Microcrystalline heat insulation particles and continuous production apparatus thereof

Abstract

The invention provides a continuous production apparatus of a microcrystalline heat insulation particle. The apparatus comprises a raw material bin, a preheating furnace, a kiln, a cooler and a finished product bin which are sequentially connected, a raw material is preheated by the preheating furnace and then is conveyed into the kiln through a tubular chain lifter, the kiln comprises a furnace body, a feeding bin is arranged at the upper end of the furnace body, a discharging port is arranged at the lower end of the furnace body, the furnace body comprises an expansion section and a vitrification section, a discharging device is arranged in the expansion section of the furnace body, the discharging device comprises at least one set of funnel and conical bucket, and the preheated sands are dispersed and gathered through the inner walls of the funnel and the cone; and the furnace body is symmetrically provided with a plurality of sets of burners. The perlite ore sands are dispersed andthen gathered in the furnace body, so the discharging time is delayed, and the expansion heat absorption time of the preheated sands is prolonged to ensure sufficient heat absorption and reach a expansion temperature; and the microcrystalline heat insulation particle wrapped with a smooth surface and having a cavity structure is produced through the apparatus, and the heat insulation particle hasthe advantages of no water absorption, high strength and excellent heat insulation performance.

Description

technical field [0001] The invention relates to the construction field, in particular to a microcrystalline thermal insulation granule and continuous production equipment thereof. Background technique [0002] At present, due to the demand for building energy saving and the emphasis on building fire protection, A-level fire wall insulation materials have attracted widespread attention. Vitrified microspheres and expanded perlite, which are widely used in the market, are popular in the market because of their light weight and certain thermal insulation properties. In the building materials industry, it is used as a lightweight aggregate and used as an insulation material, but there are many defects in the two materials. The expanded perlite has a large water absorption rate and a large thermal conductivity; while the expanded particles of vitrified microbeads are small and low in strength; and this product defect The reason is its existing production equipment and production ...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the demand for building energy saving and the emphasis on building fire protection, A-level fire wall insulation materials have attracted widespread attention. Vitrified microspheres and expanded perlite, which are widely used in the market, are popular in the market because of their light weight and certain thermal insulation properties. In the building materials industry, it is used as a lightweight aggregate and used as an insulation material, but there are many defects in the two materials. The expanded perlite has a large water absorption rate and a large thermal conductivity; while the expanded particles of vitrified microbeads are small and low in strength; and this product defect The reason is that its existing production equipment and production process

In the existing puffing furnace, the temperature gradually rises from top to bottom. Because the puffing equipment has a short puffing temperature zone and cannot realize automatic control of different temperature zones, expanded perlite only puffs without vitrification, resulting in increased thermal conductivity and high water absorption. After absorbing water, it is easy to increase the weight of the insulation board and increase the risk of external wall falling off; while the vitrified microbeads have been vitrified but not completely vitrified, resulting in low particle strength and increased thermal conductivity of small particles

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