iron chloride can be settled out chloride with acid such as sulfuric acid, phosphoric acid, oxalic acid, and reuse spent acid is not outer to be arranged.
In the present invention, containing sandstone 60%~70% in former waste concrete, after sandstone detaches, the separating degree of sand reaches
85%~90%, the separating degree of stone reaches 90%~98%, and the sand and stone isolated are very clean, can directly commercially
Using.
Embodiment 2：
Using method same as Example 1, change univariate parameter, that is, it is respectively H: L=1: 1.5, H to make distinctive points:
L=1: 20, the rotating speed of ball milling is 10rpm, and the rotating speed of ball milling is 30rpm, and abrasive body carries out when using the steel ball of diameter 50mm
Experiment.As a result, it has been found that containing sandstone 60%~70% in former waste concrete, after sandstone detaches, the separating degree of sand reaches
85%~90%, the separating degree of stone reaches 90%~98%, and the sand and stone isolated are very clean, can directly commercially
Using.Thus illustrate, sandstone separation method of the invention achieves the effect of highly significant.
Embodiment 3：
A kind of sand-gravel separation device of the waste concrete of the present invention, the scheme in above-described embodiment 1 and embodiment 2 can adopt
Implemented with the device, but core is to employ ball milling cylinder 1, other accessories can be adjusted according to actual conditions.Such as Fig. 1
Shown in Fig. 2, Fig. 1 is the structure diagram of the sand-gravel separation device of the waste concrete of the present embodiment, and Fig. 2 is the A-A sections of Fig. 1
Figure, the device of the present embodiment include ball milling cylinder 1 and drive the rotation driving of 1 rotation of ball milling cylinder, 1 both ends end of ball milling cylinder
Face seals, and ball milling cylinder 1 includes the first side wall and second sidewall of two planes, and the first side wall is mutually parallel with second sidewall.
In the present embodiment, the tool of ball milling cylinder 1 is tetragonal body structure or body structure there are four side wall, i.e. ball milling cylinder 1, is removed
Outside the first side wall and second sidewall being mutually parallel, also third side wall and the 4th side wall, third side wall and the 4th side wall are
It planar structure and is mutually parallel, the vertical range between the first side wall and second sidewall is H, between third side wall and the 4th side wall
Vertical range for L, H: L=1: 5, can implement using 1: 1.5~20.
In the present embodiment, rotation driving includes shaft 4, retarder 5 and motor 6, shaft 4 by retarder 5 with it is electronic
Machine 6 is connected, and ball milling cylinder 1 is placed in shaft 4 and is fixedly connected with shaft 4, and the lower section of ball milling cylinder 1 is equipped with pedestal 7, pedestal 7
It is equipped with two stents 3 for being used to support shaft 4.
In the present embodiment, it is equipped with liner plate 8 on the inner wall of ball milling cylinder 1, the third side wall of ball milling cylinder 1 (or the 4th side
Wall) on offer feed inlet and outlet and for control feed inlet and outlet be opened and closed disengaging bin gate 2, charging and discharging also can centre position
It puts, abrasive body is mounted in ball milling cylinder 1, abrasive body uses the steel ball of a diameter of 20mm~150mm.
Embodiment 4：
A kind of sandstone separation method of the waste concrete of the present invention, includes the following steps：
(1) waste concrete block and component (removing the sundries such as brick, wood, plastics, mud) are sub-elected from building waste, and is rushed
It hits or shakes and open mass concrete and component removing reinforcing bar, the bulk waste concrete for eliminating sundries and reinforcing bar is put into hammer crushing
Fritter waste concrete (5~40cm of grain size), the waste concrete pre-processed are broken into machine.
(2) waste concrete of pretreatment is put into ball milling 6h (2~8h) in ball milling cylinder 1, ball milling cylinder 1 it is transversal
Face schematic diagram can be found in Fig. 3, the 1 both ends end face seal of ball milling cylinder, the tool of ball milling cylinder 1 there are four side wall, respectively the first side wall,
Second sidewall, third side wall and the 4th side wall, the first side wall and second sidewall are plane, and the first side wall and second sidewall are mutual
Parallel, third side wall and the 4th side wall are cambered surface, and the recess portion of cambered surface is towards inner barrel, the first side wall and the second side
Vertical range between wall is H, and the average distance between third side wall and the 4th side wall is L, H: L=1: 5, in ball milling cylinder 1
Using the steel ball of a diameter of 70mm as abrasive body.In mechanical milling process, pass through the impact force one after another of the generation of ball milling cylinder 1
Make in waste concrete in addition to hardness and strength relatively high stone and sand, remaining ingredient is crushed, so as to obtain useless coagulation
Native ball-milled mixtures.
(3) the waste concrete ball-milled mixtures after ball milling are sieved into stone, sand and cement powders.
(4) stone screened out and sand are respectively put into the formic acid solution of mass concentration 5% and stirred, remove stone and
The thin layer cementitious material of sand surface attachment.
(5) go out formates with sulfuric acid and phosphoric acid precipitates, reuse formic acid is not outer to be arranged.
In this implementation, containing sandstone 60%~70% in former waste concrete, after sandstone detaches, the separating degree of sand reaches
85%~90%, the separating degree of stone reaches 90%~98%.
