Standardized modular and bespoke extraction hardware configured to handle crude solar sea salt from Southern Vietnam coastal salterns and imported industrial rock salt.
Multi-level high-frequency vibrating screen calibrated for precision size separation, paired with intelligent bagging for commercial seafood brining and edible grade distribution.
Explore Screening & Packing
Complete turnkey hydro-cyclone and slurry washing line designed to extract magnesium, calcium, and surface micro-particulates up to 99.6% NaCl purity.
View Salt Washing Line
Reinforced vulcanized synthetic belting with food-grade polymer coatings engineered specifically to withstand saturated sodium brine and tropical high humidity.
Inspect Conveyor Specs
Heavy-duty agitation scrubber and hydraulic classifier vessel, ensuring rapid dissolution of soluble impurities and complete separation of clay sediments.
View Purification PlantBridging the raw sea salt harvesting provinces of Bac Lieu, Ben Tre, and Ninh Thuan with Southern Vietnam's dense industrial corridors in Binh Duong, Dong Nai, and Long An.
Ho Chi Minh City (HCMC) operates as the indispensable logistics, trading, and technology nucleus for Vietnam's southern economic powerhouse. While solar salt fields flourish across the coastal rim of the Mekong Delta and South Central Coast (most notably Can Gio within HCMC municipality, alongside nearby Bac Lieu and Ba Ria-Vung Tau), the primary raw harvest often contains significant moisture (5% to 9%), insoluble silt, and high concentrations of magnesium chloride ($MgCl_2$) and calcium sulfate ($CaSO_4$). These impurities severely degrade raw salt viability for high-tier industrial applications.
Industrial end-users within Ho Chi Minh City's surrounding export zones—ranging from the massive seafood processing facilities in Tan Thuan and Hiep Phuoc to the modern textile-dyeing hubs of Cu Chi and Binh Chanh—cannot utilize unwashed, non-standardized solar salt without risking severe pipe scaling, catalyst poisoning, or product spoilage. Consequently, the commercial landscape of Greater HCMC is aggressively modernizing from decentralized, artisanal washing pits to automated, continuous-flow counter-current salt washing plants.
Ruitu Automation’s custom salt washing equipment directly resolves this regional deficit. By deploying mechanized hydro-classification, double-roller crushing, high-G centrifugal separation, and fluid-bed drying, our installations convert domestic solar and imported rock salt into ultra-pure, high-whiteness NaCl products exceeding Vietnamese National Standards (TCVN 3974:2015 and TCVN 9639:2013).
Greater Ho Chi Minh City consumes over 380,000 metric tons of refined industrial and food-grade salt annually. Cat Lai Port and the nearby Cai Mep Deep-Water Marine Terminal handle both bulk incoming salt shipments and outgoing processed containerized exports across ASEAN.
Typical analytical profile before and after multi-stage counter-current purification for HCMC processing plants.
| Analytical Parameter | Raw Solar Salt (Mekong Basin) | After Ruitu 2-Stage Wash | After Ruitu 4-Stage EPC Refinery | Industrial Chlor-Alkali / Food Standard |
|---|---|---|---|---|
| NaCl Purity (%) | 88.50% – 93.20% | 97.80% – 98.60% | 99.40% – 99.70% | ≥ 99.20% (TCVN 3974) |
| Moisture Content ($H_2O$) | 6.00% – 9.50% | 2.50% – 3.20% | ≤ 0.15% (After Dry) | ≤ 0.30% |
| Magnesium Ion ($Mg^{2+}$) | 0.45% – 1.10% | 0.08% – 0.12% | ≤ 0.02% | ≤ 0.05% |
| Calcium Ion ($Ca^{2+}$) | 0.25% – 0.60% | 0.07% – 0.10% | ≤ 0.03% | ≤ 0.06% |
| Sulfate Ion ($SO_4^{2-}$) | 0.80% – 1.60% | 0.22% – 0.35% | ≤ 0.08% | ≤ 0.15% |
| Water Insoluble Matter | 0.30% – 0.90% | 0.03% – 0.05% | ≤ 0.01% | ≤ 0.03% |
| Whiteness Degree (R457) | 45 – 60 | 75 – 82 | 88 – 94 | ≥ 85 |
A systematic, multi-tiered chemical engineering overview of counter-current washing, selective impurity elutriation, and mechanical mother liquor recovery.
Raw sea salt is dosed into a heavy-duty hopper equipped with ultrasonic level transmitters. A dedicated variable-speed anti-corrosive belt feeder conveys the salt into the primary slurry wash tank, where it is subjected to high-shear mixing with saturated mother liquor. Wet double-roll crushing breaks crystalline agglomerates along natural cleavage planes without shattering individual crystal matrixes, liberating trapped brine pockets containing high concentrations of $Mg^{2+}$ and $SO_4^{2-}$.
The slurry enters vertical counter-current washing towers. Clean, saturated wash brine flows upward at precisely regulated laminar velocity, opposing the downward gravitational sedimentation of dense NaCl crystals. This hydrodynamic gradient selectively shears fine organic mud and micro-insoluble particulate upward into the overflow launder, while the heavy refined crystal bed reports to polyurethane-lined hydrocyclones for solid-liquid densification to 55-65% solids.
The concentrated slurry discharges into a continuous double-stage piston pusher centrifuge. Operating at elevated centrifugal acceleration (>800 G), surface liquor is stripped away through precision wedge-wire baskets, lowering moisture to <2.5%. The wet cake is then fed into a vibrating fluidized bed dryer powered by indirect industrial hot air furnaces, utilizing clean dry air to safely lower moisture to ≤0.10% without crystal discoloration or thermal degradation.
