CN108929657A - A kind of miberal powder dust suppressant and preparation method thereof - Google Patents
A kind of miberal powder dust suppressant and preparation method thereof Download PDFInfo
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- CN108929657A CN108929657A CN201810947179.XA CN201810947179A CN108929657A CN 108929657 A CN108929657 A CN 108929657A CN 201810947179 A CN201810947179 A CN 201810947179A CN 108929657 A CN108929657 A CN 108929657A
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- dust suppressant
- ionic monomer
- miberal powder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
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Abstract
The present invention is a kind of miberal powder dust suppressant and preparation method thereof.The dust suppressant is to prepare hydrosol polymer using ionic monomer and non-ionic monomer as raw material by combined polymerization technology, be then blended with silica solution.The partial size of hydrosol polymer is low, has better cementability to miberal powder.Silica solution improves the cohesive force of organic polymer, and the shell for participating in being formed has better weathering quality.
Description
Technical field
The present invention relates to the miberal powder dust suppressant in miberal powder Dust Improvement field, especially a kind of copolymerizing and blending hydrosol polymer
Dust suppressant and preparation method thereof.
Background technique
Various seriously polluted threat atmosphere caused by ore crushing and miberal powder stockyard, water body and human-body safety, miberal powder are raised
Pellet PM10 and fine particle PM2.5 in dirt are easy enriching heavy metal ion, organic oxide, bacterium and disease
Poison is done great harm to human body.Therefore, inhibit the miberal powder fugitive dust in ore crushing and processing, transport and stacking process, improve operation ring
The air quality in border.
Starch, cellulose and its deep processing product belong to natural polymer, and safety is good, but water resistance needs
It improves.EVA, PVA belong to synthetic macromolecular compound, and film forming ability is good, and dust suppression is high-efficient, but to the adaptability in different dirt sources
It is insufficient.CN102703031 discloses a kind of compound dust suppressant, and main component is calcium chloride, sodium metasilicate, polyvinyl alcohol and sweet
Oil is sprayed at mineral bulk cargo surface, can form one layer of cured layer on mineral bulk cargo surface, can be by mineral bulk cargo surface
Grain is bonded together.CN103289647 is related to a kind of Compound chemical dust suppressant, and recipe ingredient is Sodium Polyacrylate, ethoxy
Cellulose, polyethylene glycol, glycerol and water are suitable for dust-proof in the area Gan Tan of mill tailings reservoir area and its road transport.
CN103305187 discloses a kind of water-and acrylate lotion preparation method, has the function of wetting, bonding, coalescence.When use
This dust suppressant aqueous solution is uniformly sprayed to dump surface, dump dust from flying can be inhibited for a long time and effectively.CN104693345
A kind of polymeric dispersions suitable for urban road dust suppression are disclosed, although being prepared by soap-free silicone-acrylic emulsion technology, product
Safety is improved, but still falls within polymer emulsion scope, and dust suppression efficiency is to be improved.
A kind of miberal powder dust suppressant of invention and preparation method thereof.The dust suppressant be using ionic monomer and it is non-from
It is sub- property monomer copolymerizable, the hydrosol that is blended with silica solution, partial size is lower than traditional polymer emulsion.Compared to water-soluble polymeric
Object dust suppressant, the shell that silica solution participates in being formed have better weathering quality.
Summary of the invention
The purpose of the present invention is to provide a kind of miberal powder dust suppressants and preparation method thereof.The dust suppressant with ionic monomer and
Non-ionic monomer is raw material, prepares hydrosol polymer by combined polymerization technology, is then blended with silica solution.Polymerization
The partial size of the object hydrosol is lower than 100nm, has almost had both the feature performance benefit of emulsion polymer and water-soluble polymer, has had to miberal powder
Better cementability.Silica solution improves the cohesive force of organic polymer, and the shell for participating in being formed has better weathering quality.
