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Magnesite briquetting process suitable for fused magnesite smelting

A technology of magnesite and fused magnesia, applied in the direction of magnesia, etc., can solve the problem that magnesite powder cannot be produced with fused magnesite, and achieve strong bonding at room temperature, enhanced controllability, and easy filling Effect

Inactive Publication Date: 2014-12-10
NORTHEASTERN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to propose a kind of electric fused magnesite smelting magnesite pellets for the above-mentioned problem that the existing magnesite powder can not be used for the production of fused magnesite, so as to realize the rationality and efficiency of magnesite powder resources. Efficient use of

Method used

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  • Magnesite briquetting process suitable for fused magnesite smelting

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Embodiment 1

[0039] figure 1 It is the preparation method of magnesite pellets smelted by electro-fused magnesium in Example 1.

[0040] This embodiment discloses a magnesite pellet smelted by electro-fused magnesium. The magnesite pellet smelted by electro-fused magnesium is an ellipsoid, and the x, y, and z axes are 30 mm, 40 mm, and 50 mm respectively. Compared with the existing positive spherical shape, the electric fused magnesium smelting magnesite pellets of the present invention can reduce the fluidity of the pellets, enhance the controllability, and be easy to fill; can form a stable material layer above the molten pool and form Preheating belt; in the electrode lifting type, it will not hinder the electrode activity.

[0041]The electric fused magnesium smelting magnesite pellets include: magnesite powder, inorganic binder and polymer binder, wherein the inorganic binder accounts for 20% of the total mass, and the polymer binder accounts for 0.02% of the total mass. %, the rest...

Embodiment 2

[0050] This embodiment discloses a magnesite pellet smelted with electro-fused magnesium, the composition of which is the same as that of Example 1, the preparation method is basically the same as that of Example 1, and the difference is that the pelleting pressure of step (4) in this embodiment is 30MPa.

Embodiment 3

[0060] This embodiment discloses a magnesite pellet smelted by electro-fused magnesium. The magnesite pellet smelted by electro-fused magnesium is an ellipsoid, and the x, y, and z axes are respectively 15mm, 20mm, and 25mm. Compared with the existing positive spherical shape, the electric fused magnesium smelting magnesite pellets of the present invention can reduce the fluidity of the pellets, enhance the controllability, and be easy to fill; can form a stable material layer above the molten pool and form Preheating belt; in the electrode lifting type, it can avoid being hindered by the spherical material group to move the electrode.

[0061] The electric fused magnesium smelting magnesite pellets include: magnesite powder, lightly burned powder and carboxymethyl cellulose, and the lightly burned powder has a particle size of less than 0.35mm. The degree of substitution of carboxymethyl cellulose is greater than 0.6, the purity is greater than 55%, and the viscosity is great...

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Abstract

The invention provides a fused magnesite smelting magnesite briquette and a preparation method thereof. The fused magnesite smelting magnesite briquette is in an ellipsoid and comprises the following raw materials in percentage by mass: 5%-40% of an inorganic bonder, 0.001%-0.05% of a macromolecular bonder and the balance of magnesite powder. The invention also discloses a preparation method of the fused magnesite smelting magnesite briquette. The bonder selection, bonder consumption and briquetting pressure of the briquette are optimized; the bonder is efficient and harmless; the fused magnesite smelting magnesite briquette is prepared by the steps of mixing and kneading, compacting, and forming; the briquette is in the ellipsoidal shape; a complete briquette preparation process which is suitable for fused magnesite production and takes the magnesite powder as the raw material is formed.

Description

technical field [0001] The invention relates to an electric fused magnesium smelting technology, in particular to an electric fused magnesium smelting magnesite pellet and a preparation method thereof. Background technique [0002] China is one of the countries with relatively rich magnesite resources in the world, and the distribution is relatively concentrated. Among them, Liaoning Province has rich magnesite reserves, accounting for 85% of the national total, ranking first in the country. my country's magnesite industry has developed into a unique resource-based industry with an annual output of 15 million tons of magnesia and its products, ranking first in the world. [0003] Among the magnesite resources owned by my country, low-grade magnesite accounts for nearly half of the total reserves. Due to the lack of scientific basis and high randomness in mining, the phenomenon of mining the rich and abandoning the poor, and random mining and indiscriminate mining are very s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/06
Inventor 孙挺王林山韩丹崔俊峰王玉红么革崔薇薇何占高刘希洋崔毅崔军闫志刚
Owner NORTHEASTERN UNIV
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