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Novel coke oven high-strength floating particle heat-insulating brick, and preparation method thereof

A heat-insulating brick and floating bead technology, applied in the field of heat-insulating bricks, can solve the problems of low strength, fire resistance, thermal shock resistance, thermal shock resistance, poor technology, etc., and achieve low thermal conductivity and stable performance The effect of high strength and good application prospects

Inactive Publication Date: 2019-01-11
山东潍耐节能材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic coke ovens have low strength and poor technology, and there are defects such as poor fire resistance, thermal shock resistance and thermal shock resistance.

Method used

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  • Novel coke oven high-strength floating particle heat-insulating brick, and preparation method thereof
  • Novel coke oven high-strength floating particle heat-insulating brick, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A new type of coke oven high-strength floating bead heat insulation brick, prepared from the following raw materials by weight: white graphite 15%, alumina powder 10%, clay 5%, mullite powder 15%, zirconia powder 5%, floating beads 25%, wood chips 2%, binder 10%, water reducing agent 3% and water 10%.

[0031] Its preparation method comprises the following steps:

[0032] (1) Weigh white graphite, alumina powder, clay, mullite powder, zirconia powder, floating beads and wood chips in proportion, mix them evenly, add them to water, then add binder and water reducer, at 500r / min Stir at a rotating speed for 20 minutes to make the stirring evenly and form mud;

[0033] (2) The mud material is pressurized on both sides, and slowly pressurized to form it;

[0034] (3) Drying after molding, the drying is divided into two stages, the first stage is low-temperature drying, the drying temperature is 25°C, and the drying time is 28h; the second stage is high-temperature drying,...

Embodiment 2

[0038] A new type of coke oven high-strength floating bead heat insulation brick, prepared from the following raw materials by weight: white graphite 15%, alumina powder 6%, clay 5%, mullite powder 25%, zirconia powder 5%, floating beads 25%, wood chips 2%, binder 5%, water reducing agent 2% and water 10%.

[0039] Its preparation method comprises the following steps:

[0040] (1) Weigh white graphite, alumina powder, clay, mullite powder, zirconia powder, floating beads and wood chips in proportion, mix them evenly, add them to water, then add binder and water reducing agent, at 550r / min Stir at a rotating speed for 18 minutes to make the stirring evenly and form mud;

[0041] (2) The mud material is pressurized on both sides, and slowly pressurized to form it;

[0042] (3) Drying after molding, the drying is divided into two stages, the first stage is low-temperature drying, the drying temperature is 30 ° C, and the drying time is 22 hours; the second stage is high-tempera...

Embodiment 3

[0046] A new type of coke oven high-strength floating bead heat insulation brick, prepared from the following raw materials by weight: white graphite 15%, alumina powder 5%, clay 10%, mullite powder 10%, zirconia powder 5%, floating beads 35%, wood chips 4%, binder 5%, water reducing agent 1% and water 10%.

[0047] Its preparation method comprises the following steps:

[0048] (1) Weigh white graphite, alumina powder, clay, mullite powder, zirconia powder, floating beads and wood chips in proportion, mix them evenly, add them to water, then add binder and water reducer, at 600r / min Stir at a rotating speed for 15 minutes to make the stirring evenly and form mud;

[0049] (2) The mud material is pressurized on both sides, and slowly pressurized to form it;

[0050] (3) Drying after molding, the drying is divided into two stages, the first stage is low-temperature drying, the drying temperature is 35°C, and the drying time is 18 hours; the second stage is high-temperature dry...

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Abstract

The invention belongs to the technical field of thermal insulation brick, and especially relates to a novel coke oven high-strength floating particle heat-insulating brick, and a preparation method thereof. The novel coke oven high-strength floating particle heat-insulating brick is prepared from, by weight, 15 to 30% of white graphite, 5 to 15% of alumina powder, 10 to 20% of clay, 10 to 25% of mullite powder, 5 to 15% of zirconia powder, 30 to 40% of floating particle, 2 to 5% of wood chip, 5 to 10% of a binder, 1 to 5% of a water reducer, and 10 to 15% of water. The novel coke oven high-strength floating particle heat-insulating brick is high in mechanical strength, excellent in fire resistance, stable in performance, high in strength, excellent in heat impact resistance and heat shockresistance, and is low in production cost, and is capable of saving energy, insulating thermal; no cracking or breaking is caused; and the factory is the only one factory in the states with coke ovenindex strength as high as 10 to 30MPa.

Description

technical field [0001] The invention relates to the technical field of heat insulating bricks, in particular to a novel coke oven high-strength floating bead heat insulating brick and a preparation method thereof. Background technique [0002] The coke oven is used to make coal to produce coke. The heat storage loss of the coke oven masonry and the heat dissipation loss on the surface of the furnace body generally account for about 24-45% of the fuel consumption. Light heat insulation bricks are used as the material of the furnace body structure. Not only can it save energy and reduce consumption, reduce the weight of the furnace body, simplify the structure of the kiln, reduce the working environment temperature and improve the working conditions, but also because of the reduction of heat storage, the rapid heating and cooling of the kiln can be realized, and the production efficiency of the kiln is improved. [0003] Insulation brick is a refractory material with a certain...

Claims

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Application Information

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IPC IPC(8): C04B35/5835C04B35/622
CPCC04B35/583C04B35/62204C04B35/62209C04B2235/3217C04B2235/3244C04B2235/3463C04B2235/349C04B2235/606C04B2235/77C04B2235/96C04B2235/9607C04B2235/9615
Inventor 孙伟
Owner 山东潍耐节能材料有限公司
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