CN1358816A - Nove dust-inhibitor and preparation process - Google Patents

Abstract

The present invention relates to a dust inhibitor and its preparation process. In which functional resin with larger charge density molecular chain is used to effectively raise adhesivity of dust granules. After said dust inhibitor is mixed in water and sprayed, it can well interlock dust granules, raise their coagulation so as to can inhibit the dispersion and movement of dust granules. It is a novel water-saving dust-inhibiting product which not only can prevent dust from raising, but also can absorb water, preserve moisture, resist evaporation, and has long durability.

Description

A kind of New Dust-Depressor and blending process thereof

(1) technical field

The present invention relates to a kind of New Dust-Depressor and the blending process thereof in environment protection and labour hygiene field; it is by the functional resin that has than large charge density molecular chain, dust granules physics that formation can change and improve and chemical property, improves the fusible New Dust-Depressor of dust granules effectively.After spraying in the mixing entry, it can get the dust granules interlocking better, and coagulation strengthens, thereby the inhibition dust granules disperses and migrates.Be a kind ofly can suppress airborne dust, can absorb water again, preserve moisture, anti-evaporation, have long persistent novel water-saving dust suppression product.

In the most cities of China, pellet, promptly the aerodynamics equivalent diameter is less than or equal to 10 microns suspended particle has become principal pollutant, and it and city raised dust have direct relation.Strengthen environmental protection, alleviating the dust dirt is the basic assurance of improving the overall quality of the population, and also is the fundamental state policy that China realizes sustainable development.The Chinese government is defined as the great strategy that modernization of the country is built to Sustainable development in " China Agenda 21---China's 21 century population, environment and development white paper "; emphasize to want control population once more, economize on resources, protect environment, environment protection is realized one of important assurance of Sustainable development as China.

Raising along with development and national economy and living standards of the people, country has constantly proposed strict demand to environment protection and labour hygiene standard, and roof fly-ash separator, dust-inhibitor, mobile ventilation slot are respectively that secondary smoke is administered, open airborne dust suppresses, the new technology measure of mobile dust source control; Air quantity adjusting and control, Pneumatic ash conveying technology are used widely in dust-removal system; Aspect dust removal installation, long bag and low pulse bag type dust removing technology and " surface filtration " technology become the bag-type dusting new technology, and equipment enlarging will become developing direction, and will be current, and China's Industrial Dust Control Technology has all obtained rapid progress aspect theory and practice.

Though environmental quality is able to obvious improvement at present, the pollution situation that bad old practices die hard still allows of no optimist, and the solid waste of carrying out in China in 1994～1997 years is declared enrollment results and shown, pollutions such as dust, flue dust are listed in 12 kinds of Chinese main harm and pollute.The data that " China Environmental State Bulletin in 1997 " announced show China then the total emission volumn of industrial dust be 1,505 ten thousand tons.Therefore strengthening the labour protection of production operation, improve environment, reduce dust pollution, reduce the sickness rate of occupational disease, is the emphasis in the labour hygiene work.

Present stage dust suppression The Application of Technology also progressively turns to the big city, mainly solves the problem that stirs up a cloud of dust of open base areas such as construction industry construction operation face, road surface, coal yard, lime-ash stockyard.Reduce airborne dust, improve Air quality, governments at all levels execute the problem that gravity solves in recent years especially.Initial watering and lowering dust, dust preventions such as building site enclosing are set go through transition at present to new and high technology.Reason is apparent, and the one, in order to save resource.Well imagine that if three water of all building sites spray in a day, water loss is huge.The 2nd, urban environmental protection is more and more paid close attention to for various circles of society, and relevant research is arisen at the historic moment.The 3rd, the environmental protection overall situation is pregnant with the long-range development prospect of environmental protection industry under the market economy.Traditional water spray dust-arrest device has dust-laying effect preferably for resting period short dust, stockpile, then its effect is desirable not to the utmost but it is to the stockpile in wind-force, resting period length more than 5 grades, and the dustproof phase is short, and the water spray workload is big, thereby causing the relative cost height, management difficulty is bigger.Easily produce respirable dust after the weathering of industrial powder nature,, can cause stockpile to cave in, influence working efficiency if meet heavy rain.Therefore, the utilization New Dust-Depressor is administered extremely urgent to dust, stockpile.

