Hydrazine derivative, preparation method of hydrazine derivative and application of hydrazine derivative as sulphide ore surfactant

A technology of derivatives and carboxylic acid derivatives, used in organic chemistry, solid separation, flotation, etc., can solve the problems of increasing the hydrophilicity of non-molybdenum sulfide ore, and achieve a simple preparation method, high-efficiency separation, and mild reaction conditions. Effect

Active Publication Date: 2017-05-31
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the defect that the surfactants used in the prior art cannot effectively increase the hydrophilicity of non-molybdenum sulfide ores, the purpose of the present invention is to provide a compound containi

Method used

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  • Hydrazine derivative, preparation method of hydrazine derivative and application of hydrazine derivative as sulphide ore surfactant
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  • Hydrazine derivative, preparation method of hydrazine derivative and application of hydrazine derivative as sulphide ore surfactant

Examples

Experimental program
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Effect test

Embodiment 1

[0055]

[0056] In a 250mL three-necked flask, add 0.105mol of sodium hydroxide and dissolve it in 10ml of water. When the temperature is lowered to 0°C, add 0.1mol of hydrazine; use a dropping funnel to add 0.1mol of carbon disulfide dropwise, and keep the reaction temperature within the range of 0-5°C Stir until the carbon disulfide reaction in the solution is complete, then add dropwise 0.1mol sodium chloroacetate aqueous solution, and keep the temperature at 0-5°C; after the dropwise addition of sodium chloroacetate solution is completed, the temperature rises to room temperature, and the reaction continues for two hours to obtain surface activity The solvent solution product was distilled off under reduced pressure to remove the solvent to obtain a solid product with a yield of 81% based on hydrazine.

Embodiment 2

[0058]

[0059] In a 250 mL three-neck flask, dissolve 0.105 mol of potassium hydroxide in 100 ml of methanol and place in an ice-water bath, while adding 0.1 mol of hydrazine at one time; use a dropping funnel to drop 0.1 mol of carbon disulfide until the reaction of carbon disulfide is complete. Use a separating funnel to separate the yellow liquid in the lower layer, mix the yellow liquid solvent with 40% methanol solution; keep the temperature at 0-5°C, add 0.1mol methanol solution of chloroacetic acid dropwise, after the reaction is completed, distill under reduced pressure to obtain the product, The product was obtained after recrystallization, and the yield was 85% based on hydrazine.

Embodiment 3

[0061] Modification of chalcopyrite by the surfactant product prepared in Example 1.

[0062] Add an appropriate amount of chalcopyrite powder into a 100 ml beaker, pour the prepared surfactant solution into the beaker, stir at room temperature for 2 hours, and filter to obtain modified chalcopyrite. The surface changes before and after modification are as follows figure 2 shown.

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Abstract

The invention provides a hydrazine derivative, and a preparation method and application of the hydrazine derivative. .The hydrazine derivative structurally contains sulphide ore surface solid-tropy groups of hydrazine, dithioacid and the like, and hydrophilic groups of carboxyl, sulfonic group, hydroxyl, amidogenand the like. According to the preparation method, the hydrazine and carbon disulfide take a reaction under the alkaline condition to obtain 1-diazanyl-dithio formate; the 1-diazanyl-dithio formate takes a reaction with one-molecule or two-molecule halogenated carboxylate to obtain the hydrazine derivative; the hydrazine derivative is used as the sulphide ore modified surfactant. The hydrophilicity of the sulphide ore with the natural hydrophobicity can be enhanced; particularly, the hydrophilicity of non-molybdenum sulphide ore such as chalcopyrite, chalcocite, galena, blende, troilite and bismuth sulphide ore can be effectively enhanced.

Description

technical field [0001] The invention relates to a hydrazine derivative and a preparation method thereof, in particular to a hydrazine derivative containing a hydrazine group, a dithiocarboxylic acid group and a carboxyl group, and a hydrazine derivative used as a non-molybdenum sulfide ore surface modification surfactant The application belongs to the field of mineral processing technology. Background technique [0002] When separating molybdenum and non-molybdenum sulfide ores in industry, in order to increase the hydrophilicity of non-molybdenum sulfide ores, some organic or inorganic compounds are often added to modify the surface of non-molybdenum sulfide ores, and finally strengthen the hydrophilicity of such ores, thereby Expand the difference in hydrophilicity between the two, and finally realize the efficient separation of the two. In order to strengthen the separation of molybdenum sulfide and non-molybdenum sulfide ores, there are many related patent reports, such...

Claims

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Application Information

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IPC IPC(8): C07C337/02B03B1/04B03D1/012
CPCB03B1/04B03D1/012C07C337/02
Inventor 孙伟殷志刚胡岳华刘润清张谌虎管青军
Owner CENT SOUTH UNIV
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