The method of obtaining anti-drug
The invention relates to a technology for de-icing preparations on the basis of the chlorides of sodium, potassium, magnesium. The method includes a heat treatment of a mixture of metal chlorides, which use carnallite ore with a particle size less than 6 mm, and the heat treatment is carried out in the apparatus of the fluidized bed at a temperature in the layer 110-140oC, followed by grinding and classification of the finished product. The technical result is a simplification of the method and expanding the use of de-icing product. 1 C.p. f-crystals, 1 table. The invention relates to a technology for de-icing preparations on the basis of the chlorides of sodium, potassium, magnesium.A well-known drug for the removal of snow and ice cover (see SU 1560546 A1, class 6 09 K 3/18, 30.04.90. Bull. 16). The product contains potassium chloride and 10.5-14.7 per cent, magnesium chloride to 7.0 and 9.8%, magnesium oxide and/or magnesium metal 1.0 to 4.0%, water the rest.The mixture of chlorides is obtained by mixing the dry salts or by dissolution using in the form of solutions.Reduced corrosion activity is achieved by addition of magnesium oxide or magnesium, in the presence of chloride is converted into magnesium hydroxide, resulting in obrazets the high freezing point of the solution and the difficulty of obtaining a homogeneous material by simple mixing.Known composition to prevent ice on the roads (see the patent of Russia 2141500, CL 6 09 K 3/18 from 1998.07.22, publ. 1999.11.20) containing inorganic salt is magnesium chloride and/or carnallite.The disadvantage of this method is the difficulty of obtaining a homogeneous material simply mixing that leads to its segregation during transportation, storage and use.A method of obtaining anti-drug - prototype (see the patent of Russia 2172331, CL 7 09 K 3/18 from 31.03.2000, publ. 20.08.2001). The proposed method get the drug on the basis of metal chlorides with its subsequent grinding, the chlorides of metals used waste magnesium production, which before chopping pre proplast at a temperature of 680-800oTo achieve a homogeneous composition and cool.The disadvantage of this method is its complexity and the limited use of the drug because of the relatively high freezing temperature of the liquid phase formed during the melting of the ice, since the content of potassium chloride in a known drug exceeds 68%; in tailing electrode mixture composition: KCl 40-50%; NaCl, 8% To 20%; MgCl 6-12%, contains up to 15% of the ballast oxides metagem disadvantage of this method is its complexity due to the need of heat treatment salts (penetration) at high temperatures (680-800oC), which requires increased energy consumption. In the case of molten electrolyte - waste magnesium production therein as impurities contains fluoride, a single metal oxides and other compounds of calcium, which causes the need to control runoff water on this indicator in order to avoid environmental pollution.In the known method also provides for the grinding and classification propelling material class 1-5 mm. However, to our knowledge, this grinding is formed up to 50% of the product fraction is 1 mm, the disposal of which creates additional difficulties.The task of the invention is to simplify the method and expanding the use of de-icing product.The positive effect is achieved by the fact that in contrast to the known method, including heat treatment of a mixture of chlorides of metals, grinding and classification, the proposed method as a mixture of chlorides of metals used carnallite ore with a particle size less than 6 mm, and the heat treatment is carried out in the apparatus of the fluidized bed at a temperature in the layer 110-140oC. Classification are emitting fractions 1-10 mm, with fractions less than 1 mm serves on termoobrezan what about the method as a mixture of chlorides of metals used carnallite ore, which presents a mixture of sodium chloride (NaCl) and carnallite (lMgCl26N2On) with a mixture of potassium chloride and insoluble (H. O. - CaSO4Caso3, clay). For example, Karnal-lithium ore Verkhnekamskoe Deposit has the following chemical composition, wt.share, %: KCl 17,7; NaCl 30,0; MgCl222,18; CaSO4+CaCl21,84; N. About. 