Slurry Transport uses several methods: hydraulic conveying; conventional lean slurry conveying; and High Concentration Slurry Disposal (HCSD). The latter, HCSD, is a relatively modern approach, which is used to transfer high throughputs of fine fly ash

Fly ash

Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not rise is termed bottom ash. In an industrial context, fly ash usually refers to ash produced during combustion of coal...

 over long distances (>10 km) using high pressure diaphragm pumps with velocities of around 2 m/s. Ash disposal is simple as the ash solidifies easily and the system does not produce the waste water or leachate

Leachate

Leachate is any liquid that, in passing through matter, extracts solutes, suspended solids or any other component of the material through which it has passed....

problems which can often be associated with ash lagoons. Other slurries (e.g. liquid manure) can be transported by centrifugal slurry pumps.

Examples

Typical HCSD systems include the Clyde Bergemann solution designed to reduce water usage (up to 90% by weight), reduce ground and surface water pollution, reduce dust emission surrounding landfill site, increase disposal area working capacity and lower energy consumption.

External links

• CASE STUDY: Modern materials handling solution installed at Eraring power plant, Australia
• Landia Slurry Handling Solutions