CN105315966A - Liquid-state dust inhibitor - Google Patents

Abstract

A liquid-state dust inhibitor is characterized in that the validity of the liquid-state dust inhibitor depends on effective moistening, coagulation and water retention of pavement dust. After pavement dust particles are moistened, small particles form relatively large particles under effect of a high-molecular substance, water is effectively adsorbed by the particle surface under the effect of an osmotic agent, an uneasily-volatile water-retention membrane is formed on the particle surface under the effect of a surfactant and absorbs water molecules in air under the effect of a hygroscopic agent, and thus a moist hardened surface layer is formed on the pavement, and the purpose of inhibiting dust flying is realized. Because of the moistening hardening effects, the pavement quality is greatly improved, and thus the service life of a camion is improved.

Description

Liquid dust-inhibitor

Technical field

The present invention relates to a kind of organic high molecular compound, particularly a kind of for the liquid dust-inhibitor in Production of Strip Mine.

Technical background

Main conveyance in Production of Strip Mine is large-scale mine cargo truck, and these cargo trucies travel on easy sandstone dirt road road.Whenever vehicle crosses, in dry season, billowing flue dust of kicking up, just as a rule Huanglong, seriously pollutes environment of mining area, causes serious harm to the healthy of miner.Data is had to show: dust on the roads accounts for the 70%-90% of the total dust emission of stope.Simultaneously also because pavement quality is poor, dust concentration is large, have impact on the work-ing life of motor car engine and tire, adds the maintenance cost of production unit.

In order to solve the airborne dust problem of trap for automobile, the main method adopted at present is watering dust suppression, but the deadly defect that the method exists is the weather in drying, and water velocity of evaporation is fast, and after general 10-20 minute, yellow dirt rises again, can not fundamentally address this problem.Use in winter can cause icy road again simultaneously, has a strong impact on vehicle driving safety.This addresses this problem the present invention and devises a kind of new and effective Open-Pit Truck Transportation road dust inhibitor, effectively to administer the airborne dust of road.

Summary of the invention

The object of this invention is to provide a kind of liquid dust-inhibitor.Liquid dust-inhibitor is made effectively to be adsorbed in particle surface under the effect of permeate agent, under the effect of tensio-active agent, particle surface forms not volatile water-retaining film, the water molecules in air is absorbed under the effect of moisture adsorbent, thus make road surface form top layer that is moistening, that harden, reach the object suppressing dust from flying.

The technical solution adopted for the present invention to solve the technical problems is: the validity of liquid dust-inhibitor depends on effectively moistening, condensation and the water conservation of road dust.Road dust particle is by after moistening, little particle condenses into larger particle under the effect of polymer substance, and make water effectively be adsorbed in particle surface under the effect of permeate agent, not volatile water-retaining film is formed at particle surface under Action of Surfactant, the water molecules in air is absorbed under the effect of moisture adsorbent, thus make road surface form top layer that is moistening, that harden, reach the object suppressing dust from flying.Due to effect that is moistening, that harden, also improve pavement quality greatly, thus improve the work-ing life of cargo truck.

For reaching moisture absorption, condensation and water conservation object, the efficiency factor of dust-inhibitor is the organic binder bond of high molecular, inorganic hygroscopic material, permeate agent and tensio-active agent.

Technical recipe and component

Magnesium chloride Mg Cl ₂10-30%, polyacrylamide (C3H5NO) n5-10%, sodium sulfonate R-SO3Na1-5%, water 65-75%.

Weight is by 100%.

Liquid dust-inhibitor production technique: respectively four kinds of raw materials are rendered in agitated pool by component proportion, after uniform stirring, solution is stored in hold-up vessel, by water pump, this solution is joined in mining waterwheel, with waterwheel periodically sprinkle on appointment highway pavement, reach dust suppression target.

Dust suppression mechanism:

First sodium sulfonate acts on other three components, increases other component surface active tension, makes its rapid solution; Polyacrylamide precipitates the impurity in solution; Magnesium chloride directly acts on highway pavement, makes road surface moisturizing and hardens.

Magnesium chloride: to harden, moisturizing and rapid ice and snow; Polyacrylamide: flocculation, precipitated impurities; Sodium sulfonate: dilution, increases other component surface active tension.

Sodium vinyl sulfonate is also known as ethylsulfonic acid sodium, and molecular formula is R-SO3Na, and this material is a kind of organic raw material.

Magnesium chloride is a kind of muriate, chemical formula MgCl ₂.Colourless and deliquescent crystal.These salt are typical ionic halide, highly soluble in water.This solidifying agent can be made.

