The Cement Fineness Negative Pressure Test Sieve can be used with a negative-pressure sieve analyzer for fineness testing of cement, fly ash, mineral powder, and other fine powdered materials.

Cement Fineness Negative Pressure Test Sieve  

Model: TDBZS-150-0.08

I. Product Introduction

The Cement Fineness Negative Pressure Test Sieve is a dedicated accessory for cement fineness testing by the 80 μm sieve analysis method specified in GB 1345-91. It features a simple structure and is easy to use, making it suitable for routine cement fineness testing.

Reference Standards: ASTM C430, EN 196-6.

II. Instructions for Use

1. Place the fly ash sample for testing in a drying oven at a constant temperature of 105℃~110℃. Remove and cool to room temperature in a desiccator.

2. Weigh approximately 10g of the sample (accurate to 0.01g) and pour it onto a 45µm square-hole sieve. Place the sieve on the sieve holder and cover it with the sieve cover.

3. Connect the power supply and set the timer to 3 minutes to begin sieving.

4. After starting operation, observe the negative pressure gauge and ensure it stabilizes at 4000Pa~6000Pa. If the negative pressure is less than 4000Pa, stop the machine. Clean the dust collector before sieving.

5. During sieving, gently tap the sieve cover with a light wooden stick or hard rubber stick to prevent adsorption.

6. Sieving will automatically stop after 3 minutes. After stopping, observe the residue. If particles are balled up, stick to the sieve, or fine particles are deposited on the edge of the sieve frame, gently brush the particles away with a soft sieve. Set the timer switch to manual position and sieve for another 1~3 minutes until the sieve is completely separated. Collect the residue in the sieve and weigh it accurately to 0.01g.

III. Technical Features

1. Simple and Practical Design: The test sieve features a simple structure and is convenient to install, operate, clean, and maintain.

2. Stable Sieving Performance: The precision stainless steel mesh provides consistent screening performance and helps ensure reliable cement and powder material fineness testing.

3. Good Sealing Performance: The sieve is designed to work with a negative-pressure sieve analyzer, helping reduce material leakage and dust dispersion during testing.

4. Easy Residue Collection: The sieve allows convenient collection and weighing of material retained on the mesh for subsequent calculation and reporting.

5.  Durable Construction: The test sieve is suitable for repeated laboratory use and routine quality control applications.

IV. Applications

It is suitable for applications in:
Cement manufacturing plants;

Construction material laboratories;

Concrete and mortar laboratories;

Quality inspection and testing centers;

Universities and research institutions;

Construction and engineering companies.

V. Precautions

1. Ensure that the test sieve is clean and dry before each test.

2. Check that the sieve cover and sieve holder are properly fitted before operation.

3. Do not use sharp tools to clean the sieve mesh.

4. Maintain the specified negative pressure during testing.

5. Handle the test sieve carefully to prevent deformation or damage to the mesh.

6. Store the sieve in a clean, dry place after use.