Quarried limestone is crushed, screened
and washed in order to remove impurities prior to the calcination
process in the production of quicklime, or to meet the requirements
of the customer; the construction industry, cement, iron and
steel, glass making, paper, sugar refining or one of the many
other industries using limestone as a raw material.
MCT 300 moisture measurements enable the rejection of the
finer wet impurities, such as clay, sand and iron-bearing
minerals, from the crushed limestone. In addition, the MCT
300 is used to determine the moisture content of the finely
crushed limestone exiting the secondary crusher, and dryer
- if one is employed. Moisture needs to be monitored to ensure
corrective measures can be taken to prevent blockages from
occurring within the Screeners, as well as to ensure the levels
satisfy the customer’s specification.
Limestone Production
Limestone is quarried or mined rock. The processed material
is crushed and transported across sizing screens whereupon
it is saturated with water to remove unwanted material before
storage and transportation, or further processing.
Measurement Locations
1. Over a conveyor before the final crusher (0-5% moisture)
to enable elimination of impurities.
2. Above a conveyor exiting the final crusher or dryer (0-1%
moisture).
Gauge Installation
The gauge should be positioned 6-15” from the product.
Product flow should be continuous and of sufficient depth
that the transporting medium is not seen by the gauge. If
flow is discontinuous, a gating option can be used to enable
measurement only when product is viewed. |
