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摘要:
这是一篇矿业工程领域的论文。针对攀钢富集污泥球团成型粘结剂成本高，粉碎率高等问题，开发出低成本有机粘结剂。并研究了水分、压力、烘干温度等因素对球团落下强度和粉碎率的影响。粘结剂添加1.5%，生球落下强度＞5 次/m，干球落下强度＞28 次/2 m，粉碎率＜2%，完全满足现场生产要求，吨球粘结剂成本降低35%以上。
Abstract:This is an article in the field of mining engineering. Aiming at problems of high cost and high comminution rate in the iron enriched sludge pelletizing process, a new kind of low cost binder was developed. In this paper, the effects of water content, pressure and drying temperature on the falling strength and comminution rate of the pellets were studied. The results show that when the binder ratio is 1.5%, the falling strength of the raw pellets is more than 5 times/m, the falling strength of dried ball is more than 28 times/2 m, the comminution rate is less than 2%, which meets the requirements of production. At the same time, the binder cost of per ton pellet is reduced by 35% compared with the previous binder.
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Key words:
- Mining engineering /
- Iron enriched sludge /
- Binder /
- Falling strength /
- Comminution rate
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表 1 基团与阳离子电负性差值
Table 1. Difference in electronegativity between groups and cations
名 称 Fe3+ Fe2+ Al3+ Ca2+ Mg2+ Ti4+ H+ -COO- 2.11 2.21 2.3 2.91 2.6 2.37 1.81 -OH 2.04 2.14 2.23 2.84 2.53 2.3 1.74 
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表 2 富集污泥原料成分分析/%
Table 2. Analysis of material composition of enriched sludge
MFe TFe MgO SiO2 P S CaO 39.44 61.38 1.77 4.03 0.083 0.027 5.30
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表 3 富集污泥粒度组成
Table 3. Particle size composition of enriched sludge
粒度/mm +0.25 -0.25+0.15 -0.15+0.12 -0.12+0.063 -0.063 合计 含量/% 30.08 37.73 7.46 22.22 2.51 100.00
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表 4 富集污泥压球有机粘结剂配方
Table 4. Formulation of enriched sludge pellet organic binder
有机物A 改性剂 增粘剂 固化剂 100% 0.48%～0.53% 1.8%～2.4% 0.27%～0.33%
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表 5 YFN-1型粘结剂有害元素S、P含量及烧损/%
Table 5. Contents and burning loss of harmful elements S and P in YFN-1 type binder
P S 烧损(350 ℃) 烧损(950 ℃) 0.021 0.117 80.18 98.64
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表 6 生球由不同高度落下时受到的反向冲击力/N
Table 6. Reverse impact force of pellets falling from different heights
高度/m 0.5 1 1.5 2 冲击力/N 1 F 1.414 F 1.732 F 2 F
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表 7 现场压制的富集污泥球团落下强度及粉碎率
Table 7. Falling strength and comminution rate of enrichment sludge pellets pressed on site
粘结剂
配比/%水分/
%生球强度/
（次/m）干球强度/
（次/2 m）粉碎率/
%实验组1 1.50 4.91 9.8 66.9 1.14% 实验组2 2 4.4 12.8 ＞72.9 0.67%
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表 8 现用复合粘结剂与YFN-1型粘结剂各项指标比较
Table 8. Comparison of various indexes between current composite binder and YFN-1 type binder
粘结剂用量/% S P 落下强度/（次/2 m） 粉碎率/% 粘结剂成本/（元/t球团） 企业标准要求 ≤0.10 ≤0.15 ≥3 ≤8 现用复合粘结剂 6 0.13 0.053 2.18 27.24 ＞120 YFN-1型粘结剂 1.5 0.024 0.041 66.9 1.14 ≤75
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[1] 毛瑞, 王飞. 转底炉工艺处理含铁尘泥关键技术[J]. 钢铁, 2020, 55(8):199.MAO R, WANG F. Key technology of treating iron-bearing dust and sludge by rotary hearth furnace process[J]. Iron and Steel, 2020, 55(8):199.
MAO R, WANG F. Key technology of treating iron-bearing dust and sludge by rotary hearth furnace process[J]. Iron and Steel, 2020, 55(8):199.
[2] 沈宗斌, 沙永志. 钢铁粉尘冷固结球团工艺研究[J]. 钢铁, 2003, 38(12):3-5.SHEN Z B, SHA Y Z. Studies on cold bonded briquettes technology of dust from steel industry[J]. Iron and Steel, 2003, 38(12):3-5.
SHEN Z B, SHA Y Z. Studies on cold bonded briquettes technology of dust from steel industry[J]. Iron and Steel, 2003, 38(12):3-5.
