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Kilneye prefabricated component for cement kiln

A technology of prefabricated parts and cement kilns, which is applied in the field of refractory materials, can solve the problems of low life of prefabricated parts, reduce quality problems, improve alkali erosion resistance and thermal shock resistance, and ensure construction quality.

Inactive Publication Date: 2015-08-12
ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a kiln mouth prefabricated part for a cement kiln, aiming to solve the problem of low service life of the existing prefabricated parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kiln mouth prefabricated part for a cement kiln, comprising 25 parts of 5-8mm mullite, 15 parts of 3-5mm mullite, 10 parts of 0-1mm mullite, and 10 parts of 1-3mm mullite according to the mass parts Zirconium corundum, 15 parts of 0-1mm zirconium corundum, 6 parts of zircon powder not larger than 320 mesh, 7 parts of tabular corundum powder not larger than 320 mesh, 4 parts of calcium aluminate cement, 3 parts of alumina powder, 4 parts of silicon Micro powder, 0.10 parts of water reducing agent, 0.02 parts of explosion-proof fiber. Al in the calcium aluminate cement 2 o 3 Mass percentage content ≥ 68%.

[0015] Various raw materials are prepared and mixed according to the proportion, and then 4% by mass of water is added to stir evenly, and then poured into a mould, and after demoulding, curing and drying are performed to obtain a kiln mouth prefabricated part for a cement kiln.

Embodiment 2

[0017] The difference from other embodiments is that: in terms of mass parts, it includes 15 parts of 5-8mm mullite, 20 parts of 3-5mm mullite, 10 parts of 0-1mm mullite, 15 parts of 1-3mm Zirconium corundum, 10 parts of 0-1mm zirconium corundum, 10 parts of zircon powder not larger than 320 mesh, 5 parts of tabular corundum powder not larger than 320 mesh, 7 parts of calcium aluminate cement, 4 parts of alumina powder, 4 parts of silicon Micro powder, 0.15 parts of water reducer, 0.01 part of explosion-proof fiber. ZrO in the zirconium corundum 2 The mass percentage is 20-30%. Described mullite is sintered mullite, and Al in mullite 2 o 3 Mass percentage content ≥ 68%.

[0018] Various raw materials are prepared and mixed in proportion, and then 5% by mass of water is added to stir evenly, and then poured into a mould, and after demoulding, curing and drying are performed to obtain a kiln mouth prefabricated part for a cement kiln.

Embodiment 3

[0020] The difference from other embodiments is: according to the mass parts, it includes 15 parts of mullite of 5-8mm, 15 parts of mullite of 3-5mm, 18 parts of mullite of 0-1mm, and 10 parts of mullite of 1-3mm Zirconium corundum, 10 parts of 0-1mm zirconium corundum, 7 parts of zircon powder not larger than 320 mesh, 10 parts of tabular corundum powder not larger than 320 mesh, 4 parts of calcium aluminate cement, 5 parts of alumina powder, 6 parts of silicon Micro powder, 0.12 parts of water reducing agent, 0.01 part of explosion-proof fiber.

[0021] Various raw materials are prepared and mixed according to the proportion, and then 4.3% by mass of water is added to stir evenly, and then poured into a mould, and after demoulding, curing and drying are performed to obtain a kiln mouth prefabricated part for a cement kiln.

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Abstract

The invention relates to the field of refractory material, especially relate to a kilneye prefabricated component for a cement kiln, and aims to solve the problem of short service life of the prefabricated component of the prior art. The kilneye prefabricated component includes, by weight, 15-25 parts of 5-8mm mullite, 15-20 parts of 3-5mm mullite, 10-20 parts of 0-1mm mullite, 10-15 parts of 1-3mm fused alumina zirconia, 10-15 parts of 0-1mm fused alumina zirconia, 6-10 parts of zirconite powder no more than 320 mesh, 5-10 parts of plate-shaped lapis amiridis not more than 320 mesh, 4-7 parts of calcium aluminate cement, 3-5 parts of alumina powder, 4-6 parts of silica powder, 0.10-0.15 part of a water reducing agent and 0.01-0.02 part of explosion-proof fibers. According to the kilneye prefabricated component for the cement kiln, fused alumina zirconia and mullite are used as the main materials for the kilneye prefabricated component, zirconia disperses to aggregate of the kilneye prefabricated component to enhance and toughen the aggregate and matrix in the kilneye materials, and the alkali erosion resistance and thermal shock resistance of the kilneye materials are improved.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a kiln mouth prefabricated part for a cement kiln. Background technique [0002] During the use of the refractory material of the cement kiln mouth, in addition to the high temperature above 1400 ℃, it also needs to withstand the mechanical stress, thermal stress and chemical Corrosion damage, the service conditions are very harsh, requiring kiln mouth refractory materials must have good thermal shock resistance, wear resistance and alkali resistance. The damage of the kiln mouth lining is mainly manifested as cracking, spalling and abrasion. The service life of the kiln mouth refractory castable has a crucial impact on the operation cycle of the entire cement production line. At present, most of the refractory materials for kiln mouth are prepared by on-site casting process. Riveting nails are welded on the steel shell, steel fiber reinforced refractory castable is added to ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 王立旺常正钦朱其良王琪李新明
Owner ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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