Potassium chloride obtaining method from sylvinite ore |
|
|
IPC classes for russian patent Potassium chloride obtaining method from sylvinite ore (RU 2366607):
 Method of controlling process of sylvinite ore dissolution / 2352385
Invention relates to technique of controlling processes of sylvinite ores dissolution and can be used in production of potassium chloride by dissolution-crystallisation method. Method of controlling processes of sylvinite ores dissolution includes regulation of ore supply depending on content of useful component in input flows, measuring ready solution temperature and determining sodium chloride content in solution by calculation method. Additionally determined are density, temperature and consumption of dissolving solution, content of sodium chloride in it is determined by content of useful component, density and temperature. Ore supply is calculated according to suggested equation and calculated value is given as task to system of weigher control.
 Method of producing brine for electrolysis / 2347746
Present invention can be used for obtaining aqueous saturated solutions of alkali metal halides, which are used in the production of chlorine and alkali from electrolysis. The method of producing aqueous saturated brine of alkali metal halides involves underground dissolving of salt deposits with simultaneous purification of brine in the brine production well. Purification from toxic impurities - calcium and magnesium compounds is done using spent brine of a halide of the corresponding metal as the solvent, obtained from an electrolysis unit with pH 9-12. The brine from the well is then purified from calcium and magnesium compounds.
Method for processing salt rejects of magnesium production / 2316604
Method comprises steps of grinding salt rejects material; leaching them by means of concentrated solution of potassium chloride; separating mother liquor and solid potassium chloride; washing potassium chloride and drying potassium chloride; before washing procedure, dissolving solid potassium chloride in water at temperature 70 - 90°C; filtering solution and cooling filtrate till temperature 10 - 25°C; filtering received suspension of potassium chloride; washing deposit by means of potassium chloride solution with concentration 300 - 350 g/dm3 and filtering it; returning prepared filtrate for leaching salt rejects material.
Method of separation of potassium chloride / 2315713
Proposed method includes dissolving of sylvinite, clarification of hot saturated lye, crystallization of product in presence of fluoro-reagents, thickening and filtration of suspension and treatment of non-clarified saturated lye. Clarified saturated lye is treated with hot solution saturated with potassium chloride before crystallization of product. Potassium chloride solution is obtained by dissolving off-grade floatation potassium chloride in water. Off-grade floatation potassium chloride is just cyclone dust, fine fractions of floatation product or filtered-off intermediate product used for forming sludge suspension which is clarified and is thickened after clarification and is directed for treatment of non-clarified saturated lye.
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.
 A method of obtaining a crystal of potassium chloride from the cyclone dust potash ore flotation concentrate / 2232130
The invention relates to the processing of sylvinite ores in potash and is intended for the production of white potassium chloride from the cyclone dust flotation concentrate
 The method of obtaining dust-free potassium fertilizers / 2215717
The invention relates to techniques for the production of potassium chloride from sylvinite ores with low content of dust fractions
 The method of obtaining potassium fertilizers / 2196759
The invention relates to the field of production of potash fertilizers from sylvinite ores by flotation method
The method of obtaining salt / 2167286
 Method of arsenides inhibition during floatation of multi-sulphide minerals / 2366514
Floatation method for selective extraction of expensive metals as well as method for extracting high content of nickel and metal copper concentrate from nickel-copper ore involves the following stages: wet grinding of ore thus obtaining suspension; suspension pH control to the pre-set value by adding reagents, providing oxidising atmosphere in the suspension, adding a combination of reagents from polyamine and the matters containing sulphur to the suspension in order to inhibit floatation of arsenide minerals for extracting expensive minerals and adding a combination of reagents from polyamine and sulphite to the suspension in order to inhibit arsenide minerals for extracting high content of nickel and metal copper concentrate from nickel-copper ore, repeated pH control of the suspension to the pre-set value by means of reagents, and adding the collecting agent in quantity of 10-125 g/t of the ore and the foaming agent in quantity of 10-60 g/t of the ore to the suspension.
