Magnesium silicate fiber blanket and production method thereof

Abstract

The invention relates to a magnesium silicate fiber blanket belonging to the technical field of fire-proof heat preservation and insulation materials. The magnesium silicate fiber blanket is characterized by comprising the following materials with oxides in percentage by weight: 40%-85% of SiO2, 3%-40% of MgO, 2%-30% of CaO, and the balance of one or the any combination of B2O3, Al2O3, Fe2O3, Na2O and K2O, wherein the total amount of the SiO2, the MgO and the CaO is more than or equal to 85%. The magnesium silicate fiber blanket is processed through the procedures of material melt, centrifugal thread throwing or blowing fiber forming, cotton collection, pinprick, heat treatment, cutting, and the like. The magnesium silicate fiber blanket has functions of non-inflammation, heat insulation, sound absorption and fire prevention and is a fire-resistant heat-preserving heat-insulating fire-proof material which is widely suitable for various heat engineering equipment and pipelines.

Description

technical field [0001] The invention relates to a fire-proof and thermal insulation material, in particular to a magnesium silicate fiber blanket. The invention is widely applicable to fire-resistant, heat-preserving, heat-insulating and fireproofing materials of various thermal equipments and pipelines. Background technique [0002] Glass wool blanket is made of glass wool produced by flame method, centrifugal method, and high-pressure energy-carrying gas injection method. It has the characteristics of non-combustibility, heat resistance, frost resistance, corrosion resistance, and stable chemical properties. Glass wool blanket is an excellent heat preservation, heat insulation, cold insulation and sound absorption material. Product features: bulk density ≥ 24kg / m 3 , thermal conductivity ≤0.048 at an average temperature of 70±5°C, maximum operating temperature of 350°C; bulk density ≥40kg / m 3 , Thermal conductivity ≤0.043 when the average temperature is 70±5°C, and the ...

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Problems solved by technology

However, due to the limitation of natural mineral resources and environmental protection, the reserves of coke gems are constantly decreasing, and the quality is getting worse, especially the impurity content is getting higher and higher, Fe 2 o 3 The content reaches more than 3.0%. At the same time, due to the needs of environmental protection, the excessive mining of coke gemstones can no longer meet the needs of environmental protection. Moreover, the mining and processing of coke gemstones is limited to the original mining and calcination stage, without deep processing measures, management level, and technical level. Backward, the quality of the product is difficult to guarantee