(2) background technology

Airborne dust is to be dispersion medium with gas, solid-state trickle the dispersion system that material is a disperse phase.Its airborne dust factor mainly is: 1, and the dust source drying, easily oxidation diminishes surface particles and powdered; 2, be in exposed and natural weathered state; 3, extraneous no windproof retention device is subjected to windage.Common dust mainly is made of jointly organic fillers such as Industrial buildings dust, mineral microparticle, dust particle, biological residual karyomicrosome, domestic refuse dust, the dust emission of its generation is relevant with multiple factor, as size distribution, water content, atmospheric moisture, wind speed, materials flow amount, drop etc.Dust diffuses to form dust pollution around the dirt source under the air-flow in environment drives after place, dirt source produces.Because being the fine particle in dirt source, the major cause of airborne dust has the attribute that suspends very easily aloft, thereby, at above-mentioned situation, the key of catching factors vary such as suppressing fine particle chance outside air humidity, wind speed, materials flow amount, drop and suspending, make the dark degree connection mechanism of big area of fine particle with modern high tech method, thereby effectively it is solidified into one firmly, makes outside its face of land of no longer dissociating, the stockpile structure organization, can stop and reduce airborne dust.

The principle one of water spray dust suppression is the water content, particularly top layer particulate water content that increases raw material, preferably makes water content reach 6%～8%, to increase particulate weight; The 2nd, the size distribution of change dirt source upper layer mainly is the distribution of micro dust particle, by water droplet or droplet micro dust particle is captured or agglomeration.Dust moisture absorption meeting causes cohesion, influence the particulate degree of scatter, and test shows, the different rate of moisture absorption of test dust size are also different, less than the rate of moisture absorption of 3.5 μ m dust then with particle diameter diminish and sharply increase.The viscosity of test dust increases with granularity and diminishes.Certainly, the surface tension of capture and agglomerant process and effect and liquid, the spray droplet size, the pattern of nozzle and quantity, factors such as spraying pressure are relevant.

Planar water in the dust is that the form with moisture film is coated on the lip-deep of dust granules, and in fact it has been an integral part of dust granules.Moisture film is coated on dust colloidal surface with great suction, and this power maximum can reach 10000 normal atmosphere (142000psi).But because envrionment temperature can change the content of this water, recover prototype after the drying and volatilizing again rapidly, become the dirt source, so the dustproof phase of water spray dust suppression is short, water spray consumption and workload are bigger, and anti-dust effect is desirable not to the utmost.

At present, domestic and international dust-inhibitor product divides two classes on the market: a class is to be preserved moisture in road surface, stockpile surface, does not play dirt; Another kind of is to make stockpile surface crust, does not play ash.Look site specific during use and determine dust-inhibitor composition and ratio.Dust-inhibitor is blended in the water, can realize the covering protection effect of stockpile top layer, and dust-proofing agent sprays " hair jelly " can for airborne dust source such as the earthwork, coal piling field, ashery of exposed soil, excavation, effectively improves Air quality.Corresponding spray application and equipment are also complete, have multiple pattern to select for the user, generally can reach and suppress airborne dust more than 10 days, but cost is quite high, has limited its popularization in practical ranges.Therefore, the research and development comprehensive cost is lower, the dust-inhibitor of more perfect function, has tangible economy and social benefit.

High hydrophilous resin is a kind of new functional macromolecule material.It has the heavy hundreds of of specific absorption self to the high absorbent function of several thousand times of water, and water retention property is good, in case when water-swelling becomes hydrogel, even pressurization also is difficult to water sepn is come out.Therefore, it all has extensive use in every field such as daily life, industrial and agricultural production, civil construction.

High hydrophilous resin is the macromole that a class contains hydrophilic radical and crosslinking structure, is made through saponification by the starch-grafted polyacrylonitrile of employings such as Fanta the earliest again.Press raw material and divide, starch system (grafts, carboxymethylation etc.), cellulose-based (carboxymethylation, grafts etc.), several big classes of synthesized polymer system (polyacrylic, polyethenol series, polyoxyethylene system etc.) are arranged.Wherein the polyacrylic High hydrophilous resin has series of advantages such as production cost is low, technology is simple, production efficiency is high, water-retaining capacity is strong, shelf life of products is long than starch system and cellulose-based comparing, and becomes the research focus in current this field.During world's High hydrophilous resin was produced at present, polyacrylic accounted for 80%.

When resin mixes with water, rely on the ionic group such as the wetting ability of COO-and COOH group and the osmosis that Na+ produces on the interface of resin and water to absorb water, the reason of Here it is super absorbent resin absorbs big water gaging.Simultaneously, because crosslinked action makes resin formation space reticulated structure, do not dissolve even absorb large quantity of moisture yet, and in for a long time, keep enough intensity.

