Method for fabricating door brick in coke furnace

A manufacturing method and technology of furnace door bricks, which are applied in the field of refractory materials, can solve problems such as damage to the furnace door, scattering of smoke, and short service life of the furnace door, so as to prolong the service life, prevent the scattering of smoke, and improve the quality of coke Effect

Inactive Publication Date: 2005-01-12
山东耐材集团中齐耐火有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the thickness of the brick is increased to more than 200mm, because the brick is too thick, the middle part of the brick is not easy to be dense, the strength is low, and the use effect is not good.
This kind of machine-pressed bricks has many brick joints in the furnace door due to the small bricks, and the furnace door is easily damaged from the brick joints, resulting in poor sealing of the furnace door, scattered smoke, polluting the environment, and the coke at the furnace door is easy to oxidize and burn. Reduced strength; at the same time, the service life of the furnace door is shorter, which increases the labor intensity and cost of workers

Method used

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Examples

Experimental program
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Embodiment Construction

[0012] The embodiment of the present invention will be described below by taking mullite-cordierite castable as an example. The following raw materials are used: mullite (natural or synthetic), cordierite, calcined Al 2 o 3 Micropowder (less than 5μm), silica micropowder, alumina cement, water reducer, the main raw material properties are as follows:

[0013] raw material

[0014] The water reducer can be inorganic (such as sodium tripolyphosphate) or organic (such as NNO).

[0015] Crushing the mullite to be less than 5mm, and a part of it is ball milled to a fine powder of less than 0.088mm;

[0016] Crush the cordierite to less than 5mm. The remaining raw materials are fine powder. Carry out batching according to following ratio:

[0017] Raw materials

[0018] Accurately weigh the materials in the above table according to the ratio, then put them into the mixer, add 10% water, stir for 5 minutes, put them into a 500mm×450mm×1200 model, and vibrate ...

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Abstract

The prodn. steps are: raw material with fixed size is matched according to fixed matching ratio and is weighed according to fixed matching ratio then is send into puddle mixer to be sturred 2-3 minutes by adding water, the mixed material is send into model with fixed size to be vibrated 2-3 minutes by vibrostand or vibrating stick to make injected material compacted; the material is natural maintained in proper time in the model, remaintained 3 days after form stripping, dried 7 days in drying room, then is used into kln to be fired 3 hours in temp. 1300 deg.C to produce the end product, thickness of the brick is more than 200 mm, evenly reach to 1200-1500 mm.

Description

technical field [0001] The invention relates to a refractory material, in particular to a method for manufacturing coke oven door bricks. Background technique [0002] Coke oven door bricks are generally made of clay, clay-cordierite, alumina-cordierite or mullite-cordierite, but they are all machine-pressed small bricks. The length and width of the bricks are determined by the furnace door. The size of the hole is determined, generally 500mm×450mm; and the thickness of the brick, due to the use of machine pressing, cannot be too thick, generally about 120mm. If the thickness of the brick is increased to more than 200 mm, the middle part of the brick is not easy to be compacted because the brick is too thick, the strength is low, and the use effect is not good. This kind of machine-pressed bricks has many brick joints in the furnace door due to the small bricks, and the furnace door is easily damaged from the brick joints, resulting in poor sealing of the furnace door, scat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/195C04B35/66
Inventor 解西军岳增文李振李有才王敬兰王允新吴吉玉
Owner 山东耐材集团中齐耐火有限公司
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