Inorganic fiber insulation material production process

Abstract

The invention belongs to the technical field of inorganic fiber heat preservation materials, and provides a production process of an inorganic fiber heat preservation material. The production process includes the steps that red mud and / or metal magnesium dross, dolomite powder and silicon powder are mixed into a mixture with the acidity coefficient MK ranging from 1.6 to 2.2 according to the standard that the red mud and / or metal magnesium dross account / accounts for 60%-75% of the total mass, the mixture is added with an adhesive and conveyed to a forming machine to be pressed into a blocky formed product, smelting furnace melting, high-pressure centrifugal blowing-drawing fiber formation, fiber catcher wool collection, pendulum wool distribution, crumpling machine crumpling and baking sheet machine heating forming are carried out, and thus the inorganic fiber heat preservation material with heat preservation, heat insulation, waterproofing and sound insulation properties is produced. In this way, the technical problems that in the prior art, red mud and metal magnesium dross are difficult to recycle, the utilization rate of the waste of red mud and metal magnesium dross is low, and an inorganic fiber heat preservation material is large in density, poor in heat preservation and heat insulation effect, high in production cost, low in resource integration efficiency and unreasonable are solved.

Description

Technical field [0001] The invention belongs to the technical field of inorganic fiber insulation materials, and relates to a production process for producing inorganic fiber insulation materials by using red mud. Background technique [0002] Red mud is the polluting waste discharged from the extraction of alumina in the aluminum industry. Generally, for every 1 ton of alumina produced, 1.0 to 2.0 tons of red mud are incidentally produced. As the world’s fourth largest alumina producer, China emits red mud every year. Up to tens of millions of tons. A large amount of red mud cannot be fully and effectively used. It can only be stacked on a large area of ​​storage yard, which takes up a lot of land and causes serious pollution to the environment. The production of a large amount of red mud has had direct and indirect effects on human production and life in many aspects. [0003] Many of the industrial wastes discharged during the production of metallic magnesium are discarded as ...

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Problems solved by technology

[0006] The present invention proposes a production process of inorganic fiber thermal insulation material, which solves the difficulties in recycling red mud and metal magnesium waste residue in the prior art, the low utilization rate of red mud and metal magnesium waste residue, and the high density of inorganic thermal insulation material and the thermal insulation effect Poor, high production cost, low resource integration efficiency and unreasonable technical problems

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