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(Not) Working in Lime
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<blockquote data-quote="BC" data-source="post: 579054" data-attributes="member: 67"><p>The quality of limestone sold in Texas is quite variable. In simpler terms, all limestone</p><p>is just limestone. For the most part agricultural limestone is a by-product from the manufacture</p><p>of cement, road base material, calcium oxide or other similar goods.</p><p>The quality of limestone is most often measured by two factors. The first factor is the</p><p>Neutralizing Value (NV) which is also known as the Calcium Carbonate Equivalent (CCE). This</p><p>figure is achieved by mixing the limestone with a known amount of acid and then calculating</p><p>how much of the acid is neutralized by the limestone. The laboratories call this a titration</p><p>procedure. Pure calcium carbonate (CaCO3) is used as the standard with a Neutralizing Value of</p><p>100%. Some liming materials may contain significant amount of magnesium carbonate (MgCO3)</p><p>which can cause them to have a Neutralizing Value greater than 100%.</p><p>The second factor that determines limestone quality is particle size. Generally, the finer</p><p>the particles, the more efficient or reactive the limestone is. Particle size is measured by mesh or</p><p>sieve sizes, the larger the mesh number the smaller the particle size. Mesh size is the number of</p><p>openings per inch. A 60-mesh screen has much smaller openings than an 8-mesh screen. This is</p><p>what makes the difference between regular limestone and Super Fine limestone. The Super Fine</p><p>has much smaller particles size and therefore goes to work much faster.</p><p>There are some efficiency ratings depending on the fineness of particle size. The fineness</p><p>efficiency is multiplied by the Neutralizing Value to produce a single number which rates the</p><p>efficiency of limestone. That number is called the Effective Calcium Carbonate Equivalent</p><p>(ECCE). This is the number to look and ask for when purchasing limestone.</p><p>The ECCE makes it possible to to compare different qualities of limestone to dtermine</p><p>which is the best buy for the money.</p></blockquote><p></p>
[QUOTE="BC, post: 579054, member: 67"] The quality of limestone sold in Texas is quite variable. In simpler terms, all limestone is just limestone. For the most part agricultural limestone is a by-product from the manufacture of cement, road base material, calcium oxide or other similar goods. The quality of limestone is most often measured by two factors. The first factor is the Neutralizing Value (NV) which is also known as the Calcium Carbonate Equivalent (CCE). This figure is achieved by mixing the limestone with a known amount of acid and then calculating how much of the acid is neutralized by the limestone. The laboratories call this a titration procedure. Pure calcium carbonate (CaCO3) is used as the standard with a Neutralizing Value of 100%. Some liming materials may contain significant amount of magnesium carbonate (MgCO3) which can cause them to have a Neutralizing Value greater than 100%. The second factor that determines limestone quality is particle size. Generally, the finer the particles, the more efficient or reactive the limestone is. Particle size is measured by mesh or sieve sizes, the larger the mesh number the smaller the particle size. Mesh size is the number of openings per inch. A 60-mesh screen has much smaller openings than an 8-mesh screen. This is what makes the difference between regular limestone and Super Fine limestone. The Super Fine has much smaller particles size and therefore goes to work much faster. There are some efficiency ratings depending on the fineness of particle size. The fineness efficiency is multiplied by the Neutralizing Value to produce a single number which rates the efficiency of limestone. That number is called the Effective Calcium Carbonate Equivalent (ECCE). This is the number to look and ask for when purchasing limestone. The ECCE makes it possible to to compare different qualities of limestone to dtermine which is the best buy for the money. [/QUOTE]
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