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Wear-resistant pouring material used for tertiary air pipe elbow of cement kiln

A pipe elbow and cement kiln technology, which is applied in the field of castables, can solve the problems of high water absorption, inability to meet the long-term use of tertiary air pipe elbows, poor erosion resistance, erosion resistance and thermal shock stability, etc., to achieve water absorption Low efficiency, good overall compactness, corrosion resistance and thermal shock resistance

Inactive Publication Date: 2012-12-19
JIANGSU HENGNAI FURNACE CHARGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the castables used in the tertiary duct elbows of cement kilns use high-alumina bauxite as the main raw material. The finished products of the castables have poor erosion resistance, erosion resistance and thermal shock stability, and high water absorption, which cannot meet the three-time requirements. Long-term use of easy-wear parts such as air duct elbows

Method used

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  • Wear-resistant pouring material used for tertiary air pipe elbow of cement kiln
  • Wear-resistant pouring material used for tertiary air pipe elbow of cement kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A wear-resistant castable for a cement kiln tertiary air duct elbow, the components of which are composed of:

[0028] Brown corundum with a particle size of 3-5mm 29%;

[0029] Brown corundum with a particle size of 1-3mm 12%;

[0030] Brown corundum with a particle size of 0.088-1mm 10%;

[0031] Andalusite with a particle size of 0.088-1mm 8%;

[0032] SiC 12% with a particle size of 1-3 mm;

[0033] SiC fine powder 4%;

[0034] Andalusite powder 2%;

[0035] White corundum powder 5%;

[0036] α-Al 2 o 3 Micropowder 9%;

[0037] SiO 2 Micropowder 3%;

[0038] Pure calcium aluminate cement 4%;

[0039] Heat resistant steel fibers 2%.

[0040] Al in the brown corundum 2 o 3 Content≥93%, Fe 2 o 3 ≤1.5%; Al in andalusite 2 o 3 Content ≥ 60%; SiC content ≥ 95% in SiC and SiC fine powder with a particle size of 1-3mm; Al in andalusite powder 2 o 3 Content ≥ 61%; Al in white corundum powder 2 o 3 Content ≥ 95%; α-Al 2 o 3 Al in micropowder 2 o 3 Co...

Embodiment 2

[0042] A wear-resistant castable for a cement kiln tertiary air duct elbow, the components of which are composed of:

[0043] Brown corundum with a particle size of 5-8mm 7%;

[0044] Brown corundum with a particle size of 3-5mm 25%;

[0045] Brown corundum with a particle size of 1-3mm 7%;

[0046] Brown corundum with a particle size of 0.088-1mm 16%;

[0047] SiC 14% with a particle size of 1-3mm;

[0048] SiC fine powder 7%;

[0049] White corundum powder 5%;

[0050]α-Al 2 o 3 Micropowder 7%;

[0051] SiO 2 Micropowder 5%;

[0052] Pure calcium aluminate cement 6%;

[0053] Heat-resistant steel fiber 1%;

[0054] The sum of the contents of the above components is 100%.

[0055] The above-mentioned wear-resistant castable for the tertiary air duct elbow of a cement kiln, in terms of mass ratio, its components also include polypropylene fiber and sodium tripolyphosphate. The specific content ratio is: the total content of the above components: polypropylene fiber...

Embodiment 3

[0058] A wear-resistant castable for a cement kiln tertiary air duct elbow, the components of which are composed of:

[0059] Brown corundum with a particle size of 3-5mm 25%;

[0060] Brown corundum with a particle size of 1-3mm 12%;

[0061] Brown corundum with a particle size of 0.088-1mm 10%;

[0062] Andalusite with a particle size of 0.088-1mm 8%;

[0063] SiC 12% with a particle size of 1-3mm;

[0064] SiC fine powder 4%;

[0065] Andalusite powder 2%;

[0066] White corundum powder 5%;

[0067] α-Al 2 o 3 Micropowder 9%;

[0068] SiO 2 Micropowder 3%;

[0069] Pure calcium aluminate cement 8%;

[0070] Heat-resistant steel fiber 2%;

[0071] The sum of the contents of the above components is 100%.

[0072] The above-mentioned wear-resistant castable for the tertiary air duct elbow of a cement kiln, in terms of mass ratio, its components also include polypropylene fiber and sodium tripolyphosphate. The specific content ratio is: the total content of the abo...

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Abstract

The invention relates to a pouring material, in particular to a wear-resistant pouring material used for a tertiary air pipe elbow of a cement kiln. The pouring material comprises the following components: brown fused alumina, andalusite, SiC, SiC fine powder, andalusite powder, white alundum powder, alpha-Al2O3 micro powder, SiO2 micro powder, pure calcium aluminate cement, heat resistant steel fibers, polypropylene fibers and sodium tripolyphosphate. The wear-resistant pouring material used for the tertiary air pipe elbow of the cement kiln has the advantages of high fracture resistance and compression strength, good abrasion resistance, erosion resistance and thermal shock stability, outstanding abrasion resistance, low water absorption rate and good flowability.

Description

technical field [0001] The invention relates to a casting material, in particular to a wear-resistant casting material for a cement kiln tertiary air duct elbow. Background technique [0002] At present, the castables used in the tertiary duct elbows of cement kilns use high-alumina bauxite as the main raw material. The finished products of the castables have poor erosion resistance, erosion resistance and thermal shock stability, and high water absorption, which cannot meet the three-time requirements. Long-term use of easy-wear parts such as air duct elbows. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a scour-resistant castable for the deficiencies in the scour resistance, erosion resistance and thermal shock resistance stability of the castable for the cement kiln tertiary air duct described in the background technology. Wear-resistant castables for cement kiln tertiary air pipe elbows with good corrosion...

Claims

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Application Information

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IPC IPC(8): C04B28/06
Inventor 韩亚伟
Owner JIANGSU HENGNAI FURNACE CHARGE GRP
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