Amidohydroxycarboxylic acid/hydroximic acid compound and application thereof to ore flotation

A technology of amido hydroxycarboxylic acid and hydroxamic acid, which is applied in flotation, solid separation, etc., can solve the problems of insufficient hydrophobicity of amino acids, achieve good biocompatibility and water solubility, high flotation separation, and improve foam flotation The effect of selection efficiency

Active Publication Date: 2019-03-29
HUNAN UNIV OF CHINESE MEDICINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, amino acids show strong selectivity as collectors, but amino acids are not hydrophobic enough, and the collection ability of amino acids as collectors alone needs to be improved.

Method used

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  • Amidohydroxycarboxylic acid/hydroximic acid compound and application thereof to ore flotation
  • Amidohydroxycarboxylic acid/hydroximic acid compound and application thereof to ore flotation
  • Amidohydroxycarboxylic acid/hydroximic acid compound and application thereof to ore flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: the synthetic route of amido hydroxycarboxylic acid / hydroxamic acid compound (taking 2-(2-hexadecylamino-3-hydroxybutylamino)-3-hydroxybutyric acid as an example), control reactor The temperature is 30°C, 25.64 parts of palmitic acid with a purity of 99% and 250 parts of dichloromethane are added to 38.40 parts of 2-(7-benzotriazole oxide)-N,N,N',N'-tetramethyl Add urea hexafluorophosphate to the reactor, react for 30min, then add 11.91 parts of 2-amino-3-hydroxy-butyric acid with a purity of 99% and 20.2 parts of triethylamine, and react for 10 hours; add 76.80 parts of 2-( 7-benzotriazole oxide)-N,N,N',N'-tetramethyluronium hexafluorophosphate, reacted for 30min, then added 23.82 parts of 2-amino-3-hydroxyl-butanol with a purity of 99% acid and 40.4 parts of triethylamine, react for 1h to 16h, stop the reaction, distill off dichloromethane. Wash with water, and adjust the pH of the reaction solution to 5 with 0.1M hydrochloric acid to obtain the desired...

Embodiment 2

[0047] Embodiment 2: Application of amido hydroxycarboxylic acid / hydroxamic acid compounds in tungsten ore flotation

[0048] Put scheelite and wolframite pure minerals with grinding fineness -200 mesh accounting for 85% respectively in 40mL flotation tank, add 40mL water, stir for 1min to mix evenly, add 2500g / t sodium carbonate to adjust pH Value, stirred for 2mins, then added the amount of collector 100g / t, foaming agent 2 # oil 15g / t under the conditions of flotation. The flotation contrast test results of two kinds of amino acid collectors among the present invention and commonly used benzohydroxamic acid and oleic acid are shown in Table 1. Its flotation process flow chart is shown in figure 1 . It can be seen from Table 1 that the collection ability of amino acid compounds on scheelite and wolframite is significantly stronger than that of commonly used oleic acid and benzyl hydroxamic acid.

[0049] Table 1 Experimental results of flotation of pure minerals with four...

Embodiment 3

[0051] Example 3: Application of 2-(2-decaneamino-3-hydroxybutylamino)-3-hydroxybutyl hydroxamic acid in tungsten ore flotation

[0052] A sulfur beneficiation tailings containing WO in Yunnan 3 0.24%, grinding fineness -200 mesh accounts for 85%, use 3000g / t sodium carbonate to adjust pH value, 1500g / t water glass as dispersant, collector dosage 400g / t, 2# oil 40g / t Under the same conditions, after a roughing operation, tungsten crude concentrate is obtained, and the flotation of 2-(2-decaneamino-3-hydroxybutylamino)-3-hydroxybutyl hydroxamic acid and benzyl hydroxamic acid The results are shown in Table 2. It shows that 2-(2-decaneamino-3-hydroxybutylamino)-3-hydroxybutyl hydroxamic acid achieves higher recovery of tungsten than benzohydroxamic acid, and the recovery rate improves 10.52%.

[0053] Table 2 Flotation conditions and results of tungsten ore

[0054]

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Abstract

The invention provides an amidohydroxycarboxylic acid / hydroximic acid compound and application thereof to ore flotation. The compound has a structural formula shown as a formula (I) in the description, wherein in the formula (I), R1 represents C6-C18 aliphatic groups; R2 represents C1-C4 aliphatic groups; M represents -OH, -ONa, -OK, -NHOH, -NHONa or -NHOK. The amidohydroxycarboxylic acid / hydroximic acid compound provided by the invention is used as a collecting agent, and can reinforce the chelation and recognition effects of the collecting agent on metal oxidized ore; the ordered arrangementof the collecting agent on the surface of the ore is promoted; tungsten ore, rare earth ore, tin ore, lithium mineral, phosphorite, manganese oxide roe, copper oxide ore, fluorite or ilmenite can beeffectively recovered through floatation; the advantages of high collecting capability, high selectivity, low ton ore dosage and the like are realized; the compound is particularly suitable for beingused for treating refractory fine particle ores.

Description

technical field [0001] The invention relates to amido hydroxycarboxylic acid / hydroxamic acid compound and its application in mineral flotation. Background technique [0002] Amino hydroxycarboxylic acid / hydroxamic acid surfactants have structure and hydrocarbon hydrophobic groups in the structure, and have high surface activity and aggregation performance. Therefore, these compounds are widely used in drug carriers, petroleum viscosity reduction and Sewage treatment has become one of the current research hotspots. Common functional groups used as collectors include: hydroxyl, carboxyl, amido, sulfonic acid, arsinic acid, phosphonic acid, hydroxime, etc. At present, the collectors commonly used are single functional groups, but the collectors with single functional groups have poor selectivity. Arsine and phosphonic acid groups have certain toxicity and will cause harm to the environment during use. With the requirements of environmental protection, it is difficult for this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/02
CPCB03D1/01B03D2201/02B03D2203/02
Inventor 邓兰青马鑫左瑞罗大光杨岩涛唐昱黄莉杨崧
Owner HUNAN UNIV OF CHINESE MEDICINE
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