化学泡沫阻化剂对硫化矿石自燃阻化效果研究

Study on sulfide ore spontaneous combustion inhibition effect of chemical foam inhibitor

为防止硫化矿石自燃,提高现有阻化剂的功效,制备一种以硫酸铝、碳酸氢钠、三氯化铁和植物水解蛋白为原料的化学泡沫阻化剂。首先采用4因素3水平的正交试验制备阻化剂。然后通过特性试验测量该阻化剂在不同配比条件下发泡量、黏度、表面张力以及在恒温恒湿条件下15天氧化增重率,探究阻化剂在不同配比条件下的发泡能力、附壁性能、渗透性能和实际阻化性。最后结果表明:硫酸铝、碳酸氢钠、三氯化铁和植物水解蛋白的质量分数分别为8.6%、4.3%、0.35%和0.26%时发泡性能最优;质量分数分别为11.5%、11.5%、0.31%和0.08%时渗透性能最优;质量分数分别为8.0%、12.0%、0.16%和0.16%时附壁性能和阻化性最优。

In order to prevent sulfide ore spontaneous combustion and improve the effect of the existing inhibitor,a kind of chemical foam inhibitor was put forward,which uses aluminum sulfate,sodium bicarbonate,ferric chloride and plant protein hydrolysate as raw materials. By using the method of four factors and three levels orthogonal experiment,the inhibitor was prepared. By measuring the frothing volume,viscosity,surface tension and the oxidation weight gain rate in 15 days under the condition of constant temperature and humidity,the foaming ability,wall adhesion,permeability,and the actual effect of the inhibitor were explored. The results show that the mass fractions of the aluminum sulfate,sodium bicarbonate,ferric chloride and plant protein hydrolysate are 8.6%,4.3%,0.35% and 0.26% respectively when the foaming performance is the best,that the mass fractions are 11.5%,11.5%,0.31% and 0.08%respectively when the permeability is optimal,and that the mass fractions are 8.0%,12.0%,0.16% and0.16% respectively when the wall adhesion and inhibitor performance are optimal.