Process and Application of Longi Automatic Magnetic Flotation Separator

• Type: Magnetic Separator
• Voltage: According to The Site Power Conditon
• Weight: 1-10t
• Material: Stainless Steel
• Material Feature: Fire Resistant
• Certification: ISO9001:2008, ISO9001:2000, CE, SGS
• Model NO.: LJC
• Energy Saving: Energy Saving
• Warranty: 1 Year
• Color: Grey
• Customized: Non-Customized
• Condition: New
• After-sales Service: 12months
• Transport Package: Iron Frame Case or Nude Packing
• Trademark: LONGi
• Origin: China
• HS Code: 84741000
• Production Capacity: 100set/Year

Product Description

Process and Application of LONGi Automatic Magnetic Flotation Separator

Project brief
In January 2021, a mining company introduced two LJC-10000 (φ2000mm) type automatic magnetic separator produced by LONGi. The equipment is used for the last stage separation of the milling workshop 3660 of the mining industry.
The original beneficiation process of the plant uses two ends of grinding, three sections of magnetic separation, the introduction of magnetic levitation separator, magnetic levitation separator installed in the three sections of magnetic separator after.
It will be put into operation on February 1, 2021. After three days of commissioning, the first stage of application, when the concentration grade is 60%-61%, the highest concentrate grade can reach more than 67.5%;When the concentration grade reaches above 66%, the concentrate grade reaches the highest 70%.After March 10, 2021, the second stage of roughing experiment was carried out, the grinding size was from -200 mesh (65%) to -200 mesh (52%), the concentrate grade was stabilized above 66.5%, and the grinding amount was increased from 170t/h to 270t/h.
Operation data
In Phase I, the product grade up, after about three days of test run, the sample test results at the early stage of test run (2.1-2.3) are as follows:
The operation index of the LONGi automatic flotation magnetic separator

S.L.No.	Date	Feeding TFe	Concentrate TFe	Tailing TFe	Particle
No.1 Flotation magnetic separator	2021.2.1	66.69	68.93	6.03	68
	2021.2.1	63.46	68.93	7.44	68
	2021.2.1	63.03	68.09	7.02	68
	2021.2.1	64.72	68.93	8.28	68
	2021.2.2	66.54	69.91	7.16	68
	2021.2.2	66.26	69.63	6.73	68
	2021.2.2	66.45	70.05	7.20	68
	2021.2.3	61.35	67.53	6.32	62.5
	2021.2.3	60.43	66.54	6.84	62.5
	2021.2.3	60.61	67.14	7.02	62.5
	2021.2.3	61.44	67.98	6.66	62.5
No.2 Flotation magnetic separator	2021.2.1	66.69	68.93	6.00	68
	2021.2.1	63.46	68.93	6.87	68
	2021.2.1	63.03	68.51	7.72	68
	2021.2.1	64.72	68.79	7.02	68
	2021.2.2	66.54	69.49	7.30	68
	2021.2.2	66.26	69.49	6.31	68
	2021.2.2	66.45	69.77	7.20	68
	2021.2.3	61.35	67.25	6.87	62.5
	2021.2.3	60.43	66.44	7.11	62.5
	2021.2.3	60.61	67.11	7.34	62.5
	2021.2.3	61.44	68.09	6.78	62.5

Stage 1: Data show that when the concentration grade is between 60%-61%, the concentrate grade can reach up to more than 67.5%;When the concentration grade reaches above 66.5%, the concentrate grade can reach above 70%.
Stage 2:Increase the production
After 10 March 2021, change the high frequency screen from 0.25mm to 0.4mm.After the test run after automatic setting of the equipment, the sample test results of (3.12-3.17) are as follows:

