• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Extractive extraction of potassium chloride from carnallite ore, including the decomposition of ore with an aqueous solution of magnesium chloride, saturated with sodium chloride and potassium chloride, is characterized by the fact that, in order to simplify the process and make it possible to carry it out, ore deposit is made amine in the amount of 200-500 g / t of ore and an agent that causes the evolution of gas in solution, which is taken as hydrogen peroxide in the amount of 5.5-10.0 kg / t of ore or a mixture containing urea in the amount of 6 kg / t yi CO rows, sodium nitrite in an amount of 14 kg / t of ore, and 38% hydrochloric acid in an amount of 500 cm / ton of ore.
    公开号:SU1153823A3
    申请号:SU823398517
    申请日:1982-03-04
    公开日:1985-04-30
    发明作者:Бишара Мишель；Бодю Мишель；Коенсжен Жан-Пьер；Меро Мишель；Зиммерманн Жан-Пьер
    申请人:Мин Де Потасс Д,Альсас С.А. (Фирма)；
    IPC主号:
    专利说明:

    f The invention relates to the treatment of carnallite ores, more specifically to a method for extracting potassium chloride therefrom. There is a known method for treating carnatite in the depths of a mine by injecting mother liquor into a deposit to dissolve carnallite without decomposition. The resulting solution is fed top up by concentrating to re-crystallize the carnallite. Next, the precipitated carnallite is treated with an aqueous solution of magnesium chloride, saturated with sodium and potassium chlorides, with separation from the solution of precipitated artificial sylvinite and subsequent extraction of potassium chloride from it. The disadvantage of the method lies in the significant consumption of brine and, of course, in the considerable energy required to convert this brine and recrystallize carnallite. There is also known a method for extracting potassium chloride from carnallite ore by decomposing carnallite at depth with an aqueous solution of magnesium chloride saturated with sodium and potassium chlorides and directly extracted from artificial cavities of sylvite 2 formed. In this case, sylvinite is deposited on the walls. with the exception of certain places, any attempts to dissolve it, or to form a suspension, i.e. This method allows only magnesium chloride and potassium chloride to be extracted, which are dissolved in a dissolving carnalite brine. Potassium chloride, which is extracted in this way, accounts for only 15-20% of the total amount contained in the ore being processed. This method significantly reduces the consumption of dissolving brine, but is rather complicated ... The purpose of the invention is to simplify the method and make it possible to carry it out at the place where the ore is deposited. According to the method for extracting potassium chloride from carnallite ore, including ore decomposition aqueous solution of magnesium chloride, saturated sodium chloride and potassium chloride, dilution, is carried out in the presence of fatty amine acetate in an amount of 200-500 g / t of ore and an agent causing gas evolution in p The solution, which takes hydrogen peroxide in the amount of 5.5-10.0 kg / ton of ore or a mixture containing urea in the amount of 6 kg / ton of ore, sodium nitrite in the amount of 14 kg / ton of ore and 38% salt acid in the amount of 500 cm / ton of ORE. The proposed method can be used on any installations where carnallite ore is decomposed with brine to precipitate artificial sylvinite. This method allows the simultaneous decomposition of carnallite and the separation of sylvinite. The flotation agent .-; was found to be attached to the seed crystal of potassium chloride formed during the decomposition of carnallite ore. Thus, a seed crystal of potassium chloride, simultaneously hydrophobic and aerophilic, is obtained directly. Therefore, gas bubbles formed as a result of its growth, the juveniles, are preferably attached to potassium chloride, and they release potassium chloride together with sodium chloride to the brine surface during decomposition. Thus, the pre-concentration of sylvinite in the cavity is carried out and, consequently, sylvinite Bphodhod to the surface of the mine is already enriched. The flotation agent for potassium chloride can be any limestone flotation agent suitable for treatment of sylvinite flotation. It can be, for example, a fatty amine or a mixture of fatty amines containing 12–20 carbon atoms, or a salt of these amines, or mixtures of an amine. Such a salt may in particular be a hydrochloride or an acetate. An additive capable of evoking gas in brine may be carbonate, azonitrile, nitro-derivative or peroxide. In particular, it is possible to use an industrial product that does not interact with those that leave ores, such as a reissued compound, for example, in hydrogen peroxide. Note that the decomposition of hydrogen peroxide is favored by a high concentration of nones in brine.
