amino carboxylic acid as phosphate flotation reagent in south africa

Flotation plant is widely used in various fields of ore dressing industry. For example, the separating of gold ore, silver, galena, sphalerite, chalcopyrite, chalcocite, molybdenite, pyrite, nickel sulfide mineral, malachite, cerussite, smithsonite, he

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Hematite ore is an important mineral resource. With 70% iron content and the large iron output capacity, hematite is the most important iron ore. To improve the comprehensive usage efficiency of hematite, hematite beneficiation process is necessary. We ne

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Amino Trimethyl Phosphate Acid ATMP Glutaraldehyde Hydroxyphosphonacetic Acid HPAA N N – Dimethyl hydroxylamine DEHA PhosphIno Carboxylic Acid Polyacrylic Acid PAA Polyamine Silicon Dispersant Sodium Chlorite 80 Tolytriazole

Jan 01 1992 · In the following phosphate flotation step high quality phosphate concentrates containing about 315 P205 07 MgO and 3 insolubles are obtained using a unique phosphate flotation procedure Reagent requirements for the process are modest being of the order of about 15175 kgt 3338 lbt oleic acid 066 kgt 13 lbt H2S04 and 05

Amino Acids Amino acids are organic compounds containing amine and carboxylic acid functional groups More than 500 amino acids are known and they can be classified according to the core structural functional groups locations as alpha beta gamma or delta In the form of proteins amino acids encompass the second largest component of human muscles cells and other tissues

acids are lactic acid 25 formic acid 26 and suc cinic acid 27 Minerals 2019 9 253 7 of 18 In order to o btain a satisfa ctory removal of th e carbonate gangue minerals it is necessary to

ChloroNNNNtetramethylformamidinium hexafluorophosphate TCFH 1 is utilized as a condensation reagent for sterically congested carboxylic acids and ent of 1 to a carboxylic acid and an amine at room temperature along with Nmethylimidazole as an activator affords the corresponding amide in good yields The reaction proceeds with sterically hinderd amino acids such as

May 01 2018 · 433 Amino phosphonic acids and their salts Amino phosphonic acids and their salts have been suggested in a patent for the flotation of scheelite at a wide range of pH between 3 and 11 An amino phosphonic compound was recently patented by Sun et al as selective enough to separate scheelite from calcite fluorite or apatite 434

Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities In order to obtain a qualified phosphate concentrate the beneficiation of the lowgrade phosphate ore is hence of great necessity

US4081363A US05582040 US58204075A US4081363A US 4081363 A US4081363 A US 4081363A US 58204075 A US58204075 A US 58204075A US 4081363 A US4081363 A US 4081363A Authority US United States Prior art keywords process mineral partial ester structure flotation Prior art date 19750529 Legal status The legal status is an assumption and is not a legal conclusion

Protected amino acids refer to those amino acids in which the amine group the carboxylic acid group or both groups are protected In organic synthesis Nprotected amino acids are often employed as important intermediates in various areas such as peptide synthesis asymmetric synthesis medicinal chemistry and polymer chemistry In peptide synthesis by protecting the amine group of one

This method is useful for converting alkyl halides into corresponding carboxylic acids having one carbon atom more than that present in alkyl halides ascending the series Oxidation of Alkenes Strong oxidation of alkenes results in formation of carboxylic acids Alkenes can be oxidized to carboxylic acids with hot alkaline KMnO 4 Example