(3) summary of the invention

In view of above-mentioned analysis, must consider the dust granules physics and the chemical property of dust when adopting absorbent resin to make dust-inhibitor, must satisfy " suction, water conservation, dust suppression " several big functions, also promptly help its water saving, energy-conservation, raising work efficiency.Explore on the experiment basis in early stage, we propose to study the new approaches of using super absorbent resin production New Dust-Depressor.

Resin in dust with dust in little clay interact particularly adsorption.Because microparticle surfaces is electronegativity more, if on the molecular resin chain, introduce a certain amount of organic cation group, adsorption between fortified resin and small bits of clay, so both can make the polyelectrolyte resin have bigger persistence, requirement reduces, aquation, expansion and the dissemination of dust are suppressed, and this has just played the effect of dust suppression.The interaction of research resin and dust is

Secondly, the most direct function of super absorbent resin is a water conservation.Utilize its anti-evaporation that absorbs water, under physical environment the characteristic of humidity absorption and release periodically, the new type functional resin that can design suction, preserve moisture and be used for dust suppression.Resin is in use along with the carrying out of water absorption course, as long as the amount of water is no more than the water-intake rate limit, water just " curing " in the resin network structure, " water conservation " function has suppressed the motion of water in the dust, and the motion of water is the major cause that the dust solid phase movement runs off, and this has just suppressed the loss of industrial raw material such as breeze coal dust from an aspect.On the other hand,, the dispersion and the transfer of dust particle have also been suppressed, even during environmental change is big, also can fundamentally weaken the loss of dust particle owing to have adsorption between resin and dust small bits of clay.Therefore, we think to have close ties between the function such as suction, water conservation, dust suppression of absorbent resin, can be by the Molecular Structure Design of resin, adjust the relation between molecular resin chain and water, the grit effect, multiple function united and coordinating can be got up, accomplish that then super absorbent resin can either be used for dust suppression, also can play water saving effect preferably.

Studies show that water-intake rate is all relevant with the The Nomenclature Composition and Structure of Complexes of molecular resin chain, particularly with the ratio and the distribution and relevant of hydrophilic radical with cross-linking density.As synthetic positively charged ion super absorbent resin maximum water-intake rate is being arranged when acrylamide content is 30%, the consumption of linking agent is the water-intake rate maximum of 0.067% o'clock resin.Linking agent is very few, and the crosslinked polymer density of formation diminishes, and can not form good network structure polymer, and dissolving part increases in water, and water-intake rate and intensity all descend; And dosage of crosslinking agent is too much, and then the almost external crosslinking density that forms becomes big, the network volume reducing of polymkeric substance, though intensity increases, water-intake rate descends.We think that keeping appropriate hydrophilic group content and degree of crosslinking is to coordinate an importance of aforementioned contradiction, and on the other hand, the network structure intensity that strengthens polymkeric substance by the chemical combination bonding strength that changes crosslinked link is the means of effecting a permanent cure.

At present, water-retaining agent is that main body is carried out polymerization with water-soluble ethylene fundamental mode monomer, obtain water-soluble skeleton, contain an amount of hydrophilic group such as positively charged ions such as carboxyl anion (COO-) or quaternary ammonium salt on the main chain of polymer molecule, be cross-linked to form T type reticulated structure by the molecule interchain again; Require polymkeric substance to have the suitable electric density of ratio and ionic group distributes, require to have suitable cross-linking density simultaneously, the constitutional features of Here it is super absorbent resin.But with when guaranteeing water-intake rate, guaranteeing its not hydrolysis and not dissolving in water in the wetting ability of fortified resin again, is the problem that the Molecular Structure Design of super absorbent resin must at first solve with the interaction of water therefore.

Purpose of the present invention is exactly will invent to have long persistence, and water requirement reduces, and can make not only that the dissemination of dust repressedly a kind ofly can absorb water, preserves moisture, anti-evaporation but also can suppress the novel dust suppression product of multiple function such as airborne dust.It should possess following characteristics: 1, and stable performance, each effective constituent of dust-inhibitor is dispersed into stable homogeneous system; 2, viscosity, proportion, pH value and water are worked as; 3, have no side effect non-secondary pollution; 4, have certain effect that prevents coal spontaneous combustion; 5, consumption is few, economical rationality.

