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Synthetic method of floating agent of organophosphorous compound and organophosphorous floating agent

A technology of organic compounds and flotation reagents, applied in organic chemistry, chemical instruments and methods, flotation, etc., can solve the problem of few researches on the molecular design of flotation reagents, and achieve short cycle, easy operation and simple synthesis method Effect

Inactive Publication Date: 2009-09-23
TSINGHUA UNIV
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  • Application Information

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Problems solved by technology

At present, there are few studies on molecular design of flotation agents at home and abroad.

Method used

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  • Synthetic method of floating agent of organophosphorous compound and organophosphorous floating agent
  • Synthetic method of floating agent of organophosphorous compound and organophosphorous floating agent
  • Synthetic method of floating agent of organophosphorous compound and organophosphorous floating agent

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Embodiment Construction

[0039] Aiming at the characteristics of low-grade polymetallic oxide ores, the invention provides a synthesis method of a flotation agent for organic phosphorus compounds and the organic phosphorus flotation agent. The flotation agent of the organophosphorus compound includes a series of organic compounds containing benzene rings and a series of organic compounds without benzene rings. The general formula of these compounds is:

[0040]

[0041] where hydrocarbon group R 1 , R 2 , R 3 can be designed as a series of groups.

[0042] The synthetic method of the flotation reagent of described organophosphorus compound comprises the steps:

[0043] 1) With phosphorus trichloride as phosphorus source, ethanol n-propylamine, p-hydroxybenzaldehyde

[0044] 2) Preparation of imine: Dissolve p-hydroxybenzaldehyde, benzaldehyde or n-butyraldehyde in ethanol, n-butanol, sec-butanol or isopropanol, slowly add excess n-propylamine, isopropylamine, tert-butylamine or n-propylamine O...

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Abstract

The invention discloses a synthetic method of a floating agent of organophosphorous compound and the organophosphorous floating agent, belonging to the technical field of mineral separation. The synthetic method comprises the steps of: taking phosphorus trichloride as a phosphorus source, dissolving parahydroxyben-zaldehyde in ethanol, slowly dropping excess propylamine, reacting at room temperature, then obtaining product imine, using the mixture of the phosphorus trichloride and petroleum ether to prepare phosphite ester in a mixing liquid of the ethanol and the petroleum ether, then using the phosphite ester, the imine and anhydrous ether to prepare the mixture of phosphoramidic acid, imine, small amount of phosphite ester and solvent ether, and then conducting distillation, column chromatography and separation to obtain the organophosphorous floating agent phosphoramidic acid, therefore the method obtains 20 types of phosphoramidic acid compounds, and from which, 2-3 efficient and novel organophosphorous floating agents can be selected for use. The invention has simple synthetic method, easy operation and short period, and the obtained organophosphorous floating agent is widely applied to mineral dressing due to special structure thereof.

Description

technical field [0001] The invention belongs to the technical field of mineral separation, in particular to a method for synthesizing an organophosphorus compound flotation agent aminophosphoric acid. Background technique [0002] Flotation is an important method in mineral separation, widely used in mining, medicine, environmental protection and other fields. It uses the difference of hydrophobicity and hydrophilicity on the surface of minerals and the difference of surface wettability between minerals, and adopts the method of artificially adding flotation agent to separate. It was invented by Broken Hill Billiton Company - BHP Billiton about 100 years ago. At present, flotation has become a main separation method used in mining and many other industrial sectors. [0003] Low-grade ore refers to the ore that is economically lost due to the low grade of the main component under the technical and economic conditions of mine design. Under the traditional dual-indicator sys...

Claims

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Application Information

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IPC IPC(8): B03D1/014C07F9/40
Inventor 成昌梅徐盛明李林艳兰石琨
Owner TSINGHUA UNIV
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