基于深度解离与超细粒浮选技术的炼焦中煤再选研究

金属矿山 ›› 2025, Vol. 54 ›› Issue (6): 114-121.

基于深度解离与超细粒浮选技术的炼焦中煤再选研究

张建国^1,2 　陈宏基³张福旺⁴ 　刘广山^1,2 　王　凯^1,2 　杨海昌³

1. 炼焦煤资源绿色开发全国重点实验室,河南平顶山 467000;2. 中国平煤神马控股集团有限公司,河南平顶山 467000; 3. 国家煤加工与洁净化工程技术研究中心,江苏徐州 221116; 4. 平顶山天安煤业股份有限公司七星选煤厂,河南平顶山 467000

出版日期:2025-06-15 发布日期:2025-07-09
通讯作者: 杨海昌(1991—),男,讲师,博士。
作者简介:张建国(1963—),男,正高级工程师,博士。
基金资助:
国家自然科学基金项目(编号:51920105007,52174265);“十四五”国家重点研发计划项目(编号:2023YFE0100600)。

Study on Coking Coal Middlings Reprocessing Based on Deep Dissociation and Ultrafine Flotation Technology

ZHANG Jianguo^1,2 　 CHEN Hongji³ 　 ZHANG Fuwang ⁴ 　 LIU Guangshan ^1,2　 WANG Kai ^1,2 　 YANG Haichang ³

1. State Key Laboratory of Coking Coal Resources Green Exploitation,Pingdingshan 467000,China; 2. China Pingmei Shenma Holdings Group Co. ,Ltd. ,Pingdingshan 467000,China; 3. National Engineering Research Center of Coal Preparation and Purification,Xuzhou 221116,China; 4. Qixing Coal Preparation Plant,Pingdingshan Tian′an Coal industry Co. ,Ltd. ,Pingdingshan 467000,China

Online:2025-06-15 Published:2025-07-09

摘要/Abstract

摘要： 炼焦煤在分选加工过程中会产生 30%以上的炼焦中煤,炼焦中煤的细粒分散嵌布导致其分选回收困难。为解决该问题,课题组提出了基于深度解离与超细粒浮选的炼焦中煤再选工艺,即借助节能陶瓷搅拌磨磨矿,用自制的旋流静态微泡浮选机分选,并采用响应曲面法“Box-Behnken”模型进行浮选试验参数优化研究。结果表明,河南某选煤厂的高灰炼焦中煤矿样采用 JM-1L 型搅拌磨机磨至 D90 = 12. 87 μm 即可有效释放出炼焦中煤中的精煤;基于单因子条件试验和“Box-Behnken”模型优化,得到精煤产率与浮选完善指标的拟合模型,认为在柴油用量 4 601. 62 g / t、仲辛醇用量 3 955. 56 g / t、叶轮转速 1 487. 4 r/ min 情况下浮选指标最好,这得到了实际浮选试验的印证,研究结果可作为现场高灰炼焦中煤开发利用的依据。

关键词: 炼焦中煤再选, 　深度解离, 　搅拌磨磨矿　, 超细粒浮选　, 响应曲面法

Abstract: During the beneficiation process of coking coal,over 30% of middlings are generated. The fine and dispersed distribution of these middlings makes their separation and recovery challenging. In order to address this issue,the research team proposed a reprocessing technique for coking coal middlings based on deep liberation and ultrafine particle flotation. This method involves grinding with an energy-saving ceramic stirred mill,separation using a self-developed cyclone-static micro-bubble flotation column,and optimization of flotation parameters via the " Box-Behnken" response surface methodology. The results showed that high-ash coking coal middlings from a coal preparation plant in Henan could effectively release clean coal when ground to D90 = 12. 87 μm using a JM-1L stirred mill. Based on single-factor conditional tests and " Box-Behnken" model optimization,a fitting model for clean coal yield and flotation efficiency index was established. The optimal flotation performance was achieved with a diesel dosage of 4 601. 62 g / t,2-octanol dosage of 3 955. 56 g / t,and an impeller speed of 1 487. 4 r/ min, which was confirmed by actual flotation tests. The findings provide a theoretical basis for the industrial utilization of high-ash coking coal middlings.

Key words: coking coal middlings reprocessing,deep dissociation,grinding with stirred mill,ultrafine flotation,response surface method

中图分类号:

张建国, 陈宏基, 张福旺, 刘广山, 王　凯, 杨海昌. 基于深度解离与超细粒浮选技术的炼焦中煤再选研究[J]. 金属矿山, 2025, 54(6): 114-121.

ZHANG Jianguo, CHEN Hongji , ZHANG Fuwang, LIU Guangshan , WANG Kai , YANG Haichang . Study on Coking Coal Middlings Reprocessing Based on Deep Dissociation and Ultrafine Flotation Technology [J]. Metal Mine, 2025, 54(6): 114-121.

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