Presentation of a Typical Cyclone Plant

The Coal Washing Process– a typical Dense Medium Cyclone Plant

Dry Magnetite powder is mixed with water and pumped into the magnetite circuit. A sump containing the suspension at the required density is known as the Correct Medium Sump.

Raw Coal from the Mine is ordinarily crushed to -50mm and is then delivered to a desliming screen where the fine coal (-1.4mm typ.) is rinsed off and is sent to the fine coal and ultrafine coal circuits.

The 50 x 1.4mm is mixed together with the magnetite suspension from the Correct Medium Sump, and is pumped to the Dense Medium Cyclone(s) for separation.

Once separated, the Product plus the Reject report to Drain & Rinse screens in order to recover the magnetite. On the first part from the screen, magnetite is drained and reports back to the Correct Medium sump for re-use in the circuit. On the second part from the screen, magnetite adhering to the coal particles is rinsed off with water from the approach. This rinsed medium reports to a Dilute Medium sump from where it is pumped to Magnetic Separators that recover the magnetite and bleed fine coal out in the system.

Concentrated magnetite from the Magnetic Separators (RD 2.0 typ.) typically reports to an Overdense Sump from where it is distributed into the required circuit.

Installation and debugging of sand washer

1. Motor should outfit rain shelter to protect equipment from creep age.

2. Sand washer should be installed on the back of vibrating screen. The rotary direction must strictly according to the requirement.

3. Check every connective bolt has been fastened before trial run.

4. Check every movable part has been lubricated well before trial run.

5. Drive belt pulley run by man before trial run. Make sure there are not any blocks in the approach of working, and then user can carry on blank test. During two hours there are not any striking, pulley swinging and bearing loosen occur along with the bearing temperature rise cannot exceed 35 centigrade. If the above trouble occurs, please stop machine immediately and check it.

6. The machine should be installed on the reinforced cement. Beside this, machine user need to build a cement sedimentation basin to deal with the waste water. The waste water can be reused after precipitation. These techniques not only meet the environmental requirement but also reduce the sand’s cost.

7. Because this machine’s working place and conductor supplies are contacted with water, so users must guarantee the lead is insulated. slag crushing plant

Magnetite Losses

Magnetite losses are generally expressed in kilograms of magnetite per tonne raw coal processed (kg/t ROM), although it is becoming more common to express losses in terms of kilograms of magnetite per dry coarse coal feed (kg/t dccf).

Modern coal plants usually have consumption in the order of 0.5kg/t ROM.

Losses of magnetite occur in four main areas: With Product Coal, With Reject material, Magnetic Separator Effluent, Leaks & Spillages

As magnetite costs can run into the million of dollars per annum, it is important that the Coal Method Engineer pays attention to this area in the procedure. Martin & Robson, as a reputable magnetite supplier, ensures great attention is paid during magnetite processing.

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