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Optimization and Upgrading of Grinding and Classification Process in Luzhong Concentrator
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Xiaolong LI1, Junkai LUO2, Chengyou WU2, Xiang WANG2
Mining and Metallurgical Engineering | 2025, 45(4) : 109 - 114
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Mining and Metallurgical Engineering | 2025, 45(4): 109-114
• MINERAL PROCESSING •
Optimization and Upgrading of Grinding and Classification Process in Luzhong Concentrator
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Xiaolong LI1, Junkai LUO2, Chengyou WU2, Xiang WANG2
Affiliations
  • 1.Luzhong Mining Co., Ltd., Jinan 271113, Shandong, China
  • 2.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.020
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To address the problem in the existing grinding and classification system in Luzhong concentrator, the 5# grinding and classification system in the concentrator was optimized and upgraded by the following measures, including optimizing the working conditions of the autogenous mill, adding pre-concentration process with magnetic pulley for the oversized material of the drum screen and wet pre-concentration process before the ball mill, replacing the spiral classifier with a hydrocyclone group. Those measures can not only increase the actual processing capacity of 5# system to 232 t/h from 186 t/h, but also discard waste ore grading 7.05% TFe with a yield of 5.40%, presenting an iron loss rate of 1.25%. Meanwhile, +0.5 mm coarse sand can be produced with a yield of 12.63% and an iron loss rate of 3.86%. It is shown that in the first-stage overflow of the hydrocyclone, 44.09% product grading 53.00% TFe is yielded, indicating a good effect by optimization and upgrading measures.

concentrator  /  iron ore  /  grinding  /  classification  /  optimization and upgrading  /  pre-concentration for tailings discarding  /  wet pre-concentration  /  hydocyclone
Xiaolong LI, Junkai LUO, Chengyou WU, Xiang WANG. Optimization and Upgrading of Grinding and Classification Process in Luzhong Concentrator[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 109 -114 . DOI: 10.3969/j.issn.0253-6099.2025.04.020
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Year 2025 volume 45 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.04.020
  • Receive Date：2025-01-17
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-01-17
Affiliations
    1.Luzhong Mining Co., Ltd., Jinan 271113, Shandong, China
    2.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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