The method of obtaining potassium chloride |
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IPC classes for russian patent The method of obtaining potassium chloride (RU 2154025):
 A method of obtaining a non-dusting of mineral fertilizers / 2144013
The invention relates to the field of production of non-dusting of mineral fertilizers and can be used at the enterprises producing potash and other fertilizers
 The method of producing potassium sulfate and complex fertilizers / 2144000
The invention relates to techniques for the production of mineral fertilizers, in particular to a technology for production of potassium sulfate from potassium chloride and ammonium sulfate in an aqueous environment by recycling excess solutions to complex NPK fertilizer
 A method of reducing piomote mineral fertilizers / 2135436
The invention relates to technologies for non-dusting of mineral fertilizers and can be used at the enterprises producing potash and other fertilizers
 Method of waterproofing potash fertilizers / 2116993
The invention relates to a method of obtaining potassium chloride, used as fertilizer, flotation of potash ore, including the handling of potassium chloride in the flotation process of the surface-active substance, which is used as a petroleum fraction with a boiling point 310-420oC, dehydration, drying and subsequent processing reagents: potassium ferrocyanide, urea and polyethylene glycol
 A method of obtaining a granulated potash / 2111193
The invention relates to a method of production of mineral fertilizers and can be used by enterprises with waste potassium chloride and calcium carbonate
 The dust-free method of obtaining potassium chloride / 2110504
The invention relates to a technology for dust-free potassium chloride and can be used in the production of potash fertilizers and the development of technologies that reduce production costs and improve the consumer properties of the finished product
 The method of dust suppression grained flotation of potassium chloride / 2095387
The invention relates to the technology of production of potash fertilizers with improved physical and mechanical properties due to special conditioning agents
 Method for granulated potassium chloride / 2083536
The invention relates to a process for producing granulated fertilizers, including processing of particulate fractions of the binder and then pressed together with large classes
 Method of conditioning granulated potassium chloride / 2079476
The invention relates to the production of granulated potassium chloride including his conditioning to improve its physical-mechanical properties
 The method of obtaining complex npk fertilizers / 2071457
The invention relates to a method for chloride and/or sulfate containing NPK fertilizer (complete fertilizer with a lower tendency to swelling and caking
 The method of obtaining potassium chloride / 2147011
The invention relates to the processing of potash ores, in particular the production of mineral fertilizers
The method of obtaining potassium chloride / 2143999
The invention relates to techniques for the production of potassium chloride from sylvinite ores by the method of dissolution-crystallization
 The method of obtaining potassium chloride from sylvinite ores / 2136594
The invention relates to the enrichment of sylvinite ores upon receipt of potassium chloride
 The way quasi determine the degree of saturation silvina hot solutions and device for its implementation / 2114804
The invention relates to a method continuous determining the degree of saturation Silvina hot solutions and device for its implementation
 The method of obtaining potassium chloride / 2114784
The invention relates to the production of potassium chloride from substandard fine by-product of potash factories and involves the dissolution of fine substandard potassium chloride - cyclone dust gallerycheck or flotation plants, crystalline product obtained by classification of the main product or concentrate, etc
 Installation for physical and mechanical tests of materials / 2083826
The invention relates to test equipment, in particular for testing of rock samples
Method of processing sincerita / 2078038
The invention relates to a technology of inorganic substances, in particular to the processing of sincerita, and can be used in the technology of production of potassium chloride
 The method of processing a mixture containing potassium chloride, and device for its implementation / 2075441
The invention relates to a method and apparatus for processing a mixture containing potassium chloride, with particles of various sizes, particularly with particles up to 1.5 mm, in which dry or wet potassium chloride is stirred with a solution of potassium chloride and continuous circulation is served in a solvent apparatus
Potassium chloride and sodium chloride production process / 2307790
Invention is intended for use in chemical and mining industries to manufacture mineral fertilizers and food salts. Ground sylvinite ore is dissolved in recycled potassium chloride-saturated lye. Resulting solution is directed at a rate of 0.03-0.15 m/s to leaching in the first dissolution column, with its electrodes connected to one of a current source poles, and treated by low-frequency (1-5 Hz) alternating electric field at voltage 30-100 v. Solution thus enriched with potassium chloride is fed together with solid phase into the downstream second dissolution column with its electrodes connected to opposite pole of the current source. Treatment by alternating electric field in the second column is effected under the same conditions as in the first column. Two-step leaching results in potassium chloride solution and sodium chloride-enriched solid phase. Separated sodium chloride is sent to production of food salt. Potassium chloride is separated from solution via crystallization.
