Efficient refractory castable for medical waste incinerator and preparation and construction technology thereof

A technology for refractory castables and medical waste, applied in the field of refractory materials, can solve problems such as large temperature fluctuations and thermal shock of refractory lining materials, and achieve high thermal shock resistance, not easy to collapse, and high strength

Inactive Publication Date: 2016-05-11
SHANDONG YAOHUA REFRACTORY MATERIAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature in the furnace fluctuates greatly, and the furnace is shut down at least once a month. Frequent temperature fluctuations cause serious thermal shock to the refractory lining material

Method used

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  • Efficient refractory castable for medical waste incinerator and preparation and construction technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The present invention provides a high-efficiency refractory castable for medical waste incinerators. The components contained and the parts by mass are as follows:

[0045] 40 parts of A-85 high alumina bauxite clinker;

[0046] Brown corundum 10 parts;

[0047] Calcined alumina micropowder 2 parts;

[0048] CA-80 aluminate cement 3 parts;

[0049] 2 parts of micropowder additive A;

[0050] 0.4 parts of additive B;

[0051] Additive C5 parts.

[0052] The A-85 high-alumina bauxite clinker contains different particle sizes and the mass fractions of each particle size interval are as follows:

[0053] 0-1mm10 copies;

[0054] 1-3mm10 copies;

[0055] 3-8mm20 parts.

[0056] The particle size of the brown corundum in each component of the light wear-resistant and refractory synthetic aggregate particles is 150-320 mesh.

[0057] The micropowder additive A is fused zirconia micropowder, D501-5 micron; the additive B is sodium silicate, modulus M=3.2-3.3; the addit...

Embodiment 2

[0080] The present invention provides a high-efficiency refractory castable for medical waste incinerators. The components contained and the parts by mass are as follows:

[0081] 70 parts of A-85 high alumina bauxite clinker;

[0082] 20 parts of brown corundum;

[0083] 10 parts of calcined alumina micropowder;

[0084] CA-80 aluminate cement 10 parts;

[0085] 5 parts of silicon dioxide micropowder;

[0086] Micropowder additive A5 parts;

[0087] 0.6 parts of additive B;

[0088] Additive C8 parts.

[0089] The A-85 high-alumina bauxite clinker contains different particle sizes and the mass fractions of each particle size interval are as follows:

[0090] 0-1mm20 copies;

[0091] 1-3mm20 parts;

[0092] 3-8mm30 parts.

[0093] The particle size of the brown corundum in each component of the light wear-resistant and refractory synthetic aggregate particles is 150-320 mesh.

[0094] The micropowder additive A is fused zirconia micropowder, D501-5 micron; the additi...

Embodiment 3

[0106] The present invention provides a high-efficiency refractory castable for medical waste incinerators. The components contained and the parts by mass are as follows:

[0107] 35 parts of A-85 high alumina bauxite clinker;

[0108] 16 parts of brown corundum;

[0109] 8 parts of calcined alumina micropowder;

[0110] 7 parts of CA-80 aluminate cement;

[0111] 3 parts of silicon dioxide micropowder;

[0112] Micropowder additive A3 parts;

[0113] 0.55 parts of additive B;

[0114] Additive C7 parts.

[0115] The A-85 high-alumina bauxite clinker contains different particle sizes and the mass fractions of each particle size interval are as follows:

[0116] 0-1mm16 parts;

[0117] 1-3mm16 parts;

[0118] 3-8mm27 parts.

[0119] The particle size of the brown corundum in each component of the light wear-resistant and refractory synthetic aggregate particles is 150-320 mesh.

[0120] The micropowder additive A is fused zirconia micropowder, D501-5 micron; the addit...

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Abstract

The invention discloses an efficient refractory castable for a medical waste incinerator and a preparation and construction technology thereof, belongs to the field of refractory materials, and particularly relates to a preparation method of the efficient refractory castable for the medical waste incinerator. Compared with traditional lining material of an incinerator, the efficient refractory castable for the medical waste incinerator disclosed by the invention has the advantages of high-temperature resistance, high thermal shock resistance, high strength, high wear resistance and resistance against alkaline and acid erosion; and moreover, special-shape structures in two combustion chambers can meet the working condition requirements to finish complete decomposition of dioxin by the incinerator. The technical scheme of preparation comprises the following steps: mixing A-85 high-bauxite clinker with brown fused alumina, CA-80 aluminate cement, silicon dioxide micro-powder, calcined alumina micro-powder and additives A, B and C; and adding a little water and mixing to obtain the efficient refractory castable.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to a high-efficiency refractory castable for medical waste incinerators and its production and construction process. Background technique [0002] The existing technical conditions are first. In the medical waste incinerator, in order to completely decompose dioxins, the design temperature of the secondary combustion chamber reaches 1500 ° C, which exceeds the maximum operating temperature of the lining materials used in general waste incinerators. In order to enhance the combustion effect, it is urgent to use special-shaped parts made of refractory castables to stir the flue gas to promote combustion; the thickest part of the part is 300mm, the thinnest part is 30mm, and the largest size is 1200mm, which is easy to crack and collapse during use. The temperature in the furnace fluctuates greatly, and the furnace is shut down at least once a month. Frequent temperature...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B28/06C04B2111/00431C04B14/306C04B22/08C04B14/046C04B14/303C04B20/0076C04B20/008
Inventor 张国栋
Owner SHANDONG YAOHUA REFRACTORY MATERIAL SCI & TECH CO LTD
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