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Application of efficient inhibitor 5'-ATP-2Na in magnesite direct flotation decalcification

A technology of -atp-2na and magnesite, applied in flotation, solid separation, etc., can solve the problem of hindering the comprehensive utilization of low-grade magnesite, high calcium content of magnesite concentrate products, and magnesite flotation Calcium difficulty and other problems, to achieve good industrial feasibility, reduce calcium content, easy operation and operation

Active Publication Date: 2020-04-21
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reverse flotation desiliconization process has successfully realized the efficient desilication of magnesite, but there are still many difficulties in the flotation decalcification of magnesite
In high-calcium and low-grade magnesite ores, magnesite is often closely associated with a large amount of dolomite. During the flotation separation process, because magnesite and dolomite have similar crystal structures, they exhibit similar physical and chemical properties. , the fatty acid collectors used in industry can collect magnesite and dolomite very well, the similar flotation behavior of the two leads to low decalcification efficiency of magnesite, and the high calcium content of magnesite concentrate products seriously hinders the Comprehensive utilization of low-grade magnesite

Method used

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  • Application of efficient inhibitor 5'-ATP-2Na in magnesite direct flotation decalcification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The application of a high-efficiency inhibitor 5'-ATP-2Na in the decalcification of magnesite positive flotation, the process flow diagram is shown in figure 1 , Including the following steps:

[0043] Step 1: Grinding

[0044] The high-calcium and low-grade magnesite ore nuggets are crushed to a particle size of less than 2mm by a counter-roll crusher, and the ceramic ball mill is used for ball milling to obtain magnesite ore powder; Magnesite ore powder, the mass of magnesite particles smaller than 74μm accounts for 70% of the total mass of magnesite ore powder;

[0045] Step 2: Mix the pulp

[0046] Place the above-mentioned magnesite ore powder in the flotation tank of a single-tank flotation machine, add deionized water and the inhibitor 5'-ATP-2Na solution with a molar concentration of 0.015mol / L, and stir for 3min to mix evenly. The slurry is adjusted to obtain the magnesite slurry; among them, for the magnesite slurry, the mass percentage concentration of the magnesit...

Embodiment 2

[0054] The application of a high-efficiency inhibitor 5'-ATP-2Na in the decalcification of magnesite positive flotation includes the following steps:

[0055] Step 1: Grinding

[0056] The high-calcium and low-grade magnesite ore nuggets are crushed to a particle size of less than 2mm by a counter-roll crusher, and the ceramic ball mill is used for ball milling to obtain magnesite ore powder; Magnesite ore powder, the mass of magnesite particles smaller than 74μm accounts for 75% of the total mass of magnesite ore powder;

[0057] Step 2: Mix the pulp

[0058] Place the above-mentioned magnesite ore powder in the flotation tank of a single-tank flotation machine, add deionized water and the inhibitor 5'-ATP-2Na solution with a molar concentration of 0.02mol / L, and stir for 3 minutes to mix evenly. The slurry is adjusted to obtain magnesite slurry; among them, for magnesite slurry, the mass percentage concentration of magnesite solid is 20%; the amount of inhibitor 5'-ATP-2Na added ac...

Embodiment 3

[0065] The application of a high-efficiency inhibitor 5'-ATP-2Na in the decalcification of magnesite positive flotation includes the following steps:

[0066] Step 1: Grinding

[0067] The high-calcium and low-grade magnesite ore nuggets are crushed to a particle size of less than 2mm by a counter-roll crusher, and the ceramic ball mill is used for ball milling to obtain magnesite ore powder; Magnesite powder, the mass of magnesite particles smaller than 74μm accounts for 80% of the total mass of magnesite powder;

[0068] Step 2: Mix the pulp

[0069] Place the above-mentioned magnesite ore powder in the flotation tank of a single-tank flotation machine, add deionized water and the inhibitor 5'-ATP-2Na solution with a molar concentration of 0.018mol / L, and stir for 3min to mix evenly. The slurry is adjusted to obtain magnesite slurry; among them, for magnesite slurry, the mass percentage concentration of magnesite solid is 20%; the amount of inhibitor 5'-ATP-2Na added to the molar c...

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Abstract

The invention discloses an application of an efficient inhibitor 5'-ATP-2Na in magnesite direct flotation decalcification, and belongs to the field of magnesite flotation decalcification inhibitors. According to the application, in the magnesite direct flotation decalcification technological process, the efficient inhibitor 5'-ATP-2Na (disodium adenosine-5'-triphosphate hydrate) is added in magnesite ore pulp preparation, wherein the molar concentration of the added efficient inhibitor 5'-ATP-2Na in the magnesite ore pulp is 0.8 mmol / L-1.3mmol / L and the mass percentage concentration of magnesite in the magnesite pulp is 15-30%. The efficient inhibitor 5'-ATP-2Na is used for magnesite direct flotation decalcification, under a sodium oleate or oleic acid flotation system, by adding the efficient inhibitor 5'-ATP-2Na, the flotation difference between the magnesite and the calcium-containing gangue mineral dolomite is enlarged, efficient separation of the magnesite and the dolomite is achieved, and therefore magnesium impurities are reduced, the quality of magnesite concentrate products is improved, and a novel flotation inhibitor is provided for flotation separation of high-calcium low-grade magnesite.

Description

Technical field [0001] The invention relates to the technical field of decalcification inhibitors for magnesite flotation, in particular to the application of a high-efficiency inhibitor 5'-ATP-2Na in the decalcification of magnesite positive flotation. Background technique [0002] my country's magnesite resources are relatively rich, and the ore reserves are in the forefront of the world, but the high-quality magnesite resources are few, and the low-grade magnesite resources are widely distributed. However, the complex mineral composition of low-grade magnesite ore makes the classification difficult. The common associated gangue minerals of magnesite mainly include quartz and calcium carbonate minerals. In recent years, with the excessive development of high-quality magnesite resources, high-grade magnesite resources have gradually decreased, and the comprehensive development and utilization of low-grade magnesite resources has attracted widespread attention. Generally speaki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/012B03B9/00B03D101/06B03D103/04
CPCB03B9/00B03D1/00B03D1/012B03D2201/06B03D2203/04
Inventor 杨斌朱张磊孙浩然印万忠李闯姚金王东辉郝晓宇
Owner NORTHEASTERN UNIV
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