From export-grade seafood brining lines to precision chlor-alkali electrolysis, our washing machinery addresses stringent chemical tolerances across regional industries.
Ho Chi Minh City represents the processing and export clearinghouse for the Mekong Delta’s immense shrimp (Penaeus monodon, Litopenaeus vannamei) and Pangasius aquaculture outputs. Brine chilling and contact freezing require high-purity NaCl free from excess magnesium and calcium. High magnesium content imparts a bitter aftertaste and causes enzymatic protein toughening, disqualifying exports from European and North American retail markets. Ruitu salt washing lines remove magnesium salts down to ≤0.02%, preserving natural seafood texture, color, and microbiological safety.
Major industrial sauce manufacturing plants operating in Long An, Binh Duong, and HCMC utilize tens of thousands of tons of salt to preserve anchovies (Stolephorus commersonii). Crude solar salt containing heavy iron ($Fe$), copper ($Cu$), and clay causes blackening of the fish mash and uncontrolled oxidation. Mechanically washed and screened salt with uniform grain size distribution (1.0 mm – 2.5 mm) guarantees homogeneous osmotic pressure during long-term wooden vat fermentation, avoiding localized spoilage.
Chemical plants synthesizing chlorine, hydrochloric acid, and caustic soda ($NaOH$) along the Dong Nai and Thi Vai industrial axes demand feedstock salt with strict limits on $Ca^{2+}$, $Mg^{2+}$, and $SO_4^{2-}$ to prevent the rapid fouling of expensive ion-exchange fluoropolymer membranes. Ruitu's multi-wash counter-current plants produce chemical-grade salt directly from marine solar supplies, lowering chemical precipitant consumption in primary brine saturation plants by over 60%.
Industrial estates in Cu Chi, Linh Trung, and Tan Binh host major garment, fabric dyeing, and water softener regeneration operations. High insoluble levels and hardness ions in salt cause shade variations, fabric spotting, and ion-exchange resin channel fouling. Ruitu washed salt provides 100% rapid dissolution clarity, zero insoluble sediment, and uniform ionic strength, vital for computerized dyestuff exhaustion cycles.
Combining Shandong's world-class chemical equipment manufacturing capacity with responsive technical commissioning and regulatory compliance across Southern Vietnam.
Headquartered in the Binhai Economic and Technological Development Zone of Weifang, Shandong—the epicenter of China's marine chemical engineering—Ruitu operates state-of-the-art CNC plate rolling, automatic submerged arc welding, and specialized PTFE/PO lining workshops. Every washer, centrifuge shell, and drying tower undergoes rigorous non-destructive testing (NDT), dynamic balancing, and passivation before export packaging.
Strategic proximity to Qingdao Port enables streamlined breakbulk or 40-foot high-cube container transit to Ho Chi Minh City's Cat Lai Port within 5 to 7 sea freight days. Full customs brokerage handling under the ASEAN-China Free Trade Area (ACFTA Form E) provides regional clients with preferential import tariff classifications, expediting site delivery and slashing capital import costs by 15-20% relative to Western competitors.
Our engineering teams handle full site layout engineering, electrical integration (380V/50Hz IP65 standard), piping isometric calculations, and regulatory alignment with Vietnam's Ministry of Health (MOH) food contact guidelines and QCVN 40:2011/BTNMT industrial wastewater discharge standards. Mandarin and Vietnamese bilingual commissioning supervisors remain on-site until continuous commercial output thresholds are verified.
Validated performance benchmarks across continuous operational installations throughout Asia-Pacific salterns and refineries.
The salt refining sector is transitioning rapidly away from high-carbon, labor-intensive manual operations toward closed-loop automated installations. Key technological trends directly influencing project planning in the Ho Chi Minh City regional corridor include:
To fast-track custom engineering design and acquire an accurate turnkey EPC proposal for your Ho Chi Minh City production facility, please compile the following data points:
Direct technical answers addressing feed chemistry, installation timelines, corrosion protection, and regulatory compliance.
Complete line components engineered for seamless integration into Southern Vietnam chemical plants, marine salt wash houses, and thermal drying systems.
Counter-rotating grooved alloy rolls delivering uniform crystal reduction with minimal fine powder generation prior to hydro-elutriation.
View Roller Crusher
High-efficiency thermal fluid bed reducing salt moisture to ≤0.10% using precisely regulated clean air with built-in dust cyclone collection.
Explore Drying Systems
Continuous mechanical mother brine stripping unit operating at >800 G acceleration, lowering surface moisture to <2.5% at high throughput.
Inspect Pusher Centrifuge
Structural carbon steel shell lined seamlessly with virgin isostatic PTFE, resisting boiling saturated brine, acid washes, and bromine vapors.
View Lined Tower Section
Corrosion-proof filtration assembly designed to capture micro-insolubles and protect centrifugal pumps in continuous chemical circulation loops.
View PTFE Filter
Precision gap-adjustable secondary roller crusher engineered to prepare fine-grain table salt and high-surface-area chemical feed.
View Crushing Service
Rotomolded polyolefin (PO/PE) lined atmospheric storage vessel offering leak-proof endurance against saturated acidic and basic brine solutions.
Explore Lined Tank
Vibration-absorbing fluoropolymer bellows designed to eliminate mechanical stress and piping fatigue near high-pressure slurry discharge pumps.
View Expansion JointConsult directly with Ruitu Automation's chemical process engineers. We provide custom mass balance calculations, PFD schematics, and accurate budget quotes based on your crude salt assay and capacity goals.
