Raw Materials for Spray Dryer Towers, Ready

VOLDE offers advanced silo systems for the safe storage of high-volume powder raw materials such as sodium sulfate, sodium carbonate, percarbonate, zeolite, and sodium chloride. Steel or stainless silos, designed according to product properties, are equipped to meet all operational requirements, including bulk tanker filling, filters, pressure balancing, level monitoring, and flow aids

| Raw Material Silos and Filling

VOLDE builds systems that enable high-volume powder raw materials used in detergent production — such as sodium sulfate, sodium carbonate (soda ash), perborate, zeolite, and sodium chloride (salt) — to be discharged quickly, safely, and dust-free from bulk tankers, and that fill the silos.

During filling, raw materials are transferred into the silos via closed-loop pneumatic lines equipped with the AIRPLUS support-conveying system. Thanks to this:

• The spread of dust into the environment is prevented
• The working area remains clean and safe
• Flow problems are reduced to a minimum

The proper air velocity and pressure are determined by taking into account the abrasiveness, density, and particle structure of each raw material. Thanks to this engineering approach:

• Wear and maintenance needs within the line are reduced
• Energy consumption is optimized
• The product reaches the silo without being damaged

Silo Systems ⇢

| Day Bin Feeding

The orderly, controlled transfer of raw materials from the main storage silos to both the day bins next to the spray dryer (tower) and the day bins used in the post-dose section is a critical stage for the continuity of production flow. The DENSPLUS dense-phase conveying system designed by VOLDE ensures that the required raw material reaches both points at the appropriate capacity and in the correct quantity.

Storage silos are manufactured from carbon steel or stainless steel depending on the raw material's flow properties. The silos are supported by advanced equipment that guarantees production continuity:

• Continuous stock tracking via radar and load-cell systems
• Achieving homogeneous flow with SILOCONE and EASYFLOW
• Preventing clogging and blockage with anti-bridging systems
• Safe filling and discharge via filter and pressure-balancing equipment

Thanks to these systems, problems commonly seen during filling and discharge — such as bridging, clogging, and clumping — are eliminated. Raw materials are fed from the silos to the spray dryer and post-dose day bins in an orderly, uninterrupted, and controlled manner.

| Advantages

Stock levels in the day bins are continuously monitored via load-cell weighing systems. This data is transmitted to the control system in real time. When the levels of the day bins on the tower side or the additive silos connected to the post-dose lines drop, the DENSPLUS pneumatic conveying line is automatically activated and the transfer cycle begins. This ensures that powder raw materials flow from the silos in an orderly manner and that production experiences no interruption. VOLDE has numerous applications in the detergent sector operating at high values such as a capacity of 40 t/h and a distance of 100 m for raw material feeding.

• Bulk Storage & Space Efficiency: High volume at a single center; reduces space, labor, and logistics costs.
• Hygienic, Dust-Free System: Cross-contamination and spillage are prevented through closed transfer.
• Flexible & Integrated Design: Modular dosing and line integration according to the recipe are easy.
• Long Life & Easy Maintenance: Durable body, easy-to-clean lines, and low maintenance cost.