CN109053128A - A kind of method that lead zinc tailings prepares eco-concrete - Google Patents
A kind of method that lead zinc tailings prepares eco-concrete Download PDFInfo
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- CN109053128A CN109053128A CN201810904695.4A CN201810904695A CN109053128A CN 109053128 A CN109053128 A CN 109053128A CN 201810904695 A CN201810904695 A CN 201810904695A CN 109053128 A CN109053128 A CN 109053128A
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- lead zinc
- concrete
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- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000004567 concrete Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 64
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 58
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 230000002708 enhancing effect Effects 0.000 claims abstract description 22
- 230000004048 modification Effects 0.000 claims abstract description 19
- 238000012986 modification Methods 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 17
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims description 28
- 239000002994 raw material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N thiocyanic acid Chemical compound SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 239000000378 calcium silicate Substances 0.000 claims description 9
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 9
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 9
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 7
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000000806 elastomer Substances 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 7
- 235000021321 essential mineral Nutrition 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- 239000004816 latex Substances 0.000 claims description 7
- 229920000126 latex Polymers 0.000 claims description 7
- 229920000609 methyl cellulose Polymers 0.000 claims description 7
- 239000001923 methylcellulose Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 7
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 229920002521 macromolecule Polymers 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011701 zinc Substances 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 235000012241 calcium silicate Nutrition 0.000 description 12
- 229910020218 Pb—Zn Inorganic materials 0.000 description 5
- XLJMAIOERFSOGZ-UHFFFAOYSA-N cyanic acid Chemical compound OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical class S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241000255964 Pieridae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000003860 storage 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
- C04B30/00—Compositions for artificial stone, not containing binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
Abstract
The embodiment of the invention discloses a kind of methods that lead zinc tailings prepares eco-concrete, including mixture I and mixture II is first made, mixture I and mixture II are crushed respectively again, moisture is added into mixture I, and side adds waterside to pour into mixture II, stands obtain the eco-concrete after mixing evenly.The method that a kind of lead zinc tailings provided in an embodiment of the present invention prepares eco-concrete, by the way that lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixture I；Polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture II；Then mixture I and mixture II are crushed respectively, and the eco-concrete that moisture is made described is added, can effectively solve the problem that bring resource waste and pollution problem during lead and zinc dressing.
Description
Technical field
The present embodiments relate to the field of building materials, and in particular to a kind of lead zinc tailings prepares the side of eco-concrete
Method.
Background technique
Pb-Zn deposits tailings is Lead-zinc concentrator by grinde ore, chooses the waste discharged after useful component.Because of Pb-Zn deposits
Many years mineral processing production has accumulated a large amount of Pb-Zn tailings slag.A large amount of Pb-Zn tailings slag muck product not only occupies land resource, and
And also will affect ecological environment, the heavy metal in mine tailings can pollute surface soil, surrounding enviroment.Relevant expert is through grinding
Think after studying carefully, Pb-Zn tailings slag is the secondary resource for having misplaced place, and as rationally, recycling can turn waste into wealth, and can also be improved
Mine entironment.
Eco-concrete is exactly that the aggregate of greater particle size is consolidated molding using high strength adhesive in brief, utilizes bone
Hole storage can make the matrix of plant growth between material, make various plants in firmer aggregate coagulation by sowing or other means
Hypothallus growth in soil, and then complete the revegetation of ecological environment.Period needs to use a large amount of minerals, therefore is badly in need of grinding
Study carefully a kind of method for preparing eco-concrete using lead zinc tailings, while can effectively solve the problem that environmental pollution, makes full use of lead
Zinc tailings.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of method that lead zinc tailings prepares eco-concrete, can effectively solve
Certainly bring resource waste and pollution problem during lead and zinc dressing.
To achieve the above object, a kind of technical solution provided in an embodiment of the present invention are as follows: ecological coagulation of lead zinc tailings preparation
The method of soil, comprising the following steps:
Step 1: first lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixed
Close object I；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside
Mixture II is poured into, stands obtain the eco-concrete after mixing evenly.
