Magnesium aluminium vanadium refractor material

A magnesium-aluminum-vanadium refractory material and magnesia technology, which is applied in the field of refractory materials, can solve the problems of low melting point and achieve the effects of high melting point, good erosion and improved refractory performance

Inactive Publication Date: 2005-07-27
赵文厚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Vanadium slag is a kind of industrial waste, its AL 2 o 3 The content is very high, but because it contains a certain amount of vanadium oxide and other impurities, V 2 o 5 The melting point is very low at 645°C, so it has not been used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The vanadium slag and magnesia materials that meet the requirements are crushed and finely ground, and the particle size is 0.042-20mm, and then the crushed and finely ground vanadium slag and magnesia are subjected to magnetic separation treatment to remove the ferromagnetism. Material, then, screen out the vanadium slag and magnesia material with the required particle size, mix 200kg vanadium slag with 800kg magnesia, then add 50kg phosphate or magnesium chloride or water glass, stir and mix evenly, that is, become a loose magnesium aluminum vanadium Refractory material, the bulk magnesium aluminum vanadium refractory material can be rammed into furnace lining or pressed into various shapes of unfired products.

Embodiment 2

[0020] The vanadium slag and magnesia materials that meet the requirements are crushed and finely ground, and the particle size is 0.042-20mm, and then the crushed and finely ground vanadium slag and magnesia are subjected to magnetic separation treatment to remove the ferromagnetism. Then, screen out the vanadium slag and magnesia material with the required particle size, mix 400kg of vanadium slag with 600kg of magnesia, then add 30kg of boron dry or water glass, stir and mix evenly, and then it becomes a bulk magnesium aluminum vanadium refractory material , the bulk magnesium-aluminum-vanadium refractory material can be rammed into furnace lining or drum lining.

Embodiment 3

[0022] The vanadium slag and magnesia materials that meet the requirements are crushed and finely ground, and the particle size is 0.042-20mm, and then the crushed and finely ground vanadium slag and magnesia are subjected to magnetic separation treatment to remove the ferromagnetism. Material, then, screen out the vanadium slag and magnesia materials with required particle size, mix 550kg vanadium slag with 450kg magnesia, then add 50kg phosphate or boric acid or boric anhydride or water glass, stir and mix evenly, that is, become a bulk Magnesium-aluminum-vanadium refractory material, the bulk magnesium-aluminum-vanadium refractory material can be rammed into furnace lining or pressed into various shapes of unfired products.

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Abstract

A MgAlV refractory is prepared from V slag and Mg sand through respectively pulverizing and grinding, magnetic separation, sieving, proportionally mixing, adding adhesive and mineralizing agent, and stirring.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, in particular to a magnesium aluminum vanadium refractory material. Background technique [0002] Vanadium slag is a kind of industrial waste, its AL 2 o 3 The content is very high, but because it contains a certain amount of vanadium oxide and other impurities, V 2 o 5 The melting point is very low at 645°C, so it has not been utilized. We know that MgO has a very high melting point of 2800°C, which is an alkaline oxide; and V 2 o 5 for acidic oxides. Add magnesia to vanadium slag to form magnesium vanadate MgO·V 2 o 5 or MgO·V 2 o 3 , not only can fix vanadium oxide, but also can improve the refractory performance of vanadium slag. MgO in magnesia can also combine with a large amount of Al in vanadium slag 2 o 3 Formation of magnesium aluminum spinel MgO·AL with good refractory performance 2 o 3 . [0003] We know that at high temperature, high-valent oxides will gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/04C04B35/10C04B35/622C04B35/66
Inventor 赵文厚
Owner 赵文厚
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