石煤中钒的赋存状态分析方法及其化学解释

Analytical Method for Vanadium Occurrence State in Stone Coal and Corresponding Chemical Explanation

为全面了解石煤中钒的赋存状态,指导石煤提钒工业生产,提出了一种石煤中钒赋存状态的分析检测方法,并通过化学计算和实例分析验证此方法的合理性。其基本方法和流程是:采用分步化学提取的方法,分别添加不同的药剂分步提取石煤中的6种含钒物相,所提取的含钒溶液用分光光度法测其钒含量。化学计算和实例分析结果表明,此方法每步添加的药剂仅与目的矿物发生相互作用,所得结果准确、可靠。

In order to understand vanadium occurrence state in stone coal so as to provide the guidance for practical vanadium extraction from stone coal, a method is proposed to analyze vanadium occurrence state in stone coal, whose rationality was thereafter verified by chemical calculations and a practical application analysis. The basic approach and flowsheet are as follows： by using chemical extraction, different agents were added step by step to extract 6 kind of vanadium-bearing phase in the stone coal. Those extracted vanadium-bearing solution was then measured by spectrophotometry for the content of vanadium. Both chemical calculations and practical analysis result indicate that the agent added each step just reacted with the objective minerals, leading to accurate and reliable result.