Polyacrylamide, molecular formula is (C3H5NO) n, polyacrylamide (PAM) is a kind of organic high molecular polymer of present situation, also be a kind of polymer water treatment flocculant product simultaneously, can suspended particle in planar water, play link bridging action between particles, make fine particle form larger floc sedimentation, and accelerate the speed of precipitation.This process is referred to as flocculation

The validity of dust-inhibitor depends on effectively moistening, condensation and the water conservation of road dust.Road dust particle is by after moistening, little particle condenses into larger particle under the effect of polymer substance, and make water effectively be adsorbed in particle surface under the effect of permeate agent, not volatile water-retaining film is formed at particle surface under the effect of tensio-active agent, the water molecules in air is absorbed under the effect of moisture adsorbent, thus make road surface form top layer that is moistening, that harden, reach the object suppressing dust from flying.Due to effect that is moistening, that harden, also improve pavement quality greatly, thus improve the work-ing life of cargo truck.

For reaching moisture absorption, condensation and water conservation object, the efficiency factor of dust-inhibitor is the organic binder bond of high molecular, inorganic hygroscopic material, permeate agent and tensio-active agent.These efficiency factor scientific combination are defined the basic recipe of Open-Pit Truck Transportation road dust inhibitor.

The invention has the beneficial effects as follows:

Reduce and produce dirt intensity: more than 90%;

Road dust concentration is less than 2 milligrams/cubic metre;

Effective dust-proof phase: more than 7 days;

Fountain height: 0.6L/m ².

Reach use by Road dust suppressant, the trap for automobile airborne dust accounting for stope airborne dust total amount 70%-90% can be eliminated, make it lower than National Environmental standard.Due to the elimination of dust and the improvement on road surface, can increase the work-ing life of motor car engine and shock mitigation system, can reduce tire consumption, only tire consumes one, and theoretical calculation can lower consumption about 10%.Frequency of utilization and the waterwheel number of units of waterwheel also can significantly reduce.Due to the improvement of environment, the occupational illness sickness rate of miner also will significantly reduce, and demonstrate above-mentioned result of use in the Commercial application of the units such as Anshan iron and steel plant Qidashan iron ore.

The onsite application of dust-inhibitor is simple and convenient, and only need simple agitation to load onto existing water barrow and spray, through simple training, assigned personnel get final product skilled operation.Because liquid dust-inhibitor is macromolecule organic, any corrosion can not be produced to water barrow.Hygroscopic material in addition in liquid dust-inhibitor has snow melt antifreeze function, therefore winter still can use, and also can do Snow Agent and use.

Cost effectiveness analysis

Water yield cheek is spilt according to current stope, watering amount should be 20 times that spray dust-inhibitor, the oil consumption on comprehensive water barrow, maintenance cost, driver and overhead charges also should be 20 times of dust-inhibitor, although the cost of dust-inhibitor itself is more high than water, about 300 yuan/ton, but comprehensive cost and watering remain basically stable.The analysis of dynamic economy shows: the consumption costs of the maintenance of way expenditures that the improvement due to road obviously reduces, the maintenance cost of cargo truck, tire, and the economic benefit that sprinkling dust-inhibitor brings is considerable, and benefit that environmental improvement brings cannot calculate especially simultaneously.

Commerical test

In November, 2010 to 2010, in year December, carried out the commerical test of month by a definite date in Dagushan Iron Ore Mine, Experiment Road segment length 4km, road width average 12m.Wherein spray dust-inhibitor and spray the long each 2km in salt solution section.Duration of test is 30 days, period sprinkling-dust-inhibitor totally 3 times, salt solution sprays 2 times every day, sprays 60 times altogether.

Together with Anshan iron and steel plant institute of industrial health of professional institution, dirt pits is respectively produced to surface mine (Dagushan Iron Ore Mine) and carry out periodic monitoring, by Data Comparison and analysis, determine that the major cause of mine product dirt is Automobile Transportation road surface reentrainment of dust.

Duration of test Anshan iron and steel plant institute of industrial health occupational examining report: dust test result, the equipment adopted, constant flow dust sampling device, specifications and models DS mono-31C, on No. 1, Dagushan Iron Ore Mine and road surface, No. 2 refuse dumps, detected result concentration: spray salt solution 8.00-8.87mg/m ³liquid dust-inhibitor 0.63-0.47mg/m ³

Embodiment

Embodiment

Technical recipe and component

Magnesium chloride Mg Cl ₂10-30%, polyacrylamide (C3H5NO) n5-10%, sodium sulfonate R-SO3Na1-5%, water 65-75%.Weight is by 100%.

Liquid dust-inhibitor production technique: respectively four kinds of raw materials are rendered in agitated pool by component proportion, after uniform stirring, solution is stored in hold-up vessel, by water pump, this solution is joined in mining waterwheel, with waterwheel periodically sprinkle on appointment highway pavement, reach dust suppression target.

Claims (1)

1. a liquid dust-inhibitor, it is made up of water and salt, it is characterized in that: composition weight proportioning is, magnesium chloride Mg Cl ₂10-30%, polyacrylamide (C3H5NO) n5-10%, sodium sulfonate C2H3NaO3S1-5%, water 65-75%.