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Preparation method of calcium carbonate mineral inhibitor

An inhibitor, calcium carbonate technology, applied in solid separation, flotation, etc., can solve problems such as difficulties in flotation separation, achieve the effect of less consumption and improve comprehensive utilization

Active Publication Date: 2017-02-22
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of flotation purification of fluorite minerals, a large amount of acidic water glass is generally used as an inhibitor of quartz and calcium carbonate minerals, and sodium oleate or oleic acid is used as a collector of fluorite minerals for flotation recovery; but when fluorite minerals When there is a large amount of calcium carbonate minerals in the fluorite, because the buoyancy of fluorite and calcium carbonate minerals is relatively close, it becomes extremely difficult to use this method for flotation separation. How to separate fluorite and calcium carbonate minerals by flotation, ore dressing work The authors have done a lot of research and obtained a lot of research results, but there are few relevant reports on the real application to the industry to obtain better indicators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An example of the preparation method of calcium carbonate mineral inhibitor of the present invention, comprises the following steps:

[0020] (1) Add 30 g of nitroaniline to 120 ml of 10% sodium nitrate solution by volume, heat to dissolve it, then cool to 20° C., slowly add 25 ml of 15% sodium hydroxide solution at this temperature to obtain product 1;

[0021] (2) 30g of larch extract and 100ml of 30% sodium sulfide were formulated into a solution and cooled to 20°C, coupled with product 1 at pH 10.5 to obtain product 2, and coupled with product 2 and acid black at pH 10.5 The black powder easily soluble in water is the inhibitor.

Embodiment 2

[0023] Another example of the preparation method of calcium carbonate mineral inhibitor of the present invention, comprises the following steps:

[0024] (1) Add 35g of nitroaniline to 150ml of 10% sodium nitrate solution by volume, heat to dissolve it, then cool to 20°C, slowly add 30ml of 15% sodium hydroxide solution at this temperature to obtain product 1;

[0025] (2) 35g of larch extract and 120ml of 30% sodium sulfide were formulated into a solution and cooled to 20°C, coupled with product 1 at pH 11 to obtain product 2, and coupled with product 2 and acid black at pH 11 to be easily soluble in The black powder of water is the inhibitor.

Embodiment 3

[0027] This embodiment is an application example of the calcium carbonate mineral inhibitor in the flotation separation of fluorite minerals.

[0028] 1. Mineral raw materials:

[0029] The raw material is fluorite ore, which contains 45.28% fluorite, 23.11% calcium carbonate and 8.74% quartz. Phase analysis shows that fluorite mineral is the main useful mineral, and the impurity minerals are mainly calcium carbonate mineral, quartz and a small amount of aluminum-containing mineral.

[0030] 2. Chemical system and operating conditions: use sulfuric acid to adjust the pH of the pulp to 5.5-6, and carry out an enlarged test according to the inhibitor 1200g / t and sodium oleate 900g / t. The results show that the above chemical conditions can effectively combine fluorite and calcium carbonate. Mineral flotation separation, under the conditions of feed fluorite grade of 45.28%, calcium carbonate 23.11%, and quartz 8.74%, after one roughing, four times of sweeping and seven times of c...

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PUM

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Abstract

The invention relates to a preparation method of a calcium carbonate mineral inhibitor. The preparation method comprises the following steps of (1) adding 30 to 35 g of nitroaniline to a 120 to 150 ml of sodium nitrite solution of which the volume concentration is 10%, heating so as to dissolve, then cooling to 20 DEG C, and slowly adding 25 to 30 ml of 15% sodium hydroxide solution at the temperature, so that a product 1 is obtained; (2) preparing 30 to 35 g of larch extract and 100 to 120 ml of 30% sodium sulfide into a solution, cooling to 20 DEG C, coupling with the product 1 in the condition that a pH value is 10.5 to 11, so that a product 2 is obtained, and coupling the product 2 with acid black in the condition that a pH value is 10.5 to 11, so that black powder which is easy to dissolve in water is obtained as the inhibitor. The inhibitor has good inhibiting effects on calcium carbonate minerals, no inhibiting effects are generated on fluorite minerals, the chemical usage is less, and no toxicity or pollution is generated.

Description

[0001] 1. Technical field [0002] The invention relates to a preparation method of a calcium carbonate mineral inhibitor. The prepared inhibitor is suitable for the flotation process in which fluorite minerals contain a large amount of calcium carbonate minerals and need to obtain fluorite concentrate. [0003] 2. Background technology [0004] In the process of flotation purification of fluorite minerals, a large amount of acidic water glass is generally used as an inhibitor of quartz and calcium carbonate minerals, and sodium oleate or oleic acid is used as a collector of fluorite minerals for flotation recovery; but when fluorite minerals When there is a large amount of calcium carbonate minerals in the fluorite, because the buoyancy of fluorite and calcium carbonate minerals is relatively close, it becomes extremely difficult to use this method for flotation separation. How to separate fluorite and calcium carbonate minerals by flotation, ore dressing work The researchers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/04
CPCB03D1/018B03D2201/06B03D2203/04
Inventor 魏宗武阮孝辉林美群
Owner GUANGXI UNIV