The technical solution of the present invention is as follows:
A kind of miberal powder dust suppressant, it is characterized in that the dust suppressant is water-soluble by the polymer of combined polymerization technology and blending technology preparation
Glue, raw material include ionic monomer, non-ionic monomer, pH buffer, initiator and water, raw material proportioning are as follows:
Form mass fraction
Ionic monomer 12-28,
Non-ionic monomer 3-7,
Initiator 0.3-2,
Silica solution 1-5,
Water 100；
The raw material further includes neutralizer, and the amount of neutralizer is to adjust the pH value of reaction system to 6.5-7.5.
The ionic monomer is acrylic acid, methacrylic acid, vinyl sulfonic acid, 2- acrylamide -2- methyl-prop sulphur
One or both of acid and its sodium salt.
The non-ionic monomer is butyl acrylate, ethyl acrylate, methyl methacrylate, acrylic acid hydroxyl second
One of ester, hydroxypropyl acrylate and styrene are a variety of.
The silica solution is the modified silicasol after coupling agent treatment.
The initiator is one or both of potassium peroxydisulfate, ammonium persulfate and sodium peroxydisulfate, as an aqueous solution
It is added, the mass percentage concentration of solution is 5 ~ 10%.
The neutralizer is one or both of sodium hydroxide, potassium hydroxide and sodium carbonate, as an aqueous solution plus
Enter, the mass concentration of the neutralization agent solution is 5~10%.
The water is distilled water or tap water.
The preparation method of the miberal powder dust suppressant, comprising the following steps:
(1) ionic monomer, non-ionic monomer are mixed, it is spare as mix monomer；
(2) water is added into reactor and is warming up to 75-85 DEG C after nitrogen displacement, mix monomer and initiator, 3.0-5.0 is added dropwise
Hour be added dropwise, 79-89 DEG C heat preservation 1.0-2.0 hours；
(3) it is cooled to 35-65 DEG C, with the pH value of neutralizer regulation system to 5-6, silica solution is added dropwise；
(4) it is cooled to room temperature, the pH value of regulation system discharges, as miberal powder dust suppressant to 6.5-7.5.
In the step (3), the temperature of system is 50-55 DEG C.
The beneficial effects of the present invention are:
(1) dust suppressant of the invention is without volatility low molecule organic matters such as glycerol, ethylene glycol, residual oil, without secondary pollution, ring
Border good security；Polymeric reaction temperature is appropriate, has not only guaranteed that reaction system is stablized, but also facilitates hydrosol conversion, final to improve
The weathering quality of dust suppressant.
(2) dust suppressant of the invention is blending of the partial size lower than 100nm, dispersion, and specific surface area is conventional emulsion
8-27 times, dust suppressant probability bonding with dust particles and consolidation effect are dramatically increased, dust suppression efficiency is helped to improve.
(3) for dust suppressant of the invention because partial size is small, it is weaker to the scattering power of natural light, and colourless production can be made
Product reduce the adverse effect to vision.
(4) dust suppressant of the invention does not contain the metal ions such as copper, mercury, aluminium, corrosion-free to metal, to environment without destruction.
(5) dust suppressant of the invention combines the film-formation result of organic polymer and the reinforcing effect of inorganic matter, facilitates
Improve weathering quality.
(6) dust suppressant of the invention is suitable for ore crushing and processing, transport and stacking process by sprinkling wagon or sprayer
In miberal powder dust suppression.
