Thermal-insulating block and manufacturing process thereof

A thermal insulation block and manufacturing process technology, which is applied in the field of thermal insulation blocks, can solve the problems of high production costs, achieve low investment and processing costs, low thermal conductivity, and realize the effects of comprehensive utilization of resources

Active Publication Date: 2010-09-22
FUJIAN LONGKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this production process, cement and lime are high-quality raw materials for building materials, and the relative production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A power plant has built a dry desulfurization process, with an annual output of 20,000 tons of desulfurization by-products. The circulating fluidized bed dry desulfurization ash is mixed in a sealed container according to the weight ratio of 50% of dry desulfurization ash, 45% of fine powder slag and 5% of cement. Mix well, then add water and stir. Blocks are prepared using traditional unburned brick equipment. Reuse the waste heat steam of the power plant, control the autoclave temperature at 150°C in the autoclave, and steam for 6 hours under the pressure of 0.4MPa. After the temperature cools down, the finished product is taken out of the kettle, and all parameters meet the standard requirements of the national building materials aerated concrete block. Among them, the compressive strength of a single block is above 5MPa, and the density meets the requirements of autoclaved aerated concrete B07 (maximum density 0.725 tons / cubic meter). The annual output of autoclav...

Embodiment 2

[0031] A steel plant has built a sintering machine dry desulfurization system with an annual output of 15,000 tons of desulfurization by-products. Using circulating fluidized bed dry desulfurization ash, mix 70% dry desulfurization ash and 30% fly ash in a sealed container evenly, then add water and stir. Blocks are prepared using traditional unburned brick equipment. Reuse the waste heat steam of the power plant, control the autoclave temperature at 180°C in the autoclave, and steam for 10 hours under the pressure of 0.3MPa. After the temperature cools down, the finished product is taken out of the kettle, and all parameters meet the standard requirements of the national building materials aerated concrete block. Among them, the compressive strength of a single block is above 5MPa, and the density meets the requirements of autoclaved aerated concrete B07 (maximum density 0.725 tons / cubic meter). The annual output of autoclaved blocks is about 15 million standard bricks, and...

Embodiment 3

[0033] A thermal power plant has an annual output of 5,000 tons of desulfurization by-products. Using circulating fluidized bed dry desulfurization ash, mix 60% by weight of dry desulfurization ash, 30% fly ash and 10% polyacrylic superabsorbent resin in a sealed container, then add water and stir. Blocks are prepared using traditional unburned brick equipment. Reuse the waste heat steam of the power plant, control the autoclave temperature at 120°C in the autoclave, and steam for 10 hours under the pressure of 0.6MPa. After the temperature cools down, the finished product is taken out of the kettle, and all parameters meet the standard requirements of the national building materials aerated concrete block. Among them, the compressive strength of a single block is above 5MPa, and the density meets the requirements of autoclaved aerated concrete B07 (maximum density 0.725 tons / cubic meter). The annual output of autoclaved blocks is about 10 million standard bricks, and the sa...

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Abstract

The invention discloses a thermal-insulating block which uses dry-method desulphurized ash as a main raw material and also comprises 30 to 50 percent of micropowder slag waste material or fly ash in weight percentage content. In the invention, the dry-method desulphurized ash and the slag or the fly ash are utilized as the main raw materials of the thermal-insulating block, the characteristic of smaller original relative humidity of the dry-method desulphurized ash is fully utilized, and a light thermal-insulating block with certain and suitable dry volume density is obtained by controllingproper temperature and through autoclaved curing. In the invention, an aggregate is synthesized by utilizing the dry-method desulphurized ash and the micropowder slag or the fly ash as the raw materials, and other aggregates do not need to be added, thereby the abrasion of production equipment is reduced, the processing process is simplified, the comprehensive utilization of the dry-method desulphurized ash solid waste is finally realized, and meanwhile, the energy saving and the thermal insulation of a product are realized by utilizing the characteristics of low thermal conduction coefficient and good thermal-insulating effect of the dry-method desulphurized ash material per se.

Description

technical field [0001] The invention relates to a building material, especially a thermal insulation block, and a manufacturing process of the block. Background technique [0002] The combustion process of coal-fired power plants, boilers in heating power plants, and sintering machines in iron and steel plants will produce a large amount of sulfur dioxide pollutants. At present, the popular method for treating sulfur dioxide pollutants is the dry desulfurization method. Mainly due to the water-saving and energy-saving characteristics of the dry desulfurization process, this desulfurization process is welcomed by more and more users. The dry desulfurization method realizes desulfurization by spraying dry powder of slaked lime and reaction additives into the flue gas containing dust and sulfur dioxide. Sulfur dioxide and slaked lime react fully with the aid of reaction additives to form solid calcium sulfate (CaSO4), which is attached to the dust or condensed into fine partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B26/02C04B18/08B28B11/24
CPCY02W30/91
Inventor 蒋亚兵张原林驰前王建春
Owner FUJIAN LONGKING
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