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Preparation method for mullite-roller bed bar waste-cordierite product for hot-blast stove ceramic burner

A technology for ceramic burners and mullite, which is applied in the field of preparation of mullite-roller bar waste-cordierite products for ceramic burners of hot blast stoves, can solve the problems of high production cost, consumption of andalusite resources and the like, and achieves manufacturing The method is simple, the raw material composition and matching are reasonable, and the high temperature volume stability is good.

Active Publication Date: 2015-05-20
ZHENGZHOU ANNEC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic ceramic burners use mullite-andalusite-cordierite products, which can meet the requirements for the use of ceramic burners in hot blast stoves, but this product consumes a large amount of valuable andalusite resources, and the production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Will Al 2 o 3 Mullite 40%, Al with a content greater than 70% and a particle size of 3-1mm 2 o 3 Put 20% of the roller bar waste with a content greater than 70% and a particle size of 1-0.088mm into the high-speed sand mixer for 5 minutes, then add 3% of the total water and 4% of the binder, and mix for 5 minutes Then add 15% cordierite, sintered α-Al 2 o 3 5%, Guangxi clay 15%, silica powder 5%, high-speed mixing for 30 minutes, using a high-tonnage brick press to press the mixed mud into a high-density semi-finished product, and put the semi-finished product in a dryer to dry at a temperature of 150 ℃, time 30 hours, put the dried biscuit into the electric furnace, heat and sinter, the sintering temperature is 1380 ℃, the holding time is 8 hours, after sintering, it is released from the furnace, and prepared as mullite-roller bar waste for hot blast stove ceramic burner - Products of cordierite quality.

Embodiment 2

[0023] Will Al 2 o 3 Mullite 45%, Al with a content greater than 70% and a particle size of 3-1mm 2 o 3 Put 15% of roller bar waste with a content greater than 70% and a particle size of 1-0.088mm into a high-speed sand mixer for 5 minutes of mixing, then add 3% of the total water and 4% of binder, and mix for 5 minutes Then add cordierite 12%, sintered α-Al 2 o 3 8%, Guangxi clay 15%, silica powder 5%, high-speed mixing for 30 minutes, using a high-tonnage brick press to press the mixed mud into a high-density semi-finished product, and put the semi-finished product in a dryer to dry at a temperature of 150 ℃, time 30 hours, put the dried biscuit into the electric furnace, heat and sinter, the sintering temperature is 1380 ℃, the holding time is 8 hours, after sintering, it is released from the furnace, and prepared as mullite-roller bar waste for hot blast stove ceramic burner - Products of cordierite quality.

Embodiment 3

[0025] Will Al 2 o 3 Mullite 45%, Al with a content greater than 70% and a particle size of 3-1mm 2 o 3 Put 20% of the roller bar waste with a content greater than 70% and a particle size of 1-0.088mm into the high-speed sand mixer for 5 minutes, then add 3% of the total water and 4% of the binder, and mix for 5 minutes Then add cordierite 12%, sintered α-Al 2 o 36%, Guangxi clay 12%, silica powder 5%, high-speed mixing for 30 minutes, using a high-tonnage brick press to press the mixed mud into a high-density semi-finished product, and put the semi-finished product in a dryer to dry at a temperature of 150 ℃, time 30 hours, put the dried green body into the electric furnace, heat and sinter, the sintering temperature is 1400 ℃, the holding time is 8 hours, after sintering, it is released from the furnace, and prepared as mullite-roller rod waste for hot blast stove ceramic burner - Products of cordierite quality.

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Abstract

The invention relates to a mullite-roller bed bar waste-cordierite product for a hot-blast stove ceramic burner, and a preparation method thereof. The product comprises mullite, roller bed wastes, cordierite, sintered alpha-Al2O3, Guangxi clay and silica micropowder. The preparation method for the mullite-roller bed bar waste-cordierite product comprises the steps: 1, mulling the raw materials; 2, pressing into a high-density semi-finished product; 3, placing the semi-finished product into a dryer for drying; and 4, sintering a biscuit dried in the step 3. By replacing andalusite raw materials with roller bed wastes, not only can wastes be reasonably utilized, but also the production cost of the product can be lowered, and the properties of the product are excellent.

Description

technical field [0001] The invention relates to a refractory material for a hot blast stove ceramic burner, in particular to a preparation method of a mullite-roller bar waste material-cordierite product for a hot blast stove ceramic burner. Background technique [0002] The use conditions of the ceramic burner of the hot blast stove are harsh, and the short life of the ceramic burner has become one of the weak links in the overall longevity of the hot blast stove. The ceramic burner of the hot blast stove is an intermittent heating device with large and frequent temperature fluctuations, so refractory materials are required to have high thermal shock resistance. At present, the blast furnace is developing towards large-scale development, the furnace capacity of the hot blast stove is also increased, and the ceramic burner is also increased accordingly, and the load on the refractory masonry is increased. Under the condition of long-term high temperature load, the refractory...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 李富朝张玉涛马恒涛
Owner ZHENGZHOU ANNEC IND
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