CAJ | 학술논문

针对高硫矿石容易发生氧化自燃的危险，通常的灌浆、注砂、注惰气和喷洒阻化剂等技术还存在一些不足，提出一种以水泥灰为基料的三相泡沫来预防硫化矿石自燃的新技术。该技术是将水泥灰和水按一定的比例混合，同时加入一定比例的发泡剂和稳泡剂后，经物理机械方式发泡形成，集固、液、气三相材料的防灭火性能与一体。理论分析了水泥灰三相泡沫的形成与衰变机理，并通过正交试验，对三相泡沫的发泡倍数与半衰期进行研究，最后采用单因素实验，定量分析灰水质量比，发泡剂和稳泡剂浓度对三相泡沫稳定性能的影响，得到最佳泡沫配方。结果表明：当灰水质量比为1：5，发泡剂浓度为5g／L，稳泡剂浓度为8g／L时，制得的三相泡沫发泡倍数达到6倍，半衰期达到6h以上。
침대고류광석용역발생양화자연적위험，통상적관장、주사、주타기화분쇄조화제등기술환존재일사불족，제출일충이수니회위기료적삼상포말래예방류화광석자연적신기술。해기술시장수니회화수안일정적비례혼합，동시가입일정비례적발포제화은포제후，경물리궤계방식발포형성，집고、액、기삼상재료적방멸화성능여일체。이론분석료수니회삼상포말적형성여쇠변궤리，병통과정교시험，대삼상포말적발포배수여반쇠기진행연구，최후채용단인소실험，정량분석회수질량비，발포제화은포제농도대삼상포말은정성능적영향，득도최가포말배방。결과표명：당회수질량비위1：5，발포제농도위5g／L，은포제농도위8g／L시，제득적삼상포말발포배수체도6배，반쇠기체도6h이상。
Aiming at the high risk of sulfide ore being oxidation-prone and easy to occur spontaneous combustion, and the general preventing technologies such as grouting, sand pumping, inert gas pumping and spraying of inhibi-tor have some shortages, a new technology of three-phase foam with cement ash as base material was proposed to prevent the spontaneous combustion of sulfide ores.It is formed by physical mixture after mixing water and cement ash in a certain proportion and then adding the right amount of foaming agent and foam stabilizer in its slurry.It makes use of the all-around capability of solid, liquid and gas states to prevent spontaneous combustion of sulfide ores.Then the formation and decay mechanism of three-phase foam were theoretically analyzed, and through or-thogonal experiment, the foaming multiple and half-life of three-phase foam were studied.Finally, by using single-factor experiments, the influence of gray water quality ratio, concentration of foaming agent and foam stabilizer to the foam stability were quantitatively analyzed, and the optimum foam formulation was obtained.It showed that the foaming multiple reached 6 times, and half-life was above 6h,when the gray water quality ratio was 1:5, and the concentration of foaming agent and foam stabilizer was 5g/L and 8g/L respectively.