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Semi-dry Gypsum Line
Semi-Dry Fully Automatic Gypsum Block Production Line
Water-to-gypsum ratio cut to about 30%, blocks go to the warehouse without drying or airing, and comfortably exceed JC/T 698-2010.
A semi-dry gypsum block line whose products need no drying or airing before packing and dispatch: hollow rate 52%, expressed density below 760 kg/m³, breaking load above 5,000 N, compressive strength above 5 MPa, softening coefficient above 0.7.
- Capacity
- Configured to your target output; block strength well above JC/T 698-2010
- Category
- Gypsum / AAC / Lightweight Panel Lines
- Customization
- Designed to your site and target output
- Warranty
- 12 months on main components
Product Description
Traditional phosphogypsum blocks are made by casting, which needs a high water-to-gypsum ratio, a long drying cycle and high cost. It is hard to run as a large-scale continuous process, struggles to serve engineering-project schedules, and makes poor use of industrial by-product gypsum. Cast gypsum is light, but the drying cycle is long, hardness and strength are low, the breakage rate in handling is high and market acceptance is limited.
The semi-dry process attacks all of those problems at once. The main raw material is building gypsum, with a small amount of a Qisheng-developed additive that adjusts the crystallisation and setting of the hydration reaction and the crystal nucleation. After a unique moulding method, the hydrogen bonds and crystal nuclei of the hydration reaction act together to raise the block strength. The key is lowering the water-to-gypsum ratio to about 30%.
At that ratio the hydration reaction is more intense than casting and the temperature runs about 10 °C higher, which shortens the drying cycle. The additive also delivers crystal conditioning, setting control and dispersion homogenisation so the reaction runs fully and normally. The result is that finished gypsum products can be packed and shipped without any drying or airing, cutting both cycle time and production cost.
Equipment design: unique layout, simple to operate, small footprint, fastest moulding speed, high output and a scientific, rational flow line. Features include a distinctive mixing pattern, secondary atomisation with intelligent sensing of the water addition, an accurate distribution system, coordinated compression ratio and pressure, one-button intelligent electronic start, high-pressure silent running, no drying requirement, and artificial-intelligence cubing and brick collection.
Application range is wide and includes hollow blocks of all kinds, composite strips, fireproof boards and paper-faced gypsum boards. Because the semi-dry method exploits the hydration-hardening mechanism of gypsum and breaks through the conventional water-requirement concept of casting, it can also be extended in future to antistatic floor gypsum core materials and other gypsum hard-body materials, a broad development path.
Key Features
- Water-to-gypsum ratio cut to about 30%, hydration is more intense and runs ~10 °C hotter
- No drying and no airing needed, packed and shipped straight from the machine
- Hollow rate 52%, expressed density < 760 kg/m³, light but strong
- Breaking load > 5,000 N, compressive strength > 5 MPa, softening coefficient > 0.7
- Indicators comfortably exceed the JC/T 698-2010 gypsum block standard
- Secondary atomisation with intelligent water sensing + accurate distribution system
- Compression ratio and pressure coordinated; one-button intelligent start; high-pressure silent running
- Automatic cubing and brick collection at the end of the line
- German-technology special mixer: stable transmission, no dead zones, sealed against leakage
Send us your requirements
Tell us your target output and the raw materials you have, and we will send a detailed quotation.
Technical Parameters
| Parameter | Semi-dry gypsum block line |
|---|---|
| Process | Semi-dry moulding (versus traditional casting) |
| Water-to-gypsum ratio | ≈ 30% |
| Hydration temperature | About 10 °C higher than the casting method |
| Drying requirement | None, pack and ship directly |
| Hollow rate | 52% |
| Expressed density | < 760 kg/m³ |
| Breaking load | > 5,000 N |
| Compressive strength | > 5 MPa |
| Softening coefficient | > 0.7 |
| Standard compliance | Exceeds JC/T 698-2010 |
| Mixer | German-technology special mixer, seal-free leakage design, large maintenance space |
| Output products | Hollow gypsum blocks, composite strips, fireproof boards, paper-faced gypsum boards |
The pictures and parameters above are for reference only, and the final interpretation right belongs to our company. Final specifications are confirmed in the contract.
Inquire about this machine
Send us your requirements for the Semi-dry Gypsum Line and we will come back with the machine list, a layout drawing and a price.
- The products you want to make and their sizes
- The output you need per shift
- The raw materials available to you
- Site area and available power supply
Enquiry about: Semi-dry Gypsum Line, Semi-Dry Fully Automatic Gypsum Block Production Line
Frequently Asked Questions
Why is a shorter drying cycle worth so much?
Because drying is the bottleneck and the cost centre of a casting plant. If the blocks can be packed straight off the line, your curing yard and drying energy shrink dramatically and your working capital turns over faster. The semi-dry line exists to remove that step.
Can I use phosphogypsum from my region?
In most cases yes, but the additive proportion must be matched to your gypsum. Send us 5–10 kg of your gypsum and a chemical analysis if you have one, and we will adjust the additive formula and the process parameters for you.
Is the additive supplied with the line?
The first batch is supplied with the line and the formula is documented in your technical file. After that we supply the additive on an ongoing basis, or you can produce it locally under licence. We will discuss the options that suit you at contract stage.
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