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A brief introduction about the block production Line

Time: October 14th,2022  |  Source: HF Machinery

A loader pours some raw materials (rubble, stone, sand, limestone, metal tailing, fly ash or solid construction waste) into the aggregate hopper. 

There’s an aggregate weighing batcher (under the hopper) weighing the materials accurately and automatically. 

Sensors are equipped with the weighing batcher.


The skip hoister takes the materials to the mixer.

In the meantime, put cement into the mixer.

The mixer mixes the cement and aggregate (wet concrete) automatically.

All the ratio of water and cement is controlled by the computer precisely and automatically (software Siemens PLC).

After mixing, the wet concrete is shipped to the storage hopper of the block making machine by the wet concrete conveying belt.

First, Wet concrete goes to the filler box.

Second, The up mould comes down to compress the wet concrete in the mould. The vibration table is vibrating.

After the vibration, the up mould comes up (demoulding).

Then the fresh blocks are well formed on the pallets.

There are selfcentering and positioning devices to ensure the pallets won’t be moved or swayed.

Pls note that the pallets are moved forward automatically on the vibration table as sensors and positioning devices can control all the movement .

Wet blocks (on the pallets) are conveyed by the green block conveyor.

Then a mobile stacking device stacks the pallets with wet blocks layer by layer. A forklift comes to pick up all the blocks for curing.

The normal curing condition is that the temperature is from 34 to 37 degree Celsius and the relative humidity reaches 91%.

The curing time in the curing kiln or shed is for 8-12 hours.

After the first curing,the cured blocks are stacked manually to sent to the outside for second natural curing.

The second natural outside curing period is for 28 days. In such a condition, the blocks meet the ideal requirement for ideal density and strength.

However, the second natural outside curing time can be shorter due to hot weather.

For example, Our Indian customers cure the blocks outside for only 7-8 days.

The formula, ratio and the weight are all controlled by the computer (Intelligent management and control system).

The density of the blocks can be changed according to different ingredients and raw materials.

You can check and adjust the data through computer.

Qingdao HF machinery Co.,Ltd have a professional senior engineer team here to provide solutions for you.

If you have any questions, you are always welcome to contact us.

Thank you.

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