吕临能化选煤厂煤泥浮选捕收剂优化

杨崇义; 郝波; 樊民强; 杨宏丽; 王月; 尉晓龙

doi:10.3969/j.issn.1000-6532.2024.03.014

吕临能化选煤厂煤泥浮选捕收剂优化

1.
太原理工大学矿业工程学院，山西　太原　030024

2.
霍州煤电集团吕临能化有限公司吕临能化选煤厂，山西　吕梁　033200

基金项目: 山西省回国留学人员科研资助项目资助

详细信息

作者简介: 杨崇义（1996-），男，硕士研究生，研究方向为煤泥浮选

通讯作者: 樊民强（1964-），男，博士，教授，研究方向为煤泥浮选。

中图分类号: TD94

收稿日期: 2022-08-15

刊出日期: 2024-06-25

Collector Optimization for Lyulin Plant's Coal Flotation

1.
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

2.
Coal Preparation Plant of Lyulin Energy & Chemical Co., Ltd., Huozhou Coal & Electricity Group, Lyuliang 033200, Shanxi, China

Fund Project: Research Project Supported by Shanxi Scholarship Council of China, 2020-045

More Information

Corresponding author: FAN Minqiang, fanminqiang@sohu.com

Received Date: 15 August 2022

Publish Date: 25 June 2024

摘要

摘要:
这是一篇矿物加工工程领域的论文。选择吕临能化有限公司选煤厂的5^#、9^#和木瓜三种煤样为研究对象，对三种煤样进行了粒度组成、工业分析与元素分析；采用XRD、FT-IR与XPS等方法对三种煤样的矿物组成和表面官能团进行了分析。采用煤油、现场药剂与实验室自研的TY6药剂进行了浮选实验，对比了三种药剂对不同类型煤样的捕收效果。结果表明，5^#煤样易浮，9^#煤样浮选性能略低于5^#煤，而木瓜煤样氧化程度高，亲水能力强，难浮。对于三种煤样，TY6和现场药剂都表现出明显优于煤油的捕收性能，且用量更低；对于易浮煤样，TY6选择性更好；对于难浮煤样，TY6捕收能力更强。分散粒径小、粘度大、复配有含氧有机物等是TY6异于煤油的主要特点，也因此能够与煤，特别是氧化煤表面更好地作用，使煤表面接触角增大，疏水性变强，可浮性明显改善，在这些方面，TY6表现比现场药剂略胜一筹。
- 矿物加工工程 /
- 煤泥浮选 /
- 浮选药剂 /
- 氧化煤 /
- TY6
Abstract:
This is an article in the field of mineral processing engineering. Three samples of 5^#, 9^# and Mugua coal from Coal Preparation Plant of Lyulin Energy & Chemical Co., Ltd. were collected as the research objects. Screening, proximate analysis and ultimate analysis of the three coal samples were carried out. The mineral composition and surface functional groups of the three coal samples were analyzed by XRD, FT-IR and XPS. Kerosene, on-site reagent and TY6 developed in the laboratory were used for flotation tests. The collecting effect of the three reagents on different types of coal samples was compared. The results showed that 5^# coal sample was easy to float, 9^# coal sample showed less floatability than 5^# coal, while Mugua coal showed the poorest floatability owing to high oxidation and strong hydrophilicity. For the three coal samples, TY6 and the on-site reagents both showed much better collective ability than kerosene and consume less as well. For easy-to-float coal, TY6 showed better selectivity, while for difficult-to-float coal, TY6 showed better collectivity. Smaller particle size dispersed in water, higher viscosity, and containing oxygen-bearing organic substances were the main characteristics of TY6 and the on-site reagents that made them stand out as compared with kerosene, which resulted in better reaction with coal surface, bigger contact angle and better hydrophobicity. In this point of view, TY6 behaved even a little better than the on-site reagents.
- Mineral processing engineering /
- Coal flotation /
- Flotation reagent /
- Oxidized coal /
- TY6

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图 1 煤样的XRD

Figure 1.

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图 2 煤样的FTIR

Figure 2.

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图 3 XPS的C1s分峰拟合

Figure 3.

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图 4 三种捕收剂在水溶液中的粒径分布Fig.4 Particle size distribution of three trapping agents in aqueous solution

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图 5 药剂FT-IR谱

Figure 5.