3,11; H2O 25,17. Carnallite ore is an environmentally friendly product, as it doesn't contain toxic impurities. The content of sodium chloride, calculated on the mixture of NaCl+KCl is:The table shows the dependence of the freezing temperature of water solutions of salts from their composition.The data show that for icing, in a wide range of ambient temperature should be used, either almost pure salt (potassium chloride, sodium chloride), which is not economically feasible, or a mixture of potassium chloride with sodium chloride, where the concentration of sodium chloride exceeds 40%. It should be noted that the content of NaCl in de-icing the product obtained according to the method, does not exceedin the slurry productand the proposed method varies vogelaere the preparation of magnesium chloride increases its scope due to the possibility of use at low temperatures (down to minus 30oC). The proposed method content MgCl2in the product exceedsin terms of dry substance.In contrast to the known method, the heat treatment of the mixture of the chlorides of the metals are in the fluidized bed apparatus at a temperature in the layer 110-140oC. When this occurs, the melting of natural carnallite with the formation of two-water mixture and chetyrehletnego the crystalline composition: KClMgCl2nH2O, where n=2 and 4. Due to processes of melting and dehydration of crystalline apparatus in the fluidized bed effective averaging of the deicing product, sintering the fine fraction and the formation of crystalline non-caking granular material. When the temperature in the layer over 140oWith the dehydration process more intensively, but this is accompanied by hydrolysis of magnesium chloride with the formation of magnesium oxychloride and hydrochloric acid in the gas-vapor phase. The content of Mao in heat-treated drug exceeds the 0.3-0.4%.When the temperature in the layer below 110oSince there is a danger of melting the gas distribution grid in a fluidized bed apparatus and the formation of the "goats". For the same pricillas flue gases and prone to clumping.After heat treatment of metal chlorides subjected to classification by class 1-10 mm in accordance with the requirements of the consumers. The coarse fraction is crushed and mixed with small initial ore and sent for heat treatment. When mixing hot small fractions of chlorides with ore observed agglomeration of particles due to the melting of crystalline ore and hydration of dehydrated carnallite. Classification can lead to rumble or fluidized bed apparatus with a feed mixture of cyclone dust.The data show that the simplified method is achieved through the use of carnallite ore, lowering the temperature of heat treatment (110-140oInstead of 680-800oC) and the use of high-performance devices fluidized bed instead of melting furnaces, and expansion of use by increasing the content in environmentally friendly de-icing the preparation of the chlorides of sodium and magnesium, and improved physical and mechanical properties of the drug due to agglomeration its fine fractions.The method is as follows.Carnallite ore, for example, the Verkhnekamskoe Deposit consisting of a mixture of sodium chloride and carnallite, mixed with potassium chloride is 6 mm is subjected to heat treatment at a temperature of 110-140oWith the apparatus of the fluidized bed. Thermally treated product is classified according to the class 1-10 mm or depending on the requirements of consumers in any other class. The fine fraction (less than 1 mm) in the hot mix from the original ore and the mixture is subjected to heat treatment, and a large fraction (if they occur) are ground and return to the classification. Small classes can be allocated either mechanically or in a fluidized bed apparatus at the heat treatment in the form of a cyclone dust.Examples of the method of the Example 1.1000 wt. including carnallite ore Verkhnekamskoe Deposit composition, wt. share, %: KCl 17,7; NaCl 30,0; MgCl222,18; CaSO4+CaCl21,84; insoluble 3,11; N2About 25,17, was subjected to grinding and classification of class 6 mm coarse fraction returned to the division, and fractions less than 6 mm was subjected to heat treatment at a temperature of 120-130oWith, and then classification by class 1-10 mm on the screen.Fraction less than 1 mm and cyclone dust in an amount up to 10% of the heat-treated material was subjected to mixing with the original carnallite ore, and the fraction of +10 mm - 1% - grind and returned on the classification.After stabilization returned flows received the product in the quantity 870 wt. hours of composition (wt:center; margin-top:2mm;">Claims1. The method of obtaining anti-icing agent on the basis of chlorides of metals, including heat treatment of a mixture of chlorides of metals, grinding and classification, characterized in that the mixture of chlorides of metals used carnallite ore with a particle size less than 6 mm, and the heat treatment is carried out in the apparatus of the fluidized bed at a temperature in the layer 110-140oC.2. The method according to p. 1, characterized in that classification are emitting fractions 1-10 mm, with a fraction less than 1 mm is fed to the heat treatment in the form of a mixture of carnallite ore.
FIELD: road servicing industry.
