Ratio of starting raw material and fluorinating agent in the process of purifying silica-containing raw material

被引：6

作者：

Demyanova, L. P. ^{[1
]}

Zaeva, A. S. ^{[1
]}

机构：

[1] Russian Acad Sci, Far E Branch, Inst Geol & Nat Management, Blagoveshchensk 675000, Russia

来源：

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING | 2012年 / 46卷 / 04期

关键词：

Differential Scanning Calorimetry Curve; Quartz Sand; Amorphous Silica; Ammonium Fluoride; CTHEORETICAL Foundation;

D O I：

10.1134/S0040579512040100

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The influence of NH4HF2 fluorinating agent on the yield of ammonium hexafluorosilicate intermediate product and amorphous silica in the fine purification of silica-containing raw material by the fluoride technology has been studied. Mixtures with different fluorinating agent contents were investigated by synchronous thermal analysis. The determination of the phases of intermediate products at various ratios of starting silica-containing raw material and NH4HF2 was carried out by the X-ray phase analysis method. The optimal ratio of components for the preparation of ammonium hexafluorosilicate and amorphous silica with maximal yield and purity level of the final products was determined.

引用

页码：368 / 372

页数：5

共 9 条

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