The dustproof mechanism of this dust-inhibitor is: make full use of the multifrequency nature of high molecular functional resin, but the moisture in efficient absorption air and the stockpile, its rate of moisture absorption is over thousands of a times of own wt; Make the moisture of absorption be difficult for being evaporated, reach and use surface, stockpile dirt source to keep moistening purpose for a long time; The film-forming properties of the unique system of this dust-inhibitor, in case after the film forming, can make the stockpile surface have that wind resistance power is brushed and airborne dust not, and be insoluble in water, thereby this dust-inhibitor has water saving, moisture absorption, preserves moisture and film forming multi-efficiency such as harden.

The T type reticulated structure that is cross-linked to form between this dust-inhibitor molecular chain has bigger electric density and ionic group and distributes, and has than strong affinity with water molecules and dust particle, can in suction dust particle firmly be adsorbed within his the T type reticulated structure.

The main component of this dust-proofing agent is a super high molecular weight polyacrylamide, have cement, characteristics that perviousness is strong, free from environmental pollution, quick and durable, cheap.After dust-proofing agent was sprayed on the sandy soil surface, it can form the protecting crust that one deck has certain intensity on the sandy soil surface, separates the direct effect of air-flow to sandy soil, receives the dust-proof effect.Spray the film protective layer that forms behind the dust-proofing agent and have extensibility preferably, also do not change the porousness of sandy soil, water-permeable and water-absorbent are all very high, and the growth of plant is not produced obstruction.Through check, prove that this novel material can stand the wind speed of 20 meters of per seconds (being equivalent to 9 grades of strong wind).The relevant person points out that this dust-proofing agent if can be used widely, and will promote the Air quality in city greatly.The spy declares national patent.

The dust-inhibitor raw material is commonly used both at home and abroad, industrial chemicals soluble in water, and processing and preparing and constructional method are simple.After the activated pre-molten processing of raw material, mixed by a certain percentage stir the dust-inhibitor concentrated solution.

Its main raw materials in proportion is:

Super high molecular weight polyacrylamide 5～20kg

Metaboric acid trimethyl 1～3kg

This positive butyl ester sulfuric ester sodium salt 1～3kg of oil

C14～C18 alkyl sodium sulfonate 1～2kg

Repone K 1～2kg

Water 100～1000kg

The New Dust-Depressor technological process of production:

The charging activation---mixes---finished product---quality inspection---packing

The activated back of super high molecular weight polyacrylamide adds metaboric acid trimethyl, Repone K in reactor, originally just butyl ester sulfuric ester sodium salt is molten in advance for oil, adds C14～auxiliary agents such as C18 alkyl sodium sulfonate again and mixes, and promptly gets New Dust-Depressor.Through after the assay was approved, can use.

This dust-inhibitor is easy to use, after only it need being diluted 30～100 times, be sprayed on the various places that are easy to produce flying dust, as the construction site, mining firm, smelting shop, the fuel-burning power plant, burning coal boiler room, coal yard, the Coal Transport special train, flyash processing enterprise, flour, starch, cement, lime, DYE PRODUCTION enterprise and the necessary certainly pharmaceutical factory of dirt environment that keeps, food factory, the dairy plant, Operation theatre, electronic component factory, relevant place such as precision instrument factory, can reduce the pollution of dust greatly to environment, reduce pellet index in the air significantly, effectively improve Air quality.Particularly, has crucial meaning to the flying dust improvement on the ground, sandstorm source of harm humans living environment wantonly.

Because this dust-inhibitor all is diluted to very low concentration and uses, and adds that these chemical itself are fixed in the dust granules, can not permeate and run off, that is to say that they are bound by in the dust, have no side effect, can degrade non-secondary pollution voluntarily after for a long time.

Consider the marketing needs simultaneously, selected raw material commonly used for use, per hundred square metres of dust suppression expenses only are 3.8 yuans, and suitability for industrialized production has less investment, the characteristics that instant effect, economy and social benefit are high, and market outlook are considerable.

Dust-proofing agent is passing through test in the strong wind more than 7 grades, does well at relevant construction test scene.Dustproof effect to dust-proofing agent has given abundant affirmation.