SUBSTANCE: the invention is dealt with the road servicing industry, in particular with the methods of extirpation of ice covering on motorways, bridges, flyovers, and also aerodromes. The method of the roadway covering slipperiness prevention provides for application of a roadway ice covering suppressing reactant based on acetate, in the capacity of which use a solution with pH=7-9.5, containing components in the following ratio (in mass %): magnesium acetate 13-17, potassium acetate 8-16, potassium hydrocarbonate 5-8, potassium carbonate 2-6, water-insoluble impurities 0-6, water - the rest. The roadway ice covering suppressing reactant may additionally contain a fired limestone in amount of 3-5 mass % in terms of calcium oxide. The method of production a roadway ice cover suppressing reactant for a roadway covering slipperiness prevention provides for mixing of a component containing a magnesium compound, iced acetic acid and water, in the capacity of the component containing the magnesium compound is used brucite, the stirring is exercised in two stages: first they continuously agitate brucite with water and a part of iced acetic acid in a stoichiometric ratio at the temperature of 50-70°C within 50-80 minutes, then, not terminating mixing at the same temperature in the produced mix with pH=5-6 add the rest of ice acetic acid and then add potash in amount exceeding by 0.1 - 6 % the stoichiometric ratio and continue agitation till production of the roadway ice cover suppressing reactant - a solution with pH = 7-9.5 with the above indicated composition. The used roadway ice cover suppressing reactant has composition mentioned above. The technical result consists in - maintenance of the low temperature at the reactant usage, ensuring the passing ice covered roadways motor vehicles metal corrosion protection and at use as the airfield runways coatings - the corrosion protection of metals used in aircraft designs as well. The roadway coating treated with the reactant has a high coefficient of adhesion, that reduces the accident rate on the roadways.
EFFECT: the invention ensures, that the roadway coating treated with the reactant decreases the accident rate on the roadways.
6 cl, 2 tbl, 4 ex
FIELD: chemical industry.
SUBSTANCE: invention relates to preparations used for prevention and removal of snow-ice formations in roads. An anti-glaze of ice preparation comprises the following components, wt.-%: calcium chloride, 15-50; sodium chloride, 48.5-83.5; potassium ferricyanide, 0.2-0.5, and sodium dihydrogen phosphate, 0.3-1.0. Anti-glaze of ice preparation in granulated form is resistant against caking, inhibits corrosion of metals and reduces inhibitory effect of chloride on plants.
EFFECT: improved and valuable properties of preparation.
FIELD: special reagents.
SUBSTANCE: invention relates to substances for applying on surface to prevent or diminish adhering ice, mist or water on it, for prevention of icing, in particular, to anti-glaze of ice reagents. The composite comprises the following components, wt.-%: calcium chloride, 25-32; urea, 2-7; sodium nitrite, 0.03-1.0, and water, the balance. Invention provides preparing the composite harmless for environment that doesn't show harmful effect on environment, doesn't corrode road coatings, and inhibits corrosion of metals. Agent shows economy and high effectiveness.
EFFECT: improved and valuable properties of reagent.
2 cl, 1 tbl
FIELD: road-transport industry.
SUBSTANCE: method includes applying substance on asphalt-concrete mixture. As substance silicon-organic modifier is used, loss of which at 1 m2 of area of pre-placed on road asphalt-concrete mixture at temperature 80-100°C is no less than 0,3-0,5 kg. After applying modifier, asphalt-concrete mixture is rolled.
EFFECT: higher efficiency, no corrosive effect on metals, effective at temperature above -20°C.
2 cl, 3 tbl, 3 ex, 1 dwg
FIELD: domestic chemistry.
SUBSTANCE: invention relates to agents using against misting and icing windshields in transports, sight glasses in agent of individual protection and can be used in living conditions for prevention showcase glasses icing. The composition comprises the following components, wt.-%: polyoxyethylene glycol ester of synthetic primary higher alcohols of (C12-C14)-fraction as a surface-active substance, 6-25; urea or thiourea, or mixture of urea and thiourea, 1-20; glycerol, 5-25; ethylene glycol, 5-41; dye, 0.0005-0.02, and a solvent, the balance. Propyl alcohol as propanol-1 or propanol-2 can be used as a solvent. The composition elicits an anti-misting and anti-icing properties, provides two-sided protection of sight glasses of transport agents and agents of individual protection in cooling the protecting glass surface up to -40°C, elicits the prolonged protective effect, it doesn't solidify at the environment temperature below -40°C and doesn't require the special technical devices for its applying.
