Loss-on-ignition analyzer

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Product Overview

The ITECA Loss-on-Ignition Analyzer is an intelligent testing instrument specifically developed for the cement industry, enabling fully automated measurement of loss on ignition in raw meal, preheated raw meal, clinker, and cement. It is designed in accordance with the national standard GB/T 176-2017, “Methods for Chemical Analysis of Cement.” The device features a built-in six‑station high‑temperature furnace and desiccator, allowing simultaneous analysis of six samples. It integrates quantitative feeding, high‑precision weighing, high‑temperature calcination, automatic cooling, and data processing—fully automated throughout the entire procedure without any manual intervention. This thoroughly addresses the longstanding challenges of low efficiency, significant errors, and cumbersome operations associated with conventional methods, ensuring stable, reliable results that meet national standards.

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Core Testing Process

The entire equipment inspection process is fully automated, with a clear and traceable workflow. The specific steps are as follows:

Automatic Weighing and Loading: The robotic arm picks up the crucible from the crucible rack and places it at the weighing station. After the empty crucible is weighed, a precision dosing device, in conjunction with an electronic balance accurate to 0.0001 g, dispenses approximately 1 g of sample into the crucible while simultaneously recording the weighed mass.
High-temperature calcination: The robotic arm places the crucible lid on the crucible, then loads the crucible into the high‑temperature furnace to carry out the temperature‑rising calcination process, with the entire procedure executed automatically according to the preset program.
Rapid cooling: After calcination is complete, the robotic arm transfers the crucible into a desiccator. The desiccator is equipped with a forced-air cooler, a desiccant, and a temperature sensor, enabling the crucible to be rapidly cooled to room temperature.
Result Calculation and Cleaning: After cooling, the robotic arm returns the crucible to the weighing station for a second weighing, and the loss on ignition is automatically calculated from the weight difference. Once the measurement is complete, the robotic arm cleans the crucible, while the waste material is automatically collected by the dust‑removal system, and the crucible is placed back onto the crucible rack for future use.

Core Advantages

Fully automated operation, requiring no human intervention. From sample weighing, loading, and calcination to cooling, calculation, and cleanup, the entire process is seamlessly executed by a robotic arm in tandem with an intelligent system, eliminating human‑operator errors while mitigating the risks associated with high‑temperature operations.
Efficient and fast, with a short testing cycle. : The 6‑station design enables simultaneous measurement of six samples and supports both standard and rapid modes. In standard mode, the analysis takes one hour, while rapid mode requires only 20 minutes, significantly boosting testing efficiency.
Easy to operate with a high degree of intelligence. Equipped with a large touch screen and a graphical user interface for intuitive operation; supports customizable measurement settings and workflows, enabling a wide range of thermogravimetric experiments; features a network interface for remote control, data visualization, and automated data upload.
Precise and reliable, compliant with national standards. : The quantitative feeding device, in conjunction with a high-precision electronic balance accurate to 0.0001 g, exhibits a measurement repeatability error of less than 0.15%, delivering stable and reliable results that fully comply with the “GBT 176-2025 Methods for Chemical Analysis of Cement.”
Flexible adaptation with strong scalability It can be used as a standalone laboratory testing instrument or integrated into a fully automated laboratory system. It can also be combined with a hot raw meal sampling system to form an online decomposition‑rate analysis system, meeting the quality‑control requirements for raw meal decomposition rates in cement production.

Online Decomposition Rate Analysis System (Scalable)

The loss-on-ignition analyzer can be integrated with a hot raw meal sampling system to form an online system for monitoring the decomposition rate of hot raw meal. It is used to perform real-time measurements of the raw meal decomposition rate at the discharge chute of the final-stage cyclone in the cement preheater, thereby helping to optimize the kiln system’s thermal operating regime.

(1) System Composition (Modular Design, Configurable in Stages)

High-Temperature Piston-Type Hot Raw Material Sampler : Installed on the discharge pipe of the last-stage cyclone in the preheater, it can withstand temperatures up to 1100°C and samples at a preset frequency.
Sample air quenching device : It employs an air-cooling design, ensuring that the cold air does not come into contact with the sample and thus does not alter the sample’s properties.
Sample Delivery System : The quenched material sample is conveyed to the analyzer; pipeline or mechanical conveying equipment can be configured as required.
Loss-on-ignition analyzer : Directly installed beneath the sampling point, it performs fully automated sample analysis (the analytical procedure is as described above).

(II) System Advantages

Significantly increase the frequency of analyzing the decomposition rate of hot raw meal; measurement results can be transmitted in real time to the APC kiln expert optimization control system, enabling optimization of the decomposition furnace outlet temperature setpoint, stabilization of the kiln inlet decomposition rate, enhancement of thermal‑process stability in the rotary kiln system, and optimization of fuel consumption.

Core Technical Parameters

Rated voltage: 220 V; rated power: 5 kW.
The high-temperature furnace has a maximum temperature of 1,000 degrees Celsius.
The internal balance has a maximum capacity of 200 g and a precision of 0.0001 g.
Porcelain crucible, 30 mL capacity;
Six‑station design enables simultaneous measurement of six samples.
The measurement repeatability error is less than 0.15%.