 Method for floatation retreating of magnetite concentrates / 2365425
Invention is related to enrichment of minerals and may be used in retreating of magnetite concentrates. Method includes grinding, conditioning of pulp with cation collector and further main reverse floatation, to produce foam product - dump tails, and chamber product - concentrate. Grinding is carried out by attritioning in ball mill. Foaming agent is also added into conditioning additionally to cation collector, which is Flotigam reagent, from substances included in group of polyalkylene glycols. Foam product of main reverse floatation is supplied to retreating cycle, including operations of additional grinding, condensation, treatment of product by modifiers and final floatation, chamber product of which is combined with chamber product of main floatation to produce combined floatation magnetite concentrate.
 Method of flotation of ore and flow line for implementation of this method / 2360742
Method consists in ore crushing, in stabilisation of energy state of flotation disperse system, and in flotation with flotation reagents-collectors. During flotation into composition of flotation reagents-collectors there are additionally introduced N-acyl-sarcosine (oleil-sarcosine) at ratio of from 1:0.5 to 1:1. The method is realised on a flow line for ore flotation, including successively connected facilities for crumbling, classification, and stabilization of energy state, also a facility for supply of flotation reagents-collectors, and a flotation machine. The flow line is additionally equipped with a mixer-measuring device assembled before flotation machines and devices for supply of N-acyl-sarcosin arranged before the mixer-measuring device.
Method of flotation of ore and flow line for implementation of this method / 2360742
Method consists in ore crushing, in stabilisation of energy state of flotation disperse system, and in flotation with flotation reagents-collectors. During flotation into composition of flotation reagents-collectors there are additionally introduced N-acyl-sarcosine (oleil-sarcosine) at ratio of from 1:0.5 to 1:1. The method is realised on a flow line for ore flotation, including successively connected facilities for crumbling, classification, and stabilization of energy state, also a facility for supply of flotation reagents-collectors, and a flotation machine. The flow line is additionally equipped with a mixer-measuring device assembled before flotation machines and devices for supply of N-acyl-sarcosin arranged before the mixer-measuring device.
 Method of determination of reagent foaming capacity regarding foam image and device for this method implementation / 2359760
Device of reagent foaming capacity determination that implements the method includes computer for calculating the average value of foam layer height, frequency and quantity of cylinder vibrations. Additionally there is shaking device for reagent mechanical shaking in cylinder by periodic movements of vertically installed cylinder upwards and downwards. Shaking device has a motor. Also, there is mechanism for conversion of rotational motion into translation one with cylinder fixed in it, lighting unit for lighting the foam in cylinder, camera, transducer-amplifier for transformation and amplification of computer signal for motor rotation speed control. Camera group output is connected to computer group input, computer group output is connected to transducer-amplifier group input, and transducer-amplifier output is connected to motor. Lighting unit is located in such a way that radiated light is directed to foam column in cylinder from above and from below. Camera is located in such a way that the cylinder fixed in mechanism for conversion of rotation movement into translation one is in its coverage.
Method of determination of reagent foaming capacity regarding foam image and device for this method implementation / 2359760
Device of reagent foaming capacity determination that implements the method includes computer for calculating the average value of foam layer height, frequency and quantity of cylinder vibrations. Additionally there is shaking device for reagent mechanical shaking in cylinder by periodic movements of vertically installed cylinder upwards and downwards. Shaking device has a motor. Also, there is mechanism for conversion of rotational motion into translation one with cylinder fixed in it, lighting unit for lighting the foam in cylinder, camera, transducer-amplifier for transformation and amplification of computer signal for motor rotation speed control. Camera group output is connected to computer group input, computer group output is connected to transducer-amplifier group input, and transducer-amplifier output is connected to motor. Lighting unit is located in such a way that radiated light is directed to foam column in cylinder from above and from below. Camera is located in such a way that the cylinder fixed in mechanism for conversion of rotation movement into translation one is in its coverage.
Flotation procedure of sulphide and oxidised gold containing ores / 2355477
Invention refers to concentration of minerals with flotation and can be implemented at processing as sulphide polymetallic, so oxidised gold containing ores, and also at additional recovery of gold and silver from earlier produced dumps of mining-concentrating production. The procedure consists in flotation at presence of xanthate, foaming agent and emulsion, containing silicon-organic liquid. As xanthate butyl xanthate is used, and as silicon-organic liquid silicon-organic polyethylsiloxane liquid is used; "ОППГ" is used as foaming agent. Polyvinyl alcohol and water are additionally introduced into emulsion; also ratio between silicon-organic polyethylsiloxane liquid, polyvinyl alcohol and water is from 79:0.5:17 to 81:1.5:20, while ratio of emulsion to butyl xanthate is from 0.5:1 to 1:1.