EFFECT: valuable properties of composition.
3 cl, 1 tbl, 10 ex
FIELD: Composition of an anti-icing water solution for roads surface treatment.
SUBSTANCE: the invention is pertaining to production of composition of an anti-icing water solution for roads surface treatment against a winter slipperiness (snow rolling-ups, a glaze ice, black ice) n the roads and streets in cities and settlements. The composition contains, in mass %: 20-27 calcium chloride, 5-30 ethyl alcohol, 0.3-5 corrosion inhibitors (borax or sodium nitrite or their mixture), the rest - water. The technical result is - an increase of effectiveness of the composition application, an increase of friction coefficient due to a decrease of the ice density, a raise of the composition ice melting capacity.
EFFECT: the invention ensures an increase of effectiveness of the composition application, an increased friction coefficient and a decreased ice density, a raise of the composition ice melting capacity.
1 cl, 1 ex, 2 tbl
FIELD: materials for miscellaneous applications.
SUBSTANCE: grain mixture comprise, in mass %, 15-45% of compressed first salt of alkaline or alkaline-earth metal and 85-55% of the second salt of alkaline or alkaline-earth metal. The first salt is a waterless hygroscopic salt.
EFFECT: reduced cost.
14 cl, 4 dwg
FIELD: preventive means against freezing and sticking of loose materials to walls of mining and transport equipment; prevention of dusting on interim roads, open-cut mining; protection of rolling stock against freezing and blowing-off of loose materials, coal and peat for example.
SUBSTANCE: preventive means is made in form of mixture of solvent and thickening additive of oil nature. Used as solvent are distillation residues of coke and by-product process and/or by-products of production of butadiene, isoprene, isobutylene, ethylene both independently and in mixture with distillation residues of production process of polymers, pyrolysis residues, benzene, styrene and distillation residues of production of butanol, isobutanol, 2-ethyl hexanol acid and 2-ethyl hexanol. Solvent may additionally contain gas oils of thermal and catalytic cracking and gas oils of coking process. Used as thickening additives are mineral and synthetic oils of all kinds, mixture of used oils, oil sludge, oil residues and oil fuel. Components of thickening additive and solvent are used at any combination. Novelty of invention is use of wastes of various processes of oil and petroleum chemistry products.
EFFECT: extended field of application; cut costs; enhanced ecological safety.
5 cl, 1 dwg, 2 tbl, 17 ex
FIELD: suppression or reduction of icing on surfaces by means of antiicing compounds.
SUBSTANCE: proposed anti-icing compounds contain succinic acid and/or succinic anhydride and neutralizing base, sodium hydroxide, potassium hydroxide or ammonium hydroxide in particular. When mixed with water anti-icing compounds form succinates in the course of reaction which causes fast liberation of heat sufficient for melting ice on surface. According to other versions, anti-icing compounds contain glycol which inhibits repeated icing on cleaned surface. Specification gives description of sets of compounds for melting snow and ice.
EFFECT: enhanced efficiency of melting snow and ice on aircraft and territories of their operation.
29 cl, 11 dwg, 7 tbl, 2 ex
FIELD: motor-car industry; other industries; methods of production of the anti-icing reactant.
SUBSTANCE: the invention is pertaining to the method of production of the anti-icing reactants for maintenance of roads in winter. The method of production of the anti-icing reactant based on sodium chloride and calcium chloride provides for mixing of the sodium chloride with calcium chloride and their heating and drying. Sodium chloride crystals are coated with the atomized solution of calcium chloride and dried in the "boiling bed" kiln with production of the double-layer granules, the outer layer of which is composed out of calcium chloride. Sodium chloride crystals are coated with calcium chloride in two phases. The forming small particles of calcium chloride are fed into the cyclone, whence the cyclone dust of the calcium chloride is fed into the mixer for intermixing with the wet crystals of sodium chloride. The produced anti-acing reactant has the improved physicochemical thermodynamic properties.
EFFECT: the invention ensures, that the produced anti-acing reactant has the improved physicochemical thermodynamic properties.
3 cl, 1 ex, 2 tbl