Magnetised water trial

Scale Busta – the Aussie-built scale buster Magnetic Scale Eliminator – Magnetised water trial at Mandalong

Objective

Test the effectiveness of magnetic water conditioning on the removal of Scale build up inside the water extraction pipes used in underground mines.

Background

Water in underground mines is typically saturated with calcium and magnesium among other elements. It has been shown in some trials that these salts form crystals of calcium sulfate and calcium silicate. These crystals precipitate out and combine to form deposits on the pipe walls. These build up and eventually significantly reduce the flow area in the pipe. Some tests have shown that after the salt saturated water is exposed to magnetic fields of sufficient field strength and gradients the treated sample contains the crystals of calcium carbonate and calcium sulfate as the dominate species. The before and after treatment samples are therefore physically different. It has also been observed that the crystal formed after magnetic treatment tends not to deposit on the inner lining of the pipe. This difference in properties has resulted in removal of scale build up in the pipe.

Apparatus

The overall combined length of the test unit is 6.5 metres allowing for straight replacement of a standard length of pipe. The Scale Busta Magnetic Scale Eliminator is contained within a Diameter 280 x 300 mm long stainless steel cylinder fitted in centre and concentric to a 4 inch diameter stainless steel pipe 500 mm in length. The 4 inch stainless steel pipe is fitted with Victaulic Shouldered System on either end. The conditioner is then attached to two 6 to 4 inch reducers with Victaulic fittings on either end. The reducers are each 300 mm in length. This assembly is then combined with a 5.4 metre length of 6 inch steel pipe again with Victaulic fittings. The 5.4 metre length of 6 inch steel pipe is made from 2 sections one 500 mm in length the other 4.9 metre. The individual sections will be assembled on site for ease of transportation.

Pre- Installation Procedure

  1. Identify an appropriate location for installing the Scale Busta Magnetic Scale Eliminator. This location should have easy access as it will be required to visit the site on a regular basis for observation and recording progress.

  2. Identify an appropriate location for carrying out observations and tests. This location should have easy access as it will be required to visit the site on a regular basis for observation and recording progress. If necessary a section of pipe will need to be removed at time of observation.

  3. Identify an appropriate location for strainer. We expect there to be a number of scale fragments that will dislodge in the pipe. The downstream effects of these fragments must be considered. We may need to consider installing a strainer for the discharge of the pipe so that we can collect any calcium chips that will be discharged. It may also be necessary to flush scale fragments from elbows and low angle joints. This requirement is simply dependent on the pumps ability to push the fragments down line.

Installation Procedure

  1. Take all individual components to the site.

  2. Assemble sections fitting Victaulic clamps to form the desired 6.5 metre overall length.

  3. Remove section of pipe from existing water mains.

  4. Install Scale Busta Magnetic Water Conditioning assembly.

  5. Note condition of removed pipe section. Take photo with ruler to monitor scale depth.

Testing and Observation

  1. Remove section of pipe from the test section of existing water mains. Note condition of removed pipe section. Take photo with ruler to monitor scale depth.

  2. Return to testing site after 1 week. Repeat step 1.

  3. Return to testing site after 2 week. Repeat step 1.

  4. Return to testing site after 2 week. Depending on results Repeat step 1.

Comments on Scale Busta test results

Victor

See attached photo’s.  The calcium that lined the pipes on installation was set hard like concrete.  When we have opened the pipes the calcium had softened and could easily be wiped off with your finger see photo.  One of the other photo’s shows the chips of calcium that have dislodged from the pipe at the discharge point and the calcium build up has reduced.

This is an excellent result and you should be very excited.

Regards,
Shayne A. Gillett
Services Superintendent

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