Specific embodiment
The present invention is further illustrated below with reference to embodiment:
Embodiment one
In gram, 10g acrylic acid and 6g methacrylic acid are as ionic monomer, 5g butyl acrylate and 2g propylene for mass fraction
Sour hydroxyl ethyl ester is spare as mix monomer after mixing as non-ionic monomer.To equipped with blender, thermometer, dropping liquid
In the reactor of funnel and nitrogen conduit be added 100g distilled water, under stiring nitrogen replace 30 minutes, warming-in-water to 78 DEG C,
Mix monomer above-mentioned is continuously added dropwise, is added dropwise within 3.0 hours.Therebetween, while the ammonium persulfate that 8g mass concentration is 5% is added dropwise
Aqueous solution (time synchronization).System is warming up to 88 DEG C, keeps the temperature 1.5 hours.System is down to 53 DEG C, with mass concentration for 5.0%
Sodium hydroxide the pH value of reaction system is adjusted to 5.5, within an hour be added dropwise 3.0g silica solution.System is cooled to room temperature,
PH value is adjusted to 7.3 with 5.0% sodium hydroxide solution, a kind of miberal powder dust suppressant as of the invention.When practical application, with
Water 1:50 in mass ratio dilution, is then injected into sprinkler, carries out sprinkling dust suppression.
Measure film forming thickness: weighing the Iron Ore Powder that 150 gram particle degree are 100 mesh and adding to diameter is to press in the culture dish of 12cm
It is real.The tap water of 50 times of quality of the waterborne polymeric dust suppressant of embodiment is diluted, with 1.5kg/m2Dosage spray sample,
25 DEG C of freeze-day with constant temperature.Shell is removed, measures film forming layer thickness with slide calliper rule.
Evaluate resistance to weathering: sample preparation and spray method are identical as the measurement method of film forming thickness.Sample is in 25 DEG C of constant temperature
Dry, weighing.To simulate the mass loss rate after 5 grades of wind-force closely continuously purge 1.0h as weathering quality evaluation index.
The index embodies the bonding of dust suppressant, crust effect.Mass loss rate is lower, and anti-dust effect is better.
Embodiment two
Implementation steps are as in the first embodiment, difference are as follows: the dosage of ionic monomeric acrylic is reduced to 9g by 10g；Silica solution
Dosage increase to 4.0g；The dropping temperature of silica solution is 50 DEG C.
Method of evaluating performance is the same as embodiment one.
Embodiment three
In gram, 14g acrylic acid and 2g methacrylic acid are as ionic monomer, 3g styrene and 4g acrylic acid hydroxyl for mass fraction
Propyl ester is spare as mix monomer after mixing as non-ionic monomer.To equipped with blender, thermometer, dropping funel
With addition 100g distilled water in the reactor of nitrogen conduit, nitrogen is replaced 30 minutes under stiring, and warming-in-water is to 82 DEG C, continuously
Mix monomer above-mentioned is added dropwise, is added dropwise in 3.0 hours.Therebetween, at the same be added dropwise 10g mass concentration be 5% potassium peroxydisulfate it is water-soluble
Liquid.System is warming up to 88 DEG C, keeps the temperature 1.5 hours.System is down to 50 DEG C, it will be anti-with the sodium hydroxide that mass concentration is 5.0%
The pH value of system is answered to be adjusted to dropwise addition 4.0g silica solution within 5.2,1.5 hours.System is cooled to room temperature, with 5.0% hydrogen-oxygen
Change sodium solution and pH value is adjusted to 6.8, discharges, a kind of miberal powder dust suppressant as of the invention.When practical application, quality is pressed with water
It is diluted than 1:50, is then injected into sprinkler, carries out sprinkling dust suppression.
Performance evaluation: replace Iron Ore Powder as miberal powder using kaolin, method is the same as embodiment one.
Example IV
Implementation steps are the same as embodiment three, difference are as follows: non-ionic monomer styrene such as replaces at the butyl acrylate of quality.
Method of evaluating performance is the same as embodiment three.
The property and performance of subordinate list miberal powder dust suppressant of the invention
| Embodiment one | Embodiment two | Embodiment three | Example IV | |
| Physical state | Water white is translucent | Water white is translucent | Water white is translucent | Water white is translucent |
| PH value | 7.3 | 7.3 | 6.8 | 6.8 |
| Viscosity (25 DEG C, mPas) | 1100 | 820 | 530 | 550 |
| Film forming thickness (cm) | 1.9 | 2.1 | 2.4 | 2.3 |
| Resistance to weathering (%) | 4.1 | 3.6 | 2.7 | 1.9 |
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that this hair
Bright specific embodiment is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not departing from this
Under the premise of inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by being submitted
Claims determine scope of patent protection.