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(57) Abstract: The invention relates to techniques for processing fine potassium chloride, resulting in the production of potash fertilizers from sylvinite ores. The method involves the dissolution of micronized potassium chloride in water to obtain a suspension and subsequent drying of the suspension with W:T=0.7 to 1.5 in the fluidized bed apparatus at 110-135°C, while the drying of the suspension lead, together with the filtered potassium chloride, and the share suspension in the material entering the drying is 10-90%, while the suspension is prepared in water or a solution of potassium chloride, obtained, for example, in the wet gas cleaning system of the same apparatus. The method involves the use of a cyclone dust generated in the fluidized bed apparatus with a joint dehydration potassium chloride and filtered suspension. The technical result consists in simplifying the process of obtaining potassium chloride with improved physical-mechanical properties, and reduced the content of fine classes. 2 C.p. f-crystals, 1 table. The invention relates to techniques for processing fine potassium chloride, resulting in the production of potash fertilizers from silverm hot micro dispersed dissolution of the product and the selection of the solution while cooling the consolidation of potassium chloride (see, for example, "Ways to further intensify and increase the efficiency of production of potash fertilizers" n-t proc. may 28-30, 1985 , Perm S. 114-115, and.with. USSR N 1125191, class C 01 D 3/04, and.with. USSR N 1490082, class C 01 D 3/08 from 16.03.89). Known methods difficult to implement and energy-intensive, as suggest recycling actually finished products on gallerycheck technologies associated with large energy consumption for heating and cooling of the solid and liquid phases. A method of obtaining potassium chloride, including the dissolution of fine substandard potassium chloride in water at a flow rate of 0.3-1.0 wt. h water at 1 wt.h. potassium chloride, followed by drying of the suspension in the fluidized bed apparatus at 110-130oC - prototype (patent RF N 2114784, class C 01 D 3/08 from 10.07.98). The method can solve the problem using fine potassium chloride, however, difficult to implement and energy-intensive, as it involves the use of operations thickening, filtration, and the need for recycling of part of the liquid phase in the technological cycle of primary production. The present invention enables to simplify the process of obtaining potassium chloride with improved physical-mechanical properties. This dlya obtaining suspensions with W:T=0.7 to 1.5 in the fluidized bed apparatus at 110-135oC, the proposed method of drying a suspension of potassium chloride are together with the filtered potassium chloride, for example, obtained by flotation or gallerycheck factories, while the share suspension in the material entering the drying is 10-90%, and the suspension is prepared in water or a solution of potassium chloride. The proposed method for the preparation of suspensions used cyclone dust gallerycheck or flotation mills, crystalline product obtained wet or dry classification, and cyclone dust from the fluidized bed apparatus with a joint dehydration filtered potassium chloride and cyclone dust obtained from the same device. For the preparation of a suspension of potassium chloride can be used water or a solution of potassium chloride, for example, from a system of wet gas purification furnace of the fluidized bed. The essence of the method consists in the following. Potassium chloride obtained in the flotation or gallerycheck production, after filtration and drying in fluidized bed apparatus contains fractions -0,1% to 15%, and the fraction -0,2 mm to 30%, depending on the gas velocity in the layer, these fractions are submitted to the system gazoochistnoe together with the main product. In accordance with the known method of cyclone dust dissolved in water at a flow rate of 0.3-1.0 wt.h. water at 1 wt.h. fine potassium chloride, followed by drying of the suspension with W:T=0,7-1,5 supplied through a pneumatic nozzle in a fluidized bed apparatus at a speed of gases from 1.8 to 2.5 m/s and the resistance of the layer up to 600 mm of water. Art. In contrast to the known method the proposed method of drying a suspension of potassium chloride are together with the filtered potassium chloride, while the share suspension in the material entering the drying is 10-90%. The filtered potassium chloride, typically has a moisture content of 6-8% and served continuously mechanical zabrasyvatelem in the furnace of the fluidized bed. The fine suspension of potassium chloride is fed into the furnace, for example, through a pneumatic nozzle and is prepared by adding water to the fine potassium chloride or chloride Cali obtained, for example, a wet gas purification apparatus of the fluidized bed. The proposed method differs from known as simultaneous dehydration of potassium chloride coming from the filter, and the fine suspension of potassium chloride, supplied in kepashiato on larger particles filtered potassium chloride and their fastening dehydrating liquid phase saturated solution of potassium chloride with increasing average particle size of the whole product. In the proposed method, the share suspension in the material entering the drying is 10-90%. The table shows the granulometric composition of potassium chloride, obtained by the proposed