Composite phase-change catalyst for preparing quartz and use

A composite phase change and catalyst technology, applied in physical/chemical process catalysts, glass manufacturing equipment, manufacturing tools, etc., can solve problems affecting product performance, low conversion rate, accelerated quartz conversion, etc., to solve the contradiction between supply and demand, calcination temperature Low, high-conversion performance
CN100486698CInactive Publication Date: 2009-05-13CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2009-05-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to a phase change catalyst for calcining quartz prepares cristobalite and application. A composite phase changes catalyst of prepared cristobalite, which characteristic lie in that it is composed of KCl powder and MoO3 powder composition with mass ratio: 5-10:1-5. the application of the prepared cristobalite composite phase changes catalyst, its feature lie in: the composite quartz powder mixed composite phase change catalyst to get batch, the enter quality of composite phase changes catalyst is 6% - 15% of quartz powder quality; the batch heat on the speed of 2degree centigrade-10degree centigrade per minute to 1300degree centigrade and insulated for six hours, get products of the quartz phase more than 94%. The composite catalyst used for calcining quartz to prepare cristobalite, the transited temperature reduce (1300degree centigrade) from quartz to cristobalite, and its conversion rate is more than 94%, composite phase change catalyst used little.
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Description

technical field

[0001] The invention relates to a phase change catalyst for preparing cristobalite by calcining quartz and its application. Background technique

[0002] A flux generally refers to a substance that reduces the softening, melting or liquefaction temperature of its substance. According to chemical properties, it can be divided into: (1) basic fluxes with calcium oxide and magnesium oxide as the main components; (2) acidic fluxes with silica as the main components; (3) fluorite, oxide A neutral flux with aluminum as the main component.

[0003] Mineralizers are additives added to promote the solid-phase reaction effect of aluminosilicates. The mineralizer promotes the phase transition and lattice structure of the product, and its function is to form a solid sol with the reactant during calcination, activate the crystal lattice of the reactant, and facilitate the transformation of the product to a layered crystal form. It should be pointed out that a small amo...

Claims

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