Among some embodiments, the smashed partial size of the mixture I is 0.2-4mm；And/or the mixture
II smashed partial size is 0.2-0.8mm.
Among some embodiments, the parts by weight of essential mineral in the lead zinc tailings are as follows: 45-50 parts of SiO2,
10-16 parts of CaO, 8-15 parts of Fe2O3, 7-14 parts of Al2O3, 2-4 parts of MgO, surplus is loss on ignition.
Among some embodiments, the powder-mixed agent is mainly by the following raw material system in parts by weight
At: 100 parts of calcium silicate hydrate, 0.01-300 parts of hardening accelerator.
Among some more specific embodiments, the hardening accelerator includes chloride, nitrite, nitric acid
Any one in salt, sulfate and thiocyanic acid or two or more combinations.
Among some embodiments, the preparation method of the powder-mixed agent includes soaking calcium silicate hydrate powder
Bubble is in hardening accelerator saturated aqueous solution, and then drying is crushed again, and the temperature of the drying is 90-120 DEG C, does
The dry time is 10-20h.
Among some embodiments, the preparation method of the powder-mixed agent include hardening accelerator is saturated it is water-soluble
Liquid is sprayed in calcium silicate hydrate powder, and then drying is crushed again, and the temperature of the drying is 40-100 DEG C, is done
The dry time is 10-48h.
Among some embodiments, the enhancing polymeric agent include elastomer latex, resin emulsion, methylcellulose and
Any one in polyvinyl alcohol or two or more combinations.
In addition, the present invention provides a kind of eco-concretes prepared by the above method.
Among some embodiments, the raw material for preparing the eco-concrete includes a following group in parts by weight
Part: 100 parts of lead zinc tailings, 0.01-1.0 parts of powder-mixed agent, 3-5 parts of gravels, 1-5 parts of modification infusorial earths, 1-5 parts of amino sulphurs
Acid, 1-5 parts of polyacrylamides, 0-5 parts of enhancing polymeric agents, 400-550 parts of coarse aggregates, 0-100 parts of fine aggregates, 0.01-0.5 parts
Water-reducing agent and 30-60 parts of water.
Compared with prior art, the embodiment of the present invention has the advantages that the embodiment of the invention provides a kind of lead zinc tails
The method that slag prepares eco-concrete, by by lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid
It is mixed to prepare mixture I；Polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；Then mixture I and mixture II are crushed respectively, and the eco-concrete that moisture is made described, Neng Gouyou is added
Effect solves the problems, such as bring resource waste and pollution during lead and zinc dressing.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..Combined with specific embodiments below
The present invention will be described in detail.
Lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth, sulfamic acid, polyacrylamide in following examples
Amine, enhancing polymeric agent, coarse aggregate, fine aggregate, water-reducing agent and water can be by buying in the market.
The embodiment of the present invention provides a kind of method that lead zinc tailings prepares eco-concrete, comprising the following steps:
Step 1: first lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixed
Close object I；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside
Mixture II is poured into, stands obtain the eco-concrete after mixing evenly.
Further, the smashed partial size of the mixture I is 0.2-4mm；And/or the mixture II is smashed
Partial size is 0.2-0.8mm.
Further, in the lead zinc tailings essential mineral parts by weight are as follows: 45-50 parts of SiO2, 10-16 parts
CaO, 8-15 parts of Fe2O3, 7-14 parts of Al2O3, 2-4 parts of MgO, surplus is loss on ignition.
