1.Features

1.High enrichment ratio, high recovery rate

2.Cover a small area, small water consumption and easy to operate

3.Light weight, no noise

4.Configuration, installation and service are very convenience

5.Reasonable structure and small occupation area

6.High recovery, high efficiency,

7.And precise separation

8.Non-required power

9.Light in weight, anti corrosion, rust and wear resistant

10.Simple installation and Minimal maintenance requirements

11.Low operating cost and long working life

12.Reliable running with minimal operator attention

13.Strong adaptability to fluctuation of feeding amount, density, size and grade

14.The surface of corundum forms strong friction concentration effect surpass plastic surface

2.Introduction

Gravity Spiral Chute is new equipment with the domestic advanced level, successfully invented by Beijing General Research Institute of Mining and Metallurgy. It is applied for processing iron, tin, tungsten, tantalum, niobium, gold, coal, monazite, rutile, zircon and other metal, nonmetal minerals with enough specific gravity dispersion of granularity ranged from 0.02 to 0.3mm.

The spiral chute used for fold ores , sliver ores ,placer mines , lead zinc ores, copper ores ,tin ores, pyrite ,hematite, limonite, chromite, ferberite, tungsten ores ,tantalite ores , coal ores ,gravity selecting for the ferrous &bib-ferrous metal , non-metalic ores earth ores .it has the advantage of simple structure and light weight, no need power ,saving water &electricity , easy to control and big capacity .

This spiral chute is suitable for sorting granularity 0.3-0.02 mm fine material of iron ore, iron ore, titanium chromite, pyrite, zirconium stones, rutile, monazite, phosphorus b ore, tungsten, tin, tantalum, niobium ore and with ore proportion difference of other non-ferrous metal, rare metals and non-metallic objects

Glass fiber reinforced plastic spiral chute has the domestic advanced level of efficient re-election new equipment. Used for separating particle size 0.3—0.02mm size of iron, tin, tungsten, tantalum, niobium, Ausn, coal, monazite, rutile and ziron as well as other metals, non-metallic mineral with sufficient proportion difference.

The metallurgical department organization relevant scientific research, design, through the verification, and industrial units in colleges and universities that the equipment performance is good, indicators of  advanced, can be used widely to determine the batch production.

3.Application
Rutile, ilmenite and zircon concentration
Iron ore, chromite and manganese beneficiation
Tin, tantalum and ore concentration
Gold, native copper and base metal recovery
Silica sands processing
Titano-magnetite concentration

4. Working principle

In order to have a good separation, there should be a difference in Specific Gravity's of at least 1.0. One main benefit of spiral concentrators is they have no moving parts. The feed range, in percent solids, to a spiral ranges from 20% solids up to 40% solids. Depending upon the material characteristics, a maximum efficiency will usually be reached somewhere in this range. All that is required are some slurry pumps, the slurry to be separated and the banks of spirals with a feed distributor.

 

Slurry is pumped to the top of the spiral (typically 13' to 15' from the floor), and it enters a feed distributor that evenly distributes the feed to each spiral concentrator. The design and shape of the spiral make it work, when combined with gravitational acceleration. As the slurry travels the spiraling path down the spiral, mineral grains settle and start sorting according to size, density and to a lesser extend shape. Low density particles are carried with the bulk of the water towards the outside of the spiral (perimeter), while particles with the greatest density migrate towards the inside of the spiral.

5. Structure

Glass fiber reinforced plastic spiral chute consists of feeder evenly separator, feed trough, spiral groove, gathered and slot bracket interceptor tank six parts.

1. Channel steel support  2. Feeding box  3. Helical sluice

4. Product separator  5. Collector  6. Distributor

6.Technical specification:

Model		5LL—1200	5LL—900	5LL—600	5LL—400
Outside DIA(mm)		1200	900	600	400
Pitch(mm)		900,720,540	675,540,405	450,360,270	240,180
Pitch DIA Ratio(P/D)		0.75,0.6, 0.45	0.75,0.6, ,045	0.7,0.6,0.45	0.6,0.45
Lateral Slope(°)		9o	9o	9o	9o
Maximum Installation Spiral		4	4	3	2
Feed Size(mm)		0.3—0.03	0.3—0.03	0.2—0.02	0.2—0.02
Feed Density (%)		25—55	25—55	25—55	25—55
Capacity(t/h)		4—6	2—3	0.8—1.2	0.15—0.2
External Size	Length(mm)	1360	1060	700	460
	Width(mm)	1360	1060	700	460
	Height(mm)	5230	4000	2600	1500
Weight(kg)		600	400	150	50