F Spiral Classifier

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F Spiral Classifier

Publish time 2017-06-07 14:13

Spiral classifier is a kind of classification device in mineral processing. It is widely used with ball mill to form a closed circuit in concentrator to classify ore sand. Or it can be used in gravity mill to classify ore sand and fine clay. In metal processing flow, it can also classify particle pulp, deal desliming, dehydration work. Spiral classifier uses gravity and centrifugal force to classify particle. It has simple structure, reliable working performance. There are four kinds of spiral classifiers: high weir single spiral, high weir double spiral, submerged single spiral and submerged double spiral. It is assembled by transmission device, spiral, trough, elevating device, lower supporting (liner) and discharge valve.

FG TYPE High Weir Spiral Classifier　

Model & Specification		FG - 5	FG - 7	FG - 10	FG - 12	2FG - 12
Spiral Diameter(mm)		500	750	1000	1200	1200
Spiral Speed(r/min)		8.5-15.5	4.5-9.9	3.5-7.6	5,6,7	5,4,6
Water Trough	Length(mm)	4500	5500	6500	6500	6500
	Width(mm)	550	830	1112	1372	2600
	Inclined Angle	14°-18.5°
Height of Overflow Weir(mm)		310	400	521	290	400
Height of Spiral Lifting(mm)		430	520	700	1000	400
Capacity (t/24h)	Overflow Quantity	32	65	85	155	310
Capacity (t/24h)	Circulating Load	143-261	256-564	473-1026	1170-1600	2340-3200
main drive	Model	Y90L-6	Y132S-6	Y132S-4	Y132M2-6	Y132M2-6
main drive	Power(kw)	1.1	3	5.5	5.5	5.5x2
Promote	Model					Y100L1-4
Promote	Power(kw)					2.2x2
Outline Dimension(mm)		5413x934 x1248	6720x1267 x1584	8004x1570 x1934	8180x1570 x3130	8230x2787 x3110
Weight　(t)		1.6	2.83	4	8.54	15.84

FG Type High Weir Spiral Classifier

FC型　沉没式　螺旋分级机

Model & Specification		FG - 20	FG - 24	2FG - 20	2FG - 24	2FG - 30	2FG - 38
Spiral Diameter(mm)		2000	2400	2000	2400	3000	3800
Spiral Speed(r/min)		3.6, 5.5	3.64	3.6, 5.5	3.67	3.2	2.65
Water Trough	Length(mm)	8400	9130	9400	9130	12500	14000
	Width(mm)	2200	2600	4280	5100	6300	7900
	Inclined Angle	14°-18.5°
Height of Overflow Weir(mm)		700	715	700	660	400 - 850	1000
Height of Spiral Lifting(mm)		1300	1300	1300	1300	1500	1780
Capacity (t/24h)	Overflow Quantity	400	580	800	1160	1785
Capacity (t/24h)	Circulating Load	3890-5940	6800	7780-11880	13600	23300
Main Driving	Model	Y160L-6 Y160-4	Y160L-4	Y200L2-6 Y200L-4	Y200L-4	Y225M-4
Main Driving	Power(kw)	11 , 15	15	22 , 30	30	45
Hoisting Device	Model	Y100 L2-4	Y100 L2-4	Y100 L2-4	Y100 L2-4	Y100L1-4
Hoisting Device	Power(kw)	3	3	3.0x2	3x2	4x2
Outline Dimension(mm)			11562x2910 x5966	10995x4595 x4490	12710x5430 x5690	16020x6640 x6350
Weight　(t)			25.65	36.34	45.87	73.03	122.35

