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{{short description|Mixture of solids suspended in liquid}}{{jargon|date=September 2022}}{{for|the geographical place|Slurry, North West}} File:Potato starch slurry.jpg|thumb|Potato starchPotato starchA slurry is a mixture of denser solids suspended in liquid, usually water. The most common use of slurry is as a means of transporting solids or separating minerals, the liquid being a carrier that is pumped on a device such as a centrifugal pump. The size of solid particles may vary from 1 micrometre up to hundreds of millimetres.The particles may settle below a certain transport velocity and the mixture can behave like a Newtonian or non-Newtonian fluid. Depending on the mixture, the slurry may be abrasive and/or corrosive.

Examples

Examples of slurries include:

• Cement slurry, a mixture of cement, water, and assorted dry and liquid additives used in the petroleum and other industriesWEB,weblink Shlumberger: Oilfield glossary, 2012-05-06, 2012-05-31,weblink" title="web.archive.org/web/20120531130250weblink">weblink dead, WEB,weblink Rheonova : Measuring rheological properties of settling slurries, 2013-11-30, 2020-04-18,weblink" title="web.archive.org/web/20200418021320weblink">weblink live,
• Soil/cement slurry, also called Controlled Low-Strength Material (CLSM), flowable fill, controlled density fill, flowable mortar, plastic soil-cement, K-Krete, and other namesWEB,weblink Portland Cement Association: Controlled Low-Strength Material, 2012-05-06, 2013-10-17,weblink" title="web.archive.org/web/20131017174048weblink">weblink live,
• A mixture of thickening agent, oxidizers, and water used to form a gel explosiveWEB,weblink IRing - Creators of Aegis, an underground drill & blast planning software that helps a mine improve its effectiveness and efficiency, 2020-01-02, 2020-08-07,weblink" title="web.archive.org/web/20200807045312weblink">weblink live,
• A mixture of pyroclastic material, rocky debris, and water produced in a volcanic eruption and known as a lahar
• A mixture of bentonite and water used to make slurry walls
• Coal slurry, a mixture of coal waste and water, or crushed coal and waterweblink" title="archive.today/20130201031501weblink">Red Valve Company: Coal Slurry Pipeline
• Slip, a mixture of clay and water used for joining, glazing and decoration of ceramics and pottery.
• Slurry oil, the highest boiling fraction distilled from the effluent of an FCC unit in an oil refinery. It contains a large amount of catalyst, in form of sediments hence the denomination of slurry.
• A mixture of wood pulp and water used to make paper
• Manure slurry, a mixture of animal waste, organic matter, and sometimes water often known simply as "slurry" in agricultural use, used as fertilizer after aging in a slurry pit
• Meat slurry, a mixture of finely ground meat and water, centrifugally dewatered and used as a food ingredient.
• An abrasive substance used in chemical-mechanical polishing
• Slurry ice, a mixture of ice crystals, freezing point depressant, and water
• A mixture of raw materials and water involved in the rawmill manufacture of Portland cement
• A bolus of chewed food mixed with salivaRheonova : Measuring food bolus properties {{webarchive|url=https://archive.today/20131130092240weblink |date=2013-11-30 }}
• A mixture of epoxy glue and glass microspheres used as a filler compound around core materials in sandwich-structured composite airframes.

Calculations

Determining solids fraction

To determine the percent solids (or solids fraction) of a slurry from the density of the slurry, solids and liquidWills, B.A. and Napier-Munn, T.J, Wills' Mineral Processing Technology: an introduction to the practical aspects of ore treatment and mineral recovery, {{ISBN|978-0-7506-4450-1}}, Seventh Edition (2006), Elsevier, Great Britain where In aqueous slurries, as is common in mineral processing, the specific gravity of the species is typically used, and since specific gravity of water is taken to be 1, this relation is typically written: even though specific gravity with units tonnes/m3 (t/m3) is used instead of the SI density unit, kg/m3.

Liquid mass from mass fraction of solids

To determine the mass of liquid in a sample given the mass of solids and the mass fraction:By definition therefore and then and therefore where

Volumetric fraction from mass fraction

Equivalently and in a minerals processing context where the specific gravity of the liquid (water) is taken to be one: So and Then combining with the first equation: So Then since we conclude that where

See also

• Grout
• Slurry pipeline
• Slurry transport
• Slurry wall

References

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External links

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• Bonapace, A.C. A General Theory of the Hydraulic Transport of Solids in Full Suspension
• JOURNAL, 10.1016/j.expthermflusci.2012.11.003, Experimental study of hydraulic transport of large particles in horizontal pipes, Experimental Thermal and Fluid Science, 45, 187–197, 2013, Ravelet, F., Bakir, F., Khelladi, S., Rey, R., 55554454,weblink
• Ming, G., Ruixiang, L., Fusheng, N., Liqun, X. (2007). Hydraulic Transport of Coarse Gravel—A Laboratory Investigation Into Flow Resistance.

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