Further, the powder-mixed agent is mainly made of the following raw material in parts by weight: calcium silicates water
Close 100 parts of object, 0.01-300 parts of hardening accelerator.The hardening accelerator includes chloride, nitrite, nitrate, sulfuric acid
Any one in salt and thiocyanic acid or two or more combinations.The preparation method of the powder-mixed agent includes by calcium silicates
Hydrate powder is immersed in hardening accelerator saturated aqueous solution, and then drying is crushed again, the temperature of the drying
It is 90-120 DEG C, drying time 10-20h；Or the preparation method of the powder-mixed agent includes that hardening accelerator is satisfied
It is sprayed in calcium silicate hydrate powder with aqueous solution, then drying is crushed again, and the temperature of the drying is 40-
100 DEG C, drying time 10-48h.
Further, the enhancing polymeric agent includes in elastomer latex, resin emulsion, methylcellulose and polyvinyl alcohol
Any one or two or more combinations.
In addition, preparing the eco-concrete the present invention provides a kind of eco-concrete prepared by the above method
Raw material includes component once in parts by weight: 100 parts of lead zinc tailings, 0.01-1.0 parts of powder-mixed agent, 3-5 parts of sand
Gravel, 1-5 part modification infusorial earth, 1-5 parts of sulfamic acids, 1-5 parts of polyacrylamides, 0-5 parts of enhancing polymeric agents, 400-550 parts
Coarse aggregate, 0-100 part fine aggregate, 0.01-0.5 parts of water-reducing agents and 30-60 parts of water.
Below in conjunction with several exemplary embodiments, further description of the technical solution of the present invention.
Embodiment 1
A kind of method that lead zinc tailings prepares eco-concrete, comprising the following steps:
Step 1: first lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixed
Close object I；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside
Mixture II is poured into, stands obtain the eco-concrete after mixing evenly.
Further, the smashed partial size of the mixture I is 0.2mm；And/or the smashed partial size of the mixture II
For 0.2mm.
Further, in the lead zinc tailings essential mineral parts by weight are as follows: 45 parts of SiO2, 10 parts of CaO, 8 parts
Fe2O3, 7 parts of Al2O3, 2 parts of MgO, surplus is loss on ignition.
Further, the powder-mixed agent is mainly made of the following raw material in parts by weight: calcium silicates water
Close 100 parts of object, 0.01 part of hardening accelerator.The hardening accelerator include chloride, nitrite, nitrate, sulfate and
Any one in thiocyanic acid or two or more combinations.
Further, the preparation method of the powder-mixed agent includes that calcium silicate hydrate powder is immersed in hardening to promote
Into in agent saturated aqueous solution, then drying is crushed again, and the temperature of the drying is 90 DEG C, drying time 10h.
Further, the enhancing polymeric agent includes in elastomer latex, resin emulsion, methylcellulose and polyvinyl alcohol
Any one or two or more combinations.
In addition, preparing the eco-concrete the present invention provides a kind of eco-concrete prepared by the above method
Raw material includes component once in parts by weight: 100 parts of lead zinc tailings, 0.01 part of powder-mixed agent, 3 parts of gravels, 1 part
Modification infusorial earth, 1 part of sulfamic acid, 1 part of polyacrylamide, 400 parts of coarse aggregates, 0.01 part of water-reducing agent and 30 parts of water.
Embodiment 2
A kind of method that lead zinc tailings prepares eco-concrete, comprising the following steps:
Step 1: first lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixed
Close object I；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside
Mixture II is poured into, stands obtain the eco-concrete after mixing evenly.
Further, the smashed partial size of the mixture I is 0.2mm；And/or the smashed partial size of the mixture II
For 0.2mm.
Further, in the lead zinc tailings essential mineral parts by weight are as follows: 45 parts of SiO2, 10 parts of CaO, 8 parts
Fe2O3, 7 parts of Al2O3, 2 parts of MgO, surplus is loss on ignition.
Further, the powder-mixed agent is mainly made of the following raw material in parts by weight: calcium silicates water
Close 100 parts of object, 0.01 part of hardening accelerator.The hardening accelerator include chloride, nitrite, nitrate, sulfate and
Any one in thiocyanic acid or two or more combinations.
