HU181091B - Dust binding composition - Google Patents

Abstract

The invention relates to a dust-binding agent by which the dust on industrial roads with heavy traffic (cement factories, open-cast coal mines, quarries, ceramic industry) can be bound for a period of several weeks. The emulsion according to the invention consists of 10-32 % by volume of an emulsifiable mineral oil, 0.05-1.00 % by volume of carboxymethylcellulose, 0.1-0.8 % by volume of an ionic or non-ionic wetting agent, 8-49 % by volume of plasticiser, 39-55 % by volume of water and, if desired, up to 3 % by volume of water glass. The emulsion is sprayed onto the road area to be treated and has seeped away after 2-3 hours. The treated area is revived once per day by sprinkling with water, thus lengthening the duration of action. The treatment lowers the dust content of the air to less than 1 % of its original value, and, even after 12 weeks, it is only about 10 % of the original value.

Description

International classification:

NGO ₃ :

C 09 K 3/22

I Free! Repository ·.

VL ^ TULAJDOÚ

patentee:

Mecsek Coal Mines, Pécs, Hungary

BACKGROUND OF THE INVENTION The present invention relates to a new high-performance dust-binding emulsion which, when sprayed on unpaved, high-traffic industrial roads, is capable of binding the powder for two to three weeks.

In addition to cement factories and coarse ceramic plants, the transport routes of open-cast mining plants, ie open-cast coal mines and quarries, produce large amounts of dust in dry weather, which, in the case of weak airflow, causes significant contamination of the environment.

In high dust, visual conditions deteriorate, making traffic accidents easier.

Depending on its mineral composition, airborne dust can also cause workplace harm. For example, open-field lye mines have a relatively high content of free silica in the powder, so in the case of prolonged exposure to dust, workers are expected to suffer from pulmonary lung disease.

Loaders and motels in dusty environments have a 20-25% shorter lifetime. 20

The oldest and most sophisticated dust removal solution is water irrigation, which has the great disadvantage that it evaporates very quickly. Particularly during the summer, the dust-binding effect lasts for a relatively short time (10-15 minutes). 25

Warm tar and cold bitumen emulsion dust removal processes are also known. They have the disadvantage, for example, that they stick to the wheels of the cars, thereby clogging them up while at the same time the cars take the dust removal material off the site. 30

Based on similar considerations, tarry contamination can enter residential homes and flats.

In the United States, in the United States, in 1974, Consumers Oil experimented with Coherox, a reagent referred to by Ross (Coal Age, 06 June 1977, p. 98-101). ) that it is an aqueous emulsion of certain petroleum resins.

In 1975, Timohov et al. (Gornüj Zsurnal, 11, 1975, pp. 68-70) developed an emulsion containing sulfate alcohol residues and bitumen, which was marketed under the name USSR in the Soviet Union15, for dust removal of copper ore quarries.

The present invention relates to a dust binder which is more effective than the previous ones, which can bind fine mineral dusts on the roads for several weeks in dry, warm weather and in other unfavorable meteorological conditions.

It has now been found that when emulsifiable from mineral oil, carboxymethylcellulose (CMC) and an ionic or nonionic saponified aqueous emulsion, a plasticizer / preferably dibutyl phthalate is added, or a plasticizer, preferably di-di oil of carboxymethylcellulose (CMC), previously suspended in oil, and of an ionic or non-ionic wetting agent, aqueous emui181091

-1181091, a very good powder binder is obtained.

Accordingly, the powder binder of the present invention is 10-15% by volume of emulsifiable mineral oil, 0.1 to 10% by volume of carboxymethylcellulose, 0.1-0.8% by weight of ionic or non-ionic wetting agent, and 8-49% by volume. % plasticizer and 40-55% water and 10-32% emulsifiable mineral oil, 0.05-1.00% carboxymethylcellulose (CMC), 0.1-0.8 ionic or nonionic wetting agent, and 8 to 49% by volume of plasticizer, 1 to 3% by volume of water glass and 39 to 55% by volume of water.

The mineral oil used in the powder binder of the present invention is preferably drilling oil, preferably di (2-ethylhexyl) sulfosuccinate Na salt (Nonit manufactured by Sellye Agrochemical Cooperative, Solovet, manufactured by United Chemicals) or alkylphenol polyethylene glycol (w / w). (d) diisoctylphthalate or dibutylphthalate as a plasticizer in addition to Na water.

The components of the emulsion of the invention may be of ordinary commercial quality.

Dibutyl or diisoctylphthalate, optionally containing water glass, provides a longer duration of action of the dust binder, since these compounds evaporate very slowly, thus keeping the treated surface "wet" for a longer period of time.

The potency is increased by applying the emulsion to the road surface by multiple spraying. The finely atomized emulsion is well wetted by the road

2-4 cm thick top layer. As a result of the treatment, the fine dust aggregates into larger particles which would be compressed by the car wheels. Thus, even under mechanical influence, dust particles cannot become a fly powder. One to two hours after spraying, the emulsion will seep in, so there's no risk of slipping. Daily watering is used to refresh the emulsion-treated route. With this, we can also ensure that the dust settles continuously.

Studies have shown that the sprayed emulsion forms a stable colloidal layer on the surface of the cemented rock particles, which absorbs water and irrigates the environment during irrigation. Due to this feature it can regenerate for several weeks.

