Building
Materials
MoistScan® online moisture sensors are ideally suited for use in the
manufacture of many building materials. These
include:
• Panel board
• MDF board
• Fiber (Fibre) board
• Clays
• Bricks
• Cement and Concrete
• Plaster board
• Charcoal
The production of building products generally involves the mixing of a
variety of raw materials with bonding agents according a strict
formulation. A typical use of MoistScan is for real time
moisture analysis of the incoming feeds so as to calculate the dry tonne
equivalents of each raw material. This way mix ratio's can be more
tightly controlled. In the manufacture of many building products
such as bricks the mix is forced through a die before being extruded
then cured in a kiln or dryer. Here MoistScan online microwave
moisture meters can be used to monitor the moisture content of the
extruded product as it enters and exits the kiln. Integrated with
a PID controller the resident time of the extruded brick can be
regulated so as to achieve the desired level of moisture in the end
product.
The particular advantage of MoistScan technology over near infra red
(NIR) online moisture sensors in materials processing in the building
industry is the the ability of MoistScan to measure the moisture
throughout the entire profile of the product from top to bottom.
NIR is limited to measuring on the surface layer of the material which
is typically not representative of the total moisture in the product.
Examples of applications
| Building Product
Manufacturer -
Victoria, Australia |
Instrument:
Material:
Installation:
Moisture:
Purpose: |
MA-500
Clay Blends
On fine clay line just prior to extrusion
5 - 9%
Feed forward control of water addition
|
 |
| Building Product
Manufacturer -
Australia |
Instrument:
Material:
Installation:
Moisture:
Purpose: |
MA-500(2)
Clay Blends
1. On conveyor measuring moisture in clay blend feed
prior to wet pan mixer
2. On conveyor downstream of wet pan mixer
8 - 15%
Feed forward and feedback automation of water addition
to wet pan mixer. Analyser controls a water addition
valve to achieve pre determined moisture content of
16.7%. The analyser downstream of the wet pan is used
for finetuning feedback to initial analyser set point.
|
 |
| Building Product
Manufacturer -
USA |
Instrument:
Material:
Installation:
Moisture:
Purpose: |
MA-600
Fibreboard
On wet board conveyor
50 - 60%
To control board press to achieve optimum moisture
resulting in reduce energy costs of drying
|
 |
Contact us for further information
