Jaykrishna Magnetics Private Limited

GIDC, Rajkot, Gujarat

The principle of the Eddy Current Separator is fairly straightforward. Basically, a rotor comprised of magnet blocks, either standard ferrite ceramic or the more powerful rare earth magnets depending on application, are spun at high revolutions (over 3000 rpm) to produce an eddy current. This eddy current reacts with different metals, according to their specific mass and resistivity, creating a repelling force on the charged particle. If a metal is light, yet conductive such as aluminum, it is easily levitated and ejected from the normal flow of the product stream making separation possible. Separation of stainless steel is also possible depending on the grade of material. Particles from material flows can be sorted down to a minimum size of 3/32" (2mm) in diameter. There is no question that Eddy Current Separators have been a crucial development for the recycling industry.

In a world of depleting natural resources the race is on to find faster, cheaper, more efficient ways of reclaiming and recovering raw materials, as well as improving the purity and reducing the risk of contamination during their processing.

One of the more recent and exciting innovations in material separation is the non-ferrous Eddy Current Separator and how it is revolutionizing efforts to reduce waste and damage to the environment by recovering valuable non-ferrous metals from municipal and industrial refuse.

Sorting and separating ferrous metals using magnetized systems has been standard practice for many years. Recovering non-ferrous metals, however, was a labor intensive, costly and a time consuming exercise, only feasible from bulk materials like incinerated refuse and fragmentized car scrap. It meant metal mixes, such as brass, copper, aluminum and steel were relatively worthless as a mixture and were often landfilled. It was like pouring money and vital natural resources down the drain.

The Eddy Current Separator is able to separate and recover aluminum and other non-ferrous metals from household, industrial and incinerated waste, including inert plastics and other materials. It is able to separate metals from scrap, and remove metallic particles and contaminants from glass and other substances. In fact, Eddy Current Separators offer a cost effective method of recovering up to 95% of valuable material from rubbish and waste, grading precious metal concentrates for further processing. It also improves the purity of non-ferrous auto scrap up to 85-95%, maximizing the speed and efficiency of recovery and increasing profits.

These systems use the latest and most effective magnetic circuits to produce strong eddy current forces, which maximizes efficient separation. Also incorporated are proven design features, such as quick and easy machine adjustments, single source dependability, and energy efficiency.

Function:

The JAYKRISHNA eddy current metal separator Consists of a belt conveyor with two tail pulleys. The driving drum on the feeding side is driven by a geared motor, the belt speed can be electronically adjusted by continuous control. An extremely strong, fast rotating permanent magnetic system is located in the head pulley. The specific geometry of the magnetic system generates a pulselike magnetic field. The number of revolutions of the magnetic field is also continuously adjustable and can thus be adapted to the individual cases. The whole machine is a modular construction on a base frame (feeder, Eddy Current Separator, splitter unit) which can be easily transported and installed. An extensively equipped control makes possible an optimum adaptation to the respective charging material, thus ensuring best separation results.

The frequency of the ECS rotor is critical to ensure that good separation is achieved. This is why we have developed a rotor specifically for can sorting that has the maximum number of poles and rotates at the optimum speed to give the best and most selective separation of aluminum cans.

The wet drum separator NTS is used to remove very fine magnetisable components from low concentration, low-viscosity liquids. The NTS is intended for use in the metal processing industry and for the treatment of preconcentrates extracted from the STEINERT high gradient magnetic filter HGF. Around 90 % of the grain sizes ranging from 1 m to 1000 m can be separated as sludge. Features such as stainless steel housing and powerful neodymium iron boron magnets are standard.

General Princip :
The liquid flows through a semicircular separating chamber beneath a stainless steel drum to which the magnetisable particles are attracted. The strong, high-gradient magnetic field is created by a cylinder consisting of permanent magnetic discs positioned within the drum. These special permanent magnets generate particularly high field gradients which are necessary for successful separation, as is the need with all magnetic separators.
For recovering magnetic / ferrosilicon in dense media plants and iron ores wet drum separators are primarily used. They remove contaminants from the product stream, increasing product purity and plant productivity. In the applications where the product purity is most essential the wet drum separators can use powerful rare earth magnets which can remove very fine and weak contaminants even from dense materials.

How it Works :
The liquid flows through a semicircular separating chamber beneath a stainless steel drum gather is a semicircular separating chamber through which the liquid flows. The cylinder consisting of permanent magnetic discs are positioned within the drum to which the magnetizable particles are attracted. By rotating the drum, the filter cake is lifted out of the slurry and the magnetic field.

Unbalance Vibrating Motor is used as drive for vibrating Machine for bin discharging product feeding, screening etc. Different type of material can be handle such as Minerals, Refractories, Dyes, Chemicals, Intermediates, Food Product etc.

The Vibration Motor are available in 3000, 1440, 980 & 750 RPM and from 1HP to 5HP.

MOTORISED VIBRATORY FEEDER:

JAYKRISHNA manufactures Vibration motor base feeders, which utilize the forces set up by two synchronised counter-rotating, heavy duty vibrator motors. At Two points in each complete revolution, the centrifugal forces of each vibrator coincide, resulting in a linear force.Our feeders are custom built to meet any application needed. Feeders are built rugged to produce tje consistent flow rates and trouble free operation needed for efficient processing. The Feeder can be designed wither Base Mounted or Suspension / Hanging Type.

APPLICATION:

• Liners can be provided for special application e.g. Feeding of ORE & Pellets in the Blast Furnace.
• Enclosed Body for feeder can be manufacture for Extracting Minerals for Storage Bins and Conveying to kilns.

Technical Specification:

• The Mechanical Vibratory Feeder consist of a tray made out of Mild Steel.
• The body housing of the Vibrator is made from Heavy duty M.S.Plates.
• As the Motor get energised the Vibration sets the material in motion.
• The Vibration of the feeder will be controlled with the help of adjusting the loads of the motor.
• The Feeder will be mounted on Heavy Duty Spring Bar/Brakets or Base Mounting.