FC Type Submerged Spiral Classifier

Model & Specification		FC- 12	2FC - 12	FC - 15	2FC - 15	FC - 20
Spiral Diameter　(mm)		1200	1200	1500	1500	2000
Spiral Speed (r/min)		2.5，4.6	3.8，6	2.5，4.6	2.5，4.6	3.6，5.5
Water Trough	Length(mm)	8400	8400	10500	10500	12900
	Width(mm)	1372	2600	1664	3200	2200
	Inclined Angle	14°-18.5°
Height of Overflow Weir(mm)		1100	1100	1300	1300	1800
Height of Spiral Lifting (mm)		1400	1400	1800	1800	2100
Capacity (t/24h)	Overflow Quantity	120	240	185	370	320
Capacity (t/24h)	Circulating Load	1170-1630	1770-2800	1140-2740	2280-5480	3890-5940
Main Driving	Model	Y160M-6	Y160M-6	Y160M-6	Y160M-6	Y160M-6 Y160-4
Main Driving	Power(kw)	7.5	7.5x2	7.5x2	7.5x2	11，15
Hoisting Device	Model	Y100L1-4	Y100L1-4	Y100L1-4	Y100L1-4	Y100L2-4
Hoisting Device	Power (kw)	2.2	2.2x2	2.2x2	2.2x2	3.0
Outline Dimension(mm)		10371x1534 x3912	10371x2787 x3912	12670x1810 x4888	12670x3368 x4888	15398x2524 x5345
Weight 　(t)		11.10	19.61	15.32	27.45	29.06

FC Type Submerged Spiral Classifier

Model & Specification		2FC- 20	FC - 24	2FC - 24	2FC - 30	2FC - 38
Spiral Diameter (mm)		2000	2400	2400	3000	3800
Spiral Speed(r/min)		3.6，5.5	3.64	3.67	3.2	3.2
Water Trough	Length(mm)	12900	14130	14130	14130	14300
	Width(mm)	4280	2600	5100	6300	7900
	Inclined Angle	14°-18.5°
Height of Overflow Weir(mm)		1800	2000	2000	2200	2200
Height of Spiral Lifting(mm)		2100	2300	2300	2600	2600
Capacity (t/24h)	Overflow Quantity	640	455	910	1410
Capacity (t/24h)	Circulating Load	7780-11880	6800	13700	23300
main drive	Model	Y200L2-6 Y200L-4	Y180M-4	Y225S-4	Y225M-4
main drive	Power(kw)	22，30	18.5	37	45
Hoisting Device	Model	Y100L2-4	Y112M-4	Y112M-4	Y112M-4
Hoisting Device	Power(kw)	3x2	4.0	4x2	4x2
Outline Dimension(mm)		15760x4595 x5635	16700x2926 x7190	17710x5430 x7995	17820x6640 x8680
Weight (t)		50	37.27	65.28	84.87	120.5

F spiral separator is introduced in detail
The product uses and characteristics of spiral classifier：
　　Spiral classifier is a very classic classification equipment processing equipment, mainly used for mill grinding circuit in pre classification and grading check, and desliming ore, washing and other operations. Spiral classifier by gravity or centrifugal force, the material according to the classification and settlement law of particles in a fluid in the device. Its main point is:
The grinding machine has the advantages of simple equipment, reliable work, convenient operation, easy to form a loop with less than 4.0m.
Spiral classifier can be divided into high weir type and submerged in the structure of two.
High weir type is suitable for coarse grain classification, and its classification overflow particle size is generally greater than 0.15mm.
Sinking type spiral classifier is suitable for fine classification, the classification of the overflow particle size generally less than 0.15mm.
Spiral classifier classification:
High weir type single spiral and high weir type single spiral double helix, sunk and sunk four type double spiral classifier, namely self flow type air classifier classifier.
Spiral classifier scope:
The classifier is with solid particle of different sizes, different proportion, the principle of different settling rate in the liquid, fine particles floating in the water to overflow the coarse particles sink to the bottom. The spiral to the upper discharge, to a hierarchical classification of mechanical equipment, the mill can grind the powder level in the filter, and then use the coarse material piece rotary vane screwed spiral mill feed inlet, to filter out fine material discharged from the overflow tube. The machine uses the base channel, the body adopts welded steel plate. Into the head of the screw shaft, the shaft head, using pig iron, durable, lifting devices of electric and manual two.
The working principle of air classifier LHB self flow type powder classifier:
The material from the first grade classification system in area from the feed system into the majority of coarse particles are separated, a small amount of coarse fine powder entrained by ascending gas flow into the turbine grade area. Two grade, fine powder enters through the classification round trap collection, coarse particles from the discharge valve discharge classifier.
The performance advantages and characteristics of air classifier LHB self flow type powder classifier:
Since the current classifier is a new type of Superfine Classifier Zhengyuan Powder Engineering Equipment Co. Ltd. developed, is a perfect combination of self shunt technology and centrifugal inertia grading classification technology, the core technology reached the world advanced level, technical performance of a qualitative leap than the turbo classifier.
1: the same amount of low energy consumption, energy consumption is 50% lower than the other horizontal and vertical classifier.
2: the same amount of processing efficiency, the classification efficiency is 50% higher than other horizontal and vertical classifier.
3: high precision grade high fineness, completely eliminate large particles and sieve residue in products.
4 low speed: the same size grading, rotation speed ratio other horizontal and vertical classifier is reduced by 50%. Production of powder Mohs hardness of <5, grading wheel wear; the production of more than 7 Mohs hardness of powder, grading wheel service life than other horizontal and vertical increased 5 ~ 8 times.
5 high output: mainframe production up to 50t/h.
6 the whole structure: according to different special requirements, the configuration of the special hierarchical structure.
7 with the ball mill, Raymond mill, grinding, grinding and other air impact grinding equipment composed of closed or open system.
8 negative pressure production, no dust pollution, good environment.
9 high degree of automation, strong stability, easy to operate.