[3] 侯静, 吴恩辉, 李军, 等. 攀枝花微细粒级钛精矿冷固结成型实验研究[J]. 矿产综合利用, 2021(1):114-117.HOU J, WU E H, LI J, et al. Experimental study on cold-bonded moulding of Panzhihua micro-size fraction titanium concentrate[J]. Multipurpose Utilization of Mineral Resources, 2021(1):114-117. doi: 10.3969/j.issn.1000-6532.2021.01.019
HOU J, WU E H, LI J, et al. Experimental study on cold-bonded moulding of Panzhihua micro-size fraction titanium concentrate[J]. Multipurpose Utilization of Mineral Resources, 2021(1):114-117. doi: 10.3969/j.issn.1000-6532.2021.01.019
[4] 曹 龙, 段东平. 高炉瓦斯灰含碳球团粘结剂研究[N]. 过程工程学报, 2013, 13(1): 164-167.CAO L, DUAN D P. Study on binder of blast furnace gas ash containing carbon pellets[N]. Chinese Journal of Process Engineering, 2013, 13(1): 164-167.
CAO L, DUAN D P. Study on binder of blast furnace gas ash containing carbon pellets[N]. Chinese Journal of Process Engineering, 2013, 13(1): 164-167.
[5] 屈振民, 张帅, 张延玲. 高铁赤泥制备CaO-SiO2-Fe2O3-Al2O3系微晶玻璃[J]. 有色金属科学与工程, 2019, 10(4):34-38.QU Z M, ZHANG S, ZHANG Y L. Preparation of CaO-SiO2-Fe2O3-Al2O3 system glass-ceramics from red mud with high iron[J]. Nonferrous Metals Science and Engineering, 2019, 10(4):34-38.
QU Z M, ZHANG S, ZHANG Y L. Preparation of CaO-SiO2-Fe2O3-Al2O3 system glass-ceramics from red mud with high iron[J]. Nonferrous Metals Science and Engineering, 2019, 10(4):34-38.
[6] 孙健宁, 刘小杰, 严照照, 等. 不同含量SiO2 对球团质量的影响[J]. 矿产综合利用, 2021(1):118-123.SUN J N, LIU X J, YAN Z Z, et al. Effect of different contents of SiO2 on the quality of pellets of Hansteel[J]. Multipurpose Utilization of Mineral Resources, 2021(1):118-123. doi: 10.3969/j.issn.1000-6532.2021.01.020
SUN J N, LIU X J, YAN Z Z, et al. Effect of different contents of SiO2 on the quality of pellets of Hansteel[J]. Multipurpose Utilization of Mineral Resources, 2021(1):118-123. doi: 10.3969/j.issn.1000-6532.2021.01.020
[7] 田铁磊, 蔡爽, 刘连继. PMC配加庙沟粉球团氧化焙烧行为研究[J]. 矿产综合利用, 2021(6):123-126.TIAN T L, CAI S, LIU L J. Oxidation roasting behavior of pellets made from PMC and Miaogou powder[J]. Multipurpose Utilization of Mineral Resources, 2021(6):123-126. doi: 10.3969/j.issn.1000-6532.2021.06.020
TIAN T L, CAI S, LIU L J. Oxidation roasting behavior of pellets made from PMC and Miaogou powder[J]. Multipurpose Utilization of Mineral Resources, 2021(6):123-126. doi: 10.3969/j.issn.1000-6532.2021.06.020
[8] 曹明明. 张建良. 钒钛磁铁矿冷压含碳球团的粘结剂选择[J]. 矿冶工程, 2012, 35(5):67-68.CAO M M, ZHANG J L. Selection of binder for vanadium titanomagnetite cold-pressed carbon pellets[J]. Mining Metallurgical Engineering, 2012, 35(5):67-68.
CAO M M, ZHANG J L. Selection of binder for vanadium titanomagnetite cold-pressed carbon pellets[J]. Mining Metallurgical Engineering, 2012, 35(5):67-68.
[9] 李宏煦. 铁矿球团有机粘结剂的分子初步设计及开发研究[J]. 烧结球团, 1998, 23(1): 30-35.LI H X. Molecular preliminary design and development of organic binder for iron ore pellets[J]. Sintered pellets, 1998, 23(1): 30-35.
LI H X. Molecular preliminary design and development of organic binder for iron ore pellets[J]. Sintered pellets, 1998, 23(1): 30-35.
[10] L 鮑林. 化学键的本质[M]. 上海: 上海科学技术出版社, 1981.Linus Pauling. The nature of bonds[M]. Shanghai: Shanghai Science and Technology Press, 1981.
Linus Pauling. The nature of bonds[M]. Shanghai: Shanghai Science and Technology Press, 1981.
[11] 王淀佐. 矿物浮选和浮选剂-理论与实践[M]. 湖南: 中南工业大学出版社, 1986.WANG D Z. Mineral flotation and flotation agents-theory and practice[M]. Hunan: Central South University of Technology Press, 1986.
WANG D Z. Mineral flotation and flotation agents-theory and practice[M]. Hunan: Central South University of Technology Press, 1986.
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