Unaccomplished matter of the present invention is well-known technique.
Claims (3)
1. a kind of miberal powder dust suppressant, it is characterized in that the dust suppressant is the polymer water prepared by combined polymerization technology and blending technology
Colloidal sol, raw material include ionic monomer, non-ionic monomer, pH buffer, initiator and water, raw material proportioning are as follows:
Form mass fraction
Ionic monomer 12-28,
Non-ionic monomer 3-7,
Initiator 0.3-2,
Silica solution 1-5,
Water 100；
The raw material further includes neutralizer, and the amount of neutralizer is to adjust the pH value of reaction system to 6.5-7.5；
The ionic monomer be acrylic acid, methacrylic acid, vinyl sulfonic acid, 2- acrylamide-2-methyl propane sulfonic and
One or both of its sodium salt；
The non-ionic monomer is butyl acrylate, ethyl acrylate, methyl methacrylate, hydroxy-ethyl acrylate, third
One of olefin(e) acid hydroxypropyl acrylate and styrene are a variety of；
The initiator is one or both of potassium peroxydisulfate, ammonium persulfate and sodium peroxydisulfate, is added as an aqueous solution,
The mass percentage concentration of solution is 5 ~ 10%；
The neutralizer is one or both of sodium hydroxide, potassium hydroxide and sodium carbonate, is added as an aqueous solution, institute
The mass concentration for the neutralization agent solution stated is 5~10%；
The water is distilled water or tap water；
The preparation method of the miberal powder dust suppressant, comprising the following steps:
(1) ionic monomer, non-ionic monomer are mixed, it is spare as mix monomer；
(2) water is added into reactor and is warming up to 75-85 DEG C after nitrogen displacement, mix monomer and initiator, 3.0-5.0 is added dropwise
Hour be added dropwise, 79-89 DEG C heat preservation 1.0-2.0 hours；
(3) it is cooled to 35-65 DEG C, with the pH value of neutralizer regulation system to 5-6, silica solution is added dropwise；
(4) it is cooled to room temperature, the pH value of regulation system discharges, as miberal powder dust suppressant to 6.5-7.5.
2. miberal powder dust suppressant as described in claim 1, it is characterized in that the silica solution is the modification after coupling agent treatment
Silica solution.
3. miberal powder dust suppressant as described in claim 1, it is characterized in that the temperature of system is 50-55 in the step (3)
℃。
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| CN201810947179.XA CN108929657A (en) | 2018-08-20 | 2018-08-20 | A kind of miberal powder dust suppressant and preparation method thereof |
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| CN201810947179.XA CN108929657A (en) | 2018-08-20 | 2018-08-20 | A kind of miberal powder dust suppressant and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157379A (en) * | 2019-06-21 | 2019-08-23 | 陕西科技大学 | A kind of fire-retardant dust suppressant of soft film type coal and preparation method thereof |
| CN114149789A (en) * | 2021-12-24 | 2022-03-08 | 张伟 | Dust suppressant for preventing construction raise dust and preparation method thereof |
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| CN102649835A (en) * | 2012-04-26 | 2012-08-29 | 华南理工大学 | Organic-inorganic hybrid high-silicon-content acrylic ester emulsion and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110157379A (en) * | 2019-06-21 | 2019-08-23 | 陕西科技大学 | A kind of fire-retardant dust suppressant of soft film type coal and preparation method thereof |
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| CN114149789A (en) * | 2021-12-24 | 2022-03-08 | 张伟 | Dust suppressant for preventing construction raise dust and preparation method thereof |
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Application publication date: 20181204 |