    The amount of flotation agent used generally varies in the range of 200-500 g / ton of recoverable CS L.
    The number of additives that can cause the release of gas in brine depends on the type of additive. In the case of hydrogen peroxide, this amount is approximately 5.5-10.0 kg per ton of CSE recovered.
    When carnallite ore is decomposed at the place of bedding, either a separate brine or a pipeline is used to deliver brine on one side and a flotation agent with an additive capable of causing gas evolution in brine, on the other. The flotation agent and the gas bubbles are preferably fixed on the precipitated CS and carry it along with the NaCt in the form of foam onto the surface of the brine in the cavity. This foam is entrained by raising the brine stream through a pipeline installed for this purpose. On the surface of the mine, the foam is separated from the brine. Artificial sylvinite foam is enriched in KCt either simply by washing or by using another known procedure in order to obtain a cost-effective KS &
    The brine fraction separated from the foam can be re-directed into the cavity in order to provide an appropriate upward flow. Such recycling also allows recycling of some amounts of a flotation agent or additive capable of causing gas evolution that has not reacted, and, therefore, to limit the consumption of reagent
    Example 1. Roughly crushed 100 g of carnallite with an average composition,%:,; KCE 24.8; 36.0; NaCE 7.5, and the obtained pieces are mixed with a solution consisting of 45 cm of water, 3 cm of hydrogen peroxide in tlO volumes (or 10 kg / ton of ore) and 2 cm of 1% aqueous solution of fatty amine acetate (or 200 g / t ores). To remove sylvinite, the circulation of the 500 cm / h of magnesium-containing brine, suspended CS and NaCC containing 300 g / l of MgC is carried out. The composition of the recirculated brine is kept constant. Foam is formed, which is collected and dried.
    Thus, a dried flotation concentrate is obtained, having the following composition, g: KC E 18.04; NaCC 0.25; MgCC 0.72. Flotation concentrate consists of 92.5% of KCf. The dried concentrate has the following composition, g: KSE.3,25; NaC 5.70; MgCeo, 19.
    The yield of recovered CS-relative to COP contained in the ore is 72.5%.
    Example 2. In a carnallite ore block with dimensions of 14 x 19 x 19 cm, a hole was drilled into which a brine injection pipe was placed to decompose the ore, and a second pipe was introduced into the same hole to extract the decomposition product pulp. A magnesium-containing solution is introduced into the cavity at the rate of 420 cm / h, which has the following composition, g / l: MgCt 252; KCt 59; NaCt 56, to which 18 cm of a solution containing 6% by volume of hydrogen peroxide in 110 volumes (or 5.5 kg / ton of ore) 20 cm of a 1% solution of fatty amine acetate (or 200 g / ton of ore) and 74 cm of water.
    1.6 kg of ore is dissolved and the test: stop,. when the dissolution process reaches the outer wall of the block. Ore (1600 g) is obtained after decomposition, containing, g: KC1 396.8; MgC 507.2, - Nace 120; 576.0. .
    Dried flotation concentrate (330 g) contains, g: KCE 254.6; NaCE 29.8iMgC &21.3; HgO 24.3 (crystallization). The content of the extracted COP 6 77%.
    The spent mother liquor contains, g / l: HgC (y3Qr, KCt 45; NaCt 36; HjO 888.
    The yield of recovered CS in terms of ore after decomposition is 64.2%.
    Example 3. In a carnallite ore block of 18xt8x20 cm in size, a hole was drilled with a diameter of 3.2 cm to a depth of 1-2 cm. Two tubes were inserted into this hole (one for feeding decomposition solution, the other for feeding reagents) and one more tube for pulp extraction. The feed is carried out at the rate of 3 reagent solutions, formed: 20 cm in 110 volumes (or 7.7 kg / t of ore) 35 cm of 1% aqueous solution of amine acetate (or 450 g / t of ore) 30 cm, J1 at the rate of 400 solution for
    decomposition formed: 7 cm / h 483 cm- / h of uterine recirculation solution. the following starting composition, g / l:, KCE-59; NaCt53
    The stock recycle solution is designed to improve pulp flow. 3.7 kg of ore from the block are dissolved, the test is terminated when the decomposition process reaches the side wall.
