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Method for refining magnesite

A magnesite and concentrate technology, applied in solid separation, flotation, etc., to achieve the effect of expanding the cut-off grade, facilitating comprehensive utilization, and improving separation performance

Inactive Publication Date: 2020-12-01
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for refining magnesite, which can effectively reduce the content of calcium in magnesite and solve the separation of calcium and magnesium in the magnesite flotation process. inefficiency problem

Method used

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  • Method for refining magnesite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1, refer to figure 1 , a method for refining magnesite, its steps are:

[0037] ①The raw ore is crushed and wet-milled to make pulp with a weight concentration of 30%;

[0038] 2. The ore pulp enters the mixing barrel, and the slurry is fully adjusted after adding the collector I, and then enters the flotation machine for flotation, and the foam product is tailings I;

[0039] 3. The pulp enters the mixing tank, add regulator I and regulator II to fully adjust the slurry, enter the next mixing tank, add collector III to fully adjust the slurry, and enter the flotation machine for flotation, and the product in the tank is tailings II;

[0040] ④The foam product enters the mixing tank, and adjuster II is added to fully adjust the slurry, and then enter the flotation machine for flotation, and the product in the tank is medium ore;

[0041] ⑤ Repeat step ④ for 5 times to obtain the intermediate ore and final foam product of each stage in turn, and the final foam ...

Embodiment 2

[0047] Example 2, refer to figure 1 , a method of refining magnesite experiment one:

[0048] A magnesite ore in Liaoning, the raw ore is composed of MgO content of 45.51%, CaO content of 1.28%, and silicate content of 1.90%. After crushing and grinding, it is made into pulp with a concentration of 30%. %, collector I consumption is that 0.6kg / T carries out slurry mixing, obtains tailings I after flotation;

[0049] The dosage of adjuster I is 2.0kg / T, the dosage of adjuster II is 10.0kg / T for sizing, and the dosage of collector III is 1.0kg / T for sizing, and the product in the tank is tailings II after flotation;

[0050] For foam selection, the dosage of Regulator II is 1.0kg / T to sizing the foam, and the product in the tank after flotation is medium ore I; for foam selection, the dosage of Regulator II is 1.0kg / T to sizing the foam, After flotation, the product in the tank is medium ore II, and the foam product is magnesite concentrate. The concentrate composition is 46.8...

Embodiment 3

[0056] Example 3, refer to figure 1 , a method for refining magnesite, its steps are:

[0057] ①The raw ore is crushed and wet-milled into pulp with a weight concentration of 30%.

[0058] ②The ore pulp enters the mixing barrel, and after adding the collector I, the slurry is fully adjusted, and then enters the flotation machine for flotation, and the foam product is tailings I,

[0059] ③The pulp enters the mixing tank, add the adjusting agent I to fully adjust the pulp, enter the next mixing tank, add the collector II to fully adjust the pulp, and enter the flotation machine for flotation. The foam product is tailings II,

[0060] ④The pulp enters the mixing tank, and adjuster II is added to fully adjust the pulp. Then it enters the next mixing tank and collector III is added to fully adjust the pulp, and then enters the flotation machine for flotation. The product in the tank is tailings III.

[0061] ⑤ The foam product enters the mixing tank, and adjuster II is added to ...

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Abstract

The invention relates to a method for refining magnesite, and belongs to the technical field of magnesite mineral processing. The method comprises the steps: firstly removing talc silicate minerals through reverse flotation; then removing most of calcium-containing carbonate gangue through reverse flotation; performing direct flotation to remove silicate minerals and calcium-containing carbonate minerals; and finally, obtaining magnesite concentrate through concentration. According to the method, a reverse-reverse-forward flotation method is adopted, and reagents in the flotation process are combined so that the floatability difference between the magnesite and gangue minerals is increased, and the problem of separation of calcium and magnesium in the magnesite refining process is solved.The low-carbon organic acid and the inorganic strong acid are combined, the sorting property of magnesium and calcium is effectively improved through directional complexing of organic acid radical ions, and mineral purification is achieved through the anion collecting agent. The method has the advantages that magnesite raw ore with poor quality can be used for obtaining high-quality concentrate products, the boundary grade of the selected raw ore is increased, and comprehensive utilization of mineral resources is facilitated.

Description

technical field [0001] The invention belongs to the technical field of magnesite mineral processing, in particular to a method for refining magnesite. Background technique [0002] As an important industrial raw material, magnesite is widely used in metallurgy, building materials, chemical industry, light industry, agriculture and animal husbandry and other fields, and it is still the main raw material for refining magnesium metal. Magnesite (MgCO 3 ) is a common carbonate mineral, the main gangue mineral is calcite (CaCO 3 ), dolomite (CaMg(CO 3 ) 2 ) and silicate minerals. Because carbonate minerals have similar crystal structures and similar cation radii, they can form a wide range of isomorphisms and similar physical properties. They are often closely symbiotic or mixed together, which makes it difficult to separate minerals. In the process of mineral separation, magnesite is purified by flotation process, and the main difficulty lies in the separation of magnesium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03D1/012B03D1/008B03D101/02B03D103/04
CPCB03D1/00B03D1/008B03D1/012B03D1/018B03D2201/02B03D2203/04
Inventor 朱孔金冯春晖李丰宋文义杨勇
Owner BLUESTAR LEHIGH ENG INST CO LTD
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