Sintered heat-insulating brick and preparation method thereof

A technology for thermal insulation bricks and brick blanks, which is applied in the field of solid waste resource utilization, can solve the problems of large volume of sintered bricks and poor thermal insulation effect, and achieves the effects of high solid waste utilization rate, stable product quality and good durability.

Inactive Publication Date: 2019-04-23
梅州市梅县区金蔡建材厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, conventional sintered bricks have a large capacity and poor thermal insulation effect, and there is a big gap with the light, high-strength, durable, self-insulating, and componentized wall building materials advocated by the country.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The circulating fluidized bed ash is taken from the Meixian Power Plant in Meizhou, Guangdong. It is a brownish-red powdery solid with a small amount of moisture and has a calorific value of 330Kcal / kg; the slag comes from an enterprise in Meizhou Industrial Park with a calorific value of 820Kcal / kg; From Nankou Town, Mei County, Guangdong, massive solid, SiO 2 The content is 65.60%, Al 2 O 3 The content is 15.32%.

[0042] (1) Raw material pretreatment

[0043] Mix 95% circulating fluidized bed ash and 5% slag, add appropriate amount of water and stir evenly, and stack them in the stockyard for more than 30 days for aging.

[0044] The weathered stone is crushed by a crushing system consisting of a jaw crusher, an impact crusher and a 6mm rotary screen, and crushed into continuous graded fine aggregates less than 6mm.

[0045] (2) Mixture ingredients

[0046] The prepared materials are blended according to 80% aged circulating fluidized bed ash, 10% crushed weathered stone, and...

Embodiment 2

[0055] The production raw materials are the same as in Example 1. The proportion of the mixture is 70% aged circulating fluidized bed ash, 10% crushed weathered stone, and 20% wood chips. The other preparation processes are the same. The product is based on GB26538-2011. Sintered thermal insulation bricks and thermal insulation blocks are tested, and both meet the requirements of compound density grade 900 and strength grade MU10. The main test results are shown in Table 2:

[0056] Table 2 Performance test results of sintered insulation bricks

[0057] Specification (mm)

Embodiment 3

[0059] The production raw materials are the same as in Example 1. The proportion of the mixture is 50% aged circulating fluidized bed ash, 30% crushed weathered stone, and 20% wood chips. The other preparation processes are roughly the same. The difference is that: The extrusion pressure is 5.5 MPa. The products are tested according to GB26538-2011 "Sintered Thermal Insulation Bricks and Thermal Insulation Blocks", and all have a composite density grade of 900 and a strength grade of MU10. The main test results are shown in Table 3:

[0060] Table 3 Performance inspection results of sintered insulation bricks

[0061] Specification (mm)

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PUM

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Abstract

The invention discloses a sintered heat-insulating brick and a preparation method thereof. A green brick of the sintered heat-insulating brick comprises, by dry base weight, 50-90% of ash residue mixture, 10-30% of silica-alumina aggregate and 0-20% of hole forming material, the ash residue mixture comprises circulating fluidized bed ash residue and a heat correcting material, and doping amount ofthe heat correcting material is 0-20% of mass of the ash residue mixture. Doping amount of circulating fluidized bed ash in the sintered heat-insulating brick is 50-90%, other materials like furnaceslag, sawdust and rice hull ash used in a building block are industrial solid waste or byproducts, solid waste utilization rate is high, product quality is stable, each detection index of the sinteredheat-insulating brick produced by the method can reach national standard requirements, and the sintered heat-insulating brick has the advantages of high strength and high durability, meets environment-friendly, light-weight and energy-saving development direction of national wall materials and is an environment-friendly novel wall material.

Description

Technical field [0001] The invention belongs to the field of solid waste resource utilization, and in particular relates to a sintered thermal insulation brick and a preparation method thereof. Background technique [0002] Circulating fluidized bed combustion technology is a clean coal combustion technology developed in the past two decades. It has outstanding advantages such as good fuel adaptability, high combustion efficiency, low nitrogen oxide emissions, and low-cost limestone furnace desulfurization. It has been widely used in my country's thermal power generation industry. However, because the calcination temperature of the circulating fluidized bed boiler is usually 800 to 900 degrees, which is much lower than the 1200 degrees of the ordinary boiler, and the boiler is sprayed with limestone powder desulfurization process, the ash produced by the circulating fluidized bed boiler is different from the ordinary Fly ash has obvious differences in composition and structure. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/135C04B33/13C04B33/16C04B33/132C04B38/06C04B38/02
CPCC04B33/131C04B33/132C04B33/1355C04B33/16C04B38/02C04B38/0675C04B2235/95C04B2235/9607C04B2235/96C04B2235/77Y02P40/60
Inventor 黄赟邹挺方江宝鹏邹挺英
Owner 梅州市梅县区金蔡建材厂
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