Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering 2017-03-23T09:50:31+00:00
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Control ​magnetite loss in Coal (6 replies)

Bill Rico
1 year ago
Bill Rico 1 year ago

Am looking for some possible way to control magnetite loss in a coal beneficiation plant using heavy medium bath circuit for beneficiation.

1.Loss through product.

2.Loss through magnetic separator.

3.Loss due to overflow of dilute medium tank and bath.

4.Loss due to leakage from pump and pipe lines. Please suggest possible way of magnetite loss from the circuit.

Dizzy Flores
1 year ago
Dizzy Flores 1 year ago

Do you pump the overflows and leaks back to the process? If yes, then the discharges from the process will be the products (floats and sinks) and magnetic separator, isn't it?

Bill Rico
1 year ago
Bill Rico 1 year ago

Yes to both questions.

Zander Barcalow
1 year ago
Zander Barcalow 1 year ago

Do systematic Planning and start discussing how to control magnetite loss with your superior and subordinates and maintenance team. And plan how to reduce above loss. That is how it could be controlled. I also suggest don't put unnecessary Magnetite in fresh feed. Put Specific Gravity of cut under control. Which helps in controlling Magnetite loss. Try this. I have done same to control it.

Carmen Ibanz
1 year ago
Carmen Ibanz 1 year ago

Most of the answers are contained in your question itself.

1. For "Loss through product" please take samples of the clean coal, reject and middling for laboratory test by thorough washing and determine the .magnetite content. Repeat the test after suitably changing the settings of the rinsing screen, such as spray water rate, screen vibration etc.

2. For "Loss through magnetic separator" similarly take the samples of non-magnetic product and determine magnetic content in the laboratory.

.

3. There should be no "Loss due to overflow of dilute medium tank and bath" if the overflows are pumped back into the dilute media sump according the standard practice.

4."Loss due to leakage from pump and pipe lines" is difficult to assess even with careful material balance computations. Please try to follow the best practices for minimizing the leakages.

Marshal Meru
1 year ago
Marshal Meru 1 year ago

The through systematic analysis of each stream suggests is the right way to go. Once you know where the loss occurs, you can modify that process to limit or stop the loss of Magnetite.

Bill Rico
1 year ago
Bill Rico 1 year ago

Yes sir, first of all I am analysing the possible routs of magnetite loss from a heavy medium bath coal beneficiation plant and after wards try to reduce this by taking possible corrective action.

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