The method of obtaining anti-drug

 

(57) Abstract:

The invention relates to methods of producing materials for application to the surface to prevent or reduce the buildup of ice, fog or water, for deposition of materials on the surface to prevent freezing or thawing. Method for obtaining anti-icing agent on the basis of a mixture of metal chlorides with subsequent grinding and pre-mixture of the chlorides before chopping proplast at a temperature of 680-800C. until a homogeneous composition and cool, and as a mixture of chlorides of metals used waste magnesium production, for example the spent electrolyte of the electrolysis process harmegnies raw materials and/or chemoelectric mixture of the electrolysis process. The content in the composition of the spent electrolyte and chemoelectric support mixture at a ratio of 1: (0.4 to 0.6). Shredding of waste magnesium production carried out by crushing the mixture, followed by screening and classification emitting fractions 1-5 mm as anti-drug. The technical result - obtaining high-quality preparation for vysokoeffektivnoi drug with low consumption and high melting capacity. The use of waste magnesium production as de-icing tools will significantly reduce export them to the dump, will reduce the disposal of saline waste and improve the ecological condition of the environment. 6 C.p. f-crystals.

The invention relates to methods of producing materials for application to the surface to prevent or reduce the buildup of ice, fog or water, for deposition of materials on the surface to prevent freezing or thawing.

A method of obtaining a composition icing (U.S. patent 5211869, publ. 18.05.93, volume 1150, N 3), including the production of a mixture of halides of alkali and alkaline earth metals, grinding the mixture to a fine powder, agglomerating the mixture into the tray with the use of a salt solution of magnesium chloride as agglomerated liquid, removing moisture from hot air to dried education homogeneous agglomerates.

The disadvantages of this method of obtaining a composition icing include high consumption of the composition per unit area of road surface, a relatively low fusing ability of the composition, the use of dlny covers (ed. mon. USSR N 1560540, C 09 K 3/18, BI N 16, 1990), containing the chlorides of sodium, potassium, magnesium, magnesium metal and magnesium oxide to reduce the corrosivity of the drug and the ability to accumulation of chlorine ions in the soil and destruction of road surfaces.

The disadvantages of this drug are low fusing ability of the drug, high consumption of the drug and the low efficiency of the process of removing ice.

A known method of removing snow and ice cover road surfaces and anti-drug "KAMA" (patent of Russian Federation N 2044118, published. B 26, 20.09.95, PCT application WO/96/08604), taken as the closest prototype. The method of preparation of the anti-drug is the preparation of a mixture of the chlorides of potassium and sodium, using, for example, potassium chloride and conventional technical common salt, followed by continuous pressing of the original mixture of the chlorides of potassium and sodium in the humidity of the charge 1-5%, the specific pressure on the standard roller equipment in the range of 100-200 MPa, while receiving the pressed tile with density 1500-2100 kg/m3and tensile fracture of 1.9 to 4.2 MPa. Granules of the desired size get smaller by splitting the received tiles to fracc the manufacturing of the drug. The disadvantage is the formation of winter road puddles, representing concentrated solutions of metal salts which, when the temperature drops below minus 30oC crystallize, resulting in the re-formation of ice.

The objective of the invention is to obtain high-quality drug, which provides highly effective against ice slick on the roads based on the use of readily available, inexpensive, non-deficient anti-drug low consumption of the drug and a high melting capacity. The use of waste magnesium production as de-icing tools will significantly reduce export them to the dump, will reduce the disposal of saline waste and improve the ecological condition of the environment.

These objectives are achieved using a method of obtaining anti-icing agent on the basis of a mixture of metal chlorides with subsequent grinding, it is new that a pre-mixture of the chlorides before chopping proplast until a homogeneous composition, and as a mixture of chlorides of metals used waste magnesium production.

In addition, image quality is on raw.

In addition, as the waste magnesium production use tailing electrolyte mixture of the electrolysis process harmegnies raw materials.

In addition, as the waste magnesium production using the composition of the spent electrolyte and tailing electrolyte mixture.

In addition, the content in the composition of the spent electrolyte and tailing support electrolyte mixture at a ratio of 1:(0.4 to 0.6).

In addition, the shredding of waste magnesium production carried out by crushing the mixture, followed by screening and classification emitting fractions 1-5 mm as anti-drug.

In addition, a mixture of metal chlorides proplast at a temperature of 680-800oC.

The implementation of the pre-melting of the mixture of metal chlorides before cooking deicing drug produces a homogeneous chemical composition of the drug, which greatly improves its melting properties.

The use of waste magnesium production (spent electrolyte and/or tailing electrolyte mixture, and their compositions in a ratio of 1:(0.4 to 0.6) as de-icing of the drug can significantly SN is maintained by the applicant, the analysis of the prior art, including searching by the patent and scientific and technical information sources, and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant had not discovered similar, characterized by signs, identical with all the essential features of the claimed invention. The definition of the above stated unique prototype, as the most similar in essential features analogue, has allowed to establish the essential in relation to perceived technical result of the distinctive features in the proposed method, set forth in the claims. The novelty of the claimed method is a new sequence of actions and use as anti-icing of new drug substances - waste magnesium production. Therefore, the claimed invention meets the condition of "novelty."

To verify compliance of the claimed invention the term "inventive step", the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the characteristics of the claimed method. The search results showed that the claimed image is specified by the applicant, no impact envisaged the essential features of the claimed invention transformations to achieve a technical result. Therefore, the invention meets the requirement of "inventive step".

Waste magnesium production obtained as follows.

