The method of obtaining potassium fertilizers |
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IPC classes for russian patent The method of obtaining potassium fertilizers (RU 2196759):
 
 The method of obtaining potassium chloride / 2154025
The invention relates to techniques for processing fine potassium chloride, resulting in the production of potash fertilizers from sylvinite ores
 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 salt / 2167286
The method of obtaining potassium chloride / 2154025
The invention relates to techniques for processing fine potassium chloride, resulting in the production of potash fertilizers from sylvinite ores
 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
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 the field of production of potash fertilizers from sylvinite ores by flotation method. The essence of the method is that the classification of the foam product is carried out together with the centrate, the filtrate and washings from pallets belt vacuum filters, after dewatering of the concentrate, and the fraction of less than 0.1 mm is subjected to thickening and desliming, and the fraction of more than 0.1 mm is fed to the cleaners. The technical result consists in increasing product quality and reducing loss of useful product. 1 Il., table 2. The invention relates to the field of production of potash fertilizers from sylvinite ores by flotation method and can be used at the enterprises of OJSC "Uralkali" OJSC "Silvinit", etc. to produce high-quality fertilizer. Known methods for producing potash fertilizers, including desliming and flotation crushed ore, classification of the foam product, the cleaners and dewatering of the concentrate (patent GDR 142873, CL 05 D 1/02, 1980, USSR author's certificate 1351911, CL 05 D 1/02, 01 D 3/08, 15.11.87). The disadvantages of these methods is the low selectivity of complex Tehnologichesky the VA concentrate, reduction of losses of useful component. The method of obtaining potassium fertilizers includes desliming and flotation of sylvinite ore crushed, the classification of the foam product, together with the centrate, the filtrate and washings from pallets belt filters after dewatering of the concentrate fraction > 0.1 mm to the cleaners, and the fraction is less than 0.1 mm thickening and desliming. Table 1 presents the characteristics of the foam product, the supernatant, filtrate and rinse with pallets belt vacuum filters on fractions. As can be seen from table 1, the fraction of particles less than 0.1 mm in these products contains a relatively small amount of potassium chloride 45-48% and a significant amount of insoluble residue 3,2-3,5%, which affects peredishki - increase loss of potassium chloride and worse quality indicators concentrate. Therefore the fraction of particles less than 0.1 mm to highlight and focus on thickening together with industrial products and processed in a closed loop on the main flotation by known techniques. The composition of the products classified according to the fraction of 0.1 mm are presented in table 2. Power classification is prior theAs can be seen from table 2 the classification result by the fraction of 01 mm for cleaning out comes the product (fraction +0.1 mm) with improved characteristics in the content of potassium chloride and the insoluble residue that will have a positive impact on peredishki - reduces the loss of potassium chloride with industrial products and improves the quality of concentrate. The drawing shows the circuit implementation of the method of producing potash fertilizers. Ore after grinding bessellieu and platinuum. The obtained foamy product is mixed with centrate, the filtrate and washings from pallets belt vacuum filters and sent to the classification by fractions of 0.1 mm Fraction +0.1 mm is supplied to the cleaners, and the fraction is 0.1 mm with middlings condensed and enriched in a closed loop on the main flotation. Obtained at the cleaners concentrate is dewatered in centrifuges and belt vacuum filters and enters into the drying compartment, and the centrate, the filtrate and wash with pallets belt vacuum filters, as provided above, is mixed with a foaming product. Example. Foam product with a content of 76.4% potassium chloride and 1.6% insoluble residue density W: T= 1,1 mixed with centrate, the filtrate and washings with podonok with density W:T= 1,3 sent for classification. In the classification process get a fraction more than 0.1 mm with the content of 88.5% of potassium chloride and 0.8% insoluble residue with density W:T=0.7 and a fraction of less than 0.1 mm with the content of 46.3% potassium chloride and 3.3% insoluble residue with density W:T=3,9. The fraction > 0.1 mm diluted mother liquor to the density W:T=3.5 to 4.0 and sent to the cleaners, and the fraction of less than 0.1 mm thicken with middlings and with density W:T=2,5-3,0 sent for desliming. This method allows you to obtain a concentrate of high quality with less loss of useful component. The method of obtaining potassium fertilizers, including desliming and flotation crushed ore, classification of the foam product, the cleaners and dewatering of the concentrate, wherein the classification of the foam product is carried out together with the centrate, the filtrate and washings from pallets belt filters after dewatering of the concentrate fraction of more than 0.1 mm are sent to the cleaners, and the fraction of less than 0.1 mm thickening and desliming.
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