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本文主要测定了 6对矿物粉尘的电导率和pH值 ,对比分析了形态、粒度、温度、时间对粉尘电化学特性的影响。研究结果表明 ,矿物在水介质中的pH值 /电导率比值与其粒度细度成正相关关系 ,电导率对温度的变化较为敏感 ,其最大值出现在 60℃左右 ,在 80℃以后所有样品的电导率均出现大幅下降拐点。多数样品的pH值表现出逐渐上升的趋势 ,8小时以后所有样品均接近平衡时的稳定值 ,具阳离子交换性质的矿尘的溶解、电离、导电模式是一种新类型。矿物的溶解速率受粒度、表面活性、温度、浓度差、时间等因素影响。矿物粉尘的pH值 /电导率比值是矿物表面的特征值 ,全面反映其溶解度、化学活性、表面电性、降解和残留、防腐、配伍等方面的行为趋势。
In this paper, the conductivity and pH value of 6 pairs of mineral dusts were determined. The effects of morphology, particle size, temperature and time on the electrochemical properties of dust were analyzed. The results show that the pH value / conductivity ratio of mineral in aqueous medium is positively correlated with its particle size and fineness, conductivity is sensitive to temperature change, and its maximum appears at about 60 ℃. After 80 ℃, the conductivity of all samples The rate of sharp decline in the inflection point. The pH value of most samples showed a gradual upward trend. After 8 hours, all the samples were close to the equilibrium value at equilibrium. The dissolution, ionization and conduction modes of the cation-exchange mineral dust were a new type. The dissolution rate of minerals is affected by factors such as particle size, surface activity, temperature, concentration difference and time. The pH value / conductivity ratio of mineral dust is the characteristic value of the mineral surface, which fully reflects the behavioral trend of its solubility, chemical activity, surface electrical property, degradation and residue, corrosion resistance and compatibility.