Flotation procedure of sulphide and oxidised gold containing ores / 2355477
Invention refers to concentration of minerals with flotation and can be implemented at processing as sulphide polymetallic, so oxidised gold containing ores, and also at additional recovery of gold and silver from earlier produced dumps of mining-concentrating production. The procedure consists in flotation at presence of xanthate, foaming agent and emulsion, containing silicon-organic liquid. As xanthate butyl xanthate is used, and as silicon-organic liquid silicon-organic polyethylsiloxane liquid is used; "ОППГ" is used as foaming agent. Polyvinyl alcohol and water are additionally introduced into emulsion; also ratio between silicon-organic polyethylsiloxane liquid, polyvinyl alcohol and water is from 79:0.5:17 to 81:1.5:20, while ratio of emulsion to butyl xanthate is from 0.5:1 to 1:1.
 Improved extraction of valuable metals / 2353435
Invention refers to mineral concentrating and can be implemented for continuous flotation of sulphides in ores and ore concentrates containing iron. The method of continuous flotation of sulphides in ores and ore concentrates containing iron consists in bringing pH of water pulp of ore or ore concentrates to the level of 6.5-8.5, in adding a reducer to modify a film from iron hydroxide on the surface of sulphides in ores and ore concentrates containing iron and facilitating adsorption of collector on ore containing sulphides, in adding collector to pulp before, during or after reducer addition, in aerating pulp to increase potential of pulp to the level sufficient for collector adsorption on ore containing sulphides, and in bubbling gas through pulp thus subjecting water pulp to foam floatation creating foam, which includes the said sulphide containing minerals. Then complex former is added to pulp during the stage of reducer addition for interacting with reduced iron produced at this stage and for minimising amount of iron hydroxide repeatedly forming film on iron containing sulphides. The method is implemented in the first and the second reservoirs of the installation for continuous conditioning connected between them with a transferring pipe; also bringing pH of water pulp is performed, when a piston makes pulp flow via the first reservoir, while reducer, collector and complex former addiing is performed in the second reservoir.
Method of differential flotation of copper minerals from hard-cleaning copper ore / 2352402
Method consists of ore crushing, differential flotation of sulfide copper minerals into the concentrate by successive addition of reagents - collector and foaming agent and differential flotation from the rest pulp into the other concentrate of oxidised copper minerals by successive addition of reagents - sulphidiser, foaming agent, collector, liquid glass modifier. At differential flotation of sulphide and oxidised copper minerals after addition of each of reagents it is implemented conditioning during 1-3 min. In the capacity of collector it is used butyl xanthate, and in the capacity of foaming agent - reagent T-80 in amount 30-60 g/t.
 Method of concentration of minerals / 2243824
The invention is pertinent to concentration of minerals and may be used at processing of the ore and nonmetallic raw material. The technical result is increased selectivity of extraction of the useful component and production of a better concentrate at preservation of a capability of its extraction. The method provides for conditioning of a feed stock in a mash with reagents, aeration of the mash, a random sampling of the concentrate, their dispersion by grades of size, determination of the grade of size, in which the share of waste rock is maximum and till the next sampling - treatment of the mash by sound vibrations with a frequency equal to a frequency of own vibrations of a waste rock particles from the found grade of size, concentration and production of a concentrate. The mash is treated with sound vibrations with a frequency f* of own vibrations of a waste rock particles from the found grade of size taken on the surface of the boundary of phases “ gas - a liquid ”, containing a condensed film of non-polar reagent, for example - lubricant. At that the frequency f*is determined from the defined dependence.