A kind of sand-gravel separation device of the waste concrete of the present invention, as shown in Figure 1, the sandstone separation side of above-mentioned waste concrete
Method can be used the device and be implemented, and the device and the sand-gravel separation device of embodiment 3 are essentially identical, differ only in：Ball milling
The third side wall and the 4th side wall of cylinder 1 are cambered surface, reference can be made to Fig. 3.
The sandstone separation method and sand-gravel separation device of the above various embodiments are designed by the special construction of ball milling cylinder 1,
The effect of selective molecular attraction is realized, efficiently separates the sandstone in waste concrete, which can be used for existing ball mill
Middle processing waste concrete, the program is equally within protection scope of the present invention.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention.Though
So the present invention is disclosed as above with preferred embodiment, however is not limited to the present invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from the Spirit Essence of the present invention and technical solution, all using in the methods and techniques of the disclosure above
Appearance makes technical solution of the present invention many possible changes and modifications or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, technical spirit according to the present invention are made to the above embodiment any simple
Modification, equivalent replacement, equivalence changes and modification, still fall within technical solution of the present invention protection in the range of.
Claims (10)
1. a kind of sandstone separation method of waste concrete, which is characterized in that the method includes by pretreated waste concrete
It is put into ball milling cylinder (1) and carries out ball milling, obtain waste concrete ball-milled mixtures, then sieve waste concrete ball-milled mixtures
Into stone, sand and scrap rubber gel material powder, the sandstone separation of waste concrete is realized；
Ball milling cylinder (1) the both ends end face seal, the ball milling cylinder (1) include the first side wall and the second side of two planes
Wall, the first side wall are mutually parallel with second sidewall.
2. the sandstone separation method of waste concrete according to claim 1, which is characterized in that ball milling cylinder (1) tool
There are four side wall, respectively the first side wall, second sidewall, third side wall and the 4th side wall, if the first side wall and second sidewall it
Between vertical range for H, the average distance between third side wall and the 4th side wall is L, then H: L=1: 1.5~20；
And/or the rotating speed of the ball milling is 10rpm~30rpm.
3. the sandstone separation method of waste concrete according to claim 2, which is characterized in that described H: L=1: 4~8；
And/or the rotating speed of the ball milling is 15rpm~25rpm.
4. the sandstone separation method of waste concrete described in any one of claim 1 to 3, which is characterized in that will sieve
Obtained stone is put into cleaning solution to stir or be put into be rotated in general milling machine without abrasive body, removes stone surface
Scrap rubber gel material slurry；The sand that screening obtains is put into cleaning solution and is stirred, the scrap rubber gel material of dissolving sand surface attachment
Slurry；
The cleaning solution includes reacting the acid solution of generation soluble-salt or anti-with scrap rubber gel material slurry with scrap rubber gel material slurry
The complexing agent of soluble complex salt should be generated.
5. the sandstone separation method of waste concrete according to claim 4, which is characterized in that the acid solution includes hydrochloric acid
It is one or more in solution, salpeter solution, formic acid solution and acetic acid solution；
And/or liquid is reused after precipitation after the cleaning obtained after cleaned liquid washing.
6. the sandstone separation method of waste concrete described in any one of claim 1 to 3, which is characterized in that the ball
Using the steel ball of diameter 20mm~150mm as abrasive body in grinding cylinder (1), the time of the ball milling is 2h~8h；
And/or the pretreatment includes procedure below：It first sub-elects waste concrete block and component and removes impurity removing, by useless coagulation
Soil block and component, which are done to dissipate, removes reinforcing bar, and the waste concrete block sub-elected is broken into fritter waste concrete, is obtained pretreated
Waste concrete.
7. a kind of sand-gravel separation device of waste concrete, which is characterized in that including ball milling cylinder (1) and driving ball milling cylinder
(1) the rotation driving of rotation, ball milling cylinder (1) the both ends end face seal, the ball milling cylinder (1) including two planes the
One side wall and second sidewall, the first side wall are mutually parallel with second sidewall.
8. the sand-gravel separation device of waste concrete according to claim 7, which is characterized in that ball milling cylinder (1) tool
There are four side wall, respectively the first side wall, second sidewall, third side wall and the 4th side wall, if the first side wall and second sidewall it
Between vertical range for H, the average distance between third side wall and the 4th side wall is L, then H: L=1: 1.5~20.
9. the sand-gravel separation device of waste concrete according to claim 8, which is characterized in that described H: L=1: 4~8.
10. the sand-gravel separation device of the waste concrete according to any one of claim 7~9, which is characterized in that the rotation
Turn driving and include shaft (4), retarder (5) and motor (6), the shaft (4) passes through retarder (5) and motor (6) phase
Even, the ball milling cylinder (1) is placed in shaft (4) and is fixedly connected with shaft (4), and the lower section of the ball milling cylinder (1) is equipped with
Pedestal (7), the pedestal (7) are equipped with the stent (3) for being used to support shaft (4)；
The inner wall of the ball milling cylinder (1) is equipped with liner plate (8), and the side wall of the ball milling cylinder (1) is equipped with feed inlet and outlet and use
In the disengaging bin gate (2) of control feed inlet and outlet opening and closing, the ball milling cylinder (1) is interior to be mounted with abrasive body.
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Application publication date: 20180706 |