Online particle size analyzer

Rise online particle size analyzer (laser method)

There are two types of modern detection methods: offline and online. Offline detection involves taking samples on site at regular intervals (such as one hour) and then analyzing them on laboratory analytical instruments. This method has the disadvantages of small sample sizes (only measuring a few grams), insufficient representativeness, long sampling intervals, and delayed measurement results compared to production, resulting in a serious lack of guidance for production and inability to meet the requirements of modern technological development and production. Online detection is the direct monitoring of product particle size distribution and trend changes in the production pipeline, while transmitting the monitoring results to the central control room or the customer's DCS and PLC central control system.

Particle size detection is an important indicator pursued by many powder industries for product quality. At present, there are many detection principles at home and abroad, among which laser detection is favored by the market for its fast speed, high accuracy, and strong repeatability. Rise online particle size analyzer is a set of online particle size monitoring system specially launched for the needs of industrial sites. It tracks the particle size distribution and change trend of product particles in the product conveying pipeline continuously, quickly, timely, and realistically for 24 hours, providing users with modern scientific monitoring tools for the stability and continuity of product quality.

Online particle size detection is divided into dry and wet methods based on sample morphology. The Rise online particle size analyzer is a mature combination of design and technology. Among all real-time particle size analyzers, the Rise online particle size analyzer is the simplest to operate, portable, durable, and performs the best, but its cost is only a small part of that of competing systems. Has the following characteristics and advantages:

Runzhi Rise-Online particle size analyzerWorking Principle:

RiseThe online particle size analyzer adopts the full range Mie scattering theory, fully considering the optical properties such as refractive index of the measured particles and dispersed media. Based on the changes in scattering intensity of particles of different sizes at various angles, the particle size distribution data of the particle group is reconstructed.

The data calculation of particle testing is generally divided into two methods: unconstrained fitting inversion and constrained fitting inversion. Constrained fitting inversion assumes that the particle population follows a certain distribution pattern before calculation, and then uses this pattern to invert the particle size distribution. This type of operation is relatively simple, but due to the inevitable deviation between the assumptions made in advance and the actual situation, the test data obtained by constrained fitting cannot truly reflect the actual particle size distribution of the particle group.

Unconstrained fitting inversion means that no assumptions are made about the particle population before testing, and the particle size distribution of the particle population is accurately calculated directly through light intensity. This calculation is based on reasonable detector design and granularity grading, which puts high demands on the equipment itself. The Rise online particle size analyzer adopts a non-uniform cross 3D fan-shaped matrix detector array and reasonable particle size grading, which can accurately measure the particle size distribution of particle groups.

Runzhi Rise OnlineCharacteristics of online particle size analyzer:

1Measurement range: 0.02-1200 microns (customized according to actual requirements)

2Accuracy error:<± 1% (standard substance D50);

3Repeatability deviation:<± 1% (standard substance D50);

4Easy to install and integrate with other systems, lightweight, and durable;

5Flexible and variable dilution system, capable of detecting samples and returning them to the main production process;

6Compliant with ISO13320, it can fully utilize the "laboratory system" performance of laser diffraction;

7Easy to maintain and affordable * technology.

8It can be operated offline and online, unsupervised, and automatically set to online operation. It can also be set to measure at specific times.

9Intuitive graphical user interface software for expert systems. Specific indicators can also be output in EXCEL format according to user requirements to generate specific indicator time curves.

（Runzhi Rise-）

RiseThe online detection system can be applied to the following industries:

calcium carbonate、food、lotion、Coatings and pigments、medicine、*、Crystals, etc.

Testing Process（Runzhi Rise-）

1. Open the online particle size analyzer through the computer. Adjust the feed ball valve and compress to the appropriate position, adjust the compressed air to the appropriate pressure (only * setting).

2. By setting the detection interval time through the operation keyboard under the display screen, the system will automatically detect the particle size distribution of the slurry in the pipeline (as shown in Figure 2). As the grinding time increases, it can be observed that the particles gradually decrease in size (as shown in Figure 3). The results of each detection can be automatically recorded, and feature values such as D10, D50, D90 can be directly displayed (as shown in Figure 4). Open each record to view the corresponding granularity distribution curve (as shown in Figure 5).

3. When the customer's granularity requirements are met, stop testing and proceed with material release or next steps.

4. All operational steps are controlled through software and connected to the process control system on the production line through a PLC control system, achieving closed-loop control. After completing one round of particle size detection, the sample measuring tank is emptied by a centrifugal pump and automatically rinsed and cleaned for the next round of particle size detection.

RiseOnline detection system configuration:

1. Wet online detection system configuration:

1. One set of host and control system;
2. One computer;
3. Purified water (dosage depends on the number of tests);
4. Sampling tube (customized according to site conditions);
5. Return pipe (customized according to site conditions).

1. Configuration of dry online detection system:

1. One set of host and control system;
2. One computer;
3. One oil-free and waterless air compressor;
4. One vacuum cleaner;
5. One set of cyclone separator;
6. Sampling tube (customized according to site conditions);
7. Return pipe (customized according to site conditions).