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Baking-free fireproofing brick and preparation method thereof

A technology for refractory bricks and vanadium iron slag, which is applied in the field of unfired refractory bricks and its preparation, and can solve the problems of stacking and pollution of vanadium iron slag

Inactive Publication Date: 2013-04-03
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a new way of comprehensive utilization of vanadium-iron slag to solve the problem of stacking and pollution of vanadium-iron slag; at the same time, it provides a non-burning refractory brick and its preparation method to effectively utilize waste slag resources, save energy and protect the environment

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  • Baking-free fireproofing brick and preparation method thereof

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Embodiment Construction

[0013] Hereinafter, the present invention will be described in detail in combination with specific embodiments. Unless otherwise specified, the percentages mentioned in the present invention are all percentages by weight.

[0014] The main train of thought of the present invention is to utilize vanadium iron slag to match SiO 2 Micropowder is used as the binder of refractory bricks, adding phosphate to improve the mixing and dispersing performance of the material, and then through pressing molding and humidification curing, the binder in the brick adobe is hydrated as much as possible and the strength is generated, and then dried. Burning refractory bricks can achieve the purpose of sintering during use.

[0015] In terms of weight percentage, the unfired refractory brick according to the exemplary embodiment of the present invention includes 90-95% ferrovanadium slag, 5-10% SiO 2 Micropowder and additional phosphate, among which, ferrovanadium slag and SiO 2 The total mass...

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Abstract

The invention discloses a baking-free fireproofing brick. The baking-free fireproofing brick comprises the following components in percentage by weight: 90-95% of vanadium iron slag, 5-10% of SiO2 micropowder and the balance of of phosphate, wherein the total mass of the vanadium iron slag and SiO2 are 100 parts; and the mass of phosphate is 0-14% of the total mass of the SiO2 micropowder. The invention also discloses a method of preparing the baking-free fireproofing brick. The method comprises the following steps of: A, preparing the vanadium iron slag, the SiO2 micropowder and the phosphate according to a predetermined proportion; B, adding water in the prepared materials and uniformly mixing, and performing compression moulding to obtain a brick blank; and C, after curing the brick blank at a temperature of 18-25 DEG C and a moisture condition of 85%-95%, and drying, thereby obtaining the baking-free fireproofing brick. The method provides a novel path of comprehensively using the vanadium iron slag, solves the problems of stacking and pollution of the vanadium iron, effectively uses waste slag resources, and is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to refractory materials in the field of metallurgy, and more specifically relates to an unfired refractory brick and a preparation method thereof. Background technique [0002] Ferrovanadium slag is the metallurgical waste slag produced when ferrovanadium is produced. It can be divided into aluminothermic method and silicothermal method. Among them, the aluminothermic method is the most common and the amount of slag produced is the largest. The Panzhihua area alone exceeds 50,000 tons. Its main components are Calcium aluminate phase, spinel phase, corundum are equal. The current treatment method is to sell part of the residual vanadium to the surrounding small factories to extract it, and part of it is returned to be used as a knotting material for the furnace lining. There are serious problems of vanadium-iron slag stacking and pollution, which is not conducive to environmental protection or resource reuse. [0003] In the prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 郝建璋张金阳路强刘珂含
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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