The working principle of spiral classifier：
　　Spiral classifier with solid particle of different sizes, different proportion, the principle of different settling rate in the liquid, fine particles floating in the water to overflow the coarse particles sink to the bottom. The spiral to the upper discharge, to a hierarchical classification of mechanical equipment, the mill can grind the powder level in the filter, and then use the coarse material piece rotary vane screwed spiral mill feed inlet, to filter out fine material discharged from the overflow tube. The machine uses the base channel, the body adopts welded steel plate. Into the head of the screw shaft, the shaft head, using pig iron, durable, lifting devices of electric and manual two.
　
Spiral classifier structure:
Classifier is mainly composed of transmission device, helix, tub, lifting mechanism, the lower bearing (bearing) and row ore valve.
Equipment characteristics:
1. SF series sand powder separator that using Japanese technology, dedicated to paint powder separation mechanism of sand dry process production technology, can be very convenient control mechanism sand powder content, meet the requirements of users.
2. Advanced technology, simple process, particularly suitable for dry process system of large and medium-sized sand production line is used.
3. 0.00 -- 0.75 mm adjustable between 2% and 15% of stone powder content.
4. The powder quality easy to control, fineness adjustment convenient, flexible and reliable.
5. Tile lining, repair rate is very low.
6. Adopt frequency conversion control technology, simple operation.
2. F spiral classifier performance and maintenance methods
Spiral classifier performance
* the cumulative production of 1500 units
* spiral classifier national standards unit
* research and development of the largest international specifications of the phi 3.8 m spiral classifier in kengtung, yunnan jinghong and phi 3.6 m series ball mill used in good condition.
Spiral classifier method of installation, operation and maintenance:
(a) installation: machine through inspection without injury, screw loosening, can be installed. The classifier should be firmly installed in pouring concrete on the basis of the good. Foundation design should have very good supporting effect, reduce the shear stress of screw.
(2) the operation of the structure and working principle of spiral classifier after clear, can control the machine.
1, helix turning before starting to into pulp, and gradually increase to the amount of ore.
2, helix in working state, in case of special fault such as jam, overload) must stop immediately, will be immediately transported to ascend out of pulp surface, never allow helix pressure within the pulp, open the valve on the ore, avoid silting up.
3, start again, should be the helicoid dropped to a certain location, to turn the helix.
4, when the machine is in use for parking, should first stop feeding, treat cheng finish grading, no material in the later, to stop work.
(3) maintenance
1, all lubricating points are to sodium calcium base grease or grease lubrication.
2, each class should check reducer internal lubricating oil is the oil needle etching line, once every six months in oil.
3, should be regularly check the lower bearing or intermediate bearings, bearings, seals for wear, bearing damage, so as to timely replacement.
4, bearing lubrication must be every 4 hours by manual oil pump to the bearing pressure in high pressure oil injection, to keep the bearing sealing performance.
High weir type spiral classifier work key is grinding fineness. Its standard broken and grizzly screen hole size adjustment. So the judge of high weir type spiral classifier is to look at these two points. Generally high weir type spiral classifier production requirements grading machine spindle put in position. As the ore in the classifier not clean, under heavy set for a long time, the setting in the slime is real, when down grading machine spindle, because is not careful, not put the spindle completely down, causing sand return fewer than normal situation. Spindle didn't put down also may be due to the main shaft for a long time not to clean oil, so should pay attention in the process of operating the ball grinder must supervise crushing system if the ball mill in the production of feed particle size changes, must be immediately reflected in the crushing workshop. Eventually required crushing particle size as fine as possible.
High weir type spiral classifier blade wear: after the blade wear, relative to the sand return amount is reduced, cause dilatation of the grinding fineness, on the other hand, if the blade wear, will affect the life of classifier, so check the blade wear condition in a timely manner in the work, timely replacement of worn blades. Ball mill, classifier impeller rotational speed, classifier of spacing: in ball mill is set when buy, pay attention to when buy view consulting.
