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Application of a High Efficiency Inhibitor 5′-atp-2na in Decalcification of Magnesite by Positive Flotation

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: 2021-11-16
NORTHEASTERN UNIV LIAONING
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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 a High Efficiency Inhibitor 5′-atp-2na in Decalcification of Magnesite by Positive Flotation

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The application of a highly effective inhibitor 5′-ATP-2Na in the positive flotation decalcification of magnesite, the schematic diagram of the process is shown in figure 1 , including the following steps:

[0043] Step 1: Grinding

[0044] The high-calcium and low-grade magnesite ore blocks are crushed by a roller crusher to a particle size of less than 2 mm, and ball milled by a ceramic ball mill to obtain magnesite ore powder; among them, for 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: Blending

[0046] Place the above-mentioned magnesite ore powder in the flotation cell of a single-cell flotation machine, add deionized water and a molar concentration of 0.015mol / L inhibitor 5'-ATP-2Na solution, and stir for 3 minutes to mix evenly, and carry out Slurry adjustment to obtain magnesite pulp; wherein, for magnesite pulp, the mass percent concentration of magnesite...

Embodiment 2

[0054] A kind of application of efficient inhibitor 5'-ATP-2Na in magnesite positive flotation decalcification, comprises the following steps:

[0055] Step 1: Grinding

[0056] The high-calcium and low-grade magnesite ore blocks are crushed by a roller crusher to a particle size of less than 2 mm, and ball milled by a ceramic ball mill to obtain magnesite ore powder; among them, for 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: Blending

[0058] Place the above-mentioned magnesite ore powder in the flotation cell of a single-cell flotation machine, add deionized water and a molar concentration of 0.02mol / L inhibitor 5'-ATP-2Na solution, and stir for 3 minutes to mix evenly, and carry out Slurry adjustment to obtain magnesite pulp; wherein, for magnesite pulp, the mass percent concentration of magnesite solids is 20%; the amount of added inhibitor 5'-ATP-2Na accounts for th...

Embodiment 3

[0065] A kind of application of efficient inhibitor 5'-ATP-2Na in magnesite positive flotation decalcification, comprises the following steps:

[0066] Step 1: Grinding

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

[0068] Step 2: Blending

[0069] Put the above-mentioned magnesite ore powder in the flotation cell of a single-cell flotation machine, add deionized water and a molar concentration of 0.018mol / L inhibitor 5'-ATP-2Na solution, and stir for 3 minutes to mix evenly, and carry out Slurry is adjusted to obtain magnesite pulp; wherein, for magnesite pulp, the mass percent concentration of magnesite solids is 20%; the amount of adding inhibitor 5 '-ATP-2Na accounts for ...

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Abstract

The application of a high-efficiency inhibitor 5'-ATP-2Na in magnesite positive flotation decalcification belongs to the field of magnesite flotation decalcification inhibitors. This application is to add highly effective inhibitor 5′‑ATP‑2Na (adenosine‑5′‑triphosphate disodium salt hydrate) in the preparation of magnesite slurry during the magnesite positive flotation decalcification process The amount of added efficient inhibitor 5′-ATP-2Na accounts for 0.8mmol / L~1.3mmol / L in molar concentration of magnesite pulp; the mass percentage concentration of magnesite in magnesite pulp is 15~30 %. The high-efficiency inhibitor 5′-ATP-2Na is used for the decalcification of magnesite by positive flotation. Under the sodium oleate or oleic acid flotation system, by adding the high-efficiency inhibitor 5′-ATP-2Na, the simultaneous expansion of magnesite The flotation difference of the calcium gangue mineral dolomite realizes the efficient separation of magnesite and dolomite, thereby reducing the magnesium impurities to improve the quality of magnesite concentrate products, and providing a new method for the flotation separation of high calcium and low grade magnesite flotation inhibitors.

Description

technical field [0001] The invention relates to the technical field of magnesite flotation decalcification inhibitors, in particular to the application of a high-efficiency inhibitor 5'-ATP-2Na in magnesite positive flotation decalcification. Background technique [0002] my country is relatively rich in magnesite resources, and the ore reserves are in the forefront of the world, but the reserves of high-quality magnesite resources are small, and low-grade magnesite is widely distributed. However, the complex mineral composition in low-grade magnesite ore makes it difficult to sort. 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 has gradually decreased, and the comprehensive development and utilization of low-grade magnesite resources has attracted widespread attention. Generally speaking, most of the middle and...

Claims

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Application Information

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Patent Type & Authority Patents(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 LIAONING
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