废轮胎热裂解炭黑浮选降灰

力涛; 王帅; 陈王洋; 姜海迪; 付元鹏

doi:10.3969/j.issn.1000-6532.2023.06.027

废轮胎热裂解炭黑浮选降灰

1.
中国矿业大学化工学院，江苏　徐州　221116

2.
中国矿业大学现代分析与计算中心，江苏　徐州　221116

基金项目: 国家自然科学基金(51904295)；中央高校基本科研业务费专项资金(2019QNA21)；中国矿业大学实验技术研究与开发项目（S2021Y009）

详细信息

作者简介: 力涛（1996-），男，硕士生，主要从事矿物加工工程方面的研究

通讯作者: 王帅（1985-），男，博士，副教授，硕士生导师，主要从事二次资源综合利用方面的研究工作

中图分类号: TD97

收稿日期: 2021-05-29

修回日期: 2021-07-10

刊出日期: 2023-12-25

Flotation of Pyrolysis Carbon Black from Waste Tires

1.
School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China

2.
Advanced Analysis & Computation Center, China University of Mining and Technology, Xuzhou, Jiangsu, China

More Information

Corresponding author: Wang Shuai, shwang@cumt.edu.cn

Received Date: 29 May 2021

Revised Date: 10 July 2021

Publish Date: 25 December 2023

摘要

摘要:
这是一篇矿物加工工程领域的论文。本文通过浮选法对废轮胎热裂解炭黑进行了降灰提纯研究，探究了不同操作因素对炭黑浮选提质的影响规律，并借助形貌和物相表征技术对不同浮选产物的性质进行了分析。结果表明，当矿浆浓度为20 g/L、捕收剂用量为500 g/t、起泡剂用量为1500 g/t、刮泡时间9 min和充气量为0.25 m³/h时，炭黑浮物产率为62.32%，灰分为17.29%，沉物产率为37.68%，灰分为23.32%，石英脱除率为75.49%，碳酸钙脱除率为66.23%，石英、方解石等矿物质得到了有效的去除，其中充气量对实验影响较为显著。研究表明浮选法可对废轮胎热裂解炭黑进行降灰，可作为热裂解炭黑降灰提纯的有效预处理方法。
- 矿物加工工程 /
- 废弃轮胎 /
- 热裂解炭黑 /
- 浮选 /
- 降灰提纯
Abstract:
This is an essay in the field of mineral processing engineering. The flotation method is applied to reduce ash content and purify pyrolysis carbon black from waste tires in this study. The effect of different operating factors on carbon black flotation was explored, and the phase and morphology of different flotation products were measured by various characterization methods. Results show that 62.32% yield of clean carbon black and 17.29% ash content for flotation concentrate were obtained, and 37.68% yield of flotation tailing and 23.32% ash content were obtained as well under the optimal flotation conditions were of 20 g/L of concentration, 500 g/t of collector, 1500 g/t of foaming agent, 9 min of froth skimming time and 0.25 m³/h of aeration amount, and the removal rate of quartz is 75.49% and the removal rate of calcium carbonate is 66.23%. Minerals including quartz and calcite were effectively removed by flotation, The amount of aeration had more significant impact on the test. This study indicates that flotation can be well used for reducing ash content of pyrolysis carbon black from waste tires which is proved to be an effective ash reduction pretreatment method.
- Mineral processing engineering /
- Waste tires /
- Pyrolysis carbon black /
- Flotation /
- Ash reduction and purification

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图 1 粒度组成分析

Figure 1.

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图 2 热裂解炭黑FSEM-EDS分析

Figure 2.

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图 3 水玻璃用量对浮选效果的影响

Figure 3.

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图 4 起泡剂用量对浮选效果的影响

Figure 4.

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图 5 捕收剂用量对炭黑浮选的影响

Figure 5.

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图 6 矿浆浓度对浮选的影响

Figure 6.

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图 7 充气量大小对热裂解炭黑浮选的影响

Figure 7.

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图 8 刮泡时间对浮选的影响

Figure 8.

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图 9 热裂解炭黑浮选入料和产物的XRD对比

Figure 9.

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图 10 炭黑浮选产物和入料的EPMA分析

Figure 10.

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表 1 正交实验因素及水平

Table 1. Orthogonal test factors and levels

水平	因素A	因素B	因素C	因素D	因素E
水平	煤油用量 /(g/t)	仲辛醇用量 /(g/t)	充气量 /(m³/h)	矿浆浓度 /(g/L)	刮泡时间 /min
1	0	0	0.15	10	3
2	500	500	0.20	15	5
3	1000	1000	0.25	20	7
4	1500	1500	0.30	25	9

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表 2 正交实验结果

Table 2. Orthogonal test for purification of carbon black

实验号	A	B	C	D	E	浮物产率/%	浮物灰分/%	石英脱除率/%	碳酸钙脱除率/%
1	1	1	4	3	2	21.32	18.35	82.10	81.19
2	2	1	1	1	3	34.57	17.72	74.64	68.87
3	3	1	3	4	1	27.46	17.79	80.43	75.54
4	4	1	2	2	4	42.40	17.12	62.79	61.36
5	1	2	3	2	3	48.35	18.36	62.43	55.53
6	2	2	2	4	2	49.68	17.96	61.17	54.22
7	3	2	4	1	4	57.65	18.01	47.71	46.20
8	4	2	1	3	1	44.96	17.57	65.57	58.87
9	1	3	1	4	4	43.43	18.26	66.95	60.36
10	2	3	4	2	1	36.49	17.96	70.69	67.05
11	3	3	2	3	3	67.24	18.23	43.11	36.29
12	4	3	3	1	2	56.08	17.67	70.66	60.67
13	1	4	2	1	1	19.29	17.17	86.68	89.17
14	2	4	3	3	4	58.22	17.52	71.35	64.45
15	3	4	1	2	2	57.27	17.01	82.67	65.34
16	4	4	4	4	3	68.84	18.33	41.32	47.13
K1	72.14	70.97	70.57	70.57	70.48
K2	71.16	71.90	70.47	70.45	70.99
K3	71.04	72.12	71.34	71.66	72.64
K4	70.69	70.02	72.65	72.34	70.91
R	1.10	2.10	2.17	1.90	2.16

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表 3 方差分析

Table 3. Analysis of variance

方差来源	偏差平方和	自由度	均方	F比	临界值
因素A	0.35	3	0.12	0.49	F_0.01(3,12)=5.95
因素B	0.54	3	0.18	0.76
因素C	0.73	3	0.24	1.02	F_0.05(3,12)=3.49
因素D	0.67	3	0.22	0.95
因素E	0.67	3	0.22	0.95	F_0.1(3,12)=2.61
误差	2.84	12	0.24
合计	5.79	15

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表 4 热裂解炭黑主要杂质含量及其去除率

Table 4. Content and removal rate of Main impurity from pyrolysis carbon black

矿物成分	含量/%			去除率/%
矿物成分	原料	浮物	沉物	去除率/%
硫化锌	9.68	12.48	2.49	9.69
石英	3.86	1.21	7.72	75.49
碳酸钙	2.87	1.23	5.04	66.23

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