• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention specifies an esterified dicarboxylic acid of the general formula in which R1 is an aliphatic hydrocarbon group with 7-21 carbon atoms, R11 is a hydrocarbon radical with 2-6 carbon atoms and A is an alkyleneoxy group derived from an alkylene oxide with 2-4 carbon atoms. Particularly preferred are compounds in which A relates to a group derived from ethylene oxide and in which R" is -CH=CH- or the phenylene group -C6H4-. The compound exhibits selective properties when used in the flotation of oxide and selt type minerals.
    公开号:SU1097182A3
    申请号:SU823438902
    申请日:1982-05-17
    公开日:1984-06-07
    发明作者:Мартин Эдвин Хеллстен Карл；Вилльям Клинберг Андерс
    申请人:Берол Кеми Аб (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to mineral processing, in particular, froth flotation methods. Known methods of froth flotation, including the introduction into the pulp of carboxylic acids or their salts f 1. The disadvantage of these methods is the low extraction of the valuable component, concentrate into concentrate and the poor quality of the concentrate, which is caused by the low efficiency of the carboxylic acids used. The closest in technical essence and the achieved effect to the proposed is a method of froth flotation, including the introduction into the pulp of the esterified dicarboxylic acid of the general formula Rl () nO i2S 00 where R is a Cg-Gj-alkyl group; Rj is a hydrocarbon radical with 2-6 carbon atoms; p is an integer from O to Y. These compounds have a foaming capacity and require additional anti-foaming agent, for example, liquid fuel. 2 The disadvantage of this method is the low quality of concentrate and the yield of the final product due to the increased foaming. The aim of the invention is to improve the quality of the concentrate and the final product yield. The goal is achieved by the method of froth flotation, including the introduction of esterified dicarboxylic acid into the pulp, and the acid of the general formula R COCHj CH OO - R -COOH, OO where R is CjC -i-aliphatic group R2 is introduced as ester dicarboxylic acid. - or phenylene. The group can be derived from carboxylic acids, such as 2-ethylenehexane, caprilov, caprinova, lauric acid, thyristic acid, palmetine acid, stearic acid, oleic acid, ricinolene, linolene, linolenic acid, abietic acid and dihydroabietic acid. Preferred are unsaturated carboxylic acids. Esterified dicarboxylic acids can be obtained by adding alkylene oxide to one mole of a carboxylic acid of the formula R -COOH, where R has the indicated value, to form a monospher of the formula R -COAN. 1 II O This reaction is preferably carried out with a molar deficiency of alkylene oxide. If necessary, non-esterified carboxylic acid and / or any ethylene glycol that are formed, and / or any diester, can be isolated from the reaction mixture before the monoester reacts with a dicarboxylic anhydride of the formula o a-R2-c o ,, Where R has the indicated value, in equivalent amounts or with a slight excess over the monoester. The reaction with dicarboxylic anhydride can be carried out with eO-IIS C. The final compound — Esterified dicarboxylic acids — is obtained in a total yield of 80% of the starting monocarboxylic acid. The resulting esterified dicarboxylic acid has the ability to selectively enrich minerals such as oxides and salts, such as apatite. This .. property can be strengthened in the presence of a hydrophobic secondary collector with an agent for mineral particles coated with esterified dicarboxylic acid. The esterified dicarboxylic acid is added in an amount of 10-1500 g / t ore, preferably 50-800 g / t, and a polar collector in an amount of 0-1000 g / m, preferably 5-750 g / t. When using an esterified dicarboxylic acid together with an apool collector, their ratio can vary widely from 1:10 to 20: 1, preferably from 1: 5 to 5: 1. In the process, it is also possible to add medium controllers. such as sodium carbonate and sodium hydroxide, as well as depressants and activators. The method is carried out as follows. The etherated carboxylic acids are introduced into the initial pulp and floated. Example 1 Waste from apatite processing plants containing 4 apatite, 6% calcite, 10% iron-containing minerals (mainly hepatitis) and silicates, is classified according to the class 98 mm, suspension is prepared at a T: W ratio of 1: 1.5 and transferred into the flotation vessel. 0.5 g of a 38% sodium silicate solution is added to the pulp and held for 5 minutes. A 1% aqueous dilution of compound 00 RCOCHjCH OCCHCHCOOH is prepared, where RC is the acyl group of tall oil fatty acid, which is then neutralized with sodium carbonate to pH 9. Then 30 ml and 0.6 g of liquid fuel are added to the pulp. Example 2. Experimental conditions are similar to those of Example 1, but 24 ml of solution and 0.6 g of liquid fuel are injected into the pulp. Example 3. For comparison, a 1% solution of Compound 12-14 V29 (corresponding to the known compound) is prepared and injected into the pulp as a fraction of 30 ml. The remaining conditions are the same as in Example 1, except for liquid fuel. Example 4. Experimental conditions are similar to experimental conditions, but the collector indicated in the previous example was 27 ml together with 0.6 g of liquid fuel Example 5. Experimental conditions are similar to those of Example 1, but the compound is introduced as esterified dicarboxylic acid. : RCOCH, CH.OC.C, H, COOH, o ", and o" g e RC is an acyl fatty acid group of tall oil. The results for examples 1-5 are shown in Table 1. Example 6. 