(4) concrete enforcement

Embodiment one:

Utilize its anti-evaporation that absorbs water, under physical environment the characteristic of humidity absorption and release periodically, be applied to the road surface dust suppression.When the road surface is sprayed with when containing dust-inhibitor (2kg/m2), be 8 days the working lipe that airborne dust concentration reaches national grade ii standard;

Embodiment two:

At the very easily dry airborne dust in the fine iron breeze of 0～3mm heap surface, not only easily cause the breeze missing-ton in fine iron breeze stockpile surface, especially granularity, and severe contamination environment, post worker's physical and mental health is caused to a certain degree influence.According to south China one iron ore experimental study, this factory stock ground is lost 3000 tons because of airborne dust every year at least.For this reason, at the beginning of the second half year to calendar year 2001 in 2000, two cover water spray dust-arrest devices have been installed successively, have been adopted water spray respectively and spray dust-inhibitor, after coming into operation, obtained effect preferably.

1, the water spray cost

Blowing season, by every day to each material district two casees of spraying water, the two cover water spray dust-arrest devices in 4 material districts, 8 casees of spraying water altogether then, promptly 72 tons, press 1 yuan of a comprehensive cost/calculating, be 72 yuan; Annual by water spray calculating in 120 days, then annual water cost is: 72 * 120=8640 unit.

2, the dust-inhibitor cost

Blowing season, by at every turn to each material district two casees of spraying water, the two cover water spray dust-arrest devices in 4 material districts, 8 casees of spraying water altogether then, promptly 72 tons, press 1 yuan of a comprehensive cost/calculating, be 72 yuan; According to the solid 40 days dirt phases calculating of dust-inhibitor, annual by spraying water 6 times, then annual water cost is: 72 * 6=432 unit.Cost 800 * 6=4800 unit

5232 yuan of total costs

3, direct benefit calculates

According to statistics, this factory causes missing-ton at least at 3000 tons because of the airborne dust of blowing in a stock ground every year] more than, lose 60% by water spray back minimizing missing-ton and calculate, then can avoid 1800 tons of mineral powder loss, by 300 yuan of a powdered iron ore average prices/calculating, can reduce the missing-ton loss every year at least:

Be ten thousand yuan of 300 * 1800=54

Two cover water spray dust-arrest devices are invested 40,000 yuan altogether, and then the payback period is

(4+0.864) * the 12/54=1.08 month

Recoverable investment in promptly one month.

Calculate by reducing missing-ton loss 90% behind the spray dust-inhibitor, then can avoid 2700 tons of mineral powder loss, can reduce the missing-ton loss every year at least by 300 yuan of powdered iron ore average prices/calculate I:

Be ten thousand yuan of 300 * 2700=81

Two cover water spray dust-arrest devices are invested 40,000 yuan altogether, and then the payback period is

(4+0.5232) * the 12/81=0.67 month

Recoverable investment in promptly one month.

4, conclusion:

1), adopts the water spray dust-arrest device can reduce missing-ton at least every year and lose 540,000 yuan; The water spray dust-arrest device is invested 40,000 yuan, and the payback period is 1.08 months;

2), adopt dust-inhibitor can reduce missing-ton at least every year and lose 810,000 yuan; Payback period is 0.67 month; The more important thing is and improved work efficiency, obtained better dust-laying effect, produced good environmental benefit and social benefit.

Embodiment three:

1, be subjects with the local stockpile of certain factory, divide 3 groups, every group of area 30m with this factory's test stockpile ², wherein one group is sprayed commercially available dust-inhibitor respectively, other one group is sprayed this dust-inhibitor, last the group for spray water as a comparison.

2, utilize under the condition of blower fan simulating nature wind-force Pyatyi (8M/S) test downwind side 1M place atmospheric dust concentration.

3 analyze stockpile tectal Changing Pattern of surface dust-inhibitor and effectively dustproof phase.

4 analyze under the when different prescription situation of different dilutions the relevant data of the dust-inhibitor indicator of costs.

Spray test

At the characteristic of stock ground solid powder, utilize spray appliance, dust-inhibitor is sprayed at the stockpile surface.Spray appliance is made up of water tank, water pump, pipeline and shower nozzle.The prototype version spray appliance is adopted in this test.1.5-2L/m ²The sprinkling amount spray.Require to spray evenly,, can divide several times by particular case and spray, reach and spray till the consumption according to the absorbing state on stockpile surface.Make the fully infiltration of stockpile surface, do not occur runoff as far as possible.

The test effect test

Test duration

After spraying dust-inhibitor the 5th day, the tenth day, Ahau, the 40 day are tested three or five groups of stockpiles respectively.

Testing method

1, utilize blower fan simulating nature wind-force (being equivalent to Pyatyi wind speed 8m/s), with air sampler sampling, the atmospheric dust concentration under the filter membrane weighing measurement different states.

