Ceramic thermal-insulating composite material as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of functional materials and in particular relates to a ceramic thermal-insulating composite material as well as a preparation method and application thereof. The material consists of the following raw materials in parts by weight: 15-40 parts of aluminium dihydrogen phosphate, 5-10 parts of zirconium oxide micro powder, 5-10 parts of magnesium oxide micro powder, 5-20 parts of aluminum oxide micro powder, 10-35 parts of ceramic porous beads, 5-20 parts of ceramic fiber powder, 5-10 parts of a rare-earth drier, 10-30 parts of far-infrared ceramic mud, 5-10 parts of bentonite, 10-20 parts of high-alumina, 5-10 parts of titanium oxide and 15-25 parts of deionized water. The ceramic thermal-insulating composite material provided by the invention isapplied to a high-temperature boiler lining, is capable of effectively preventing powdering of a boiler lining, and meanwhile has sealed protection on the boiler lining, and thus the service life of the boiler lining can be prolonged; the coating is prepared from the ceramic porous beads and micro foam materials, and together with an infrared emitting material, a coating layer has a thermal insulating effect, and heat loss can be reduced.

Description

Technical field [0001] The invention belongs to the technical field of functional materials, and specifically relates to a ceramic thermal insulation composite material and a preparation method and application thereof. Background technique [0002] The boiler insulation layer of PetroChina, Sinopec, and power plants for power generation and steam injection heating is composed of refractory insulation bricks, ceramic fiber cotton, and castables. The effect of high thermal insulation is limited. The surface temperature of the boiler is high, and the damp heat can cause serious loss. The thermal efficiency of the boiler is also reduced. Moreover, the dust of the thermal insulation fiber is washed out of the furnace by the flue and causes serious pollution to the environment. , The insulation layer has to be overhauled and replaced every year, which will create economy for the enterprise. [0003] Therefore, it is an urgent problem to provide an insulating composite material that can ...

AI Technical Summary

Problems solved by technology

The effect of high thermal insulation is limited, the surface temperature of the boiler is high, the damp heat can cause serious loss, the thermal efficiency of the boiler is also reduced, and the powdered dust of the thermal insulation fiber is washed out of the furnace by the flue under the washing of the high-temperature air flow, causing serious pollution to the environment , the insulation layer also needs to be repaired and replaced every year, causing economic problems for the enterprise.

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