In the bath electrolysis in molten to a temperature of 680oC the electrolyte from the ladle is filled with molten raw material (anhydrous carnallite composition, wt.%: MgCl248-51; NaCl 9-12, KCl 38-40) 6-7 so receive After downloading the composition of the electrolyte, wt.%: magnesium chloride 6-16, sodium chloride 30-40, the rest of potassium chloride. In a bath of the cell submerged anodes and cathodes, which are operated constant electric current. In the process of electrolytic decomposition of the raw material at the cathode is collected magnesium at the anode chlorine. The working electrolyte is circulated in the electrolytic team and cells which are separated by partitions with peritonei Windows. Magnesium is washed by circulating the electrolyte in the electrolytic cell and brought to the team the cell, where it is periodically removed. Chlorine gas is also continuously removed through the flues. At the same time the electrolyte level is the second loading of raw materials into the cell. When using carnallite raw material in the cell can accumulate quickly ballast salt in the spent electrolyte composition, wt.%: KCl 68, NaCl 12 - 24, MgCl24-9, CaCl20,7-1,4, humidity not more than 4 (THE 1714-453-05785388-99); and tailing electrolyte mixture composition, wt.%: MgCl26-12, KCl 40-50, NaCl 8-20, MgO up to 4, R2O315, which are periodically removed from the team of the cells of the cell using the vacuum bucket and loaded into boxes, where it is cooled and then removed from the boxes and crushed. The spent electrolyte is a waste product and is a mixture of metal chlorides, which is considered to be Mature when the content of magnesium chloride is reduced to 4 to 9%. In the electrolyzer, the electrolyte is circulated in the molten state at a temperature of 680-800oC. Given that the melting point of the electrolyte is equal to 650-660oC, the circulation of the electrolyte for a long time at higher temperatures, i.e., is melting at a temperature of 680-800oC, and by its composition, it becomes homogeneous. When powered electrolyzers the carnallite per 1 ton of magnesium receive 4-4,5 tons of spent electrolyte. According to the material balances for days in electroly is periodically removed from the bottom using a vacuum ladle. When removing sludge bucket captures part of the electrolyte, in fact, removed from the electrolytic cell tailing electrolyte mixture (190-290 kg per tonne of magnesium) contained more than 99% of the electrolyte. The frequency of pumping once in two days. This mode provides the best performance electrolysis (current output 80,7% for electrolyzer electrolyzer).

Example 1

Cooled exhaust electrolyte with a crane dumped from boxes, unloaded on the inertial vaporised IR-120 for pre-crushing. Pieces of the electrolyte particle size of not more than 300 mm with tray feeder serves on the inclined belt conveyor and rotary crusher SMD-85. Further crushed electrolyte tape silo serves on mobile screens, a fraction more than 5 mm in return rotary crusher and past the sieve - Elevator and conveyors send in bunker silos or silo interesnoj machine. From silos product is fed into the receiving hopper for loading into rail cars in bulk. From the hopper interesnoj machine crushed electrolyte gravity falls into the rotating drum of the machine, where through the cork of the nozzle by means of compressed air Nagata 4.5 to 4.8 g/m2; -10oC - 9-9,5 g/m2; at -15oC - 14-15 g/m2.

Example 2

Tailing electrolyte mixture discharged from the vacuum ladle in boxes, cool, then dumped out of the boxes, unloaded on the inertial vaporised IR-120 for pre-crushing. Pieces tailing electrolyte mixture particle size of not more than 300 mm with tray feeder serves on the inclined belt conveyor and rotary crusher SMD-85. Further crushed tailing electrolyte mix tape silo serves on mobile screens, a fraction more than 5 mm in return rotary crusher and past the sieve - Elevator and conveyors send in bunker silos or silo interesnoj machine. From silos product is fed into the receiving hopper for loading into rail cars in bulk. From the hopper interesnoj machine SHES gravity falls into the rotating drum of the machine, where through the cork fitting using compressed air is blown into the bags. The consumption of de-icing of the drug per 1 mm thickness of ice is: at a temperature of -5oC - 5,5-6 g/m2; -10oC 10,6 - 11 g/m2; at -15oC - 16-18 g/m2.

Example 3

In the box drained 1 bucket otrabotanny dumped from boxes, unloaded on the inertial vaporised IR-120 for pre-crushing. Pieces of composition particle size of not more than 300 mm with tray feeder serves on the inclined belt conveyor and rotary crusher SMD-85. Next, the crushed composition belt Elevator serves on mobile screens, a fraction more than 5 mm in return rotary crusher and past the sieve - Elevator and conveyors send in bunker silos or silo interesnoj machine. From silos product is fed into the receiving hopper for loading into rail cars in bulk. From the hopper interesnoj machine composition of gravity falls into the rotating drum of the machine, where through the cork fitting using compressed air is blown into the bags. The consumption of de-icing of the drug per 1 mm thickness of ice is: at a temperature of -5oC - 5 g/m2; -10oC - 10 g/m2; at -15oC - 15 g/m2.

1. The method of obtaining anti-icing agent on the basis of a mixture of metal chlorides with subsequent grinding, characterized in that the mixture of chlorides of metals used waste magnesium production, which before chopping pre problably waste magnesium production using the spent electrolyte of the electrolysis process harmegnies raw materials.

3. The method according to p. 1, characterized in that as a waste magnesium production using chemoelectric mixture of the electrolysis process harmegnies raw materials.

4. The method according to p. 1, characterized in that as a waste magnesium production using the composition of the spent electrolyte and chemoelectric mixture.

5. The method according to p. 4, characterized in that the content in the composition of the spent electrolyte and chemoelectric support mixture at a ratio of 1 : (0.4 to 0.6).

6. The method according to p. 1, characterized in that the grinding waste magnesium production carried out by crushing the mixture, followed by screening and classification of emitting a fraction of 1 - 5 mm as anti-drug.

7. The method according to p. 1, characterized in that the waste magnesium production proplast at a temperature of 680 - 800oC.

 

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