The operation index of the LONGi automatic flotation magnetic separator

Data	Time	Concentrate TFe	Particle size	Data	Time	Concentrate TFe	Particle size
2021.3.12	15:50	62.25	60.5	2021.3.15	8:50	66.97	50
2021.3.12	17:20	66.12	60.5	2021.3.15	12:20	66.55	50
2021.3.12	18:50	66.26	60.5	2021.3.15	11:50	66.69	50
2021.3.12	20:50	66.55	60.5	2021.3.15	13:50	66.26	50
2021.3.12	22:20	66.83	60.5	2021.3.15	15:20	66.69	50
2021.3.13	0:50	66.41	56	2021.3.15	16:50	66.83	52
2021.3.13	2:20	65.84	56	2021.3.15	18:20	66.12	52
2021.3.13	3:50	66.83	56	2021.3.15	19:50	66.41	52
2021.3.13	5:50	66.41	56	2021.3.15	21:50	66.55	52
2021.3.13	7:20	66.12	56	2021.3.15	23:20	65.84	52
2021.3.13	8:50	67.25	57	2021.3.16	0:50	66.55	50
2021.3.13	10:20	66.83	57	2021.3.16	2:20	66.26	50
2021.3.13	11:50	66.41	57	2021.3.16	3:50	66.26	50
2021.3.13	13:50	66.26	57	2021.3.16	5:50	65.84	52.5
2021.3.13	15:20	66.69	57	2021.3.16	7:20	66.41	56
2021.3.13	16:50	67.11	54	2021.3.16	8:50	66.41	56
2021.3.13	18:20	66.69	54	2021.3.16	12:20	65.84	56
2021.3.13	19:50	66.83	54	2021.3.16	11:50	66.69	56
2021.3.13	21:50	66.69	54	2021.3.16	13:50	66.83	56
2021.3.13	23:20	66.12	54	2021.3.16	15:20	66.97	56
2021.3.14	0:50	65.98	48	2021.3.16	16:50	67.11	54
2021.3.14	2:20	66.41	48	2021.3.16	18:20	67.11	54
2021.3.14	3:50	66.69	48	2021.3.16	19:50	66.12	54
2021.3.14	5:50	66.41	48	2021.3.16	21:50	66.83	54
2021.3.14	7:20	66.26	48	2021.3.16	23:20	66.69	54
2021.3.14	8:50	66.12	50	2021.3.17	0:50	66.97	52.5
2021.3.14	12:20	65.98	50	2021.3.17	2:20	65.98	52.5
2021.3.14	11:50	66.26	50	2021.3.17	3:50	66.83	52.5
2021.3.14	13:50	67.53	52	2021.3.17	5:50	67.25	52.5
2021.3.14	15:20	66.97	52	2021.3.17	7:20	66.55	52.5
2021.3.14	16:50	67.11	55	2021.3.17	8:50	66.93	50.5
2021.3.14	18:20	67.11	55	2021.3.17	12:20	67.25	50.5
2021.3.14	19:50	66.41	55	2021.3.17	11:50	66.97	50.5
2021.3.14	21:50	66.26	55	2021.3.17	13:50	66.55	50.5
2021.3.14	23:20	66.83	55	2021.3.17	15:20	66.83	50.5
2021.3.15	0:50	66.41	51	2021.3.17	16:50	66.12	53
2021.3.15	2:20	66.41	51	2021.3.17	18:20	65.70	53
2021.3.15	3:50	66.26	51	2021.3.17	19:50	66.26	53
2021.3.15	5:50	66.55	51	2021.3.17	21:50	66.41	53
2021.3.15	7:20	66.41	51	2021.3.17	23:20	66.69	53

