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Method for preparing tundish seating brick ramming material by using waste magnesia slag wall

A slag retaining wall and ramming material technology, applied in the field of refractory materials, can solve the problems of unsecured safety factors, waste of refractory raw material resources, inconsistent resource conservation, etc., to prevent particle segregation, save refractory resources, The effect of reducing costs

Inactive Publication Date: 2017-10-13
湛江市红鹰铭德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the corundum ramming material can achieve the above effects, the cost is relatively high, and a large amount of one-time use wastes high-grade refractory raw material resources, which is also inconsistent with the current advocated resource conservation
If low-grade high-alumina raw materials are used, due to the large amount of impurities, the volume stability is poor under high temperature conditions, and the safety factor cannot be guaranteed.

Method used

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  • Method for preparing tundish seating brick ramming material by using waste magnesia slag wall
  • Method for preparing tundish seating brick ramming material by using waste magnesia slag wall
  • Method for preparing tundish seating brick ramming material by using waste magnesia slag wall

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Embodiment 1

[0032] A method for preparing tundish seat brick ramming material by using waste magnesia slag retaining wall:

[0033] Classify the recycled waste magnesia slag retaining wall: knock out the wall blocks with more severe slag penetration (that is, the metamorphic layer is thicker and located at the slag line). After the removal, the surface residues are manually removed: Use a hammer to remove the remaining surface residues and steel of the slag retaining wall by knocking. After the surface residue is manually removed, it is sent to the crusher receiving hopper. After the crusher, the particles are sieved into 5-3, 3-1, and 1-0mm particles according to the batching requirements of refractory materials. The wall blocks of metamorphic layer with severe slag penetration are ball milled into 200 mesh powder.

[0034] According to the following composition ratio: waste: 5-3mm 20%; 3-1mm 25%; 1-0mm 15%; 90 magnesia 200 mesh 22%; 1-0mm quartz sand 5%; clay 4.5%; six partial 0.5% ; Metam...

Embodiment 2

[0040] A method for preparing tundish seat brick ramming material using waste magnesia slag retaining wall:

[0041] Classify the recycled waste magnesia slag retaining wall: knock out the wall blocks with more severe slag penetration (that is, the metamorphic layer is thicker and located at the slag line). After the removal, the surface residues are manually removed: Use a hammer to remove the remaining surface residues and steel of the slag retaining wall by knocking. After the surface residue is manually removed, it is sent to the crusher receiving hopper. After passing through the crusher, the particles are sieved into 5-3, 3-1, and 1-0mm particles according to the batching requirements of refractory materials. The wall blocks of metamorphic layer with more severe slag penetration are ball milled into 200 mesh powder.

[0042] According to the following composition ratio: waste: 5-3mm 18%; 3-1mm 26%; 1-0mm 16%; 90 magnesia 200 mesh 22%; 1-0mm quartz sand 5%; clay 4.5%; six par...

Embodiment 3

[0048] A method for preparing tundish seat brick ramming material by using waste magnesia slag retaining wall:

[0049] Classify the recycled waste magnesia slag retaining wall: knock out the wall blocks with more severe slag penetration (that is, the metamorphic layer is thicker and located at the slag line). After the removal, the surface residues are manually removed: Use a hammer to remove the remaining surface residues and steel of the slag retaining wall by knocking. After the surface residue is manually removed, it is sent to the crusher receiving hopper. After passing through the crusher, the particles are sieved into 5-3, 3-1, and 1-0mm particles according to the batching requirements of refractory materials. The wall blocks of metamorphic layer with severe slag penetration are ball milled into 200 mesh powder.

[0050] According to the following composition ratio: waste: 5-3mm 19%; 3-1mm 24%; 1-0mm 17%; 90 magnesia 200 mesh 23%; 1-0mm quartz sand 4%; clay 4.5%; six parti...

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Abstract

The invention discloses a method for preparing tundish seating brick ramming material by using a waste magnesia slag wall. The method comprises the following steps: classifying and sorting the recycled waste magnesia slag wall, and manually removing surface residues; clearing away residues on waste refractory bricks, steel and a deteriorative layer through knocking via an iron hammer; after the surface residues are manually removed, conveying the waste magnesia slag wall into a receiving hopper of a crushing machine, and after the waste magnesia slag wall passes through the crushing machine, screening particles into particles with three particle sizes of 5 to 3 mm, 3 to 1 mm and 1 to 0 mm according to a blending demand of a refractory material, thus preparing the tundish seating brick ramming material. Fine powder adopt magnesite powder, clay is used as a sintering agent, and quartz is used as an expanding agent; the magnesite powder, the clay and the quartz are mixed with crude glycerine, thus preparing a half-wet material. Therefore, no agglomeration phenomenon is caused within a one-year storage time period.

Description

Technical field [0001] The invention belongs to the technical field of refractory materials, and specifically relates to a method for preparing tundish seat brick ramming materials by using waste magnesia slag retaining walls. Background technique [0002] The tundish is a refractory container used in the short-process steelmaking process. It receives the molten steel poured from the ladle, and then distributes it to the various molds through the tundish nozzle. Therefore, it is very important to ensure the stable operation of the nozzle. In recent years, due to the need for smelting clean steel, the residence time of molten steel in the tundish has been correspondingly extended, and new requirements have been placed on refractory materials for steelmaking. In order to increase the service life of the refractory material of the working layer, the tundish adopts replacement nozzles to increase the service life. A certain buffer material is used to fix the nozzle brick and the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 吴忠杨伟严培忠吕幽谷朱华玉黎明刘俊孙巍玮
Owner 湛江市红鹰铭德新材料科技有限公司
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