The main advantages of the dust binding emulsion according to the invention are as follows:

, a) It has good wetting properties, so it quickly moisturizes rock powders of various compositions.

b) Keeps highway traffic permanently wet, so that dust pollution can be minimized.

c) Non-flammable, so it can be used in any industrial site.

d) It does not attack the car's tires and does not corrode the metal parts.

e) It is not physiologically harmful and therefore safe from the point of view of safety.

The invention is further illustrated by the following embodiment.

Example 1

A powder binding emulsion is prepared from the following components:

Component Quantity Volume%

Oil drilling 600 liters 31.537 Solovet - di (2-ethylhexyl) - sulfosuccinate Na salt) 10 liters .526 CMC-adhesive 5 kg 0.131 Düzooktilftalát 250 liters 13.141 Water (pH = 7) 1040 liters 54.665

The emulsion is prepared simply by adding the components and mixing mechanically. The application can be done by fine spraying, preferably with a small tractor-mounted MINITOX-3 type sprayer. At least 1.2 liters of emulsion per m ² must be applied to the paved road by four sprays. The maximum concentration of dust before spraying on the test track is 409 mg / m ³ . 7 days after dust removal our instruments record 7.2 mg / m ³ , and after 20 days only 25.7 mg / m ³ dust concentrations are recorded.

These data clearly demonstrate the benefits of the emulsion of the invention.

Example 2

In the same manner as in Example 1, a powder binder emulsion is prepared from the listed components in the following order.

component Quantity Vol.% dibutyl phthalate (Eviplast 41) 200 liters 17.007 Na-water glass (33 B ° -38 B °) 20 liters 1,701 Oil drilling 350 liters 29.762 CMC-adhesive 2 kg 0,085 Nonit [di- (2-ethylhexyl) - sulfosuccinate Na salt] 5 liters 0,425 Water 600 liters 51.020

272 mg / m ³ before spraying, 1.3 mg / m ³ 1 week after spraying, 1.5 mg / m ³ 3 weeks after spraying, 13.2 mg / m ³ after 8 weeks and after 12 weeks 35 mg / m ³ dust concentrations were measured.

Example 3

In the same manner as in Example 1, a powder binder emulsion was prepared from the following components

-2181091

component Quantity Vol.% dibutyl phthalate (Eviplast 41) 480 liters 47.952 Na-water glass (33 B ° to 38 B °) 12 liters 1,199 Oil drilling 150 liters 14.985 CMC-adhesive 2 kg 0.099 Pravozell (alkylphenol) -polietilén glycol ether) 8 liters 0.799 Water 350 liters 34.965

Before the experiment, 293 mg / m ³ along the road, 0.15 mg / m ³ 1 week after dust removal, 1.4 mg / m ³ 3 weeks, and after 12 weeks only 12.1 mg / m ^{3 *} dust concentrations were recorded.

Example 4

In the same manner as in Example 1, a powder binder emulsion was prepared from the following components:

component Quantity Vol.% dibutyl phthalate 570 liters 28.50 Na-water glass (33 B ° to 38 B °) 6 liters 3.00 Oil drilling 252 liters 12.60 CMC-adhesive 2 kg 0.10 Nonit [di (2-ethylhexyl) - -born fosuccinate-Na-salt) 16 liters 0.80 Water 1100 liters 55.00

The results obtained using the emulsion are the same as those of Example 3.

Claims (7)

Claims: 1. Mineral oil, carboxymethylcellulose, ionic or non-ionic wetting agent, plasticizer and water containing powder binder, characterized in that from 10 to 15% by weight emulsifiable mineral oil, from 0.1 to 1.0% by weight of carboxymethylcellulose, from 0.1 to 0.1% by weight 0.8% by weight of ionic or non-ionic wetting agent, 8 to 49% by weight of plasticizer and 40 to 55% by weight of water. priority: 1980 IV. 08th 2. Emulsifiable mineral oil, carboxymethylcellulose (CMC) ionic or non-ionic wetting agent, plasticizer, water glass and water containing ₁₀ times, characterized in that from 10 to 32% by weight emulsifiable mineral oil, 0.05 to 1.00% by weight. carboxymethylcellulose (CMC), 0.1-0.8% by weight ionic or non-ionic wetting agent, 8 to 49% by volume of plasticizer, 1 to 3% by volume of water glass and 39 to 55% by volume of water. Priority: ₁₅ 1982. IV. 09th 3. An embodiment of the powder binder according to claim 1, characterized in that the mineral oil is a drilling oil. Priority: 1980. IV. 08th A powder binder according to claim 1, wherein the ionic or non-ionic wetting agent is dialkyl sulfosuccinate-Na salt or alkylphenol polyethylene glycol ether. Priority 1980. IV. 08th 5. The form 2j of the powder binder according to claim 1, wherein the plasticizer is diisoctyl phthalate or dibutyl phthalate. Priority: 1980. IV. 08th An embodiment of a powder binder according to claim 2, characterized in that the mineral oil is a drilling oil. Priority: 1982. IV. 09th salt,, ⁷ ; ^The powder binder according to claim 2, wherein the ionic or non-ionic wetting agent is dialkyl sulfosuccinate-Na salt or alkylphenol polyethylene glycol ether. Priority 1982 IV. 09th ₃₅ porlekötő eighth embodiment of the agent according to claim 2, characterized in that the plasticizer is dibutyl phthalate or diizooktilftalát. Priority: 1980. IV. 09th 9. The powder binder according to claim 2, wherein the water glass is sodium water ₄₀ bottles. Priority: 1982. IV. 09th Responsible for publishing: Director of Economic and Legal Publishing 84.4274 - Zrínyi Printing House, Budapest