    Ore (3.710 g) is obtained, after decomposition, containing, g: MgCP21 176 KCE 910; Nace 278; 1,336; flotation concentrate (855 g), containing (on dry salt), g: ffeCljAO (A, 7%); KCt 717 (83.9%); NaCe 98 (11.3%); a heavy fraction (salt at the bottom of the cavity after the test) containing, g:, keb-18; NaCt 5.
    Approximately 35 g of the salt residue remains adhered to the upper part of the cavity.
    The mother liquor after the test has the following composition, g / l: MgCCg 314; KSe 45, NaCE 30.
    The yield of the extracted COP 0 relative to the content of the COP C-in the ore is 78%.
    The content of KS in the concentrate is 83.9% without washing.
    About 40% of NaC from its initial content in the ore after decomposition remains in the block, which illustrates the selectivity of this method,
    The reagent consumption for this test increased to: 40 kg KCC-t obtained 2.3 kg flotation agent / tonne obtained by COP I.
    Example 4. Roughly grated 100 g of carnallite, having an average composition,%: Mgce2 33.0; COP 25.8; 37.4; NaC6 3.8, and the obtained pieces are mixed in a container with 128 g of a magnesium-containing solution containing 247 g / l MgCCj, KS 6 saturated and NaCE.
    To recover sylvinite, a flotation agent and an additive capable of evacuating the gas gase are gradually introduced into the tank.
    Reagents were used in the following amounts: 0.6 g of urea and 1 g of a 2% solution of fat-acetate acetate.
    , t with
    amine dissolved in 17.5 cm of water, and 1.38 g of sodium nitrite dissolved in 17.5 cm of water.
    During this operation, the brine is injected and circulated in a closed loop at a rate of 300 cm / h, its pH is maintained close to 3.0 by modulating the injection of a solution containing 1 g of concentrated hydrochloric acid in 15 cm of water. Foam is formed, which is collected and dried.
    Thus, 23.3 g of floated dried concentrate having the following composition are obtained, wt%: KSE91.8, NaCt 4.0; MgCe2.1,9.
    The dried residue (4.6 g) has the following composition, wt.%: COP 11.2, NaCe 83.3; MgCli2.5.
    The recovery rate of KCtno to CSE contained in the ore is 82.9%.
    The reagents were injected at the rate of a flotation agent (amine acetate): 500 g / ton carnallite.
    Additives to provoke a gas gassing: urea 6 kg / ton of carnallite to be processed; NaNOj 14 kg / ton of processed carnallite Hct 38% are 500 cm / ton of processed carnallite.
    Thus, the proposed method makes it possible to extract the COP directly at the place of occurrence of carnallite ore, while the method is simpler than being x.
    权利要求:
    Claims (1)
    [1]
    METHOD FOR EXTRACTION OF POTASSIUM CHLORIDE FROM CARNALLITE ORE, including decomposition of ore with an aqueous solution of magnesium chloride, saturated sodium chloride and potassium chloride, characterized in that, in order to simplify the method and make it possible to carry it out at the ore site, decomposition is carried out in the presence of fatty amine acetate in an amount of 200-500 g / t of ore and an agent that causes gas to be dissolved in a solution, in which quantity hydrogen peroxide is taken in an amount
    5.5-10.0 kg / t of ore or a mixture containing urea in an amount of 6 kg / t of ore g, sodium nitrite in an amount of 14 kg / t of ore and 38% hydrochloric acid in an amount of 500 cm ^ / t ore.
