霍尔辛赫选煤厂新增浮选系统改进设计
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摘要
为增加精煤产率,提高产品灵活性,介绍了霍尔辛赫选煤厂新增浮选系统的设备选型和工艺布置。针对调试过程中工艺和设备存在的问题,从浮选柱分选、浮选精煤脱水、供风系统3方面提出了改进措施,最后对浮选系统的应用效果进行分析。结果表明,通过增加浮选柱给料管;设置鸭嘴型喷嘴,增加浮选精矿桶;选用乳化柴油、丁辛醇作为浮选药剂;掺入螺旋精煤离心液,更换压滤机滤布;调整陶瓷板供气参数等措施对选煤厂浮选系统进行改进。改造后,选煤厂浮选精煤产率提高3%~6%,浮选尾煤灰分从30%提高至40%以上,浮选精煤脱水时间缩短40%,药剂消耗降低至1.9 kg/t,达到了预期的改造效果。
To increase clean coal yield,the flotation system of Huoerxinhe coal separation plant was improved. The equipment selection and the technical layout of the system was introduced. The problems during commissioning period were analyzed. The improvement actions of column separation,clean coal dewatering and air supply were proposed. The flotation efficiency was analyzed. The flotation system was transformed by adding duckbill jet,flotation clean coal vat and feed tube of flotation column,choosing emulsion diesel and butyl alcohol as flotation reagents,dosing slurry of corase- coal- slime centrifuge and the flotation clean coal,changing filter cloth,regulating parameters of ceramic plates. After renovation,the yield of clean coal increased by 3% to 6%,the ash content of the tailing increased from 30% up to40%,the dewatering time decreased by 40%,the consume of reagents decreased to 1. 9 kg / t. Therefore,the expected renovation effect was achieved.
To increase clean coal yield,the flotation system of Huoerxinhe coal separation plant was improved. The equipment selection and the technical layout of the system was introduced. The problems during commissioning period were analyzed. The improvement actions of column separation,clean coal dewatering and air supply were proposed. The flotation efficiency was analyzed. The flotation system was transformed by adding duckbill jet,flotation clean coal vat and feed tube of flotation column,choosing emulsion diesel and butyl alcohol as flotation reagents,dosing slurry of corase- coal- slime centrifuge and the flotation clean coal,changing filter cloth,regulating parameters of ceramic plates. After renovation,the yield of clean coal increased by 3% to 6%,the ash content of the tailing increased from 30% up to40%,the dewatering time decreased by 40%,the consume of reagents decreased to 1. 9 kg / t. Therefore,the expected renovation effect was achieved.
引文
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[2]漆天天.配加贫煤炼焦的生产实践[J].山西冶金,2000(3):9-10.
[3]侯振友,付翠宏.不粘煤、贫煤在捣固焦炉的应用[J].燃料与化工,2008,39(2):24.
[4]杨颋.司马选煤厂选煤工艺的探讨[J].煤炭加工与综合利用,2014(5):12-16.
[5]杨跟狮.常村煤矿洗煤厂可持续发展可行性分析[J].煤,2013,22(2):61-64.
[6]张淑强.余吾选煤厂煤泥浮选工艺改造实践[J].煤炭技术,2013,32(9):129-131.
[7]邵怀志,谢广元,刘畅,等.浮选柱与浮选机分选细粒粉煤的对比性实验研究[J].煤炭工程,2011,43(9):103-105.
[8]宋波,支玉文,曾德东,等.煤泥浮选最佳粒度的探讨[J].煤炭加工与综合利用,2001(1):16-18.
[9]唐利刚,谢广元,石常省.旋流微泡浮选柱分选系统的耗散结构分析[J].洁净煤技术,2007,13(1):18-20,27.
[10]葛咸浩.操作参数对浮选柱分选效果的影响[J].洁净煤技术,2013,19(3):6-9,13.