|
FIELD: mining. SUBSTANCE: method involves ore crushing, mill pulverising, sludge removal, grouping of desludged ore suspension. Coarse fraction of desludged ore suspension with density of 60-70% of solid matter is conditioned with emulsion of reagents, which is taken in quantity of 60-70% of total reagent flow; then, coarse fraction is combined with small fraction of desludged ore suspension with density of 30-40% of solid solid matter and supplied to the combined floatation. At that, the rest part of the emulsion of reagents is supplied in parts immediately to the combined floatation process thus obtaining crude concentrate and remainders. Crude concentrate is processed thus obtaining the finished product, and floatation remainders are grouped, small fraction of remainders is supplied to the dump pit, and coarse one - to the mill to be pulverised. When coarse fraction of ore suspension is being conditioned, water solution containing hydrochloride of high-molecular amine, oksal and catalytic gas oil at mass ratio of 1:0.4:0.4 correspondingly is used as emulsion of reagents. EFFECT: increasing sylvin extraction from ore and decreasing flow of reagents. 2 cl
The invention relates to the technology of production of mineral fertilizers and can be used when receiving potassium chloride from sylvinite ores by flotation method. A method of obtaining potassium chloride from sylvinite ores, including grinding, desliming, separate air conditioning reagents and separate flotation large (0.8 to 0.25 mm) and small (less than 0.25 mm) fraction (A.S. No. 1435301, B03D 1/00, Publ. 07.11.88. Bull. No. 41). The disadvantage of this method is the low efficiency of the flotation of coarse particles of potassium chloride and the loss of his tail. The closest to the proposed invention is a method of obtaining potassium chloride from sylvinite ores, including the crushing, grinding, desliming, the classification of the ore slurry, separate air conditioning emulsion reagents coarse and fine fractions in dense suspensions with emulsion amines, blowing agent and non-polar reagent, joint flotation of coarse and fine fractions with subsequent control flotation received tails and regrinding the coarse fraction of tailings control flotation in a separate loop. (P. of the Russian Federation No. 2136594, C01D 3/08, Publ. 10.09.99). The disadvantage of this method is the complexity and lack of effectiveness of the scheme enrichment of sylvinite ore in part the processing of large fractions of tails. The technical is the ski of the present invention is to improve the extraction of large fractions Silvina by conditioning them reagent in dense slurries, the loss reduction of the useful component aggregates the flotation tailings by high-performance classification, cosmelenia splices and in reducing the consumption of reagents. The technical result is achieved by a method of obtaining potassium chloride from sylvinite ore, including the crushing, grinding in the mill, desliming, classification obesshlamlennyj ore suspension, air conditioning large fraction of the ore slurry emulsion reagent with subsequent joint flotation of coarse and fine fractions of the ore slurry producing crude concentrate and tails, with a rough concentrate is processed to the finished product, and the flotation tailings are classified, a small fraction of tailings sent to the dump, and large - for regrinding, with a large fraction obesshlamlennyj ore slurry density (content) 60-70% solid condition emulsion of the reactants, taken in an amount of 60-70% from the total consumption of reagents, and then combine large fraction fine fraction obesshlamlennyj ore slurry with density (content) 30-40% solid and is directed to joint flotation, while the remaining portion of the emulsion of the reactants serves parts directly in the joint process of flotation, and a large fraction of the tailings return on regrinding in the mill. For conditioning large is racchi ore slurry as an emulsion of the reactants used an aqueous solution, contains hydrochloride high molecular weight amine, oxal and catalytic gas oil, respectively, in a mass ratio of 1:0,4:0,4. The method is as follows. Source material, such as crushed sylvinite ore (average diameter of 3-3,5 mm) suspended saturated salt solution to W:T=1.5 and 1.7. Received ore slurry is classified according to the class of 0.8-1.2 mm Large fraction classification is sent for crushing in ore, for example, a rod mill with follow-up audit (verification) classification of mill discharge class 0,8-1,2 mm, Then a large fraction of the control (calibration) the classification of return on regrinding in the ore mill. The fine fraction preliminary and control (calibration) classification are combined and sent to the desliming implemented hydromechanical and flotation methods. Next obesshlamlennyj ore slurry is classified in the class of 0.7-0.8 mm. thus receive a large fraction of classification, with the content of 60-70% solids which are mixed with the emulsion of the reactants (condition) in a horizontal