建平膨润土提纯及制备球团黏结剂实验研究
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摘要
以建平镁基膨润土为原矿,采用多级小锥角旋流器串联工艺进行提纯,并对提纯产品进行氧化球团造球实验。结果表明,当采用φ150 mm、φ75 mm、φ50 mm、φ25 mm、φ10 mm五级旋流器串联时,蒙脱石含量从62.32%富集到94.06%。选用φ50 mm-Y做黏结剂,配入量为1.5%时,球团落下强度为4.3次,爆裂温度为584℃,干球抗压强度为363 N,各项指标均达到市售钠化膨润土的性能。
The Mg-bentonite is used as raw material which is purified by multi-small taper angle hydroclone in series and the preparation of oxidized pellets using purified bentonite is carried out. The experiment results show that the content of montmorillonite is enriched from 62.32% to 94.06% when bentonite is separated by φ150 mm, φ75 mm, φ50 mm, φ25 mm, φ10 mm small taper angle hydroclone. Pellets with φ50 mm-Y dosage of 1.5%, the drop strength of green pellets is 4.3 times/0.5m, burst temperature is 584 ℃ and the compressive strength of dry pellets is 363 N/piece. All indexes reach the performance of artificial Na-bentonite.
The Mg-bentonite is used as raw material which is purified by multi-small taper angle hydroclone in series and the preparation of oxidized pellets using purified bentonite is carried out. The experiment results show that the content of montmorillonite is enriched from 62.32% to 94.06% when bentonite is separated by φ150 mm, φ75 mm, φ50 mm, φ25 mm, φ10 mm small taper angle hydroclone. Pellets with φ50 mm-Y dosage of 1.5%, the drop strength of green pellets is 4.3 times/0.5m, burst temperature is 584 ℃ and the compressive strength of dry pellets is 363 N/piece. All indexes reach the performance of artificial Na-bentonite.
引文
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[8]李彩霞,白阳,赵家林,等.某钙基膨润土半干法钠化制备球团黏结剂研究[J].非金属矿,2016,39(3):14-16.
[2]袁志武.球团矿与烧结矿经济效益对比分析[J].矿业工程,2006,4(3):39-40.
[3]张惠欣.甘肃金昌红泉镁基膨润土属型分类[J].西北地质,1985(4):5-13.
[4]张玉柱,边妙莲,刘鹏君,等.膨润土理化性能对球团性能影响的研究[J].烧结球团,2006,31(2):21-24.
[5]庞学诗.根据分级粒度计算水力旋流器直径的半经验算法[J].现代矿业,2010(7):46-47.
[6]傅菊英.含铁矿物成球性指数K的研究[J].烧结球团,1992(4):4-7.
[7]李彩霞,白阳,赵家林,等.朝阳膨润土制备冶金球团黏结剂试验研究[J].非金属矿,2016,39(5):17-18.
[8]李彩霞,白阳,赵家林,等.某钙基膨润土半干法钠化制备球团黏结剂研究[J].非金属矿,2016,39(3):14-16.