EGONT - LUMINESCENCE SEPARATOR LSM-50

"INNOVATIVE ECOLOGICAL MINERAL DRESSING TECHNOLOGIES"

Equipment. Separators

LUMINESCENCE SEPARATOR LSM-50 (scheme)

The LSM-50 separator is designed for the preliminary enrichment of spodumene ores and the production of quartz-feldspar concentrates from pegmatite and granite deposits with a particle size of 50 to 10 mm. The separator LSM-50 is based on differences in the X-ray luminescence properties of the minerals being separated.
During preliminary enrichment of spodumene ores, the LSM-50 separator allows:

a) increase the spodumene content by 1.5-2 times for sizes -50+25 mm and by 2-2.5 times for sizes -25+10 mm. (Table 1);
b) comprehensively develop the deposit with the production of spodumene concentrate and extraction of quartz-feldspar concentrates from the tail product of spodumene separation (Table 2).
(Based on the results of studies of ores from the Murmansk region deposit (sample P-1) and Akhmetkino, Kazakhstan.)

Optimal technological parameters for separating spodumene ore (sampling of 100 pieces of size class -50+25 mm, sample P-1)

*Table 1*

**Optimal process parameters of separation by X-ray luminescence properties of sampling of 100 pieces of P-1 sample size class -50+25 mm**
#	Process product	Yield, %	Content,%				Extraction Li₂O,%	K₂O/Na₂O, %	K₂O+Na₂O, %
#	Process product	Yield, %	Li₂O	K₂O	Na₂O	Fe₂O₃	Extraction Li₂O,%	K₂O/Na₂O, %	K₂O+Na₂O, %
	1	2	3	4	5	6	7	8	9
1	Lithium concentrate	47,2	2,83	1,09	2,06	1,35	91,0	0,53	3,15
2	Tail product	52,8	0,25	8,80	2,66	0,47	9,0	3,31	11,46
3	Initial sample	100,0	1,47	5,16	2,45	0,89	100,0	2,10	7,61

*Table 2*

**Sequential separation of lithium and feldspar lump concentrate during pre-enrichment of spodumene ores**
#	Process product	Yield, %	Content,%				Extraction Li₂O,%	K₂O/Na₂O, %	K₂O+Na₂O, %
#	Process product	Yield, %	Li₂O	K₂O	Na₂O	Fe₂O₃	Extraction Li₂O,%	K₂O/Na₂O, %	K₂O+Na₂O, %
	1	2	3	4	5	6	7	8	9
1	Lithium concentrate	47,2	2,83	1,09	2,06	1,35	91,0	0,53	3,15
2	Feldspar concentrate	29,3	0,17	10,74	2,68	0,19	3,4	4,01	13,42
3	Tail product	23,5	0,35	6,37	2,64	0,80	5,6	2,41	9,01
3	Initial sample	100,0	1,47	5,16	2,45	0,89	100,0	2,10	7,61

When enriching ores of pegmatite and granite deposits, the LSM-50 separator extracts feldspar concentrates with a given amount of alkali metals (K₂O and Na₂O) and with a given potassium modulus (K₂O and Na₂O ratio). The results of industrial operation of the LSM-50 separator are presented in the article (Article "New technologies and equipment for the production of quartz-feldspar concentrates" /rus/) <
Parameters of LSM-50
# Parameter Units Values

1 2 3 4

1
Size of pieces
mm –50 +10

2
Output on classes:

–50+20 mm
tons/hour 10

3
–20+10 mm
tons/hour 6

4
Number of channels
2

5
Number of ore sorting channels
8

6
Number of pieces, selected to concentrate per channel for given class, not more than:

–50+20 mm
pieces/sec 10

7
–20+10 mm
pieces/sec 20

8
Compressed air consumption per 1 ton of concentrate, not more than
m³ 25

9
Preparation time(until start), not more than
min. 2

10
Duration of uninterrupted work
hours/day up to 24

11
Degree of automation
– automatic

12
Power consumption
kWatt/hour 1,2

13
Dimensions,
L x B x H

Separator
m 1,97 x 1,22 x 1,55

14
Control unit
m 0,6 x 0,6 x 1,9

15
Weight:
Separator
t about 1,
16
Control unit
t 0,25

**Parameters of LSM-50**
#	Parameter	Units	Values
1	2	3	4
1	Size of pieces	mm	–50 +10
2	Output on classes:	–50+20 mm	tons/hour	10
3	–20+10 mm	tons/hour	6
4	Number of channels		2
5	Number of ore sorting channels		8
6	Number of pieces, selected to concentrate per channel for given class, not more than:	–50+20 mm	pieces/sec	10
7	–20+10 mm	pieces/sec	20
8	Compressed air consumption per 1 ton of concentrate, not more than	m³	25
9	Preparation time(until start), not more than	min.	2
10	Duration of uninterrupted work	hours/day	up to 24
11	Degree of automation	–	automatic
12	Power consumption	kWatt/hour	1,2
13	Dimensions, L x B x H	Separator	m	1,97 x 1,22 x 1,55
14	Control unit	m	0,6 x 0,6 x 1,9
15	Weight:	Separator	t	about 1,
16	Control unit	t	0,25

The separator operates automatically according to the instructions of the technologist, who sets the separation limit based on the content of spodumene or potassium modulus in the pieces. The design of the separator guarantees full protection of personnel from X-ray radiation and noise.

Delivery of LSM-50 is provided within 9 months from the moment of signing a contract. It is possible to supply LSM-50 in a container version, which allows you to install a separation unit directly at the field without using capital construction. Additional technical and/or technological at-site service, wearing components and spare parts delivery can be provided at extra cost.