2 dust-inhibitor tectum morphological specificitys adopt observation.And the destructiveness of measurement film forming thickness and detection cured layer.

Testing location

Select the following wind direction 1m place of blower fan drifting dust, be positioned at the central position of every group of stockpile,

The weather condition of duration of test

Spray the back and descended a heavy rain the 3rd day that night, the time length is more than 24 hours, and rainfall amount is 26mm, and in thereafter 37 days, weather is sunny substantially, and idol has light rain therebetween, and temperature maintains between the 30-35C.

Dust measuring result and analysis

Test result

Under the Pyatyi wind effect, stockpile dust suppression efficient really reaches more than 90%, and zone, stock ground dust concentration is lower than 10mg/m3, and anti-dust effect is good, and the heavy rain behind the sprinkling dust-inhibitor is not influential to spraying this dust-inhibitor, and commercially available dust-inhibitor runs off to some extent.And the stockpile of watering, after heavy rain took place, powerful scouring force caused the stockpile partial collapse.Show that by observations and test result this type dust-inhibitor forms firmer tectum on the stockpile surface, and water repelling property is excellent.The dustproof phase of dust-inhibitor can reach more than 30 days, and performance of keeping humidity is better than watering.This dust-inhibitor dust suppression phase is the longest.

The stockpile tectum forms feature description

Spray the stockpile surface of commercially available dust-inhibitor, change software strategy into software-hardware strategy, form blocky cured layer, the about 2mm of thickness, film-formation result is better, after raining, and the cured layer deliquescing, the sky is after fine 2 days continuously, cured layer is hardening again, and commercially available dust-inhibitor concentration is high more, and film-formation result is good more, and the dust suppression time is longer.And the lower stockpile surface of concentration because of the wind-force and the weathering in the external world, causes thin cured layer to break, thus the dustproof effect of influence.

This dust-inhibitor surface particles in conjunction with tight, agglomerating, be difficult for airborne dust.Form thicker cured layer, thickness remains at 4-5mm, and film forming speed is fast, and water insoluble.After 40 days, the cured layer of many measuring points still remains intact.This dust-inhibitor prescription anti-dust effect is better than other prescription, and cost is lower.

And the stockpile surface of watering, the sun shines again after the rain after 2 days, and the surface particles efflorescence is strong further, and color is turned white, under extraneous wind effect, the dust concentration severe overweight.

The watering stockpile need repeatedly spray stockpile, and consumption is more if reach 1-2 days dustproof phase.

Commercially available dust-inhibitor is because resistance of rainwater washing against not, the dustproof phase is significantly shorter than this dust-inhibitor, and price is higher than the latter, in conjunction with benefit cost analysis, recommend this low dust-inhibitor of working concentration, low price, and the dustproof phase is greater than 40 days, even during raining, because the energy that has a water resisting property, thereby do not influence dustproof effect.

Conclusion

1, various dust-inhibitors, the processing spray processing is simple, easy to operate.

2, the stockpile watering and lowering dust is difficult to reach effective dust-proof target, and freezed in winter can not spray water, and summer, velocity of evaporation was fast, and dust-laying effect is poor.And use this dust-inhibitor, and can avoid above shortcoming, thereby be applicable to the stockpile depositing dust more, can popularize this technology in the whole nation in an all-round way,

3, adopt dust-inhibitor, stockpile windage loss amount can reduce more than 90%, the zone dust concentration will obviously reduce, and compare with the watering that reaches dust suppression phase level, and comprehensive cost is lower, thereby reduce gradually by the social dispute problem that pollution causes, have tangible economic environment and social benefit.

4, this dust-inhibitor anti-dust effect is better than the commercially available dust-inhibitor of control group, and cost is lower.

Claims (2)

1, a kind of New Dust-Depressor is characterized in that it is the New Dust-Depressor of being made by the following weight proportion raw material:

Super high molecular weight polyacrylamide 5～20kg

Metaboric acid trimethyl 1～3kg

This positive butyl ester sulfuric ester sodium salt 1～3kg of oil

C14～C18 alkyl sodium sulfonate 1～2kg

Repone K 1～2kg

Water 100～1000kg

2, New Dust-Depressor preparation method according to claim 1, it is characterized in that: the activated back of super high molecular weight polyacrylamide is added metaboric acid trimethyl, Repone K, this positive butyl ester sulfuric ester sodium salt of oil in reactor molten in advance, add C14～auxiliary agents such as C18 alkyl sodium sulfonate again and mix, promptly get New Dust-Depressor.