700 g (3.38 mol) of coconut acid with 141 g (3.20 mol) of ethylene oxide are reacted the presence of 6.6 g of potassium hydroxide as a catalyst at 120 ° C for 3 hours. The product obtained, which is a yellow-brown liquid of low viscosity at a temperature slightly higher than room temperature, contains 72% by weight of ethylene glycol ester and monocosoic fatty acid. Other components are ethylene glycol ester of dicacon fatty acid, fatty acid soap, ethylene glycol and unreacted fatty acid. Then, 18.5 g (0.19 mol) of maleI-anhydride is added to 40 g of the reaction mixture obtained by the described method. The temperature was raised to and the mixture, in which the reaction took place, was left for one hour. The resulting reaction mixture, which is a soft paste, contains 68% by weight of compound i RCOOCH2CH, OOCHCHCOOH, in which RCO is an acyl group (Cd a-acyl), from coconut fatty acid. Example 7. 609 g (1.84 mol) of erucic acid are reacted with 73 g (1.66 mol) of ethylene oxide in the presence of 3.5 g of potassium hydroxide as a catalyst at 120 ° C for 3 hours. The resulting product, which is a light yellow pasty liquid, contains 75% by weight of ethylene glycol ester and mono-erucic acid. The other components are the ester of dicaric acid and ethylene glycol, erucic acid soap, ethylene glycol, and unreacted erucic acid, and 12 g (0.12 mol) of maleic anhydride are added to 40 g of the reaction mixture thus obtained. The temperature is raised to 80 ° C. The mixture is reacted for one hour. The resulting mixture, which is a soft paste, contains 68% by weight of the compound RCOOCH2CH, OOCHCHCOOH, wherein the RCO is an acyl group (), of erucic acid. Example 8. In the same manner as in Example 1, conditioning the noflBeprarot apatite containing tails of the same type as in Example 3. In a conditioned pulp, add 40 ml of an aqueous solution containing 0.5% by weight,% of the compound obtained in Example 1 and neutralized with carbonate. sodium, and 0.5 wt.% of the adduct of the oxide nonylphenol diethylene. The pulp is conditioned for another 5 minutes. The mixture is then subjected to pre-flotation at 20 ° C and a pH of 9. The content of P in the resulting product is 10.7% by weight, the yield of P is 96.5%. . The analysis corresponds to the content of apatite 57.6%. "EXAMPLE 9. The test is carried out in the same manner as before, except that 90 ml of an aqueous solution containing 1.0 weight.% Of the compound obtained in Example 2 is neutralized with sodium carbonate. The content of P in the resulting product is 13.2 wt.%; yield P is 92%. As a result of the subsequent processing of the pre-concentrate with a five-step purification, a target concentrate containing 16.9% TP at yield 65 is obtained. With these tests the group R; | -C 0, in which R., is also fully confirmed experimentally. -21 carbon atoms. The results of a comparative test of the proposed and known stericized dicarboxylic acids are given in the table.
    Thus, the use of the method allows to increase the quality of the concentrate by 2.5% and the yield by 17.2%.
    权利要求:
    Claims (2)
    [1]
    METHOD OF FOAM FLOTATION, comprising introducing an esterified dicarboxylic acid into the pulp, characterized in that, in order to improve the quality of the concentrate and the yield of the final product, an acid of the general formula is introduced into the pulp as an esterified dicarboxylic acid
    R 1 COCH 2 CH 2 OC-R 9 COOH
    II II 2 о о г De l 4 Cj-Cj-f-aliphatic group;
    [2]
    ₽2 ~ CH-CH- or phenylene.
    > U 1097182
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    同族专利:
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    引用文献:
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    US2302338A|1938-05-18|1942-11-17|Moeller August|Froth flotation|
    US2759607A|1951-02-27|1956-08-21|Union Oil Co|Flotation of hydrocarbon impurities|
    BE756244A|1969-09-17|1971-03-01|Eastman Kodak Co|NEW PHOTOSENSITIVE STABILIZED PHOTOGRAPHIC PRODUCT|
    US3779380A|1971-10-12|1973-12-18|Hercules Inc|Collector composition for ore flotation|
    US3910986A|1972-01-12|1975-10-07|Halcon International Inc|Process for oxidizing beta-acyloxyethyl-toluates|
    JPS539244B2|1973-01-19|1978-04-04|
    US4081363A|1975-05-29|1978-03-28|American Cyanamid Company|Mineral beneficiation by froth flotation: use of alcohol ethoxylate partial esters of polycarboxylic acids|
    CA1073563A|1976-01-19|1980-03-11|American Cyanamid Company|Process for beneficiation of non-sulfide ores|
    JPS6012622B2|1977-12-27|1985-04-02|Toray Industries|DE3641870A1|1986-12-08|1988-06-16|Henkel Kgaa|ALKYLSULFOSUCCINATES BASED ON PROPOXYLATED AND PROPOXYLATED AND ETHOXYLATED FATTY ALCOHOLS AS COLLECTORS FOR THE FLOTATION OF NON-SULFIDIC ORES|
    SE467239B|1989-04-05|1992-06-22|Berol Nobel Ab|PROCEDURES FOR FLOTATION OF SOIL METAL CONTAINING MINERAL AND AGENTS|
    DE4030160A1|1990-09-24|1992-03-26|Henkel Kgaa|PROCESS FOR EXTRACTION OF MINERALS FROM NON-SULFIDIC ORES BY FLOTATION|
    DE4138911A1|1991-11-27|1993-06-03|Henkel Kgaa|METHOD FOR OBTAINING MINERALS FROM NON-SULFIDIC ORES BY FLOTATION|
    JP4022595B2|2004-10-26|2007-12-19|コニカミノルタオプト株式会社|Imaging device|
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    CN113117594A|2021-05-26|2021-07-16|江南大学|Rosin-based surfactant and silicon dioxide nanoparticle composite stabilizer and application thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8103099A|SE447066B|1981-05-18|1981-05-18|PROCEDURE FOR FLOTATION OF OXIDIC MINERALS AND AGENTS|
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