Inhibiting agent for separating copper-molybdenum mineral and preparation method and application thereof

An inhibitor and mineral technology, applied in the field of copper-molybdenum mineral separation inhibitor, can solve the problems of high production and processing cost, economic burden, waste of resources, etc., and achieve the improvement of molybdenum concentrate grade, less chemical dosage, and copper mineral content. reduced effect

Inactive Publication Date: 2011-02-16
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, in the separation process of copper and molybdenum minerals, a large amount of sodium sulfide has been used as an inhibitor of copper minerals to separate copper and molybdenum minerals to obtain molybdenum concentrates and copper concentrates. Stable, cannot guarantee that the copper grade in the molybdenum concentrate is below 5%, which not only increases the cost of molybdenum smelting, but also causes copper to be lost in the molybdenum concentrate, resulting in waste of resources and unnecessary economic burdens on enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An example of the preparation method of copper sulfide mineral inhibitor of the present invention, comprises the following steps:

[0014] Mix glycine or alanine, ethyl isothiocyanate, triethylamine, water and acetone in a molar ratio of 1:1:3:4:3, heat and react at 60°C for 2 hours, then evaporate under reduced pressure 60% of triethylamine and acetone were extracted, cooled at room temperature, 10ml of saturated monochloroacetic acid solution was added to the residue, stirred for 1.5h, cooled and crystallized to obtain a white solid which was the copper mineral inhibitor.

Embodiment 2

[0016] Another example of the preparation method of the copper mineral inhibitor of the present invention comprises the following steps:

[0017] Mix glycine or alanine, ethyl isothiocyanate, triethylamine, water and acetone in a molar ratio of 2:2:4:6:5, heat and react at 80°C for 3 hours, then evaporate under reduced pressure 80% of triethylamine and acetone were extracted, cooled at room temperature, 15 ml of saturated monochloroacetic acid solution was added to the residue, stirred for 2 hours, cooled and crystallized to obtain a white solid which was the copper mineral inhibitor.

Embodiment 3

[0019] This embodiment is an application example of the copper-molybdenum inhibitor in separating copper-molybdenum minerals in copper-molybdenum mixed flotation concentrate.

[0020] 1. Mineral raw materials:

[0021] The raw material is copper-molybdenum mixed flotation concentrate, which contains 1.52% molybdenum and 20.25% copper. Phase analysis shows that molybdenum minerals mainly exist in the form of molybdenite; copper minerals are mainly bornite, followed by chalcogenite. Exist in the form of copper ore.

[0022] 2. Chemical system and operating conditions: adjust the pH of the ore slurry to 9-10 with sodium hydroxide, adopt the inhibitor for separating copper-molybdenum minerals prepared in Example 1 or Example 2, and carry out one year according to the chemical dosage of 300g / t 100t / d industrial expansion test, the results show that copper and molybdenum minerals can be effectively separated by using the above chemical conditions, and copper concentrate and molybde...

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PUM

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Abstract

The invention discloses an inhibiting agent for separating a copper-molybdenum mineral and a preparation method thereof. The preparation method comprises the following steps of: taking aminoacetic acid or alanine, ethyl isothiocyanate, triethylamine, water and acetone according to a molar ratio of 1-2:1-2:3-4:4-6:3-5, and mixing the aminoacetic acid or alanine, the ethyl isothiocyanate, the triethylamine, the water and the acetone, heating the mixture at the temperature of between 60 and 80 DEG C to perform reaction for 2 to 3 hours; reducing the temperature to distill off 60 to 80 percent of the triethylamine and the acetone; cooling the mixture at the normal temperature; adding 10 to 15 ml of saturated monochloroacetic acid solution into the remainder to react for 1.5 to 2 hours with stirring; and cooling to crystallize the mixture to obtain a white solid namely the inhibiting agent of a copper mineral. The inhibiting agent has high inhibiting effect on the copper mineral in a copper-molybdenum collective concentrate to reduce the content of the copper mineral in a molybdenum concentrate and improve the grade of the molybdenum concentrate. The inhibiting agent has a small used amount, and is nontoxic and pollution-free.

Description

1. Technical field [0001] The invention relates to a copper-molybdenum mineral separation inhibitor, in particular to an inhibitor for copper-molybdenum mineral separation to obtain copper concentrate and molybdenum concentrate after copper-molybdenum sulfide mixed flotation. 2. Background technology [0002] Copper-molybdenum sulfide associated ore is generally obtained by copper-molybdenum mixed concentrate after copper-molybdenum mixed flotation, and copper-molybdenum minerals are separated by copper-inhibiting floating molybdenum to obtain copper concentrate and molybdenum concentrate. For a long time, in the separation process of copper and molybdenum minerals, a large amount of sodium sulfide has been used as an inhibitor of copper minerals to separate copper and molybdenum minerals to obtain molybdenum concentrate and copper concentrate, which not only has high production and processing costs, but also has low indicators. Stable, cannot guarantee that the copper grade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D101/06B03D1/012B03B1/04B03D103/02
Inventor 魏宗武陈建华穆枭陈晔兰丽红
Owner GUANGXI UNIV
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