High weir type spiral classifier overflow weir height, size affects the precipitation of ore area, in production, we can according to the requirement of the grinding fineness, appropriate of classifier overflow weir height adjustment, if you want the grinding fineness and welding a certain height in the classifier two edge Angle, pull the plug wood with method to adjust the classifier overflow weir height, sometimes through the slime long-term accumulation, can raise the height of the overflow dam nature.
High weir spiral classifier opening under high and low, classifier opening size, opening grading machine, grading machine opening size was produced during the equipment installation on-site, in many plants, because in equipment installation classifier to adjust the opening size has no good, and workers in the process of operation and doesn't pay attention to, intangible is also affected the grinding operation. Classifier under low opening, relative area ore deposits is big, so the sand return quantity will be big, grinding fineness is relatively thin, classifier under open big, relative area is ore precipitation, water is relatively flat, so the sand return quantity will be big, grinding fineness is relatively thin, the grading machine low opening, sand return quantity is relatively large, the grinding fineness and relatively grading machine open big, relative return sand amount is relatively large, relative to fine grinding fineness. Otherwise the opposite.
Spiral classifier using the matters needing attention:
High weir type spiral classifier work key is grinding fineness. Its standard broken and grizzly screen hole size adjustment. So the judge of high weir type spiral classifier is to look at these two points. Generally high weir type spiral classifier production requirements grading machine spindle put in position. As the ore in the classifier not clean, under heavy set for a long time, the setting in the slime is real, when down grading machine spindle, because is not careful, not put the spindle completely down, causing sand return fewer than normal situation. Spindle didn't put down also may be due to the main shaft for a long time not to clean oil, so should pay attention in the process of operating the ball grinder must supervise crushing system if the ball mill in the production of feed particle size changes, must be immediately reflected in the crushing workshop. Eventually required crushing particle size as fine as possible.
High weir type spiral classifier blade wear: after the blade wear, relative to the sand return amount is reduced, cause dilatation of the grinding fineness, on the other hand, if the blade wear, will affect the life of classifier, so check the blade wear condition in a timely manner in the work, timely replacement of worn blades. Ball mill, classifier impeller rotational speed, classifier of spacing: in ball mill is set when buy, pay attention to when buy view consulting.
High weir type spiral classifier overflow weir height, size affects the precipitation of ore area, in production, we can according to the requirement of the grinding fineness, appropriate of classifier overflow weir height adjustment, if you want the grinding fineness and welding a certain height in the classifier two edge Angle, pull the plug wood with method to adjust the classifier overflow weir height, sometimes through the slime long-term accumulation, can raise the height of the overflow dam nature.
High weir spiral classifier opening under high and low, classifier opening size, opening grading machine, grading machine opening size was produced during the equipment installation on-site, in many plants, because in equipment installation classifier to adjust the opening size has no good, and workers in the process of operation and doesn't pay attention to, intangible is also affected the grinding operation. Classifier under low opening, relative area ore deposits is big, so the sand return quantity will be big, grinding fineness is relatively thin, classifier under open big, relative area is ore precipitation, water is relatively flat, so the sand return quantity will be big, grinding fineness is relatively thin, the grading machine low opening, sand return quantity is relatively large, the grinding fineness and relatively grading machine open big, relative return sand amount is relatively large, relative to fine grinding fineness. Otherwise the opposite.

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