Preparation method of calcium-magnesium-zirconium apatite compounded dissolvable fireproofing material

A calcium-magnesium-zirconium-apatite and refractory technology, applied in the field of refractory fibers, can solve the problems of low service temperature and easy embrittlement, and achieve the effects of delaying embrittlement, fewer structural defects and improving service life.

Active Publication Date: 2017-02-01
CHANGXING MENGYOU REFRACTORIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of low service temperature and easy embrittlement of the existing environmental protection refractory fiber, the present invention provides a preparation meth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 74.3 wt% of dolomite, 11.7 wt% of carbonapatite and 14.0 wt% of zircon as the main raw materials, and its chemical composition is CaO53.2 wt%, MgO29.6 wt%, ZrO 2 17.2 wt%, blended and crushed to 200 mesh; weigh 31.5 wt% xenotime, 35.1 wt% ilmenite, 19.2 wt% strontite and 14.2 wt% graphite powder as auxiliary raw materials, and its chemical composition is Y 2 o 3 20.6%, TiO 2 19.6 wt%, SrO 14.3 wt%%, FeO 17.6 wt%, P 2 o 5 12.9 wt%, carbon 15.1 wt%, blended and crushed to 200 mesh. Mix the main raw material and auxiliary raw material at a mass ratio of 100:5 and put them into a melting furnace and heat to 1900°C for initial melting. After stirring continuously for 1 hour, gradually raise the temperature to 2500°C, and stir at constant temperature until the main raw material and auxiliary raw material are completely melted to obtain melting Then filter the impurities in the molten liquid, and the filtrate enters the centrifugal head, and under the action of c...

Embodiment 2

[0036] Weigh 56.3 wt% of dolomite, 15.1 wt% of carbonapatite and 28.6 wt% of zircon as main raw materials, and its chemical composition is CaO44.7 wt%, MgO21.5 wt%, ZrO 2 33.8 wt%, blended and crushed to 200 mesh; weigh 35.8 wt% xenotime, 38.7 wt% ilmenite, 8.6 wt% strontite and 16.9 wt% graphite powder as auxiliary raw materials, and its chemical composition is Y 2 o 3 22.6 wt%, TiO 2 20.9 wt%, SrO 6.2 wt%%, FeO 18.8 wt%, P 2 o 5 14.2 wt%, carbon 17.3 wt%, blended and crushed to 200 mesh. Mix the main raw material and auxiliary raw material at a mass ratio of 100:8 and put them into a melting furnace and heat to 2000°C for initial melting. After continuous stirring for 2 hours, gradually raise the temperature to 2600°C, and stir at constant temperature until the main raw material and auxiliary raw material are completely melted to obtain melting Then filter the impurities in the molten liquid, and the filtrate enters the centrifugal head, and under the action of centr...

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Abstract

The invention discloses a preparation method of a calcium-magnesium-zirconium apatite compounded dissolvable fireproofing material. According to the preparation method, dolomite, podolite and zircon are taken as main raw materials, and xenotime, ilmenite, strontianite and graphite are taken as auxiliary materials. The preparation method comprises the following steps: (1) preparation of the main raw materials; (2) preparation of the auxiliary materials; (3) fusion; (4) filtration, and thread throwing; (5) formation of gray fabric; and (6) formation of a finished product. The density of the calcium-magnesium-zirconium apatite compounded dissolvable fireproofing material is 260Kg/m<2>-350Kg/m<2>, the tensile strength is 0.01MPa-0.08MPa, the use temperature is 1500-1800 DEG C, and the dissolution rate constant in a simulated human lung fluid is 1000ng/(cm<2>.hr)-1500ng/(cm<2>.hr); and the calcium-magnesium-zirconium apatite compounded dissolvable fireproofing material is low in preparation cost, nontoxic and harmless and beneficial to the environment-friendly production because no any polluted gas is released.

Description

technical field [0001] The invention belongs to the field of refractory fibers, and in particular relates to a preparation method of a calcium-magnesium-zirconium-apatite composite soluble refractory material. Background technique [0002] Compared with other refractory materials, refractory fiber has the advantages of small density (only 1 / 5-1 / 10 of refractory brick), small thermal conductivity (1 / 3 of light brick), small heat capacity and fast heating speed. It has been widely used in various industrial fields such as metallurgy, machinery, petroleum, chemical industry, electronics and light industry. In addition, it has also been applied in cutting-edge science and technology such as aerospace and atomic energy. The world's major developed countries are competing to develop the ceramic fiber industry. At present, the world's total annual output of ceramic fiber has exceeded 300,000 tons. The advantages of aluminum silicate series refractory fiber are high temperature an...

Claims

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Application Information

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IPC IPC(8): D04H1/46D04H1/4209D06C7/00C03C13/06C03B37/04
CPCC03B37/04C03C13/06D04H1/4209D04H1/46D06C7/00
Inventor 佘玉明
Owner CHANGXING MENGYOU REFRACTORIES
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