Baking-free lightweight insulating brick and preparation method thereof

Abstract

The invention discloses a baking-free lightweight insulating brick and a preparation method thereof. The insulating brick comprises the following components in percentage by mass: 30-70% of mineral wool wastes, 10-35% of cement, 0-22% of fly ash and 5-10% of water. The preparation method comprises the following steps: burdening, namely preparing the mineral wool wastes, cement, fly ash and water according to a ratio; stirring, adding the mineral wool wastes, cement, fly ash, adding water according to a ratio for stirring 10-20 minutes so as to obtain a mixture; making a blank, vibrating and forming the mixture so as to obtain a brick blank; and curing, namely curing the brick blank at a normal temperature, thereby obtaining the baking-free lightweight insulating brick. According to the preparation method disclosed by the invention, the mineral wool production wastes and short fibers can be made into the baking-free brick, and the baking-free brick is small in investment, simple in process, low in volume-weight, good in thermal insulation properties, high in sound absorption and low in production cost.

Description

technical field [0001] The invention relates to a building material and a preparation method thereof, in particular to a non-burning light-weight insulating brick prepared by using mineral wool slag balls and a preparation method thereof. Background technique [0002] Molten blast furnace slag is one of the main by-products of blast furnaces and a major component of steel mill waste. Usually, each ton of molten blast furnace slag contains (126~188)×10 4 The sensible heat of kJ is equivalent to the energy of 30-40kg heavy oil, and it has a relatively high temperature, about 1450-1600°C, which is a high-quality waste heat resource and has a high recycling value. Recovery of this part of sensible heat will reduce production costs for enterprises and create economic benefits. [0003] At present, most blast furnace slags at home and abroad are mainly water-quenched. Although a small amount of heat can be recovered in the form of waste water, most of the energy cannot be recove...

AI Technical Summary

Problems solved by technology

The above two unburned bricks have problems such as large volume and poor thermal insulation performance, and it is difficult to use them as the main masonry material in the main structure of the building, which obviously limits the application range of the product and has poor economic benefits.

[0005] In short, in the prior art, there are few related technologies for preparing non-fired lightweight insulation bricks from mineral wool fibers, and the insulation bricks in the prior art have problems such as large volume, poor insulation performance, and high production costs.

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