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表 1 煤样筛分实验结果

Table 1. Screening results of coal samples

粒度/mm	5^#		9^#		木瓜
粒度/mm	产率/%	灰分/%	产率/%	灰分/%	产率/%	灰分/%
-0.5+0.25	18.05	35.40	29.24	13.73	35.19	19.20
-0.25+0.125	30.19	29.29	20.29	19.67	21.58	20.70
-0.125+0.074	13.95	27.98	10.59	20.09	8.60	20.43
-0.074+0.045	12.17	22.91	11.36	20.19	9.10	23.84
-0.045	25.65	33.57	28.52	29.60	25.54	41.69
合计	100.00	30.53	100.00	20.87	100.00	25.80

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表 2 煤样的工业分析和元素分析

Table 2. Proximate and ultimate analysis results of coal samples

煤样	工业分析				元素分析
煤样	水分M_ad/%	灰分A_ad/%	挥发分V_daf/%	固定碳FC_d/%	碳C_d/%	氢H_d/%	氮N_d/%	氧O_d/%	硫S_t,d/%
5^#	0.86	14.69	32.05	57.97	71.21	4.21	1.42	7.70	0.78
9^#	0.62	10.51	28.38	64.10	76.01	4.25	1.35	6.06	1.82
木瓜	0.68	15.22	21.07	66.92	72.25	3.71	1.16	5.83	1.83

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表 3 官能团含量分析

Table 3. Content analysis of functional groups

结合能/eV	碳元素存在形式	含量/%
结合能/eV	碳元素存在形式	5^#	9^#	木瓜
284.8	C-C、C-H	88.56	85.60	85.82
286.2	C-O	11.40	9.09	6.99
287.5	C=O	-	-	1.67
290.0	COO-	-	5.30	5.11

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表 4 5^#煤样浮选实验结果

Table 4. Flotation test results of 5^# coal samples

捕收剂种类及用量/(g/t)	产品名称	产率/%	灰分/%	可燃体回收率/%	浮选完善度/%
煤油 300	精煤	37.05	11.16	45.82	25.18
煤油 300	尾煤	62.95	38.17	45.82	25.18
现场药剂 300	精煤	79.93	17.13	92.90	45.20
现场药剂 300	尾煤	20.07	74.77	92.90	45.20
TY6 300	精煤	74.31	15.25	87.92	47.98
TY6 300	尾煤	25.69	66.33	87.92	47.98
煤油 100	精煤	27.16	9.70	34.34	19.87
煤油 100	尾煤	72.84	35.63	34.34	19.87
现场药剂 100	精煤	75.28	14.35	89.92	37.96
现场药剂 100	尾煤	24.72	70.87	89.92	37.96
TY6 100	精煤	66.85	12.90	80.93	41.46
TY6 100	尾煤	33.15	58.62	80.93	41.46

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表 5 9^#煤样浮选实验结果

Table 5. Flotation results of 9^# coal samples

捕收剂	产品名称	产率/%	灰分/%	可燃体回收率/%	浮选完善度/%
煤油	精煤	54.33	7.47	64.19	38.49
煤油	尾煤	45.67	38.60	64.19	38.49
现场药剂	精煤	79.45	10.38	90.77	52.50
现场药剂	尾煤	20.55	64.75	90.77	52.50
TY6	精煤	79.37	10.07	90.59	52.88
TY6	尾煤	20.63	64.03	90.59	52.88

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表 6 木瓜浮选实验结果

Table 6. Flotation results of Mugua coal

药剂	产品名称	产率/%	灰分/%	可燃体回收率/%	浮选完善度/%
煤油	精煤	43.23	8.14	52.85	31.65
煤油	尾煤	56.77	37.60	52.85	31.65
现场药剂	精煤	59.70	10.18	71.40	46.98
现场药剂	尾煤	40.30	46.69	71.40	46.98
TY6	精煤	65.03	10.55	77.10	49.15
TY6	尾煤	34.97	50.59	77.10	49.15

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表 7 混合煤样的浮选实验结果

Table 7. Flotation results of mixed coal samples

药剂	产品名称	产率/%	灰分/%	可燃体回收率/%	浮选完善度/%
煤油	精煤	62.97	9.47	74.88	41.97
煤油	尾煤	37.03	48.35	74.88	41.97
现场药剂	精煤	71.32	11.43	83.50	42.73
现场药剂	尾煤	28.68	56.46	83.50	42.73
TY6	精煤	72.12	11.43	84.29	43.01
TY6	尾煤	27.88	57.32	84.29	43.01

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表 8 捕收剂作用后木瓜煤样的接触角

Table 8. Contact angle of reagents with Mugua coal samples

作用药剂	原样	煤油	现场药剂	TY6
接触角/（°）	53.13	60.87	80.40	75.88

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