    THX
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    ES8303248A1|1983-02-01|
    US4504092A|1985-03-12|
    DE3207635C2|1992-02-06|
    OA07036A|1983-12-31|
    NL8200869A|1982-10-01|
    FR2501181B1|1984-02-17|
    BR8201150A|1983-01-11|
    CA1185797A|1985-04-23|
    DE3207635A1|1982-09-16|
    FR2501181A1|1982-09-10|
    ES510128A0|1983-02-01|
    IT1148103B|1986-11-26|
    IT8247907D0|1982-03-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2448046C2|2007-03-06|2012-04-20|Потасио Рио Колорадо С.А.|Method of separating potassium chloride and sodium chloride|CA613526A|1961-01-31|Martin Jean|Separation of crystallized potassium chloride from potassium ores|
    US2046312A|1934-10-16|1936-07-07|Potash Company|Process of concentrating ores|
    US2604988A|1946-07-16|1952-07-29|Mines Domaniales De Potasse|Froth flotation of potassium chloride from sodium chloride|
    US2702121A|1950-01-11|1955-02-15|Public Ets|Methods of froth-flotation|
    US2689649A|1952-05-15|1954-09-21|Int Minerals & Chem Corp|Concentration of sylvite ores|
    US2921678A|1957-02-19|1960-01-19|Columbia Southern Chem Corp|Novel flotation process|
    FR1206808A|1957-06-13|1960-02-11|Int Minerals & Chem Corp|Processing of potash ores|
    US3009575A|1957-06-28|1961-11-21|Gen Mills Inc|Collection in flotation of sylvite|
    US2968525A|1958-06-09|1961-01-17|Int Minerals & Chem Corp|Potash ore treatment|
    DE1142802B|1961-08-26|1963-01-31|Kali Forschungsanstalt Gmbh|Process for the electrostatic processing of raw salts containing carnallite|
    US3304249A|1964-02-28|1967-02-14|Katz Herbert|Method of stabilizing a fluidized bed using a glow discharge|
    DE1232892B|1964-05-02|1967-01-26|Kali Forschungsinstitut Sonder|Combined decomposition-flotation process for the production of high-quality, sulphatic potash salts from carnallitic mixed raw salts|
    ES308099A1|1965-01-14|1965-04-16|Plantalamor Rovira Angel|Procedure to benefit deposits of carnalite or carnalite-silvinita. |
    US3355212A|1965-07-02|1967-11-28|Reynolds Metals Co|Solution mining of carnallite|
    US3442553A|1966-11-04|1969-05-06|Texas Gulf Sulphur Co|Slurry mining of carnallite|
    US3644102A|1966-12-01|1972-02-22|Struthers Scientific Int Corp|Crystallization of potassium chloride from carnallite decomposition|
    FR1516906A|1967-01-06|1968-02-05|Mines Domaniales De Potasse|Potassium ores flotation process and new reagents used|
    US3817972A|1970-01-02|1974-06-18|Occidental Petroleum Corp|Amine flotation reagents|
    US3994531A|1971-09-03|1976-11-30|Continental Oil Company|Method of solution mining potassium chloride from subterranean deposits|DE3435124C2|1984-09-25|1987-03-05|Kali Und Salz Ag, 3500 Kassel, De|
    FR2579623B1|1985-03-28|1987-05-15|Alsace Mines Potasse|SAID PROCESS FOR CARNALLIC ORE PROCESSING|
    GB8711094D0|1987-05-11|1987-06-17|Ecc Int Ltd|Natural calcium carbonate ores|
    US5068092A|1990-05-21|1991-11-26|Akzo N.V.|Crystallizer, process and apparatus for producing sodium chloride crystals|
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    US8282898B2|2009-11-23|2012-10-09|Karnalyte Resources Inc.|Process for the formulation of potassium chloride from a carnallite source|
    RU2585013C2|2011-02-18|2016-05-27|Вале С.А.|Method of producing potassium chloride|
    CN102205976A|2011-04-08|2011-10-05|何茂雄|Recovery method of potassium ions in flotation tailing liquid and tailing|
    CN102583446B|2012-02-13|2013-07-24|河北工业大学|Method for preparing potassium chloride through decomposing carnallite by concentrated brine|
    RU2669622C1|2018-01-31|2018-10-12|Генкин Михаил Владимирович|Method and reactor for extracting sodium chloride and potassium chloride from polymineral sources|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8104391A|FR2501181B1|1981-03-05|1981-03-05|
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