The data of the second stage showed that when the particle size was roughened to 52% of -200 mesh, the concentrate grade could reach more than 66.5%.The grinding rate increased from 170t/h to 270t/h.
Automatic control
Automatic flotation magnetic separator has a button to start and stop function, can realize unmanned duty. After one key start, the equipment enters automatic adjustment state, which can adjust parameters such as concentrate valve opening degree and magnetic field intensity according to different ore quantity. In view of the abnormal state in the process of operation, it has automatic adjustment of running black, valve fault alarm, sensor fault alarm and other abnormal state processing functions, which can fully meet the requirements of automatic operation on site and greatly reduce the management cost.
General
After LONGi automatic magnetic separator was applied in this mining industry, the concentrate products were improved obviously and the tailings were of low grade. Under the running condition of coarse and extraction, the grinding output increased by 58%.The equipment has good reliability and stable operation.
Project brief
In January 2021, a mining company introduced two LJC-10000 (φ2000mm) type automatic magnetic separator produced by LONGi. The equipment is used for the last stage separation of the milling workshop 3660 of the mining industry.
The original beneficiation process of the plant uses two ends of grinding, three sections of magnetic separation, the introduction of magnetic levitation separator, magnetic levitation separator installed in the three sections of magnetic separator after.
It will be put into operation on February 1, 2021. After three days of commissioning, the first stage of application, when the concentration grade is 60%-61%, the highest concentrate grade can reach more than 67.5%;When the concentration grade reaches above 66%, the concentrate grade reaches the highest 70%.After March 10, 2021, the second stage of roughing experiment was carried out, the grinding size was from -200 mesh (65%) to -200 mesh (52%), the concentrate grade was stabilized above 66.5%, and the grinding amount was increased from 170t/h to 270t/h.
Operation data
In Phase I, the product grade up, after about three days of test run, the sample test results at the early stage of test run (2.1-2.3) are as follows:
The operation index of the LONGi automatic flotation magnetic separator

S.L.No.	Date	Feeding TFe	Concentrate TFe	Tailing TFe	Particle
No.1 Flotation magnetic separator	2021.2.1	66.69	68.93	6.03	68
	2021.2.1	63.46	68.93	7.44	68
	2021.2.1	63.03	68.09	7.02	68
	2021.2.1	64.72	68.93	8.28	68
	2021.2.2	66.54	69.91	7.16	68
	2021.2.2	66.26	69.63	6.73	68
	2021.2.2	66.45	70.05	7.20	68
	2021.2.3	61.35	67.53	6.32	62.5
	2021.2.3	60.43	66.54	6.84	62.5
	2021.2.3	60.61	67.14	7.02	62.5
	2021.2.3	61.44	67.98	6.66	62.5
No.2 Flotation magnetic separator	2021.2.1	66.69	68.93	6.00	68
	2021.2.1	63.46	68.93	6.87	68
	2021.2.1	63.03	68.51	7.72	68
	2021.2.1	64.72	68.79	7.02	68
	2021.2.2	66.54	69.49	7.30	68
	2021.2.2	66.26	69.49	6.31	68
	2021.2.2	66.45	69.77	7.20	68
	2021.2.3	61.35	67.25	6.87	62.5
	2021.2.3	60.43	66.44	7.11	62.5
	2021.2.3	60.61	67.11	7.34	62.5
	2021.2.3	61.44	68.09	6.78	62.5

Stage 1: Data show that when the concentration grade is between 60%-61%, the concentrate grade can reach up to more than 67.5%;When the concentration grade reaches above 66.5%, the concentrate grade can reach above 70%.
Stage 2:Increase the production
After 10 March 2021, change the high frequency screen from 0.25mm to 0.4mm.After the test run after automatic setting of the equipment, the sample test results of (3.12-3.17) are as follows:

The operation index of the LONGi automatic flotation magnetic separator

Data	Time	Concentrate TFe	Particle size	Data	Time	Concentrate TFe	Particle size
2021.3.12	15:50	62.25	60.5	2021.3.15	8:50	66.97	50
2021.3.12	17:20	66.12	60.5	2021.3.15	12:20	66.55	50
2021.3.12	18:50	66.26	60.5	2021.3.15	11:50	66.69	50
2021.3.12	20:50	66.55	60.5	2021.3.15	13:50	66.26	50
2021.3.12	22:20	66.83	60.5	2021.3.15	15:20	66.69	50
2021.3.13	0:50	66.41	56	2021.3.15	16:50	66.83	52
2021.3.13	2:20	65.84	56	2021.3.15	18:20	66.12	52
2021.3.13	3:50	66.83	56	2021.3.15	19:50	66.41	52
2021.3.13	5:50	66.41	56	2021.3.15	21:50	66.55	52
2021.3.13	7:20	66.12	56	2021.3.15	23:20	65.84	52
2021.3.13	8:50	67.25	57	2021.3.16	0:50	66.55	50
2021.3.13	10:20	66.83	57	2021.3.16	2:20	66.26	50
2021.3.13	11:50	66.41	57	2021.3.16	3:50	66.26	50
2021.3.13	13:50	66.26	57	2021.3.16	5:50	65.84	52.5
2021.3.13	15:20	66.69	57	2021.3.16	7:20	66.41	56
2021.3.13	16:50	67.11	54	2021.3.16	8:50	66.41	56
2021.3.13	18:20	66.69	54	2021.3.16	12:20	65.84	56
2021.3.13	19:50	66.83	54	2021.3.16	11:50	66.69	56
2021.3.13	21:50	66.69	54	2021.3.16	13:50	66.83	56
2021.3.13	23:20	66.12	54	2021.3.16	15:20	66.97	56
2021.3.14	0:50	65.98	48	2021.3.16	16:50	67.11	54
2021.3.14	2:20	66.41	48	2021.3.16	18:20	67.11	54
2021.3.14	3:50	66.69	48	2021.3.16	19:50	66.12	54
2021.3.14	5:50	66.41	48	2021.3.16	21:50	66.83	54
2021.3.14	7:20	66.26	48	2021.3.16	23:20	66.69	54
2021.3.14	8:50	66.12	50	2021.3.17	0:50	66.97	52.5
2021.3.14	12:20	65.98	50	2021.3.17	2:20	65.98	52.5
2021.3.14	11:50	66.26	50	2021.3.17	3:50	66.83	52.5
2021.3.14	13:50	67.53	52	2021.3.17	5:50	67.25	52.5
2021.3.14	15:20	66.97	52	2021.3.17	7:20	66.55	52.5
2021.3.14	16:50	67.11	55	2021.3.17	8:50	66.93	50.5
2021.3.14	18:20	67.11	55	2021.3.17	12:20	67.25	50.5
2021.3.14	19:50	66.41	55	2021.3.17	11:50	66.97	50.5
2021.3.14	21:50	66.26	55	2021.3.17	13:50	66.55	50.5
2021.3.14	23:20	66.83	55	2021.3.17	15:20	66.83	50.5
2021.3.15	0:50	66.41	51	2021.3.17	16:50	66.12	53
2021.3.15	2:20	66.41	51	2021.3.17	18:20	65.70	53
2021.3.15	3:50	66.26	51	2021.3.17	19:50	66.26	53
2021.3.15	5:50	66.55	51	2021.3.17	21:50	66.41	53
2021.3.15	7:20	66.41	51	2021.3.17	23:20	66.69	53

The data of the second stage showed that when the particle size was roughened to 52% of -200 mesh, the concentrate grade could reach more than 66.5%.The grinding rate increased from 170t/h to 270t/h.
Automatic control
Automatic flotation magnetic separator has a button to start and stop function, can realize unmanned duty. After one key start, the equipment enters automatic adjustment state, which can adjust parameters such as concentrate valve opening degree and magnetic field intensity according to different ore quantity. In view of the abnormal state in the process of operation, it has automatic adjustment of running black, valve fault alarm, sensor fault alarm and other abnormal state processing functions, which can fully meet the requirements of automatic operation on site and greatly reduce the management cost.
General
After LONGi automatic magnetic separator was applied in this mining industry, the concentrate products were improved obviously and the tailings were of low grade. Under the running condition of coarse and extraction, the grinding output increased by 58%.The equipment has good reliability and stable operation.
 

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LONGi's in house laboratory is well known for providing professional and accurate sample testing for a wide variety of clients in both the mineral and recycling industries. Based on the lab test results and often a necessary site survey our experienced engineers are proud to be able to offer the best solution available every time we can. Not only do we look for the solution to best process the end users material,but,we are mindful to provide the best value and performance in the most economical way.
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LONGi is proud to be able to provide experienced mechanical, electrical and magnetic engineers able to assist with most any installation, commissioning or training issues that may arise.
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