As a new environmentally friendly decorative material, the core of its production process lies in the retention and optimization of the function of diatomaceous earth, while balancing material strength, construction applicability and environmental protection performance. The following are its typical production process and technical points:
 **1. Raw material treatment and purification**
1. **Calitomeite screening**:
   After the raw ore is crushed and ground, impurities such as quartz sand are removed in a cyclone in grade, and the diatom shell with a particle size of 10-100μm is retained to ensure porosity (80-90%) and adsorption capacity.
2. **High temperature calcination modification**:
   Calcined at 600-800℃, remove organic impurities, expand the microporous structure of the diatom (specific surface area up to 60-80m²/g), and add fluxes (such as sodium carbonate) to enhance the binding strength of the particles.
3. **Functional additive pretreatment**:
   - Photocatalysts (such as nanoTiO₂) need to be surface coated to prevent agglomeration;
   - Inorganic pigments (iron oxide system) need to be predispersed to ensure uniform coloring.
 **2. Formula system design and mixing**
1. **Basic formula composition** (mass percentage):
   - Diatomaceous earth: 45-65% (adsorption body)
   - Inorganic cementitious material: 15-30% (white cement, gypsum or lime, providing strength)
   - Fiber reinforced material: 3-8% (wood fiber or glass fiber, anti-cracking)
   - Functional additives: 5-15% (including humidifiers, anti-molding agents, flame retardants, etc.).
2. **Dry mixing and wet mixing process**:
   - Dry mixing stage: stir diatomaceous earth, gelling materials, fibers, etc. at low speed for 10-15 minutes, and the mixing uniformity deviation should be <2%;
   - Wet mixing stage: add deionized water (water-cement ratio 0.4-0.6) and liquid additives, stir at high speed to form a paste slurry, and the viscosity is controlled at 3000-5000mPa·s.
 **3. Forming and post-treatment process**
1. **Modeling technology**:
   - **Extrusion molding**: Use a screw extruder to form sheets or special profiles for prefabricated decorative panels;
   - **Scrape coating molding**: The slurry is directly coated on the surface of the substrate, suitable for on-site construction.
2. **Drying and curing**:
   Step-by-step temperature-controlled drying (40℃→80℃→120℃) is adopted to avoid rapid water loss and cracking. The curing time is 8-12 hours, and the final moisture content is ≤5%.
3. **Surface treatment**:
   - Texture shaping: The textures of imitation stone, wood grain, etc. are formed through rolling and mold embossing;
   - Functional spraying: spray the surface with nanohydrophobic agent or antibacterial coating to enhance stain resistance.
 **4. Key technological innovation points**
1. **Low temperature activation technology**:
   Cialite is pickled and activated (such as HCl treatment) below 400°C, retaining the natural structure while enhancing the ion exchange capacity.The formaldehyde adsorption rate increases by 20-30%.
Compound gelling system development:
"White cement + metakaolin" is used to replace traditional gypsum to solve the contradiction between strength and shrinkage (compressive strength ≥3MPa, shrinkage rate <0.1%).
Intelligent production control:
The PLC automatic batching system and online particle size detection were introduced, and the formula accuracy error was <0.5%, and the batch stability was improved to 98%.
5. Quality inspection and environmental certification
The product needs to pass the GB/T 35152-2017 "Diatom mud decorative wall material" test, and the key indicators include:

Adsorption performance: formaldehyde purification rate ≥80%;
Physical properties: Wet rub resistance ≥1000 times, fire resistance level A1;
Environmental protection: TVOC release amount ≤0.03mg/m³.
At present, the industry is upgrading towards low energy consumption (such as waste heat recovery and drying technology) and high functionalization (photocatalytic self-cleaning). In the future, 3D printing technology may be introduced to achieve personalized and rapid construction.