Cement & Quarry Application
Control raw mix chemistry — before it reaches the kiln
From the quarry face to the finish mill, cement quality depends on consistent raw material chemistry. ETI online analyzers deliver real-time elemental data directly on the conveyor — so operators can correct the mix before off-spec material reaches the next stage.
The Challenge
Lab analysis tells you what was fed. Online measurement tells you what's feeding now.
Cement raw mix control depends on knowing the elemental composition of raw materials as they enter the process. Traditional sampling and lab analysis introduce delays of hours — by which time tons of off-spec material may already be in the raw mill or pre-heater.
ETI online analyzers measure the full material stream continuously on the conveyor belt, reporting updated results every minute. Process engineers see chemistry changes as they happen and can adjust feed rates or blend proportions before the kiln is affected.
From Quarry to Kiln
Continuous chemistry data at every process decision point
Continuous measurement can support decisions at key points throughout the cement production chain — from quarry blending to kiln feed.
At the quarry face
Measure raw material chemistry as material leaves the crusher. Direct high-grade and low-grade material to separate stockpiles based on measured CaO and SiO₂ content.
At storage & pre-blending
Monitor chemistry entering and leaving pre-blending stockpiles. Know the composition of each pile before committing to a raw mix recipe — reducing the risk of kiln feed excursions.
At the raw mill feed
Use real-time elemental data to proportion raw materials and correctives to hit target lime saturation factor, silica ratio, and alumina ratio before grinding.
At quality control
Confirm that kiln feed chemistry meets specification continuously. Respond to raw mix deviations before they affect clinker quality, free lime, or kiln stability.
ETI Instruments for Cement & Quarry
The right instrument for your measurement point
ETI offers instruments for elemental analysis, material weighing, and high-speed sorting — each suited to a different point in the cement and quarry process.
Model 730 FSEA
The Model 730 FSEA uses PGNAA technology to measure the full elemental composition of raw materials on the belt — CaO, SiO₂, Al₂O₃, Fe₂O₃, MgO, and more. The primary instrument for raw mix control in cement production.
- CaO
- SiO₂
- Al₂O₃
- Fe₂O₃
- MgO
- SO₃
- K₂O
- Na₂O
- TiO₂
- Moisture
Model 500 Belt Scale
The Model 500 Nuclear Belt Scale measures material weight and flow rate continuously on the conveyor — providing the tonnage data needed to proportion raw mix feeds accurately alongside elemental analysis.
- Material weight (tons/hour)
- Cumulative tonnage
- Belt speed
Model 2000 Sort Gate
The Model 2000 Sort Gate diverts material at high speed based on measured grade or composition — enabling quarry operators to separate high-grade limestone from waste or low-grade material in a single pass.
- High-speed diversion
- Grade-based sorting
- Reject stream separation
- Continuous operation
Where ETI Analyzers Are Used
Applications across cement and quarry operations
Limestone quarries & crushing
Measure run-of-quarry chemistry on the primary conveyor. Direct high-CaO material to the cement feed stockpile and lower-grade material to aggregate or waste. Reduce dilution of premium limestone reserves.
Cement raw mix & kiln feed
Control raw mix proportioning in real time. Use continuous elemental data to adjust feed rates of raw materials and correctives — maintaining target lime saturation factor and silica ratio without waiting for lab results.
Aggregate & minerals processing
Monitor product chemistry and grade on the conveyor to confirm specification compliance before loadout. Use sort gate technology to separate on-spec and off-spec material streams at production rates.
Tell us about your cement or quarry application
Our engineers can help you identify the right measurement point and instrument for your operation. Most inquiries receive a response within one business day.