method for simultaneous drying of the filtered potassium chloride and a suspension of fine potassium chloride fraction -0,1 mm in the fluidized bed apparatus. These data indicate that the spraying of a suspension of fine potassium chloride with simultaneous supply of potassium chloride with filter for drying is an effective operation for agglomeration cyclone dust and contributing to a sharp decrease in the content of fine classes in primary products without additional work on her conditioning at the expense of classification. In addition, the spray suspension with simultaneous drying of the main product also promotes the integration of the particles in comparison with the known method, since the proposed method agglomeration occurs on the particle product having a much smaller surface than the cyclone dust. The proposed method can be used for p is filtrowanie potassium chloride and a suspension of fine potassium chloride. This technical solution allows the use of a fluidized bed apparatus as classifier and get completely dust-free commercial product with the return of the cyclone dust back into the fluidized bed apparatus the most cost-effective way. In addition, the present invention allows for the preparation of suspensions to use instead of water solution of potassium chloride, obtained, for example, in the wet gas cleaning flue gases. This technical solution allows to receive additional economic benefit by reducing losses of the target product in the path of purification and to reduce the consumption of heat for drying a suspension containing water, and a solution of potassium chloride. The method is as follows. Fine potassium chloride, for example cyclone dust flotation or gallerycheck factories, dissolve with obtaining a suspension of potassium chloride with W:T=0,7-1,5 with vigorous stirring for 10-30 minutes, the resulting suspension is sprayed, for example, through a pneumatic spray nozzle of the fluidized bed, which simultaneously serves filtered potassium chloride obtained in primary production by flotation or dissolution-kristallizirovany suspension W:T=0,7-1,5 can be used a solution of potassium chloride, obtained, for example, a wet gas purification apparatus of the fluidized bed, and as a fine potassium chloride - cyclone dust generated in the same fluidized bed apparatus with a joint dehydration potassium chloride and filtered suspension. The increase in W:T suspension over 1.5 leads to deterioration of technical and economic indicators of the drying process due to the cost of removing the excess water, and decrease W:T less than 0.7 reduces the fluidity of the suspension and creates difficulties in its submission to the office of the fluidized bed. Examples of the methodExample 1 100 wt. including cyclone dust with a temperature of 80oC flotation plant of OJSC "Uralkali" was dissolved in water to obtain suspensions with W:T=1,0 for 20 min. water Flow thus amounted to 50.4 wt.h. The resulting suspension was sprayed through a pneumatic nozzle in a fluidized bed apparatus of the COP, which was previously loaded cushion of dry potassium chloride to the resistance layer 600 mm of water. senior Simultaneously into the apparatus through the rotary zabrasyvatelej filed of 225.6 wt.h. potassium chloride with filters photofabric with moisture content of 7%, while the share suspension in the material entering the drying, amounted to 40% by weight. Suspen the Arata through discharge device is carried out continuously with the increase in the resistance of the layer. Received the product with the content of the class -0,2+0,1 mm - 3,1%, class -0,1 mm to 2.4%. The product quality meets the requirements of GOST 4568-83 for potash (K2O -60,1%, H2) - 0.8%) and met the requirements of the export content class -0,1 mm (not more than 5%). Example 2. In accordance with example 1 was carried out joint dewatering suspensions of micronized potassium chloride and crude potassium chloride with filters galilejskogo production, but for the preparation of suspensions with W:T=1,5 used cyclone dust from the fluidized bed apparatus with a joint dehydration of potassium chloride and the suspension cyclone dust made from unloading cyclones of the same apparatus, with the share suspension in the material 80%. Received the product with the content of the class -0,1 mm and 2.7%. Example 3 In accordance with example 1 was carried out by the method for the preparation of suspensions with W:T=1,3 used a solution of potassium chloride with KCl content - 22,4% of system wet gas cleaning plant of the same fluidized bed apparatus. Received the product with the content of the class -0,1 mm and 2.1%. 1. The method of obtaining potassium chloride, including the dissolution of micronized potassium chloride to obtain suspension and polozenie potassium chloride are simultaneously filtered potassium chloride, the share suspension in the material entering the drying, is 10 to 90%, and the suspension is prepared in water or a solution of potassium chloride. 2. The method according to p. 1, characterized in that for the preparation of suspensions used cyclone dust from the fluidized bed apparatus with a joint dehydration filtered potassium chloride and the suspension cyclone dust obtained from the same device. 3. The method according to p. 1, characterized in that as a solution of potassium chloride use the solution of the system of wet gas purification apparatus of the fluidized bed.
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