Further, the preparation method of the powder-mixed agent includes that hardening accelerator saturated aqueous solution is sprayed at silicon
In sour hydrate of calcium powder, then drying is crushed again, and the temperature of the drying is 40 DEG C, drying time 10h.
Further, the enhancing polymeric agent includes in elastomer latex, resin emulsion, methylcellulose and polyvinyl alcohol
Any one or two or more combinations.
In addition, preparing the eco-concrete the present invention provides a kind of eco-concrete prepared by the above method
Raw material includes component once in parts by weight: 100 parts of lead zinc tailings, 0.01 part of powder-mixed agent, 3 parts of gravels, 1 part
Modification infusorial earth, 1 part of sulfamic acid, 1 part of polyacrylamide, 400 parts of coarse aggregates, 0.01 part of water-reducing agent and 30 parts of water.
Embodiment 3
A kind of method that lead zinc tailings prepares eco-concrete, comprising the following steps:
Step 1: first lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixed
Close object I；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside
Mixture II is poured into, stands obtain the eco-concrete after mixing evenly.
Further, the smashed partial size of the mixture I is 4mm；And/or the smashed partial size of the mixture II is
0.8mm。
Further, in the lead zinc tailings essential mineral parts by weight are as follows: 50 parts of SiO2, 16 parts of CaO, 15 parts
Fe2O314 parts of Al2O3, 4 parts of MgO, surplus is loss on ignition.
Further, the powder-mixed agent is mainly made of the following raw material in parts by weight: calcium silicates water
Close 100 parts of object, 300 parts of hardening accelerator.The hardening accelerator includes chloride, nitrite, nitrate, sulfate and sulphur
Any one in cyanic acid or two or more combinations.
Further, the preparation method of the powder-mixed agent includes that calcium silicate hydrate powder is immersed in hardening to promote
Into in agent saturated aqueous solution, then drying is crushed again, and the temperature of the drying is 120 DEG C, drying time 20h.
Further, the enhancing polymeric agent includes in elastomer latex, resin emulsion, methylcellulose and polyvinyl alcohol
Any one or two or more combinations.
In addition, preparing the eco-concrete the present invention provides a kind of eco-concrete prepared by the above method
Raw material includes component once in parts by weight: 100 parts of lead zinc tailings, 1.0 parts of powder-mixed agent, 5 parts of gravels, 5 parts
Modification infusorial earth, 5 parts of sulfamic acids, 5 parts of polyacrylamides, 5 parts of enhancing polymeric agents, 550 parts of coarse aggregates, 100 parts of fine aggregates,
0.5 part of water-reducing agent and 60 parts of water.
Embodiment 4
A kind of method that lead zinc tailings prepares eco-concrete, comprising the following steps:
Step 1: first lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are mixed to prepare mixed
Close object I；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture
Ⅱ；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside
Mixture II is poured into, stands obtain the eco-concrete after mixing evenly.
Further, the smashed partial size of the mixture I is 4mm；And/or the smashed partial size of the mixture II is
0.8mm。
Further, in the lead zinc tailings essential mineral parts by weight are as follows: 50 parts of SiO2, 16 parts of CaO, 15 parts
Fe2O314 parts of Al2O3, 4 parts of MgO, surplus is loss on ignition.
Further, the powder-mixed agent is mainly made of the following raw material in parts by weight: calcium silicates water
Close 100 parts of object, 300 parts of hardening accelerator.The hardening accelerator includes chloride, nitrite, nitrate, sulfate and sulphur
Any one in cyanic acid or two or more combinations.
Further, the preparation method of the powder-mixed agent includes that hardening accelerator saturated aqueous solution is sprayed at silicon
In sour hydrate of calcium powder, then drying is crushed again, and the temperature of the drying is 100 DEG C, drying time 48h.
Further, the enhancing polymeric agent includes in elastomer latex, resin emulsion, methylcellulose and polyvinyl alcohol
Any one or two or more combinations.