paddle mixer for 2-4 min, using 60-70% of the emulsion of the reactants from the total consumption. As reagents for conditioning the ore slurry is used, for example, an aqueous solution of the hydrochloride is Yakovchenko amine, oxal and catalytic gas oil mass ratio of 1:0,4:0,4. A large fraction, treated with reagents, together with a small fraction of less than 0.8 mm and sent to the joint flotation, for example, in chamber mechanical photomachine FBD-6,3. The remaining reagents, 30-40% of the total flow, add by fractional feed directly into 3 and 5 cameras photomachine FBD-6,3 in the amount of 25-35% and 5% respectively. In the flotation get crude concentrate and tails. Rough concentrate is classified according to the class of 0.6 mm to produce zakopanego oversize product, and undersize product directed to prechistoy flotation. The oversize of the classification and concentrate cleaner cell after flattie are prepared product. The flotation tailings are classified according to the class of 0.7 mm Bottom product control classification tails after filtering is a final tailings, and the top product classification coarse fraction of tailings consist primarily of halite and intergrowths of halite with Silvina, shall be used for regrinding in the ore mill. Then doselectone the flotation tailings are the whole scheme of obtaining potassium chloride. For obesshlamlennyj ore slurry consisting of polydisperse particles with a range of particle size of 1.6-0 mm, the nature is but the difference of the specific surface of the particles, when handling reagents - gatherers affect the sorptive capacity of the particles, especially large ones, about 0.8 mm. Separate handling of reagents coarse and fine fractions of the ore slurry creates conditions for reduction of consumption of reagents, because processing of large fractions of the ore slurry is produced in the absence of fine-grained fractions Silvina, characterized by high sorption activity and, consequently, unreasonably increased consumption of reagents. Thus, the use of separate air-conditioning coarse and fine fractions of the ore slurry reduces the consumption of reagents by 8-10% compared to the existing scheme (the prototype), and removing Silvina by 1.5-2.0%. Conducted comprehensive research, including mineralogical, it was found that when using a scheme with separate air-conditioned reagents coarse and fine fractions and subsequent joint flotation compared with the scheme without any air conditioning in the fractions more 0,63 mm the flotation tailings is very significant decrease in the content of "free" Silvina, but this increases the content of intergrowths of halite with Silvina. Therefore, to extract Silvina of splices required inspection classification of the flotation tailings with gospelchoir large fractions enriched the aggregates, in the ore to the mill with the subsequent return of products cosmelenia tails in the flowsheet source of the ore slurry, which reduces the loss of potassium chloride with final tailings. The use of the proposed method will allow to increase the recovery of coarse particles (larger than 0.6), mostly "free" Silvina by improving its sorption capacity for conditioning in a dense slurry emulsion of the reactants and to reduce the consumption of reagents. Classification of the flotation tailings class of 0.7 mm allows to increase to 1.0-1.5% extraction Silvina of intergrowths of halite with Silvina by their subsequent disclosure of ore to the mill, and also to reduce the loss of useful component with dumps. In addition, the proposed method simplifies the technology of enrichment of sylvinite ore, and excludes the use of additional equipment. 1. The method of obtaining potassium chloride from sylvinite ore, including the crushing, grinding in the mill, desliming, classification obesshlamlennyj ore suspension, air conditioning large fraction of the ore slurry emulsion reagent with subsequent joint flotation of coarse and fine fractions of the ore slurry producing crude concentrate and tails, with a rough concentrate is processed to the finished product, and tails flotation classify ichirou, small fraction of tailings sent to the dump, and large - for regrinding, characterized in that a large fraction obesshlamlennyj ore slurry density of 60-70% solid condition emulsion of the reactants, taken in an amount of 60-70% of the total consumption of reagents, and then combine large fraction fine fraction obesshlamlennyj ore slurry with a density of 30-40% solid and is directed to joint flotation, while the remaining portion of the emulsion of the reactants serves parts directly in the joint process of flotation, and a large fraction of the tailings return on regrinding in the mill. 2. The method according to claim 1, characterized in that for the conditioning of a large fraction of the ore slurry in the quality of the emulsion of the reactants used an aqueous solution containing the hydrochloride of high molecular weight amine, oxal and catalytic gas oil, respectively, in a mass ratio of 1:0,4:0,4.
|