In addition, preparing the eco-concrete the present invention provides a kind of eco-concrete prepared by the above method
Raw material includes component once in parts by weight: 100 parts of lead zinc tailings, 1.0 parts of powder-mixed agent, 5 parts of gravels, 5 parts
Modification infusorial earth, 5 parts of sulfamic acids, 5 parts of polyacrylamides, 5 parts of enhancing polymeric agents, 550 parts of coarse aggregates, 100 parts of fine aggregates,
0.5 part of water-reducing agent and 60 parts of water.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of method that lead zinc tailings prepares eco-concrete, which comprises the following steps:
Step 1: lead zinc tailings, powder-mixed agent, gravel, modification infusorial earth and sulfamic acid are first mixed to prepare mixture
Ⅰ；
Step 2: polyacrylamide, enhancing polymeric agent, coarse aggregate, fine aggregate and water-reducing agent are mixed to prepare mixture II；
Step 3: mixture I and mixture II are crushed respectively, moisture is added into mixture I, and side adds waterside to pour into
Mixture II stands obtain the eco-concrete after mixing evenly.
2. the method that lead zinc tailings prepares eco-concrete according to claim 1, it is characterised in that: I powder of mixture
Partial size after broken is 0.2-4mm；And/or the smashed partial size of the mixture II is 0.2-0.8mm.
3. the method that lead zinc tailings prepares eco-concrete according to claim 1, which is characterized in that in the lead zinc tailings
The parts by weight of essential mineral are as follows: 45-50 parts of SiO2, 10-16 parts of CaO, 8-15 parts of Fe2O3, 7-14 parts of Al2O3, 2-4
The MgO of part, surplus is loss on ignition.
4. the method that lead zinc tailings prepares eco-concrete according to claim 1, which is characterized in that the powder-mixed
Agent is mainly made of the following raw material in parts by weight: 100 parts of calcium silicate hydrate, 0.01-300 parts of hardening accelerator.
5. the method that lead zinc tailings prepares eco-concrete according to claim 4, it is characterised in that: the hardening accelerator
Including any one or the two or more combinations in chloride, nitrite, nitrate, sulfate and thiocyanic acid.
6. the method that lead zinc tailings prepares eco-concrete according to claim 1, it is characterised in that: the powder-mixed
The preparation method of agent includes that calcium silicate hydrate powder is immersed in hardening accelerator saturated aqueous solution, and then drying carries out again
Crushing, the temperature of the drying are 90-120 DEG C, drying time 10-20h.
7. the method that lead zinc tailings prepares eco-concrete according to claim 1, it is characterised in that: the powder-mixed
The preparation method of agent includes that hardening accelerator saturated aqueous solution is sprayed in calcium silicate hydrate powder, and then drying carries out again
Crushing, the temperature of the drying are 40-100 DEG C, drying time 10-48h.
8. the method that lead zinc tailings prepares eco-concrete according to claim 1, it is characterised in that: the enhancing macromolecule
Agent includes any one or two or more combinations in elastomer latex, resin emulsion, methylcellulose and polyvinyl alcohol.
9. a kind of eco-concrete prepared by any one of claim 1-8 the method.
10. eco-concrete according to claim 9, which is characterized in that the raw material for preparing the eco-concrete includes
Component once in parts by weight: 100 parts of lead zinc tailings, 0.01-1.0 parts of powder-mixed agent, 3-5 parts of gravels, 1-5 parts
Modification infusorial earth, 1-5 part sulfamic acid, 1-5 parts of polyacrylamides, 0-5 parts of enhancing polymeric agents, 400-550 parts of coarse aggregates, 0-
100 parts of fine aggregates, 0.01-0.5 parts of water-reducing agents and 30-60 parts of water.
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Cited By (1)
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| CN110616324A (en) * | 2019-04-11 | 2019-12-27 | 苏州重于山新材料科技有限公司 | Method for extracting silver from silver-containing lead-zinc tailings and utilizing waste residues of silver |
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